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Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Heavy metals hazardous components of Eaf dust  

Science Conference Proceedings (OSTI)

Electric arc furnace (EAF) dust is a waste generated in the EAF during the steel production process. Among different wastes, EAF dust represents one of the most hazardous, since it contains heavy metals such as Zn, Fe, Cr, Cd and Pb. The goal of the ... Keywords: electric arc furnace (EAF), furnace additives, hazard components, heavy metals, scrap composition, x-ray fluorescence spectroscopy

Cristiana-Zizi Rizescu; Zorica Bacinschi; Elena Valentina Stoian; Aurora Poinescu; Dan Nicolae Ungureanu

2011-02-01T23:59:59.000Z

2

Scoping evaluation of the technical capabilities of DOE sites for disposal of hazardous metals in mixed low-level waste  

SciTech Connect

A team of analysts designed and conducted a scoping evaluation to estimate the technical capabilities of fifteen Department of Energy sites for disposal of the hazardous metals in mixed low-level waste (i.e., waste that contains both low-level radioactive materials and hazardous constituents). Eight hazardous metals were evaluated: arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver. The analysis considered transport only through the groundwater pathway. The results are reported as site-specific estimates of maximum concentrations of each hazardous metal in treated mixed low-level waste that do not exceed the performance measures established for the analysis. Also reported are site-specific estimates of travel times of each hazardous metal to the point of compliance.

Gruebel, M.M.; Waters, R.D.; Langkopf, B.S.

1997-05-01T23:59:59.000Z

3

Use of MgO doped with a divalent or trivalent metal cation for removing arsenic from water  

DOE Patents (OSTI)

Systems and methods for use of magnesium hydroxide, either directly or through one or more precursors, doped with a divalent or trivalent metal cation, for removing arsenic from drinking water, including water distribution systems. In one embodiment, magnesium hydroxide, Mg(OH).sub.2 (a strong adsorbent for arsenic) doped with a divalent or trivalent metal cation is used to adsorb arsenic. The complex consisting of arsenic adsorbed on Mg(OH).sub.2 doped with a divalent or trivalent metal cation is subsequently removed from the water by conventional means, including filtration, settling, skimming, vortexing, centrifugation, magnetic separation, or other well-known separation systems. In another embodiment, magnesium oxide, MgO, is employed, which reacts with water to form Mg(OH).sub.2. The resulting Mg(OH).sub.2 doped with a divalent or trivalent metal cation, then adsorbs arsenic, as set forth above. The method can also be used to treat human or animal poisoning with arsenic.

Moore, Robert C; Holt-Larese, Kathleen C; Bontchev, Ranko

2013-08-13T23:59:59.000Z

4

Iron phosphate compositions for containment of hazardous metal waste  

DOE Patents (OSTI)

An improved iron phosphate waste form for the vitrification, containment and long-term disposition of hazardous metal waste such as radioactive nuclear waste is provided. The waste form comprises a rigid iron phosphate matrix resulting from the cooling of a melt formed by heating a batch mixture comprising the metal waste and a matrix-forming component. The waste form comprises from about 30 to about 70 weight percent P{sub 2}O{sub 5} and from about 25 to about 50 weight percent iron oxide and has metals present in the metal waste chemically dissolved therein. The concentration of iron oxide in the waste form along with a high proportion of the iron in the waste form being present as Fe{sup 3+} provide a waste form exhibiting improved chemical resistance to corrosive attack. A method for preparing the improved iron phosphate waste forms is also provided. 21 figs.

Day, D.E.

1998-05-12T23:59:59.000Z

5

Hazards evaluation of plutonium metal opening and stabilization  

SciTech Connect

Hazards evaluation is the analysis of the significance of hazardous situations associated with an activity OK process. The HE used qualitative techniques of Hazard and Operability (HazOp) analysis and What-If analysis to identify those elements of handling and thermal stabilization processing that could lead to accidents.

JOHNSON, L.E.

1999-08-31T23:59:59.000Z

6

The effect of Ca-Fe-As coatings on microbial leaching of metals in arsenic bearing mine waste  

Science Conference Proceedings (OSTI)

Globally arsenic (As) is a ubiquitous trace element derived from the natural weathering of As-bearing rock. With the onset of reducing conditions, the prevalence of aqueous As(III) may be intensified through biotic and abiotic processes. Here we evaluate the stability of arsenic bearing Ca-Fe hydroxide phases collected from exposed tailings at Ketza River mine, Yukon, Canada, during the reductive dissolution of both acid treated and untreated samples by Shewanella putrefaciens 200R and Shewanella sp. ANA-3. Samples were acid treated in order to remove Ca-Fe oxide coatings and evaluate the influence of these coatings on the rates of microbial Fe(III) and As(V) reduction. Environmental scanning electron microscope (ESEM) micrographs of the solid phase show significant differences in the chemistry and physical morphology of the material by the bacteria over time and are especially evident in the acid treated samples. Moreover, while solution chemistry showed similar As(III) respiration rates of the inoculated acid treated samples for both ANA3 and 200R at {approx}1.1 x 10{sup -6} {micro}M {center_dot} s{sup -1} {center_dot} m{sup -2}, the Fe(II) respiration rates differed at 1.4 x 10{sup -7} and 9.5 x 10{sup -8} {micro}M {center_dot} s{sup -1} {center_dot} m{sup -2} respectively, thus suggesting strain specific metal reduction metabolic pathways Additionally, the enhanced metal reduction observed in the acid treated inoculated samples suggests that the presence of the Ca-Fe hydroxide phase in the untreated samples acted as a barrier, inhibiting the bacteria from accessing the metals. This has implications for increased mobilization of metals by metal reducing bacteria within areas of increased acidity, such as acid mine drainage sites and industrial tailings ponds that can come into contact with surface and ground water sources.

Weisener, C.G.; Guthrie, J.W.; Smeaton, C.M.; Paktunc, D.; Fryer, B.J. (Windsor); (NRC)

2011-11-07T23:59:59.000Z

7

Method for mobilization of hazardous metal ions in soils  

DOE Patents (OSTI)

A microbial process for removing heavy metals such as bismuth, cadmium, lead, thorium, uranium and other transuranics from soils and sediments, utilizing indigenous, or isolates of indigenous, microorganisms and reducing agents, such as cysteine or sodium thioglycollate, or complexing agents such as the amino acid glycine, to effect the mobilization or release of the metals from the soil particles.

Dugan, Patrick R. (Idaho Falls, ID); Pfister, Robert M. (Powell, OH)

1995-01-01T23:59:59.000Z

8

Geochemical and hydrodynamic controls on arsenic and trace metal cycling in a seasonally stratified US sub-tropical reservoir  

SciTech Connect

The phase distribution of trace metals and oxyanions was investigated within a South Texas watershed hosting a high density of surface uranium mine pits and tailings. The objectives of the study were to evaluate the potential impact of these old uranium mining sites on the watershed with particular emphasis on spatial and temporal changes in water quality of a reservoir that serves as the major source of freshwater to a population of {approx} 350,000 people in the region. A livestock pond, bordered by uranium mine tailings, was used as a model case-study site to evaluate the cycling of uranium mine-derived oxyanions under changing redox conditions. Although the pond showed seasonal thermal and chemical stratification, geochemical cycling of metals was limited to Co and Pb, which seemed to be mostly associated with redox cycling of Mn mineral phases, and U, which suggested reductive precipitation in the ponds hypolimnion. Uranium levels, however, were too low to support strong inputs from th e tailings into the water column of the pond. The strong relations observed between particulate Cr, Cs, V and Fe suggest that these metals are associated with a stable particulate phase (probably allochthonous aluminosilicates) enriched in unreactive iron. This observation is supported by a parallel relationship in sediments collected across a broad range of sediment depositional processed (and histories) in the basin. Arsenic, though selectively enriched in the ponds water column, remained stable and mostly in solution throughout the depth of the profile and showed no sign of geochemical cycling or interaction with Fe-rich particles. We found no evidence of anthropogenic impacts of U mines beyond the purely local scale. Arsenic does decrease in concentration downstream of uranium mining sites but its presence within the Nueces drainage basin is related to interactions between surface and ground waters with uranium-rich geological formations rather than long-scale transport of contaminants downstream of the U mine pits and tailings. As in Lyssy pond, arsenic (and other oxyanions) in Lake Corpus Christi's water column are not affected by the abundant presence of Fe-rich particles but instead behave conservatively throughout the entire period of study. A quantitative mass balance model, constructed using monthly hydrological data for the reservoir, provides quantitative evidence of seasonal evaporative concentration of as in surface waters demonstrating the predominance of hydrodynamic constraints, over geochemical ones, on the cycling of this metal in selected aquatic systems.

Brandenberger, Jill M.; Louchouarn, Patrick; Herbert, Bruce; Tissot, Philippe

2004-10-01T23:59:59.000Z

9

TREATMENT OF METAL-LADEN HAZARDOUS WASTES WITH ADVANCED CLEAN COAL TECHNOLOGY BY-PRODUCTS  

Science Conference Proceedings (OSTI)

Metal-laden wastes can be stabilized and solidified using advanced clean coal technology by-products (CCTBs)--fluid bed combustor ash and spray drier solids. These utility-generated treatment chemicals are available for purchase through brokers, and commercial applications of this process are being practiced by treaters of metal-laden hazardous waste. A complex of regulations governs this industry, and sensitivities to this complex has discouraged public documentation of treatment of metal-laden hazardous wastes with CCTBs. This report provides a comprehensive public documentation of laboratory studies that show the efficacy of the stabilization and solidification of metal-laden hazardous wastes--such as lead-contaminated soils and sandblast residues--through treatment with CCTBs. It then describes the extensive efforts that were made to obtain the permits allowing a commercial hazardous waste treater to utilize CCTBs as treatment chemicals and to install the equipment required to do so. It concludes with the effect of this lengthy process on the ability of the treatment company to realize the practical, physical outcome of this effort, leading to premature termination of the project.

James T. Cobb, Jr.

2003-09-12T23:59:59.000Z

10

It's Elemental - The Element Arsenic  

NLE Websites -- All DOE Office Websites (Extended Search)

Germanium Germanium Previous Element (Germanium) The Periodic Table of Elements Next Element (Selenium) Selenium The Element Arsenic [Click for Isotope Data] 33 As Arsenic 74.92160 Atomic Number: 33 Atomic Weight: 74.92160 Melting Point: 1090 K (817°C or 1503°F) Boiling Point: 887 K (614°C or 1137°F) Density: 5.776 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Semi-metal Period Number: 4 Group Number: 15 Group Name: Pnictogen What's in a name? From the Latin word arsenicum, the Greek word arsenikon and the Arabic word Az-zernikh. Say what? Arsenic is pronounced as AR-s'n-ik. History and Uses: Although arsenic compounds were mined by the early Chinese, Greek and Egyptian civilizations, it is believed that arsenic itself was first identified by Albertus Magnus, a German alchemist, in 1250. Arsenic occurs

11

Evaluation of extractant-coated ferromagnetic microparticles for the recovery of hazardous metals from waste solution.  

SciTech Connect

A magnetically assisted chemical separation (MACS) process was developed earlier at Argonne National Laboratory (ANL). This compact process was designed for the separation of transuranics (TRU) and radionuclides from the liquid waste streams that exist at many DOE sites, with an overall reduction in waste volume requiring disposal. The MACS process combines the selectivity afforded by solvent extractant/ion exchange materials with magnetic separation to provide an efficient chemical separation. Recently, the MACS process has been evaluated with acidic organophosphorus extractants for hazardous metal recovery from waste solutions. Moreover, process scale-up design issues have been addressed with respect to particle filtration and recovery. Two acidic organophosphorus compounds have been investigated for hazardous metal recovery, bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex{reg_sign} 272) and bis(2,4,4-trimethylpentyl) dithiophosphinic acid (Cyanex{reg_sign} 301). Coated onto magnetic microparticles, these extractants demonstrated superior recovery of hazardous metals from solution, relative to what was expected on the basis of results from solvent extraction experiments. The results illustrate the diverse applications of MACS technology for dilute waste streams. Preliminary process scale-up experiments with a high-gradient magnetic separator at Oak Ridge National Laboratory have revealed that very low microparticle loss rates are possible.

Kaminski, M. D.

1998-05-08T23:59:59.000Z

12

Clean process to destroy arsenic-containing organic compounds with recovery of arsenic  

DOE Patents (OSTI)

A reduction method is provided for the treatment of arsenic-containing organic compounds with simultaneous recovery of pure arsenic. Arsenic-containing organic compounds include pesticides, herbicides, and chemical warfare agents such as Lewisite. The arsenic-containing compound is decomposed using a reducing agent. Arsine gas may be formed directly by using a hydrogen-rich reducing agent, or a metal arsenide may be formed using a pure metal reducing agent. In the latter case, the arsenide is reacted with an acid to form arsine gas. In either case, the arsine gas is then reduced to elemental arsenic. 1 fig.

Upadhye, R.S.; Wang, F.T.

1996-08-13T23:59:59.000Z

13

TREATMENT OF METAL-LADEN HAZARDOUS WASTES WITH ADVANCED CLEAN COAL TECHNOLOGY BY-PRODUCTS  

Science Conference Proceedings (OSTI)

This sixteenth quarterly report describes work done during the sixteenth three-month period of the University of Pittsburgh's project on the ''Treatment of Metal-Laden Hazardous Wastes with Advanced Clean Coal Technology By-Products.'' This report describes the activities of the project team during the reporting period. The principal work has focused upon new laboratory evaluation of samples from Phase 1, discussions with MAX Environmental Technologies, Inc., on the field work of Phase 2, giving a presentation, and making and responding to several outside contacts.

James T. Cobb, Jr.; Ronald D. Neufeld; Jana Agostini

1999-06-01T23:59:59.000Z

14

Treatment of metal-laden hazardous wastes with advanced Clean Coal Technology by-products  

SciTech Connect

This eleventh quarterly report describes work done during the eleventh three-month period of the University of Pittsburgh's project on the ``Treatment of Metal-Laden Hazardous Wastes with Advanced Clean Coal Technology By-Products.'' This report describes the activities of the project team during the reporting period. The principal work has focused upon new laboratory evaluation of samples from Phase 1, discussions with MAX Environmental Technologies, Inc., on the field work of Phase 2, preparing and giving presentations, and making and responding to two outside contacts.

James T. Cobb, Jr.; Ronald D. Neufeld; Jana Agostini; Wiles Elder

1999-04-05T23:59:59.000Z

15

TREATMENT OF METAL-LADEN HAZARDOUS WASTES WITH ADVANCED CLEAN COAL TECHNOLOGY BY-PRODUCTS  

Science Conference Proceedings (OSTI)

This seventeenth quarterly report describes work done during the seventeenth three-month period of the University of Pittsburgh's project on the ''Treatment of Metal-Laden Hazardous Wastes with Advanced Clean Coal Technology By-Products.'' This report describes the activities of the project team during the reporting period. The principal work has focused upon new laboratory evaluation of samples from Phase 1, discussions with MAX Environmental Technologies, Inc., on the field work of Phase 2, giving a presentation, submitting a manuscript and making and responding to one outside contact.

James T. Cobb, Jr.; Ronald D. Neufeld; Jana Agostini

1999-01-01T23:59:59.000Z

16

Round-Robin Study of Methods for Trace Metal Analysis: Graphite Furnace Atomic Absorption Spectroscop-Cadmium, Arsenic and Chromium  

Science Conference Proceedings (OSTI)

Eighteen utility laboratories evaluated graphite furnace atomic absorption spectroscopy (GFAAS) methods for measuring cadmium, arsenic and chromium in a variety of utility aqueous streams. This EPRI Tailored Collaboration Project, part of the ongoing Analytical Methods Qualification (AMQ) program, will help utilities define reasonable pollutant discharge limits and effluent monitoring requirements.

1997-12-05T23:59:59.000Z

17

Disposable Absorbent Material for the Removal of Arsenic from Water  

Science Conference Proceedings (OSTI)

Soils and groundwater at many substation sites are contaminated with arsenic-containing compounds. Cost effective water treatment technologies are needed to remove arsenic and other trace metals from underlying aquifers, especially now that drinking water standard for arsenic has been lowered to 10 g/L from the previous value of 50 g/L. The current project tested a disposable ferric oxide adsorbent material, Bayoxide E33, which has been reported to have a high capacity for arsenic removal.

2008-09-10T23:59:59.000Z

18

Reactivity of Crystalline Silicotitanate (CST) and Hazardous Metal/Actinide Loading During Low Curie Salt Use  

Science Conference Proceedings (OSTI)

Crystalline Silicotitanate (CST) in its engineered form (IONSIV (registered) IE-911) continues to be studied for possible use for removing radioactive cesium from several types of waste solutions at the Savannah River Site. This study involved deriving information about spent CST that assists in determining possible disposition alternatives. Results for this work include: After passing 3000 column volumes of a dissolved saltcake simulant containing RCRA hazardous metals, the spent CST passed a TCLP test and is RCRA nonhazardous. The spent CST was found to have transuranic concentrations greater than the TRU limit of 100 nCi/g. The triplicate measurement showed TRU levels greater than 4000 nCi/g. Studies involving simulating storage of ground CST in sludge slurries indicated no detrimental effects on the measured yield stress or viscosity of the slurries when stored for up to 4 months at 50 degrees C. During the storage testing, there was no indication of significant degradation of the C ST as measured by in growth of CST-specific elements in the liquid phase of the slurry. Also, during storage tests minor desorption of cesium from the ground CST material was observed.

WILLIAM, WILMARTH

2004-11-30T23:59:59.000Z

19

Drinking Water Problems: Arsenic  

E-Print Network (OSTI)

High levels of arsenic in drinking water can poison and even kill people. This publication explains the symptoms of arsenic poisoning and common treatment methods for removing arsenic from your water supply.

Lesikar, Bruce J.; Melton, Rebecca; Hare, Michael; Hopkins, Janie; Dozier, Monty

2005-12-02T23:59:59.000Z

20

Arsenic Removal from Groundwater Using Iron Electrocoagulation: Effect of  

NLE Websites -- All DOE Office Websites (Extended Search)

Arsenic Removal from Groundwater Using Iron Electrocoagulation: Effect of Arsenic Removal from Groundwater Using Iron Electrocoagulation: Effect of Charge Dosage Rate Title Arsenic Removal from Groundwater Using Iron Electrocoagulation: Effect of Charge Dosage Rate Publication Type Journal Article Refereed Designation Refereed LBNL Report Number LBNL-6221E Year of Publication 2013 Authors Amrose, Susan, Ashok J. Gadgil, Venkat Srinivasan, Kristin Kowolik, Marc Muller, Jessica Huang, and Robert Kostecki Journal Joournal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering Volume 48 Issue 9 Pagination 1019-1030 Date Published 04/2013 Keywords arsenic, bangladesh, Cambodia, dosage rate, electrocoagulation, india, water treatment Abstract We demonstrate that electrocoagulation (EC) using iron electrodes can reduce arsenic below 10 μg/L in synthetic Bangladesh groundwater and in real groundwater from Bangladesh and Cambodia while investigating the effect of operating parameters that are often overlooked, such as charge dosage rate. We measure arsenic removal performance

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Arsenic Health Research Synthesis  

Science Conference Proceedings (OSTI)

This report summarizes EPRI-sponsored arsenic health research results to date, examines implications of these results for reducing uncertainties in arsenic cancer risk assessment, and identifies remaining research needs. The most important contributions of this research toward reducing key uncertainties for arsenic cancer risk estimates include a revised arsenic inhalation unit risk value, support for a nonlinear dose-response relationship, an estimate of bioavailability of arsenic in coal fly ash, deter...

2001-06-12T23:59:59.000Z

22

Emissions of air toxics from coal-fired boilers: Arsenic  

Science Conference Proceedings (OSTI)

Concerns over emissions of hazardous air pollutants (air toxics) have emerged as a major environmental issue; the authority of the US Environmental Protection Agency to regulate such pollutants has been greatly expanded through passage of the Clean Air Act Amendments of 1990. Arsenic and arsenic compounds are of concern mainly because of their generally recognized toxicity. Arsenic is also regarded as one of the trace elements in coal subject to significant vaporization. This report summarizes and evaluates available published information on the arsenic content of coals mined in the United States, on arsenic emitted in coal combustion, and on the efficacy of various environmental control technologies for controlling airborne emissions. Bituminous and lignite coals have the highest mean arsenic concentrations, with subbituminous and anthracite coals having the lowest. However, all coal types show very significant variations in arsenic concentrations. Arsenic emissions from coal combustion are not well-characterized, particularly with regard to determination of specific arsenic compounds. Variations in emission, rates of more than an order of magnitude have been reported for some boiler types. Data on the capture of arsenic by environmental control technologies are available primarily for systems with cold electrostatic precipitators, where removals of approximately 50 to 98% have been reported. Limited data for wet flue-gas-desulfurization systems show widely varying removals of from 6 to 97%. On the other hand, waste incineration plants report removals in a narrow range of from 95 to 99%. This report briefly reviews several areas of research that may lead to improvements in arsenic control for existing flue-gas-cleanup technologies and summarizes the status of analytical techniques for measuring arsenic emissions from combustion sources.

Mendelsohn, M.H.; Huang, H.S.; Livengood, C.D.

1994-08-01T23:59:59.000Z

23

Characterization and stabilization of arsenic in water treatment residuals  

E-Print Network (OSTI)

The characterization of water treatment residuals containing arsenic was investigated in the first study. Arsenic desorption and leachability from the residuals were the focus of this study. Arsenic leaching from water treatment residuals was found to be underestimated by the toxicity characteristic leaching test (TCLP) due to the pH of the leachates being favorable for As(V) adsorption. Competitive desorption of arsenic with phosphate was significant because phosphate tends to compete with As(V) on the surface of the metal hydroxide for adsorption sites. However, arsenic desorption by the competition of sulfate and chloride was found to be negligible. The pH in the leachate was a critical variable in controlling arsenic stability in the residuals. The release of arsenic from the residuals was elevated at low and high pH due to the increase dissolution of the adsorbents such as Fe and Al hydroxides. In the second phase of the study, the stabilization techniques for arsenic contained residuals and were examined to develop methods to suitably stabilize arsenic to eliminate and/or minimize leaching. A decrease of arsenic leaching was achieved by the addition of lime to the residuals and believed to be due to the formation of less soluble and stable calcium-arsenic compounds. However, it is suggested that the ordinary Portland cement (OPC) should be added with the lime for the long term stabilization because lime can be slowly consumed when directly exposed to atmospheric CO2. The solidification and stabilization (S/S) technique with lime and OPC was shown to be successfully applied by the immobilization of a wide variety of arsenic tainted water treatment residuals.

Wee, Hun Young

2003-08-01T23:59:59.000Z

24

Arsenic Health Research Update  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) research program investigating the health effects of inorganic arsenic continues to focus on understanding the biological significance of low-level inorganic arsenic exposure. The major component of ongoing work is the development of an alternative, nonlinear approach to revising the inorganic arsenic cancer potency value (or cancer slope factor). Current, default linear approaches for establishing a cancer slope factor do not account for the biological mode o...

2010-12-31T23:59:59.000Z

25

Arsenic activation neutron detector  

DOE Patents (OSTI)

A detector of bursts of neutrons from a deuterium-deuteron reaction includes a quantity of arsenic adjacent a gamma detector such as a scintillator and photomultiplier tube. The arsenic is activated by the 2.5-MeV neutrons to release gamma radiation which is detected to give a quantitative representation of detected neutrons.

Jacobs, E.L.

1980-01-28T23:59:59.000Z

26

Treatment of metal-laden hazardous wastes with advanced clean coal technology by-products. Quarterly report, September 1995--December 1995  

SciTech Connect

This fifth quarterly report describes work done during the fifth three-month period of the University of Pittsburgh`s project on the {open_quotes}Treatment of Metal-Laden Hazardous Wastes with Advanced Clean Coal Technology By-Products.{close_quotes} Participating with the university on this project is Mill Service, Inc. This report describes the activities of the project team during the reporting period. The principal work has focussed upon completing laboratory evaluation of samples produced during Phase 1, preparing reports and presentations, and seeking environmental approvals and variances to permits that will allow the field work to proceed. The compressive strength of prepared concretes is described.

1996-03-01T23:59:59.000Z

27

Method of recycling hazardous waste  

SciTech Connect

The production of primary metal from ores has long been a necessary, but environmentally devastating process. Over the past 20 years, in an effort to lessen environmental impacts, the metal processing industry has developed methods for recovering metal values from certain hazardous wastes. However, these processes leave residual molten slag that requires disposal in hazardous waste landfills. A new process recovers valuable metals, metal alloys, and metal oxides from hazardous wastes, such as electric arc furnace (EAF) dust from steel mills, mill scale, spent aluminum pot liners, and wastewater treatment sludge from electroplating. At the same time, the process does not create residual waste for disposal. This new method uses all wastes from metal production processes. These hazardous materials are converted to three valuable products - mineral wool, zinc oxide, and high-grade iron.

NONE

1999-11-11T23:59:59.000Z

28

Characterization of Arsenic Contamination on Rust from Ton Containers  

Science Conference Proceedings (OSTI)

The speciation and spatial distribution of arsenic on rusted steel surfaces affects both measurement and removal approaches. The chemistry of arsenic residing in the rust of ton containers that held the chemical warfare agents bis(2-chloroethyl)sulfide (sulfur mustard) and 2-chlorovinyldichloroarsine (Lewisite) is of particular interest, because while the agents have been decontaminated, residual arsenic could pose a health or environmental risk. The chemistry and distribution of arsenic in rust samples was probed using imaging secondary ion mass spectrometry (SIMS), X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy, and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX). Arsenic in the +3 and or +5 oxidation state is homogeneously distributed at the very top-most layer of the rust samples, and is intimately associated with iron. Sputter depth profiling followed by SIMS and XPS shows As at a depth of several nm, in some cases in a reduced form. The SEM/EDX experiments show that As is present at a depth of several microns, but is inhomogeneously distributed; most locations contained oxidized As at concentrations of a few percent, however several locations showed very high As in a metallic form. These results indicate that the rust material must be removed if the steel containers are to be cleared of arsenic.

Gary S. Groenewold; Recep Avci; Robert V. Fox; Muhammedin Deliorman; Jayson Suo; Laura Kellerman

2013-01-01T23:59:59.000Z

29

Removal of arsenic compounds from petroliferous liquids  

DOE Patents (OSTI)

Described is a process for removing arsenic from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic bound to it from contacting petroliferous liquid as described above and involves: a. treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10 and, b. separating the solids and liquids from each other. Preferably the regeneration treatment is in two steps wherein step (a) is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, steps (a) and (b) are repeated using a bicarbonate.

Fish, Richard H. (Berkeley, CA)

1985-01-01T23:59:59.000Z

30

Hazardous Waste  

Science Conference Proceedings (OSTI)

Table 6   General refractory disposal options...D landfill (b) Characterized hazardous waste by TCLP

31

Removal of arsenic compounds from petroliferous liquids  

DOE Patents (OSTI)

The present invention in one aspect comprises a process for removing arsenic from petroliferous-derived liquids by contacting said liquid with a divinylbenzene-crosslinked polystyrene polymer (i.e. PS-DVB) having catechol ligands anchored to said polymer, said contacting being at an elevated temperature. In another aspect, the invention is a process for regenerating spent catecholated polystyrene polymer by removal of the arsenic bound to it from contacting petroliferous liquid in accordance with the aspect described above which regenerating process comprises: (a) treating said spent catecholated polystyrene polymer with an aqueous solution of at least one member selected from the group consisting of carbonates and bicarbonates of ammonium, alkali metals, and alkaline earth metals, said solution having a pH between about 8 and 10, and said treating being at a temperature in the range of about 20/sup 0/ to 100/sup 0/C; (b) separating the solids and liquids from each other. In a preferred embodiment the regeneration treatment is in two steps wherein step: (a) is carried out with an aqueous alcoholic carbonate solution which includes at least one lower alkyl alcohol, and, steps (c) and (d) are added. Steps (c) and (d) comprise: (c) treating the solids with an aqueous alcoholic solution of at least one ammonium, alkali or alkaline earth metal bicarbonate at a temperature in the range of about 20 to 100/sup 0/C; and (d) separating the solids from the liquids.

Fish, R.H.

1984-04-06T23:59:59.000Z

32

Replacement of lead-loaded glovebox glove with attenuation medium that are not RCRA-hazardous metals  

SciTech Connect

Programmatic operations at the Los Alamos National Laboratory Plutonium Facility (TA-55) involve working with various amounts of plutonium and other highly toxic, alpha-emitting materials. The spread of radiological contamination on surfaces, airborne contamination, and excursions of contaminants into the operator's breathing zone are prevented through the use of a variety of gloveboxes (the glovebox, coupled with an adequate negative pressure gradient, provides primary confinement). Radiation shielding is commonly used to protect the glovebox worker from unintentional direct and secondary radiation exposure, while working with plutonium-238 and plutonium-239. In these environments, low-energy photons, i.e., those less than 250 keY, are encountered. Shielding glove box gloves are traditionally composed of lead-based materials, but these are now considered hazardous waste. This has prompted the development of new, nonhazardous- shielding gJovebox gloves. No studies, however, have investigated the effectiveness of these new glovebox gloves. We examined both leaded and nonhazardous- shielding glovebox gloves and compared their attenuation effectiveness over the energy range of interest at TA-55. All measurements are referenced to lead sheets, allowing direct comparisons to the common industry standard of 0.1 mm lead equivalent material. The attenuation properties of both types of glovebox gloves vary with energy, making it difficult for manufacturers to claim lead equivalency across the entire energy range used at TA-55. The positions of materials' photon energy absorption edges, which are particularly important to improved attenuation performance, depending upon the choice of radiation energy range, are discussed. This effort contributes to the Los Alamos National Laboratory Continuous Improvement Program by improving the efficiency, cost effectiveness, and formality of glovebox operations.

Cournoyer, Michael E [Los Alamos National Laboratory; George, Gerald L [Los Alamos National Laboratory; Dodge, Robert L [Los Alamos National Laboratory; Chunglo, Steve [CANBERRA INDUSTRIES

2010-01-01T23:59:59.000Z

33

Production of selenium-72 and arsenic-72  

DOE Patents (OSTI)

Methods and apparatus for producing selenium-72, separating it from its daughter isotope arsenic-72, and generating multiple portions of a solution containing arsenic-72 from a reusable parent substance comprised of selenium-72. The invention provides apparatus which can be located at a site where arsenic-72 is used, for purposes such as PET imaging, to produce arsenic-72 as needed, since the half-life of arsenic-72 is very short.

Phillips, Dennis R. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

34

Production of selenium-72 and arsenic-72  

DOE Patents (OSTI)

Methods and apparatus for producing selenium-72, separating it from its daughter isotope arsenic-72, and generating multiple portions of a solution containing arsenic-72 from a reusable parent substance comprised of selenium-72. The invention provides apparatus which can be located at a site where arsenic-72 is used, for purposes such as PET imaging, to produce arsenic-72 as needed, since the half-life of arsenic-72 is very short.

Phillips, Dennis R. (Los Alamos, NM)

1995-01-01T23:59:59.000Z

35

Hazardous Waste Program (Alabama)  

Energy.gov (U.S. Department of Energy (DOE))

This rule states criteria for identifying the characteristics of hazardous waste and for listing hazardous waste, lists of hazardous wastes, standards for the management of hazardous waste and...

36

Electrical hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

associated with your work or the equipment you are using, stop the work and ask your CAT representative for guidance in developing safe work practices that minimize the hazards...

37

Production of selenium-72 and arsenic-72  

SciTech Connect

Methods for producing selenium-72, separating it from its daughter isotope arsenic-72, and generating multiple portions of a solution containing arsenic-72 from a reusable parent substance comprised of selenium-72.

Phillips, Dennis R. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

38

Arsenic in human history and modern societies  

Science Conference Proceedings (OSTI)

Chapter 5 contains a section titled: Arsenic in coal and oil shale utilization and their by-products.

Kevin R. Henke; David A. Atwood [University of Kentucky, Lexington, KY (United States). Dept. of Chemistry

2009-03-15T23:59:59.000Z

39

In Situ Iron Oxide Emplacement for Groundwater Arsenic Remediation  

E-Print Network (OSTI)

Iron oxide-bearing minerals have long been recognized as an effective reactive media for arsenic-contaminated groundwater remediation. This research aimed to develop a technique that could facilitate in situ oxidative precipitation of Fe3+ in a soil (sand) media for generating a subsurface iron oxide-based reactive barrier that could immobilize arsenic (As) and other dissolved metals in groundwater. A simple in situ arsenic treatment process was successfully developed for treating contaminated rural groundwater using iron oxide-coated sand (IOCS). Using imbibition flow, the system facilitated the dispersive transport of ferrous iron (Fe2+) and oxidant solutions in porous sand to generate an overlaying blanket where the Fe2+ was oxidized and precipitated onto the surface as ferric oxide. The iron oxide (FeOx) emplacement process was significantly affected by (1) the initial surface area and surface-bound iron content of the sand, (2) the pH and solubility of the coating reagents, (3) the stability of the oxidant solution, and (4) the chemical injection schedule. In contrast to conventional excavate-and-fill treatment technologies, this technique could be used to in situ replace a fresh iron oxide blanket on the sand and rejuvenate its treatment capacity for additional arsenic removal. Several bench-scale experiments revealed that the resultant IOCS could treat arsenic-laden groundwater for extended periods of time before approaching its effective life cycle. The adsorption capacity for As(III) and As(V) was influenced by (1) the amount of iron oxide accumulated on the sand surface, (2) the system pH, and (3) competition for adsorption sites from other groundwater constituents such as silicon (Si) and total dissolved solids (TDS). Although the IOCS could be replenished several times before exhaustion, the life cycle of the FeOx reactive barrier may be limited by the gradual loss of hydraulic conductivity induced by the imminent reduction of pore space over time.

Abia, Thomas Sunday

2011-12-01T23:59:59.000Z

40

The studying of washing of arsenic and sulfur from coals having different ranges of arsenic contents  

SciTech Connect

To study the effectiveness of washing in removal of arsenic and sulfur from coals with different ranges of arsenic concentration, coal was divided into three groups on the basis of arsenic content: 0-5.5 mg/kg, 5.5 mg/kg-8.00 mg/kg, and over 8.00 mg/kg. The result shows that the arsenic in coals with higher arsenic content occurs mainly in an inorganic state and can be relatively easily removed. Arsenic removal is very difficult and less complete when the arsenic content is lower than 5.5 mg/kg because most of this arsenic is in an organic state. There is no relationship between washing rate of total sulfur and arsenic content, but the relationship between the washing rate of total sulfur and percent of organic sulfur is very strong.

Mingshi Wang; Dangyu Song; Baoshan Zheng; R.B. Finkelman [Institute of Geochemistry, Guiyang (China). State Key Lab of Environmental Geochemistry

2008-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Surface characterizatin of palladium-alumina sorbents for high-temperature capture of mercury and arsenic from fuel gas  

SciTech Connect

Coal gasification with subsequent cleanup of the resulting fuel gas is a way to reduce the impact of mercury and arsenic in the environment during power generation and on downstream catalytic processes in chemical production, The interactions of mercury and arsenic with PdlAl2D3 model thin film sorbents and PdlAh03 powders have been studied to determine the relative affinities of palladium for mercury and arsenic, and how they are affected by temperature and the presence of hydrogen sulfide in the fuel gas. The implications of the results on strategies for capturing the toxic metals using a sorbent bed are discussed.

Baltrus, J.P.; Granite, E.J.; Pennline, H.W.; Stanko, D.; Hamilton, H.; Rowsell, L.; Poulston, S.; Smith, A.; Chu, W.

2010-01-01T23:59:59.000Z

42

Removal of arsenic compounds from spent catecholated polymer  

DOE Patents (OSTI)

Described is a process for removing arsenic from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic bound to it from contacting petroliferous liquid as described above and involves: a. treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10 and, b. separating the solids and liquids from each other. Preferably the regeneration treatment is in two steps wherein step (a) is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, steps (a) and (b) are repeated using a bicarbonate.

Fish, Richard H. (Berkeley, CA)

1985-01-01T23:59:59.000Z

43

About Chemical Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemical Hazards What Is a Chemical Hazard? chemical hazards.jpg A chemical hazard is any substance that can cause harm, primarily to people. Chemicals of all kinds are stored in...

44

The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver  

DOE Green Energy (OSTI)

A comprehensive thermodynamic database based on the Helgeson-Kirkham-Flowers (HKF) equation of state was developed for metal complexes in hydrothermal systems. Because this equation of state has been shown to accurately predict standard partial molal thermodynamic properties of aqueous species at elevated temperatures and pressures, this study provides the necessary foundation for future exploration into transport and depositional processes in polymetallic ore deposits. The HKF equation of state parameters for gold, arsenic, antimony, mercury, and silver sulfide and hydroxide complexes were derived from experimental equilibrium constants using nonlinear regression calculations. In order to ensure that the resulting parameters were internally consistent, those experiments utilizing incompatible thermodynamic data were re-speciated prior to regression. Because new experimental studies were used to revise the HKF parameters for H2S0 and HS-1, those metal complexes for which HKF parameters had been previously derived were also updated. It was found that predicted thermodynamic properties of metal complexes are consistent with linear correlations between standard partial molal thermodynamic properties. This result allowed assessment of several complexes for which experimental data necessary to perform regression calculations was limited. Oxygen fugacity-temperature diagrams were calculated to illustrate how thermodynamic data improves our understanding of depositional processes. Predicted thermodynamic properties were used to investigate metal transport in Carlin-type gold deposits. Assuming a linear relationship between temperature and pressure, metals are predicted to predominantly be transported as sulfide complexes at a total aqueous sulfur concentration of 0.05 m. Also, the presence of arsenic and antimony mineral phases in the deposits are shown to restrict mineralization within a limited range of chemical conditions. Finally, at a lesser aqueous sulfur concentration of 0.01 m, host rock sulfidation can explain the origin of arsenic and antimony minerals within the paragenetic sequence.

Bessinger, Brad; Apps, John A.

2003-03-23T23:59:59.000Z

45

Treatment of metal-laden hazardous wastes with advanced clean coal technology by-products. Quarterly report, March 30, 1996--June 30, 1996  

SciTech Connect

Progress is described on the use of by-products form clean coal technologies for the treatment of hazardous wastes. During the third quarter of Phase 2, work continued on evaluating Phase 1 samples (including evaluation of a seventh waste), conducting scholarly work, preparing for field work, preparing and delivering presentations, and making additional outside contacts.

Cobb, J.T. Jr.; Neufeld, R.D.; Blachere, J.R. [and others

1998-04-01T23:59:59.000Z

46

Arsenic Remediation of Bangladesh Drinking Water using Iron-oxide...  

NLE Websites -- All DOE Office Websites (Extended Search)

Arsenic Remediation of Bangladesh Drinking Water using Iron-oxide Coated Coal Ash Title Arsenic Remediation of Bangladesh Drinking Water using Iron-oxide Coated Coal Ash...

47

Design of a rural water provision system to decrease arsenic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Lawrence Berkeley National Laboratory have invented ARUBA (Arsenic Removal Using Bottom Ash) a material that effectively and affordably removes high concentrations of arsenic from...

48

Method of arsenic removal from water  

DOE Patents (OSTI)

A method for low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form of activated iron adsorbent with a high affinity for arsenic. In laboratory tests, a miniscule 5 grams of pre-treated bottom ash was sufficient to remove the arsenic from 2 liters of 2400 ppb (parts per billion) arsenic-laden water to a level below 50 ppb (the present United States Environmental Protection Agency limit). By increasing the amount of pre-treated bottom ash, even lower levels of post-treatment arsenic are expected. It is further expected that this invention supplies a very low-cost solution to arsenic poisoning for large population segments.

Gadgil, Ashok (El Cerrito, CA)

2010-10-26T23:59:59.000Z

49

Modeling Arsenic Fate and Transport in Groundwater  

Science Conference Proceedings (OSTI)

The fate of arsenic in the environment depends on a variety of geochemical factors, including pH, oxidation and reduction potential, and the presence of competing solutes such as phosphates. Methods of predicting arsenic fate and transport are evolving to incorporate sophisticated geochemical simulations. While contaminant transport codes that utilize adsorption isotherm equations may be inadequate for arsenic prediction in certain cases, they may be very powerful tools in others. This report describes t...

2006-08-16T23:59:59.000Z

50

Arsenic Remediation Technologies for Groundwater and Soil  

Science Conference Proceedings (OSTI)

In October 2003, the Electric Power Research Institute (EPRI) released report 1008881, Arsenic Remediation Technologies for Soils and Groundwater. The report provides a review of available technologies for the remediation of arsenic in soils, groundwater, and surface water, primarily at substation sites. In most cases, the technologies reviewed are applicable to a much wider range of projects. In the six years since the publication of that report, the technologies for the remediation of arsenic have cont...

2009-09-22T23:59:59.000Z

51

Environmental Chemistry of Arsenic: A Literature Review  

Science Conference Proceedings (OSTI)

Arsenic is an element of significant interest to energy companies because of its occurrence in coal ash and its potential for release and migration in groundwater. This report summarizes technical information on the environmental chemistry of arsenic assembled from an extensive literature review. In particular, the report provides an in-depth look at the three most important sets of geochemical reactions relevant to understanding the environmental chemistry of arsenic -- precipitation-dissolution, reduct...

2000-12-15T23:59:59.000Z

52

Electrochemical Arsenic Remediation for Rural Bangladesh  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrochemical Arsenic Remediation for Rural Bangladesh NOTICE Due to the current lapse of federal funding, Berkeley Lab websites are accessible, but may not be updated until...

53

Berkeley Arsenic Alleviation Group - Lawrence Berkeley National ...  

the next house and use their neighbors well, thus negating the need for an arsenic?free water source. However ...

54

Cleaning Arsenic from Bangladesh's Water : Future Technologies...  

NLE Websites -- All DOE Office Websites (Extended Search)

Galitsky testing ARUBA in the lab. Scientist testing Arsenic Removal Using Bottom Ash (ARUBA) at the Berkeley Lab. Graph illustrating how well the ARUBA filtering sytems...

55

Weight dependence of arsenic concentration in the Arabian Sea tuna fish  

Science Conference Proceedings (OSTI)

The objective of the present investigation was to estimate the arsenic concentration in the edible muscle of Thunnus thynnus and Thunnus toggel (hereafter called tuna and longtail tune) as they have great commercial value. These fish are widely available along the coastal line of Pakistan and are consumed abundantly in large bulk. Thus, it was felt justifiable on the basis of safety of human health that data, in the first instance, be obtained on arsenic concentration in tuna as a function of weight to check whether the metal distribution was species-specific or it depended on individual mode of development. The data, the first of the kind so far presented on the Arabian Sea tuna, would thus provide the required baseline quantitative information needed in future studies on the physiological processes regulating the distribution and uptake of arsenic by these and other species of fish common to the region.

Ashraf, M.; Jaffar, M.

1988-02-01T23:59:59.000Z

56

Process for upgrading arsenic-containing oils  

DOE Patents (OSTI)

A method is provided for avoiding feed-transfer-line plugging by a deposit comprising arsenic in hydroprocessing an oil containing an arsenic contaminant. In the method, a mixture of hydrogen gas and the oil is formed in situ in a bed of porous particulate contact material.

Sullivan, Richard F. (San Rafael, CA)

1979-01-01T23:59:59.000Z

57

What is Hazardous Hazardous waste is  

E-Print Network (OSTI)

What is Hazardous Waste? Hazardous waste is any product charac- terized or labeled as toxic, reactive, cor- rosive, flammable, combustible that is unwanted, dis- carded or no longer useful. This waste may be harmful to human health and/ or the environment. Hazardous Waste Disposal EH&S x7233 E-Waste

de Lijser, Peter

58

Electrochemical arsenic remediation for rural Bangladesh  

Science Conference Proceedings (OSTI)

Arsenic in drinking water is a major public health problem threatening the lives of over 140 million people worldwide. In Bangladesh alone, up to 57 million people drink arsenic-laden water from shallow wells. ElectroChemical Arsenic Remediation(ECAR) overcomes many of the obstacles that plague current technologies and can be used affordably and on a small-scale, allowing for rapid dissemination into Bangladesh to address this arsenic crisis. In this work, ECAR was shown to effectively reduce 550 - 580 mu g=L arsenic (including both As[III]and As[V]in a 1:1 ratio) to below the WHO recommended maximum limit of 10 mu g=L in synthetic Bangladesh groundwater containing relevant concentrations of competitive ions such as phosphate, silicate, and bicarbonate. Arsenic removal capacity was found to be approximately constant within certain ranges of current density, but was found to change substantially between ranges. In order of decreasing arsenic removal capacity, the pattern was: 0.02 mA=cm2> 0.07 mA=cm2> 0.30 - 1.1 mA=cm2> 5.0 - 100 mA=cm2. Current processing time was found to effect arsenic removal capacity independent of either charge density or current density. Electrode polarization studies showed no passivation of the electrode in the tested range (up to current density 10 mA=cm2) and ruled out oxygen evolution as the cause of decreasing removal capacity with current density. Simple settling and decantation required approximately 3 days to achieve arsenic removal comparable to filtration with a 0.1 mu m membrane. X-ray Absorption Spectroscopy (XAS) showed that (1) there is no significant difference in the arsenic removal mechanism of ECAR during operation at different current densities and (2) the arsenic removal mechanism in ECAR is consistent with arsenate adsorption onto a homogenous Fe(III)oxyhydroxide similar in structure to 2-line ferrihydrite. ECAR effectively reduced high arsenic concentrations (100 - 500 mu g=L) in real Bangladesh tube well water collected from three regions to below the WHO limit of 10 mu g=L. Prototype fabrication and field testing are currently underway.

Addy, Susan Amrose

2009-01-01T23:59:59.000Z

59

Arsenic removal and stabilization by synthesized pyrite  

E-Print Network (OSTI)

Arsenic is ubiquitous whether it is naturally occurring or produced by humans. It is found at sites on the National Priority List and at sites operated by DOE, where it is the second most commonly found contaminant. More wastes containing arsenic will be produced due to the lowering of the Maximum Contaminant Level (MCL) for arsenic in drinking water which will result in more treatment facilities for arsenic removal that will generate residuals. Furthermore, arsenic can be released from such wastes under the reduced conditions that are found in landfills. Pyrite (FeS2) is believed to be a compound that has a high affinity for arsenic and is stable under anoxic conditions. The first task of this research was to develop a method for making pyrite crystals of defined size with minimal reaction time and at high yield. Effects on the synthesis of pyrite particles of pH, the ratio of Fe/S, temperature and reaction time were investigated in batch reactor systems. Pyrite was synthesized within 24 hours at pH values ranging from pH 3.6 through pH 5.6, and at a ratio of Fe/S of 0.5. X-ray diffraction and scanning electron microscopy were used to size and characterize the pyrite particles. Experimental and analytical procedures developed for this work, included a hydride generation atomic absorption spectrometry method for measuring arsenic species (As(III), As(V)). The synthesized pyrite was applied to remove arsenic and its maximum capacity for arsenic removal was measured in batch adsorption experiments to be 3.23 ?mol/g for As(III) and 113 ?mol/g for As(V). Information obtained on the characteristics of chemical species before and after the reaction with arsenic showed that iron and sulfur were oxidized. Last, how strongly arsenic was bound to pyrite was investigated and it was determined that release of arsenic from As(III)-pyrite is not affected by pH, but release from As(V)-pyrite is affected by pH with minimum release in the range pH 5 to pH 8.

Song, Jin Kun

2008-12-01T23:59:59.000Z

60

Heavy metals in suspended powders from steelmaking  

Science Conference Proceedings (OSTI)

Motivations for controlling heavy metal concentrations in gas streams are diverse. Some of them are dangerous to health or to the environment (e.g. Hg, Cd, As, Pb, Cr), some may cause corrosion (e.g. Zn, Pb), some are harmful in other ways (e.g. Arsenic ... Keywords: anthropogenic sources, emissions, heavy metals, human health, pollution of ecosystem, toxic

Cristiana-Zizi Rizescu; Elena-Valentina Stoian; Aurora-Anca Poinescu; Sofia Teodorescu

2010-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Hazard Analysis Database report  

Science Conference Proceedings (OSTI)

This document describes and defines the Hazard Analysis Database for the Tank Waste Remediation System Final Safety Analysis Report.

Niemi, B.J.

1997-08-12T23:59:59.000Z

62

Arsenic Geochemistry in Source Waters of the Los Angeles Aqueduct  

E-Print Network (OSTI)

has focused on arsenic geochemistry in natural waters. ThisG402 XU2-7 ARSENIC GEOCHEMISTRY IN SOURCE WATERS OF T H EOrganism Interactions, Geochemistry, Ground Water Quality,

Hering, Janet G; Wilkie, Jennifer A; Chiu, Van Q

1997-01-01T23:59:59.000Z

63

OSHA List of Hazardous Chemicals  

NLE Websites -- All DOE Office Websites (Extended Search)

OSHA List of Hazardous Chemicals OSHA List of Hazardous Chemicals ACETALDEHYDE ACETAMIDE ACETIC ACID ACETIC ANHYDRIDE ACETONE ACETONItr ILE ACETYLAMINOFLUORENE, 2- ACETYLENE ACETYLENE DICHLORIDE ACETYLENE TETRABROMIDE ACETYLSALICYLIC ACID (ASPIRIN) ACROLEIN ACRYLAMIDE ACRYLIC ACID ACRYLONITRILE ACTINOMYCIN D ADRIAMYCIN AFLATOXINS ALDRIN ALLYL ALCOHOL ALLYL CHLORIDE ALLYL GLYCIDYL ETHER (AGE) ALLYL PROPYL DISULFIDE ALUMINA ALUMINUM, METAL DUST, AS AL ALUMINUM, PYRO POWDERS, AS AL ALUMINUM, SOLUBLE SALTS, AS AL ALUMINUM, WELDING FUMES, AS AL ALUMINUM, ALKYLS, NOT OTHERWISE CLASSIFIED, AS AL ALUMINUM OXIDE, AS AL AMINOANTHRAQUINONE (AAQ), AMINOAZOTOLUENE, O- AMINOBIPHENYL, 4- AMINOETHANOL, 2- AMINO-2-METHYLANTHRAQUINONE, 1- AMINO-5-(5-NITRO-2-FURYL)- -1, 3,4-THIADIADIAZOLE, 2- AMINOPYRIDINE, 2- AMINO-1,2,4-TRIAZOLE, 3-

64

Solid materials for removing arsenic and method thereof  

Science Conference Proceedings (OSTI)

Solid materials have been developed to remove arsenic compounds from aqueous media. The arsenic is removed by passing the aqueous phase through the solid materials which can be in molded, granular, or powder form. The solid materials adsorb the arsenic leaving a purified aqueous stream. The materials are aerogels or xerogels and aerogels or xerogels and solid support structure, e.g., granulated activated carbon (GAC), mixtures. The species-specific adsorption occurs through specific chemical modifications of the solids tailored towards arsenic.

Coronado, Paul R. (Livermore, CA); Coleman, Sabre J. (Oakland, CA); Sanner, Robert D. (Livermore, CA); Dias, Victoria L. (Livermore, CA); Reynolds, John G. (San Ramon, CA)

2010-09-28T23:59:59.000Z

65

Solid materials for removing arsenic and method thereof  

DOE Patents (OSTI)

Solid materials have been developed to remove arsenic compounds from aqueous media. The arsenic is removed by passing the aqueous phase through the solid materials which can be in molded, granular, or powder form. The solid materials adsorb the arsenic leaving a purified aqueous stream. The materials are aerogels or xerogels and aerogels or xerogels and solid support structure, e.g., granulated activated carbon (GAC), mixtures. The species-specific adsorption occurs through specific chemical modifications of the solids tailored towards arsenic.

Coronado, Paul R. (Livermore, CA); Coleman, Sabre J. (Oakland, CA); Sanner, Robert D. (Livermore, CA); Dias, Victoria L. (Livermore, CA); Reynolds, John G. (San Ramon, CA)

2008-07-01T23:59:59.000Z

66

Chemical Constituents in Coal Combustion Product Leachate: Arsenic  

Science Conference Proceedings (OSTI)

This report provides comprehensive information on the environmental behavior of arsenic. Included are discussions of arsenics occurrence in soil and water, occurrence in coal combustion products (CCPs), CCP leaching characteristics, effects on human health and ecology, geochemistry, and treatment/remediation options.

2008-11-25T23:59:59.000Z

67

Iron Biomineralization: Implications on the Fate of Arsenic in Landfills  

E-Print Network (OSTI)

these arsenic-bearing solid residuals (ABSR) pass the Toxicity Characteristic Leaching Procedure (TCLP in our laboratory as well as other labs, has shown that the TCLP greatly underestimates the ABSR leaching concentrations of As. Iron reduction led to arsenic release into solution, where arsenic was reduced. #12;Figure

Cushing, Jim. M.

68

Hazard Analysis Database Report  

Science Conference Proceedings (OSTI)

The Hazard Analysis Database was developed in conjunction with the hazard analysis activities conducted in accordance with DOE-STD-3009-94, Preparation Guide for U S . Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports, for HNF-SD-WM-SAR-067, Tank Farms Final Safety Analysis Report (FSAR). The FSAR is part of the approved Authorization Basis (AB) for the River Protection Project (RPP). This document describes, identifies, and defines the contents and structure of the Tank Farms FSAR Hazard Analysis Database and documents the configuration control changes made to the database. The Hazard Analysis Database contains the collection of information generated during the initial hazard evaluations and the subsequent hazard and accident analysis activities. The Hazard Analysis Database supports the preparation of Chapters 3 ,4 , and 5 of the Tank Farms FSAR and the Unreviewed Safety Question (USQ) process and consists of two major, interrelated data sets: (1) Hazard Analysis Database: Data from the results of the hazard evaluations, and (2) Hazard Topography Database: Data from the system familiarization and hazard identification.

GRAMS, W.H.

2000-12-28T23:59:59.000Z

69

Arsenic Speciation in Blue Mussels (Mytilus edulis) Along a Highly Contaminated Arsenic Gradient  

Science Conference Proceedings (OSTI)

Arsenic is naturally present in marine ecosystems, and these can become contaminated from mining activities, which may be of toxicological concern to organisms that bioaccumulate the metalloid into their tissues. The toxic properties of arsenic are dependent on the chemical form in which it is found (e.g., toxic inorganic arsenicals vs nontoxic arsenobetaine), and two analytical techniques, high performance liquid chromatography coupled with inductively coupled plasma mass spectrometry (HPLC-ICP-MS) and X-ray absorption spectroscopy (XAS), were used in the present study to examine the arsenic species distribution in blue mussels (Mytilus edulis) obtained from an area where there is a strong arsenic concentration gradient as a consequence of mining impacted sediments. A strong positive correlation was observed between the concentration of inorganic arsenic species (arsenic compounds with no As-C bonds) and total arsenic concentrations present in M. edulis tissues (R{sup 2} = 0.983), which could result in significant toxicological consequences to the mussels and higher trophic consumers. However, concentrations of organoarsenicals, dominated by arsenobetaine, remained relatively constant regardless of the increasing As concentration in M. edulis tissue (R{sup 2} = 0.307). XANES bulk analysis and XAS two-dimensional mapping of wet M. edulis tissue revealed the presence of predominantly arsenic-sulfur compounds. The XAS mapping revealed that the As(III)-S and/or As(III) compounds were concentrated in the digestive gland. However, arsenobetaine was found in small and similar concentrations in the digestive gland as well as the surrounding tissue suggesting arsenobetaine may being used in all of the mussel's cells in a physiological function such as an intracellular osmolyte.

Whaley-Martin, K.J.; Koch, I.; Moriarty, M.; Reimer, K.J. (Royal)

2012-11-01T23:59:59.000Z

70

Prediction of the thermodynamic properties of gold, arsenic, and  

Office of Scientific and Technical Information (OSTI)

The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver Brad Bessinger Exponent, Inc. 5335 Meadows Road, Suite 365 Lake Oswego, OR 97035 John A. Apps Earth Sciences Division Lawrence Berkeley National Laboratory University of California, Berkeley, California 94720 March 2005 This work was supported by the Director, Office of Science Office of Basic Energy Sciences of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. Abstract A comprehensive thermodynamic database based on the Helgeson-Kirkham-Flowers (HKF) equation of state was developed for metal complexes in hydrothermal systems. Because this equation of state has been shown to accurately predict standard partial molal thermodynamic properties of

71

Hazard Analysis Database Report  

Science Conference Proceedings (OSTI)

The Hazard Analysis Database was developed in conjunction with the hazard analysis activities conducted in accordance with DOE-STD-3009-94, Preparation Guide for US Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports, for the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR). The FSAR is part of the approved TWRS Authorization Basis (AB). This document describes, identifies, and defines the contents and structure of the TWRS FSAR Hazard Analysis Database and documents the configuration control changes made to the database. The TWRS Hazard Analysis Database contains the collection of information generated during the initial hazard evaluations and the subsequent hazard and accident analysis activities. The database supports the preparation of Chapters 3,4, and 5 of the TWRS FSAR and the USQ process and consists of two major, interrelated data sets: (1) Hazard Evaluation Database--Data from the results of the hazard evaluations; and (2) Hazard Topography Database--Data from the system familiarization and hazard identification.

GAULT, G.W.

1999-10-13T23:59:59.000Z

72

About Chemical Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemical Hazards Chemical Hazards What Is a Chemical Hazard? chemical hazards.jpg A chemical hazard is any substance that can cause harm, primarily to people. Chemicals of all kinds are stored in our homes and can result in serious injuries if not properly handled. Household items such as bleach can result in harmful chlorine gas or hydrochloric acid if carelessly used. Gasoline fumes from containers for lawnmowers or boats can result in major health hazards if inhaled. DOE Oak Ridge uses thousands of chemicals in its varied research and other operations. New chemicals are or can be created as a result of the research or other activities. DOE follows national safety requirements in storing and handling these chemicals to minimize the risk of injuries from its chemical usage. However, accidents can occur despite careful attention to proper handling and storage procedures.

73

Method for encapsulating and isolating hazardous cations, medium for encapsulating and isolating hazardous cations  

DOE Patents (OSTI)

The problems associated with the disposal of toxic metals in an environmentally acceptable manner continues to plague industry. Such metals as nickel, vanadium, molybdenum, cobalt, iron, and antimony present physiological and ecological challenges that are best addressed through minimization of exposure and dispersion. A method for encapsulating hazardous cations is provided comprising supplying a pretreated substrate containing the cations; contacting the substrate with an organo-silane compound to form a coating on the substrate; and allowing the coating to cure. A medium for containing hazardous cations is also provided, comprising a substrate having ion-exchange capacity and a silane-containing coating on the substrate.

Wasserman, S.R.; Anderson, K.B.; Song, K.; Yuchs, S.E.; Marshall, C.L.

1996-12-31T23:59:59.000Z

74

Hazardous Material Security (Maryland)  

Energy.gov (U.S. Department of Energy (DOE))

All facilities processing, storing, managing, or transporting hazardous materials must be evaluated every five years for security issues. A report must be submitted to the Department of the...

75

Radiation Hazards Program (Minnesota)  

Energy.gov (U.S. Department of Energy (DOE))

These regulations, promulgated by the Department of Health, set allowable radiation standards and mitigation practices, as well as procedures for the transportation of hazardous material.

76

Hazardous Waste Management Training  

E-Print Network (OSTI)

Hazardous Waste Management Training Persons (including faculty, staff and students) working be thoroughly familiar with waste handling and emergency procedures ap- plicable to their job responsibilities before handling hazardous waste. Departments are re- quired to keep records of training for as long

Dai, Pengcheng

77

Design Strategies and Preliminary Prototype for a Low-Cost Arsenic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Researchers have invented a material called ARUBA - Arsenic Removal Using Bottom Ash - that effectively and affordably removes arsenic from Bangladesh groundwater. Through...

78

Experiment Hazard Class 9 - Magnets  

NLE Websites -- All DOE Office Websites (Extended Search)

hazard classification applies to all experiments involving magnets, magnetic fields, and electric fields. Other hazard classifications such as electrical safety and their...

79

Hazardous Waste Management (New Mexico)  

Energy.gov (U.S. Department of Energy (DOE))

The New Mexico Environment Department's Hazardous Waste Bureau is responsible for the management of hazardous waste in the state. The Bureau enforces the rules established by the Environmental...

80

Removal of arsenic, vanadium, and/or nickel compounds from petroliferous liquids  

DOE Patents (OSTI)

Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves: treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and, separating the solids from the liquid; and then treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and, separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.

Fish, Richard H. (Berkeley, CA)

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Removal of arsenic, vanadium and/or nickel compounds from spent catecholated polymer  

DOE Patents (OSTI)

Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves: treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and, separating the solids from the liquid; and then treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and, separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.

Fish, Richard H. (Berkeley, CA)

1987-01-01T23:59:59.000Z

82

Removal of arsenic, vanadium and/or nickel compounds from spent catecholated polymer  

DOE Patents (OSTI)

Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves: treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and, separating the solids from the liquid; and then treating said spent catecholated polystyrene, at a temperature in the range of about 20 to 100 C with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and, separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.

Fish, R.H.

1987-04-21T23:59:59.000Z

83

Removal of arsenic, vanadium, and/or nickel compounds from petroliferous liquids  

DOE Patents (OSTI)

Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids (shale oil, SRC, etc.) by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves: treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and, separating the solids from the liquid; and then treating said spent catecholated polystyrene, at a temperature in the range of about 20/sup 0/ to 100/sup 0/C with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and, separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.

Fish, R.H.

1985-05-17T23:59:59.000Z

84

Mercury and Other Trace Metals in Coal  

Science Conference Proceedings (OSTI)

This document summarizes the trace metal analyses of more than 150 as-received bituminous, sub-bituminous, and lignite coal samples from full-scale power plants. Analyses for mercury, arsenic, beryllium, cadmium, chromium, copper, nickel, and lead offer a benchmark for utilities to compare and contrast their own estimates and measurements of trace element content in coal.

1997-02-25T23:59:59.000Z

85

Surveillance Guides - Hazards Control  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazards Control Hazards Control 1.0 Objective The objective of this surveillance is to evaluate the effectiveness of the contractor's programs and policy for establishing controls to mitigate hazards affecting the public, worker, and environment. 2.0 References 2.1 DOE 4330.4B Maintenance Management Program 2.2 48 CFR 1970.5204-2 Department of Energy Acquisition Regulations 3.0 Requirements Implemented This surveillance is conducted to verify implementation of DOE 450.4-1A Volume 2 Appendix E core expectation #3 (CE II-3). CE II-3: An integrated process has been established and is utilized to develop controls which mitigate the identified hazards present within a facility or activity. The set of controls ensure adequate protection of the public, worker, and the environment and are established as agreed upon by DOE.

86

CHSP: HAZARD CONTROLS  

NLE Websites -- All DOE Office Websites (Extended Search)

HYGIENE HYGIENE AND SAFETY PLAN CHSP SITE MAP HAZARD CONTROLS CONTROLS FOR HAZARDOUS MATERIALS arrow image WORK PRACTICE CONTROLS arrow image CHEMICAL STORAGE GUIDELINES DECOMISSIONING LAB AND SHOP SPACES SPECIFIC CONTROLS AND PROCEDURES arrow image EMERGENCY PROCEDURES AND EQUIPMENT arrow image APPENDICES arrow image FAQs QUESTIONS Search the CHSP: > Go spacer image EH&S Home PUB 3000 LBNL Home LBNL A-Z Index LBNL Search LBNL Phone Book Privacy & Security Notice spacer spacer image spacer image spacer image HAZARD CONTROLS This section discusses control procedures for limiting employee exposure to chemical hazards. Technical Areas Technical areas include laboratories, shops, workrooms, and similar areas where non-administrative activities are performed. For the purpose of the

87

Job Hazard Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Step by Step Instructions - Page 1 of 2 Helpful Information STEP 1. Log in to the EH&S Job Hazards Analysis (JHA) system at https:ehswprod.lbl.govehstrainingjhalogin.aspx...

88

K Basin Hazard Analysis  

Science Conference Proceedings (OSTI)

This report describes the methodology used in conducting the K Basins Hazard Analysis, which provides the foundation for the K Basins Final Safety Analysis Report. This hazard analysis was performed in accordance with guidance provided by DOE-STD-3009-94, Preparation Guide for U. S. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports and implements the requirements of DOE Order 5480.23, Nuclear Safety Analysis Report.

PECH, S.H.

2000-08-23T23:59:59.000Z

89

Screening of low cost sorbents for arsenic and mercury capture in gasification systems  

Science Conference Proceedings (OSTI)

A novel laboratory-scale fixed-bed reactor has been developed to investigate trace metal capture on selected sorbents for cleaning the hot raw gas in Integrated Gasification Combined Cycle (IGCC) power plants. The new reactor design is presented, together with initial results for mercury and arsenic capture on five sorbents. It was expected that the capture efficiency of sorbents would decrease with increasing temperature. However, a commercial activated carbon, Norit Darco 'Hg', and a pyrolysis char prepared from scrap tire rubber exhibit similar efficiencies for arsenic at 200 and at 400{sup o}C (70% and 50%, respectively). Meta-kaolinite and fly ash both exhibit an efficiency of around 50% at 200{sup o}C, which then dropped as the test temperature was increased to 400{sup o}C. Activated scrap tire char performed better at 200{sup o}C than the pyrolysis char showing an arsenic capture capacity similar to that of commercial Norit Darco 'Hg'; however, efficiency dropped to below 40% at 400{sup o}C. These results suggest that the capture mechanism of arsenic (As4) is more complex than purely physical adsorption onto the sorbents. Certain elements within the sorbents may have significant importance for chemical adsorption, in addition to the effect of surface area, as determined by the BET method. This was indeed the case for the mercury capture efficiency for all four sorbents tested. Three of the sorbents tested retained 90% of the mercury when operated at 100{sup o}C. As the temperature increased, the efficiency of activated carbon and pyrolysis char reduced significantly. Curiously, despite having the smallest Brunauer-Emmet-Teller (BET) surface area, a pf-combustion ash was the most effective in capturing mercury over the temperature range studied. These observations suggest that the observed mercury capture was not purely physical adsorption but a combination of physical and chemical processes. 27 refs., 4 figs., 4 tabs.

Cedric Charpenteau; Revata Seneviratne; Anthe George; Marcos Millan; Denis R. Dugwell; Rafael Kandiyoti [Imperial College London, London (United Kingdom). Department of Chemical Engineering

2007-09-15T23:59:59.000Z

90

Life Redefined: Microbes Built with Arsenic  

DOE Green Energy (OSTI)

Life can survive in many harsh environments, from extreme heat to the presence of deadly chemicals. However, life as we know it has always been based on the same six elements -- carbon, oxygen, nitrogen, hydrogen, sulfur and phosphorus. Now it appears that even this rule has an exception. In the saline and poisonous environment of Mono Lake, researchers have found a bacterium that can grow by incorporating arsenic into its structure in place of phosphorus. X-ray images taken at SLAC's synchrotron light source reveal that this microbe may even use arsenic as a building block for DNA. Please join us as we describe this discovery, which rewrites the textbook description of how living cells work.

Webb, Sam (SLAC and Felisa Wolfe-Simon, NASA and U.S. Geological Survey)

2011-03-22T23:59:59.000Z

91

NEHRP - Advisory Committee on Earthquake Hazards ...  

Science Conference Proceedings (OSTI)

NEHRP logo National Earthquake Hazards Reduction Program. ... Advisory Committee on Earthquake Hazards Reduction. Highlights. ...

92

Chemical process hazards analysis  

SciTech Connect

The Office of Worker Health and Safety (EH-5) under the Assistant Secretary for the Environment, Safety and Health of the US Department (DOE) has published two handbooks for use by DOE contractors managing facilities and processes covered by the Occupational Safety and Health Administration (OSHA) Rule for Process Safety Management of Highly Hazardous Chemicals (29 CFR 1910.119), herein referred to as the PSM Rule. The PSM Rule contains an integrated set of chemical process safety management elements designed to prevent chemical releases that can lead to catastrophic fires, explosions, or toxic exposures. The purpose of the two handbooks, ``Process Safety Management for Highly Hazardous Chemicals`` and ``Chemical Process Hazards Analysis,`` is to facilitate implementation of the provisions of the PSM Rule within the DOE. The purpose of this handbook ``Chemical Process Hazards Analysis,`` is to facilitate, within the DOE, the performance of chemical process hazards analyses (PrHAs) as required under the PSM Rule. It provides basic information for the performance of PrHAs, and should not be considered a complete resource on PrHA methods. Likewise, to determine if a facility is covered by the PSM rule, the reader should refer to the handbook, ``Process Safety Management for Highly Hazardous Chemicals`` (DOE- HDBK-1101-96). Promulgation of the PSM Rule has heightened the awareness of chemical safety management issues within the DOE. This handbook is intended for use by DOE facilities and processes covered by the PSM rule to facilitate contractor implementation of the PrHA element of the PSM Rule. However, contractors whose facilities and processes not covered by the PSM Rule may also use this handbook as a basis for conducting process hazards analyses as part of their good management practices. This handbook explains the minimum requirements for PrHAs outlined in the PSM Rule. Nowhere have requirements been added beyond what is specifically required by the rule.

NONE

1996-02-01T23:59:59.000Z

93

In situ chemical fixation of arsenic-contaminated soils: An experimental study  

E-Print Network (OSTI)

arsenic trioxide with a trade name Anaconda fromformer Anaconda smelter as a major ingredient during the

Yang, Li; Donahoe, Rona J.; Redwine, James C.

2007-01-01T23:59:59.000Z

94

Identification of Aircraft Hazards  

Science Conference Proceedings (OSTI)

Aircraft hazards were determined to be potentially applicable to a repository at Yucca Mountain in ''Monitored Geological Repository External Events Hazards Screening Analysis'' (BSC 2005 [DIRS 174235], Section 6.4.1). That determination was conservatively based upon limited knowledge of flight data in the area of concern and upon crash data for aircraft of the type flying near Yucca Mountain. The purpose of this report is to identify specific aircraft hazards that may be applicable to a monitored geologic repository (MGR) at Yucca Mountain, using NUREG-0800, ''Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants'' (NRC 1987 [DIRS 103124], Section 3.5.1.6), as guidance for the inclusion or exclusion of identified aircraft hazards. The intended use of this report is to provide inputs for further screening and analysis of identified aircraft hazards based upon the criteria that apply to Category 1 and Category 2 event sequence analyses as defined in 10 CFR 63.2 [DIRS 176544] (Section 4). The scope of this report includes the evaluation of military, private, and commercial use of airspace in the 100-mile regional setting of the repository at Yucca Mountain with the potential for reducing the regional setting to a more manageable size after consideration of applicable screening criteria (Section 7).

K. Ashley

2006-12-08T23:59:59.000Z

95

Arsenic Health and Ecological Effects: Soil and Water  

Science Conference Proceedings (OSTI)

Arsenic is a naturally occurring element found throughout the environment in many different forms. It is also found in coal and thus coal combustion products and can be associated with other power plant generation and delivery operations. This report summarizes information on the toxicity of arsenic in the environment and derives risk factors based on this information.

2007-09-17T23:59:59.000Z

96

Arsenic Removal by Photochemical Methods: Nanoparticulate Zerovalent Iron  

NLE Websites -- All DOE Office Websites (Extended Search)

Arsenic Removal by Photochemical Methods: Nanoparticulate Zerovalent Iron Arsenic Removal by Photochemical Methods: Nanoparticulate Zerovalent Iron and Heterogeneous Photocatalysis with TiO2 Speaker(s): Marta Litter Date: November 19, 2010 - 11:00am Location: 90-3122 Seminar Host/Point of Contact: Hugo Destaillats Arsenic in groundwater is a dramatic global problem due to the high incidence of arsenicosis or HACRE (Chronic Endemic Regional Hydro-arsenicism, Hidroarsenicismo Crónico Regional Endémico in Spanish), a severe illness causing skin lesions and cancer in extended regions of the world. For this reason, research on low-cost technologies for As removal to be applied in isolated, poor, rural locations is mandatory. This seminar will present a brief overview of arsenic pollution issues and mitigation needs in Latin America. It will also present results on As(V) removal using

97

Assessing the Risk of Arsenic Ingestion | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

An Electronic Dance of Spins and Orbits An Electronic Dance of Spins and Orbits How a Virus Prepares to Infect Cells Magnetic Switching under Pressure Revealing the Secrets of Chemical Bath Deposition DNA Repair Protein Caught in the Act of Molecular Theft Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Assessing the Risk of Arsenic Ingestion DECEMBER 17, 2010 Bookmark and Share Mineralogy, percent arsenic bioaccessibility and total arsenic concentration of samples from Nova Scotia mine tailings. Detailed mineralogical analyses of individual samples revealed up to seven arsenic species in individual samples (six shown here as major arsenic phases). Results of a physiologically based extraction test are for the < 150 µm

98

Missouri Hazardous Waste Management Law (Missouri)  

Energy.gov (U.S. Department of Energy (DOE))

The Hazardous Waste Program, administered by the Hazardous Waste Management Commission in the Department of Natural Resources, regulates the processing, transportation, and disposal of hazardous...

99

Mediated electrochemical hazardous waste destruction  

SciTech Connect

There are few permitted processes for mixed waste (radioactive plus chemically hazardous) treatment. We are developing electrochemical processes that convert the toxic organic components of mixed waste to water, carbon dioxide, an innocuous anions such as chloride. Aggressive oxidizer ions such as Ag{sup 2+} or Ce{sup +4} are produced at an anode. These can attack the organic molecules directly. They can also attack water which yields hydroxyl free radicals that in turn attack the organic molecules. The condensed (i.e., solid and/or liquid) effluent streams contain the inorganic radionuclide forms. These may be treated with existing technology and prepared for final disposal. Kinetics and the extent of destruction of some toxic organics have been measured. Depending on how the process is operated, coulombic efficiency can be nearly 100%. In addition, hazardous organic materials are becoming very expensive to dispose of and when they are combined with transuranic radioactive elements no processes are presently permitted. Mediated electrochemical oxidation is an ambient-temperature aqueous-phase process that can be used to oxidize organic components of mixed wastes. Problems associated with incineration, such as high-temperature volatilization of radionuclides, are avoided. Historically, Ag (2) has been used as a mediator in this process. Fe(6) and Co(3) are attractive alternatives to Ag(2) since they form soluble chlorides during the destruction of chlorinated solvents. Furthermore, silver itself is a toxic heavy metal. Quantitative data has been obtained for the complete oxidation of ethylene glycol by Fe(6) and Co(3). Though ethylene glycol is a nonhalogenated organic, this data has enabled us to make direct comparisons of activities of Fe(6) and Co(3) with Ag(2). Very good quantitative data for the oxidation of ethylene glycol by Ag(2) had already been collected. 4 refs., 6 figs.

Hickman, R.G.; Farmer, J.C.; Wang, F.T.

1991-08-01T23:59:59.000Z

100

Report Wildland Fire Area Hazard  

NLE Websites -- All DOE Office Websites (Extended Search)

Report Wildland Fire Area Hazard Report Wildland Fire Area Hazard Report Wildland Fire Area Hazard Report wildland fire area hazards or incidents that are non-life threatening only. Call 911 for all emergencies that require immediate assistance. How to report wildland fire hazard Use the following form to report any wildland fire area hazards or incidents that are non-life threatening only. Call 911 for all emergencies that require immediate assistance. Fill out this form as completely as possible so we can better assess the hazard. All submissions will be assessed as promptly as possible. For assistance with a non-emergency situation, contact the Operations Support Center at 667-6211. Name (optional): Hazard Type (check one): Wildlife Sighting (check box if animal poses serious threat) Trails (access/egress)

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Arsenic exposure in children living near a former copper smelter  

SciTech Connect

About 10,000 people live in communities surrounding the former copper smelter at Anaconda, Montana. Most of these people live in the town of Anaconda, which is generally upwind of the smelter. The smelter ceased operations in 1980, after almost a century of ore processing. Soil and dust on the smelter site and in the vicinity remain contaminated with arsenic, although at this time air and drinking water arsenic levels are not elevated. Results of soil and dust sampling for arsenic in the communities around the smelter are reported. In the town of Anaconda, surface soil arsenic levels from residential sites have averaged around 100 ppm or greater. Young children are generally believed to be the population with the most nonoccupational exposure to soil. Several models of exposure to environmental arsenic in the Anaconda area have predicted that children living in all communities surrounding the smelter would be having significant and measurable exposure to arsenic. Two exposures surveys, conducted while the smelter was operative, demonstrated that excess exposure to arsenic was occurring in young children. Until the present surveys, no exposure data had been collected since the smelter was closed.

Binder, S.; Forney, D.; Kaye, W.; Paschal, D.

1987-07-01T23:59:59.000Z

102

Arsenic in drinking water and lung cancer: A systematic review  

SciTech Connect

Exposure to inorganic arsenic via drinking water is a growing public health concern. We conducted a systematic review of the literature examining the association between arsenic in drinking water and the risk of lung cancer in humans. Towards this aim, we searched electronic databases for articles published through April 2006. Nine ecological studies, two case-control studies, and six cohort studies were identified. The majority of the studies were conducted in areas of high arsenic exposure (100 {mu}g/L) such as southwestern Taiwan, the Niigata Prefecture, Japan, and Northern Chile. Most of the studies reported markedly higher risks of lung cancer mortality or incidence in high arsenic areas compared to the general population or a low arsenic exposed reference group. The quality assessment showed that, among the studies identified, only four assessed arsenic exposure at the individual level. Further, only one of the ecological studies presented results adjusted for potential confounders other than age; of the cohort and case-control studies, only one-half adjusted for cigarette smoking status in the analysis. Despite these methodologic limitations, the consistent observation of strong, statistically significant associations from different study designs carried out in different regions provide support for a causal association between ingesting drinking water with high concentrations of arsenic and lung cancer. The lung cancer risk at lower exposure concentrations remains uncertain.

Celik, Ismail [Department of Medical Oncology, Hacettepe University Institute of Oncology, Ankara (Turkey); Gallicchio, Lisa [Prevention and Research Center, Mercy Medical Center (United States); Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health (United States); Boyd, Kristina; Lam, Tram K.; Matanoski, Genevieve [Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health (United States); Tao Xuguang [Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health (United States); Department of Occupational and Environmental Medicine, Johns Hopkins University School of Medicine (United States); Shiels, Meredith; Hammond, Edward [Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health (United States); Chen Liwei [Department of International Health, Center for Human Nutrition, Johns Hopkins University Bloomberg School of Public Health (United States); Robinson, Karen A. [Department of General Internal Medicine, Johns Hopkins University School of Medicine (United States); Caulfield, Laura E. [Department of International Health, Center for Human Nutrition, Johns Hopkins University Bloomberg School of Public Health (United States); Herman, James G. [Department of Oncology, Johns Hopkins University School of Medicine (United States); Guallar, Eliseo [Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health (United States); Alberg, Anthony J. [Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health (United States); Cancer Prevention and Control Program, Hollings Cancer Center, and Department of Biostatistics, Bioinformatics and Epidemiology, Medical University of South Carolina (United States)], E-mail: alberg@musc.edu

2008-09-15T23:59:59.000Z

103

Hazardous Waste Management Keith Williams  

E-Print Network (OSTI)

Hazardous Waste Management Keith Williams DES ­ Environmental Affairs Extension 53163 #12,100 Locally · 1998 Univ of Va $33,990 · 1998 Univ. of MD $0 !!!!! #12;Hazardous Waste Disposal Procedures Hazardous (Chemical) Waste Management in University of Maryland Laboratories o All laboratories and work

Appelbaum, Ian

104

Removing Arsenic from Contaminated Drinking Water in Rural Bangladesh:  

NLE Websites -- All DOE Office Websites (Extended Search)

Removing Arsenic from Contaminated Drinking Water in Rural Bangladesh: Removing Arsenic from Contaminated Drinking Water in Rural Bangladesh: Recent Fieldwork Results & Policy Implications Title Removing Arsenic from Contaminated Drinking Water in Rural Bangladesh: Recent Fieldwork Results & Policy Implications Publication Type Report Year of Publication 2009 Authors Mathieu, Johanna L., Ashok J. Gadgil, Kristin Kowolik, and Susan E. Addy Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract of arsenic from drinking water in Bangladesh. During fieldwork in four sub-districts of the country, ARUBA reduced arsenic levels ranging from 200 to 900 ppb to below the Bangladesh standard of 50 ppb. The technology is cost-effective because the substrate-bottom ash from coal fired power plants-is a waste material readily available in South Asia. In comparison to similar technologies, ARUBA uses less media for arsenic removal due to its high surface area to volume ratio. Hence, less waste is produced. A number of experiments were conducted in Bangladesh to determine the effectiveness of various water treatment protocols. It was found that (1) ARUBA removes more thanhalf of the arsenic from water within five minutes of treatment, (2) ARUBA, that has settled at the bottom of a treatment vessel, continues to remove arsenic for 2-3 days, (3) ARUBA's arsenic removal efficiency can be improved through sequential partial dosing (adding a given amount of ARUBA in fractions versus all at once), and (4) allowing water to first stand for two to three days followed by treatment with ARUBA produced final arsenic levels ten times lower than treating water directly out of the well. Our findings imply a number of tradeoffs between ARUBA's effective arsenic removal capacity, treatment system costs, and waste output. These tradeoffs, some a function of arsenic-related policies in Bangladesh (e.g., waste disposal regulations), must be considered when designing anarsenic removal system. We propose that the most attractive option is to use ARUBA in communityscale water treatment centers, installed as public-private partnerships, in Bangladeshi villages

105

Arsenic Removal from Groundwater Using Iron Electrocoagulation...  

NLE Websites -- All DOE Office Websites (Extended Search)

sludge ( 80 - 120 mgL), when tested with the Toxic Characteristic Leachate Protocol (TCLP), is characterized as non-hazardous. While our focus is on developing a practical...

106

Biogenic formation of photoactive arsenic-sulfide nanotubes by Shewanella sp. strain HN-41  

SciTech Connect

Microorganisms facilitate the formation of a wide range of minerals that have unique physical and chemical properties as well as morphologies that are not produced by abiotic processes. Here, we report the production of an extensive extracellular network of filamentous, arsenic-sulfide (As-S) nanotubes (20100 nm in diameter by 30 m in length) by the dissimilatory metal-reducing bacterium Shewanella sp. HN-41. The As-S nanotubes, formed via the reduction of As(V) and S2O, were initially amorphous As2S3 but evolved with increasing incubation time toward polycrystalline phases of the chalcogenide minerals realgar (AsS) and duranusite (As4S). Upon maturation, the As-S nanotubes behaved as metals and semiconductors in terms of their electrical and photoconductive properties, respectively. The As-S nanotubes produced by Shewanella may provide useful materials for novel nano- and opto-electronic devices.

Lee, Ji-Hoon; Kim, Min-Gyu; Yoo, Bongyoung; Myung, Nosang V.; Maeng, Jongsun; Lee, Takhe; Dohnalkova, Alice; Fredrickson, Jim K.; Sadowsky, Michael J.; Hur, Hor-Gil

2007-12-18T23:59:59.000Z

107

Cold Weather Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

0 0 Cold Weather Hazards June 2010 NSA_cwh_Rev10.doc 1 Atmospheric Radiation Measurement Climate Research Facility/ North Slope of Alaska/Adjacent Arctic Ocean (ACRF/NSA/AAO) Cold Weather Hazards Winter Conditions at the North Slope of Alaska The North Slope of Alaska is north of the Arctic Circle at latitudes ranging from 69 to 72 degrees. Barrow, the largest town on the North Slope (pop. 4500), is the site of a National Weather Service Station, which has been active for several decades, so the climatology of the Alaska arctic coastal region as represented by Barrow is relatively well known. The North Slope is covered with ice and snow typically eight months of the year (October-May). During part of November, all of December, and most of January, the sun does not come above the horizon; this

108

Safety Hazards of Batteries  

NLE Websites -- All DOE Office Websites (Extended Search)

Safety Hazards of Batteries Safety Hazards of Batteries Battery technology is at the heart of much of our technological revolution. One of the most prevalent rechargeable batteries in use today is the Lithium-ion battery. Cell phones, laptop computers, GPS systems, iPods, and even cars are now using lithium- ion rechargeable battery technology. In fact, you probably have a lithium-ion battery in your pocket or purse right now! Although lithium-ion batteries are very common there are some inherent dangers when using ANY battery. Lithium cells are like any other technology - if they are abused and not used for their intended purpose catastrophic results may occur, such as: first-, second-, and third-degree burns, respiratory problems, fires, explosions, and even death. Please handle the lithium-ion batteries with care and respect.

109

Oil and Hazardous Substance Discharge Preparedness (Minnesota...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Substance Discharge Preparedness (Minnesota) Oil and Hazardous Substance Discharge Preparedness (Minnesota) Eligibility Utility Fed. Government Commercial Agricultural...

110

National Earthquake Hazards Reduction Program Staff ...  

Science Conference Proceedings (OSTI)

National Earthquake Hazards Reduction Program Staff. National Earthquake Hazards Reduction Program (731.05). Dr. John (Jack) R. Hayes, Jr. ...

2013-08-12T23:59:59.000Z

111

Systematic Engineering of Phytochelatin Synthesis and Arsenic Transport for Enhanced Arsenic  

E-Print Network (OSTI)

to achieve an arsenic accumulation level of 16.8 mmol/g DCW, a 80-fold improvement when compared to a controlMT) and an As transporter GlpF. The whole cell As level of 8.1 mmol/g dry cell weight (DCW) is three times higher than other/g DCW is 20% higher than our previous reported value of 8.1 mmol/ g DCW using cells expressing Glp

Chen, Wilfred

112

Various Arsenic Treatments in Non-Ferrous Metallurgy and Other ...  

Science Conference Proceedings (OSTI)

Presentation Title, Various Arsenic Treatments in Non-Ferrous Metallurgy and ... from the Coking Wastewater Using Three-Dimensional Electrode Reactor ... Phase Equilibrium and Characterization Studies of Binary Organic Thermal Energy...

113

XAFS Study of Arsenical Nickel Hydroxide , Z. Arthur2  

E-Print Network (OSTI)

and immobilization of arsenic in uranium mine tailings. Other common co-ions in the industrial solutions formed under the similar conditions of the uranium mine tailings neutralization process. The samples

114

Treatment of arsenic-contaminated water using akaganeite adsorption  

DOE Patents (OSTI)

The present invention comprises a method and composition using akaganeite, an iron oxide, as an ion adsorption medium for the removal of arsenic from water and affixing it onto carrier media so that it can be used in filtration systems.

Cadena C., Fernando (Las Cruces, NM); Johnson, Michael D. (Las Cruces, NM)

2008-01-01T23:59:59.000Z

115

Residential exposure to drinking water arsenic in Inner Mongolia, China  

SciTech Connect

In the Ba Men region of Inner Mongolia, China, a high prevalence of chronic arsenism has been reported in earlier studies. A survey of the arsenic contamination among wells from groundwater was conducted to better understand the occurrence of arsenic (As) in drinking water. A total of 14,866 wells (30% of all wells in the region) were analyzed for their arsenic-content. Methods used to detect arsenic were Spectrophotometric methods with DCC-Ag (detection limit, 0.5 {mu}g of As/L); Spot method (detection limit, 10 {mu}g of As/L); and air assisted Colorimetry method (detection limit, 20 {mu}g of As/L). Arsenic-concentrations ranged from below limit of detection to 1200 {mu}g of As/L. Elevated concentrations were related to well depth (10 to 29 m), the date the well was built (peaks from 1980-1990), and geographic location (near mountain range). Over 25,900 individuals utilized wells with drinking water arsenic concentrations above 20 {mu}g of As/L (14,500 above 50 {mu}g of As/L-the current China national standard in drinking water and 2198 above 300 {mu}g of As/L). The presented database of arsenic in wells of the Ba Men region provides a useful tool for planning future water explorations when combined with geological information as well as support for designing upcoming epidemiological studies on the effects of arsenic in drinking water for this region.

Ning Zhixiong [Ba Men Anti-Epidemic Station, Lin He, Inner Mongolia (China); Lobdell, Danelle T. [Epidemiology and Biomarkers Branch, Human Studies Division, National Health and Environmental Effects Research Laboratory, U.S. EPA, Chapel Hill (United States); Kwok, Richard K. [RTI International, P.O. Box 12194, 3040 Cornwallis Rd, Research Triangle Park, NC 27709-2194 (United States)], E-mail: rkwok@rti.org; Liu Zhiyi; Zhang Shiying; Ma Chenglong [Ba Men Anti-Epidemic Station, Lin He, Inner Mongolia (China); Riediker, Michael [Institut Universitaire Romand de Sante au Travail, Lausanne (Switzerland); Mumford, Judy L. [Epidemiology and Biomarkers Branch, Human Studies Division, National Health and Environmental Effects Research Laboratory, U.S. EPA, Chapel Hill (United States)

2007-08-01T23:59:59.000Z

116

Identification of Arsenic Species in Coal Ash Particles  

Science Conference Proceedings (OSTI)

Identification of the chemical species and compounds of arsenic in individual coal fly ash particles will help provide a scientifically sound basis for assessing health risks from inhalation of these particles. This report presents the results of an analytical chemistry study of coal-combustion ash, with some work also completed on oil-combustion ash and copper smelter dust collected from several sources in the United States and Europe. Results showed that most arsenic is present on the surface of coal a...

1998-08-13T23:59:59.000Z

117

Arsenic and Selenium Treatment Technology Summary for Power Plant Wastewaters  

Science Conference Proceedings (OSTI)

This report summarizes the most suitable technologies available for the removal of arsenic and selenium from power plant wastewaters. The information stems from literature searches and the authors' experience in wastewater treatment systems from generally non-power plant sources since there are limited operating experiences for power plant applications. The report lists existing and potential technologies that meet the treatment goals of reducing arsenic and selenium to the levels set for U.S. En...

2004-11-03T23:59:59.000Z

118

Comparison of spatial interpolation methods for estimating heavy metals in sediments of Caspian Sea  

Science Conference Proceedings (OSTI)

This study aims to estimate the spatial distribution patterns of six heavy metals: Arsenic (As), Cadmium (Cd), Copper (Cu), Mercury (Hg), Plumbum (Pb), Zinc (Zn) in the sediments of Caspian Sea. Ordinary kriging (OK), genetic algorithm based on artificial ... Keywords: Artificial neural network, Caspian Sea, Fuzzy inference system, Genetic algorithm, Heavy metals, Ordinary kriging, Spatial patterns

S. M. Kazemi; S. M. Hosseini

2011-03-01T23:59:59.000Z

119

Organic and Inorganic Hazardous Waste Stabilization Using Coal Combustion By-Product Materials  

Science Conference Proceedings (OSTI)

This report describes a laboratory investigation of four clean-coal by-products to stabilize organic and inorganic constituents of hazardous waste stream materials. The wastes included API separator sludge, metal oxide-hydroxide waste, metal plating sludge, and creosote-contaminated soil. Overall, the investigation showed that the high alkalinity of the by-products may cost-effectively stabilize the acidic components of hazardous waste.

1994-10-08T23:59:59.000Z

120

Hazards assessment for the Hazardous Waste Storage Facility  

SciTech Connect

This report documents the hazards assessment for the Hazardous Waste Storage Facility (HWSF) located at the Idaho National Engineering Laboratory. The hazards assessment was performed to ensure that this facility complies with DOE and company requirements pertaining to emergency planning and preparedness for operational emergencies. The hazards assessment identifies and analyzes hazards that are significant enough to warrant consideration in a facility`s operational emergency management program. The area surrounding HWSF, the buildings and structures at HWSF, and the processes used at HWSF are described in this report. All nonradiological hazardous materials at the HWSF were identified (radiological hazardous materials are not stored at HWSF) and screened against threshold quantities according to DOE Order 5500.3A guidance. Two of the identified hazardous materials exceeded their specified threshold quantity. This report discusses the potential release scenarios and consequences associated with an accidental release for each of the two identified hazardous materials, lead and mercury. Emergency considerations, such as emergency planning zones, emergency classes, protective actions, and emergency action levels, are also discussed based on the analysis of potential consequences. Evaluation of the potential consequences indicated that the highest emergency class for operational emergencies at the HWSF would be a Site Area Emergency.

Knudsen, J.K.; Calley, M.B.

1994-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Experiment Hazard Class 11 - Hydrogen  

NLE Websites -- All DOE Office Websites (Extended Search)

1 - Hydrogen 1 - Hydrogen Applicability This hazard classification applies to all experiments and processes involving the use of gaseous hydrogen. This class includes work performed in the Experiment Hall Beamline Stations and any preparatory/setup/testing work performed in the LOM laboratories. Other hazard controls such as fire protection and life safety regulations may apply to experiments of this hazard class. A summary of controls for hydrogen use is available in the hydrogen summary document. Experiment Category Experiments involving previously reviewed hazard controls qualify for categorized as medium risk. Experiments involving new equipment or modified hazard control schemes are categorized as high risk. Experiment Hazard Control Verification Statements Engineered Controls - Applicable controls for storage and use of

122

Communication in hazardous environments  

SciTech Connect

Radios were investigated for use in hazardous environments where protective breathing equipment such as plastic suits and respirators interfere with communication. A radio system, manufactured by Communications-Applied technology (C-AT), was identified that was designed specifically for hazardous environment communications. This equipment had been used successfully by the US Army and NASA for several years. C-AT equipment was evaluated in plantwide applications at the Savannah River Plant (SRP) using temporary frequencies obtained by the Department of Energy-Savannah River (DOE-SR). Radios performed well in all applications, which included a tritium facility, high-level caves, a nuclear reactor building, tank farm, and a canyon building interior. Permanent frequencies were obtained by DOE-SR for two complete six-man C-AT systems at SRP. Because of the relatively short range of these systems, replicates will cover all applications of this type of equipment plantwide. Twelve radio systems are currently being used successfully in plantwide applications.

Rankin, W N; Herold, T R

1986-01-01T23:59:59.000Z

123

Hazardous Waste Act (New Mexico)  

Energy.gov (U.S. Department of Energy (DOE))

"Hazardous waste" means any solid waste or combination of solid wastes that because of their quantity, concentration or physical, chemical or infectious characteristics may: cause or significantly...

124

Biomethylation of inorganic arsenic by the rat and some laboratory animals  

SciTech Connect

This article concerns the distribution (in the liver, kidney and blood) and excretion (in the urine, feces and bile) of arsenic metabolites such as dimethylated, monomethylated and inorganic arsenic in rats following a single oral and intravenous (iv) administration of arsenic acid. This paper also describes studies on the species difference in the arsenic methylation between the rats and some other laboratory animals as mice, hamsters, rabbits and cats.

Odanaka, Y.; Matano, O.; Goto, S.

1980-03-01T23:59:59.000Z

125

Arsenic and antimony in laundry aids by instrumental neutron activation analysis  

SciTech Connect

>The measurement of trace amounts of arsenic and antimony in laundry aids by neutron activation analysis is described. The results for arsenic are compared with those obtained by other analytical techniques. The concentratlons ln the various laundry aids tested ranged from 5 to 51 ppM of arsenic and from 1 to 8 ppM of antimony. (auth)

Tanner, J.T.; Friedman, M.H.; Holloway, G.E.

1973-10-01T23:59:59.000Z

126

Ferrihydrite as an Enterosorbent for Arsenic  

E-Print Network (OSTI)

Arsenic in drinking water is a problem in many developing nations such as Taiwan and Bangladesh. Currently, no oral binding agent exists for the mitigation of arsenic toxicity. The goals of this research were to 1) screen a variety of sorbents for their ability to sorb As from water and screen for potential nutrient interactions with vitamin A (VA) and riboflavin (RF) isotherms; 2) further describe the sorption of As to ferrihydrite using isothermal analysis and a simulated gastrointestinal model (GI), and by testing ferrihydrites ability to protect Hydra from As toxicity; 3) verify ferrihydrites safety and efficacy in a short term rodent model. Ferrihydrite was found to be the most effective sorbent for both As(III) and As(V). Exchanging SWy-2 with sulfur containing organic groups increased the sorption of both As(V) and As(III) compared to the parent clay, though the total As sorbed was much less than As sorption by ferrihydrite. Ferrihydrite and an industrially produced ferrihydrite (IPF) both sorbed As(V) and As(III) with high capacity. Both ferrihydrites also sorbed As(V) and As(III) at high capacity in the simulated GI model. Fe measured in the simulated GI tract was below tolerable daily limits for both ferrihydrite and IPF. Ferrihydrite at 0.25 percent w/w was found to protect Hydra up to 200 times the minimal effective concentration (MEC) for As(III) and over 2.5 times the MEC for As(V), while IPF at 0.25 percent w/w protected Hydra up to 200 times the MEC for As(III) and just over 2 times the MEC for As(V). IPF was apparently safe and well tolerated by the rats in our study over a period of 2 weeks. No statistically significant differences were seen in serum biochemistry, serum Fe, serum VA, or serum vitamin E between rats fed control diet versus those fed 0.5 percent w/w IPF. Ferrihydrite was found to reduce urinary As after a single gavage of 0.5 mL of 500 ppm As(III) or As(V). These results verify in vitro findings and suggest that ferrihydrite is apparently safe and effective as an enterosorbent for As.

Taylor, John Floyd

2010-12-01T23:59:59.000Z

127

Potential Health Hazards of Radiation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Potential Health Hazards of Radiation Potential Health Hazards of Radiation Potential Health Hazards of Radiation Potential Health Hazards of Radiation More Documents &...

128

Hazardous Waste Management Standards and Regulations (Kansas)  

Energy.gov (U.S. Department of Energy (DOE))

This act states the standards and regulations for the management of hazardous waste. No person shall construct, modify or operate a hazardous waste facility or otherwise dispose of hazardous waste...

129

NETL: Utilization Projects - Speciation and Attenuation of Arsenic and  

NLE Websites -- All DOE Office Websites (Extended Search)

Speciation and Attenuation of Arsenic and Selenium at Coal Combustion By-Product Management Facilities Speciation and Attenuation of Arsenic and Selenium at Coal Combustion By-Product Management Facilities The overall objective of this project is to evaluate the impact of key constituents captured from power plant air streams (arsenic, selenium and mercury) on the disposal and utilization of coal combustion by-products. Specific objectives of the project are: 1) to develop a comprehensive database of field leachate concentrations at a wide range of CCB management sites (about 25 sites), including speciation of arsenic and selenium, and low-detection limit analyses for mercury; and 2) to perform detailed evaluations of the release and attenuation of arsenic and selenium species at 3 CCB sites. The fundamental or mechanistic data to reliably model many of the inorganics in CCB leachate are lacking. There is a large degree of uncertainty in the initial leachate concentrations, long-term leaching characteristics of CCBs, and the attenuation coefficients typically used in groundwater transport models. As a result, the model simulations are either highly conservative, or they can be manipulated to obtain almost any desired result. This research project will develop a coherent field leachate database and soil attenuation coefficients for improved modeling and evaluation of the potential for groundwater impacts at CCB management facilities. The work is focused on speciation of four key constituents at CCB sites: arsenic, selenium, chromium, and mercury. The proposed work will help to narrow the uncertainties in the range of values of these critical inputs and improve the accuracy of the modeling results.

130

REGARDING RADIATION HAZARDS  

SciTech Connect

Within 24 to 36 hr after detonation on July 6 and 24 in the Nevada testing area of 2 thermonuclear bombs of the order of 10 kiloton magnitude, the I/ sup 131/ levels of milk from several Utah milk sheds repeatedly exceeded hazardous levels. These findings, reflected in daily I/sup 131/ counts, led the Director of Public Health in Utah to have milk diverted from fluid distribution to milk-products manufacture, thereby permitting time for these dairy foods to become safe for consumer use. In other cities sudden peak levels have also occurred. Thus, Troy, New York, in April, 1953, was exposed by a flash rainstorm, which occurred 18 hr after a Nevada test explosion, to radioactive fallout sufficient to produce levels in milk estimated at more than a 1000 times the safe limit by British or American standards, more than 4 times the British annual allowance in 1 quart of milk. It is suggested that public-health authorities, working in coliaboration with the nation's medical centers, should institute routine, daily I/sup 131/ thyroid-uptake counts on the infants in various parts of the country. (H.H.D.)

Boardman, D.W.

1962-09-13T23:59:59.000Z

131

Metal decontamination for waste minimization using liquid metal refining technology  

Science Conference Proceedings (OSTI)

The current Department of Energy Mixed Waste Treatment Project flowsheet indicates that no conventional technology, other than surface decontamination, exists for metal processing. Current Department of Energy guidelines require retrievable storage of all metallic wastes containing transuranic elements above a certain concentration. This project is in support of the National Mixed Low Level Waste Treatment Program. Because of the high cost of disposal, it is important to develop an effective decontamination and volume reduction method for low-level contaminated metals. It is important to be able to decontaminate complex shapes where surfaces are hidden or inaccessible to surface decontamination processes and destruction of organic contamination. These goals can be achieved by adapting commercial metal refining processes to handle radioactive and organic contaminated metal. The radioactive components are concentrated in the slag, which is subsequently vitrified; hazardous organics are destroyed by the intense heat of the bath. The metal, after having been melted and purified, could be recycled for use within the DOE complex. In this project, we evaluated current state-of-the-art technologies for metal refining, with special reference to the removal of radioactive contaminants and the destruction of hazardous organics. This evaluation was based on literature reports, industrial experience, plant visits, thermodynamic calculations, and engineering aspects of the various processes. The key issues addressed included radioactive partitioning between the metal and slag phases, minimization of secondary wastes, operability of the process subject to widely varying feed chemistry, and the ability to seal the candidate process to prevent the release of hazardous species.

Joyce, E.L. Jr.; Lally, B. [Los Alamos National Lab., NM (United States); Ozturk, B.; Fruehan, R.J. [Carnegie-Mellon Univ., Pittsburgh, PA (United States). Dept. of Materials Science and Engineering

1993-09-01T23:59:59.000Z

132

Transporting & Shipping Hazardous Materials at LBNL: Waste -...  

NLE Websites -- All DOE Office Websites (Extended Search)

Waste: Hazardous, Biohazardous, Medical or Radioactive Do not transport or ship hazardous material wastes off-site. Only Waste Management, Radiation Protection or approved...

133

Arsenic and Selenium Speciation in Fly Ash and Wastewater  

Science Conference Proceedings (OSTI)

The objective of the work is to predict As and Se behavior in pond wastewater based on coal and power plant characteristics so that utilities will have tools for selection of coals (and blends) that will allow them to meet applicable water quality regulations in the ash pond discharge. Arsenic and selenium were chosen as the focus of this work because the behavior of arsenic and selenium is not well correlated with pH in ash pond water, but with speciation of these oxyanions in the fly ash. Furthermore, ...

2005-03-28T23:59:59.000Z

134

Effect of pressure on arsenic diffusion in germanium  

SciTech Connect

We report preliminary results of a study of the activation volume for diffusion of arsenic in germanium. High-temperature high-pressure anneals were performed in a liquid argon pressure medium in a diamond anvil cell capable of reaching 5 GPa and 750 C,l which is externally heated for uniform and repeatable temperature profiles. Broadening of an ion-implanted arsenic profile was measured by Secondary Ion Mass Spectrometry. Hydrostatic pressure retards the diffusivity at 575 C, characterized by an activation volume that is +15% of the atomic volume of Ge. Implications for diffusion mechanisms are discussed.

Mitha, S.; Theiss, S.D.; Aziz, M.J. [Harvard Univ., Cambridge, MA (United States); Schiferl, D. [Los Alamos National Lab., NM (United States); Poker, D.B. [Oak Ridge National Lab., TN (United States)

1994-01-01T23:59:59.000Z

135

ARM - SGP Rural Driving Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Rural Driving Hazards Rural Driving Hazards SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts SGP Rural Driving Hazards The rural location of the Southern Great Plains (SGP) site facilities requires that visitors travel on unpaved, dirt and gravel, roads. Visitors should be aware of the driving hazards this presents by taking the following precautions: Proceed cautiously: Many rural roads have unmarked and blind intersections. Slow down: Sanded and gravel raods can cause a vehicle to swerve. Maintain a safe following distance: During the dry season, vehicles

136

Surveillance Guides - Identification of Hazards  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Identification of Hazards Identification of Hazards 1.0 Objective The objective of this surveillance is to evaluate the effectiveness of the contractor's hazards identification programs. Surveillance activities encompass maintenance and implementation of safety basis documentation (SARs, ISBs, BIOs, JCOs, HASPs etc) as well as activity level hazards identification via JHAs, AJHAs, JSAs etc.) 2.0 References 2.1 DOE 4330.4B Maintenance Management Program 2.2 48 CFR 1970 Department of Energy Acquisition Regulations 2.3 DOE O 5480.21, Unreviewed Safety Questions 2.4 DOE O 5480.23, Nuclear Safety Analysis Reports 3.0 Requirements Implemented This surveillance verifies implementation of guiding principle #5 and core value #2 as specified in 48 CFR 1970.5204-2 (b) (5) and (c) (2) respectively. Additionally, it verifies implementation of

137

FIRE HAZARDS ANALYSIS - BUSTED BUTTE  

SciTech Connect

The purpose of this fire hazards analysis (FHA) is to assess the risk from fire within individual fire areas at the Busted Butte Test Facility and to ascertain whether the DOE fire safety objectives are met. The objective, identified in DOE Order 420.1, Section 4.2, is to establish requirements for a comprehensive fire and related hazards protection program for facilities sufficient to minimize the potential for: (1) The occurrence of a fire related event. (2) A fire that causes an unacceptable on-site or off-site release of hazardous or radiological material that will threaten the health and safety of employees. (3) Vital DOE programs suffering unacceptable interruptions as a result of fire and related hazards. (4) Property losses from a fire and related events exceeding limits established by DOE. Critical process controls and safety class systems being damaged as a result of a fire and related events.

R. Longwell; J. Keifer; S. Goodin

2001-01-22T23:59:59.000Z

138

Hazard-free connection release.  

E-Print Network (OSTI)

??Fault-tolerant communication in a distributed system requires reliable connection management and message delivery. Reliable connection management includes the guarantee of hazard-free release, in which no (more)

Walter, Jennifer E.

2012-01-01T23:59:59.000Z

139

Arsenic- and cadmium-induced toxicogenomic response in mouse embryos undergoing neurulation  

Science Conference Proceedings (OSTI)

Arsenic (As) and cadmium (Cd) are well-characterized teratogens in animal models inducing embryotoxicity and neural tube defects (NTDs) when exposed during neurulation. Toxicological research is needed to resolve the specific biological processes and associated molecular pathways underlying metal-induced toxicity during this timeframe in gestational development. In this study, we investigated the dose-dependent effects of As and Cd on gene expression in C57BL/6J mouse embryos exposed in utero during neurulation (GD8) to identify significantly altered genes and corresponding biological processes associated with embryotoxicity. We quantitatively examined the toxicogenomic dose-response relationship at the gene level. Our results suggest that As and Cd induce dose-dependent gene expression alterations representing shared (cell cycle, response to UV, glutathione metabolism, RNA processing) and unique (alcohol/sugar metabolism) biological processes, which serve as robust indicators of metal-induced developmental toxicity and indicate underlying embryotoxic effects. Our observations also correlate well with previously identified impacts of As and Cd on specific genes associated with metal-induced toxicity (Cdkn1a, Mt1). In summary, we have identified in a quantitative manner As and Cd induced dose-dependent effects on gene expression in mouse embryos during a peak window of sensitivity to embryotoxicity and NTDs in the sensitive C57BL/6J strain.

Robinson, Joshua F.; Yu, Xiaozhong [Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195 (United States); Institute for Risk Analysis and Risk Communication, Seattle, WA 98195 (United States); Moreira, Estefania G. [Institute for Risk Analysis and Risk Communication, Seattle, WA 98195 (United States); Department of Physiological Sciences, State University of Londrina, Londrina, PR (Brazil); Hong, Sungwoo [Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195 (United States); Institute for Risk Analysis and Risk Communication, Seattle, WA 98195 (United States); Faustman, Elaine M., E-mail: faustman@u.washington.edu [Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195 (United States); Institute for Risk Analysis and Risk Communication, Seattle, WA 98195 (United States); Center for Ecogenetics and Environmental Health, Seattle, WA 98195 (United States); Center on Human Development and Disability, Seattle, WA 98195 (United States); Center for Child Environmental Health Risks Research, Seattle, WA 98195 (United States)

2011-01-15T23:59:59.000Z

140

Preliminary hazards analysis -- vitrification process  

SciTech Connect

This paper presents a Preliminary Hazards Analysis (PHA) for mixed waste vitrification by joule heating. The purpose of performing a PHA is to establish an initial hazard categorization for a DOE nuclear facility and to identify those processes and structures which may have an impact on or be important to safety. The PHA is typically performed during and provides input to project conceptual design. The PHA is then followed by a Preliminary Safety Analysis Report (PSAR) performed during Title 1 and 2 design. The PSAR then leads to performance of the Final Safety Analysis Report performed during the facility`s construction and testing. It should be completed before routine operation of the facility commences. This PHA addresses the first four chapters of the safety analysis process, in accordance with the requirements of DOE Safety Guidelines in SG 830.110. The hazards associated with vitrification processes are evaluated using standard safety analysis methods which include: identification of credible potential hazardous energy sources; identification of preventative features of the facility or system; identification of mitigative features; and analyses of credible hazards. Maximal facility inventories of radioactive and hazardous materials are postulated to evaluate worst case accident consequences. These inventories were based on DOE-STD-1027-92 guidance and the surrogate waste streams defined by Mayberry, et al. Radiological assessments indicate that a facility, depending on the radioactive material inventory, may be an exempt, Category 3, or Category 2 facility. The calculated impacts would result in no significant impact to offsite personnel or the environment. Hazardous materials assessment indicates that a Mixed Waste Vitrification facility will be a Low Hazard facility having minimal impacts to offsite personnel and the environment.

Coordes, D.; Ruggieri, M.; Russell, J.; TenBrook, W.; Yimbo, P. [Science Applications International Corp., Pleasanton, CA (United States)] [Science Applications International Corp., Pleasanton, CA (United States)

1994-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

CHLORIDE, IN CALCIUM, IN pH ARSENIC, IN  

E-Print Network (OSTI)

LITER PHAST--A Program for Simulating Ground-Water Flow, Solute Transport, and Multicomponent;COVER ILLUSTRATION: Results of PHAST simulation of the evolution of water chemistry in the CentralH ARSENIC, IN MILLIGRAMS PER LITER MILLIGRAMS PER LITER MICROGRAMS PER LITER #12;PHAST--A Program

142

Comment on "Arsenic Mobility and Groundwater Extraction in  

E-Print Network (OSTI)

recharge. A re- cent report from the International Atomic Energy Agency (8) lists eight samples to unprecedented levels starting in the 1950s because of atmospheric testing of nuclear bombs (5). The penetration, this would mean bomb-produced 14 C should have penetrated at least to the depth of maximum arsenic

van Geen, Alexander

143

Limited Temporal Variability of Arsenic Concentrations in 20 Wells  

E-Print Network (OSTI)

Limited Temporal Variability of Arsenic Concentrations in 20 Wells Monitored for 3 Years switched their water consumption to wells that meet the local standard for As in drinking water of 50 µg if As concentrations in those wells could change over time. To address this issue, we report here precise groundwater

van Geen, Alexander

144

Arsenic pilot plant operation and results:Weatherford, Oklahoma.  

SciTech Connect

Narasimhan Consulting Services, Inc. (NCS), under a contract with the Sandia National Laboratories (SNL), designed and operated pilot scale evaluations of the adsorption and coagulation/filtration treatment technologies aimed at meeting the recently revised arsenic maximum contaminant level (MCL) for drinking water. The standard of 10 {micro}g/L (10 ppb) is effective as of January 2006. The pilot demonstration is a project of the Arsenic Water Technology Partnership program, a partnership between the American Water Works Association Research Foundation (AwwaRF), SNL and WERC (A Consortium for Environmental Education and Technology Development). The pilot evaluation was conducted at Well 30 of the City of Weatherford, OK, which supplies drinking water to a population of more than 10,400. Well water contained arsenic in the range of 16 to 29 ppb during the study. Four commercially available adsorption media were evaluated side by side for a period of three months. Both adsorption and coagulation/filtration effectively reduced arsenic from Well No.30. A preliminary economic analysis indicated that adsorption using an iron oxide media was more cost effective than the coagulation/ filtration technology.

Aragon, Malynda Jo; Arora, H. (Narasimhan Consulting Services Inc., Phoenix, Arizona); Karori, Saqib (Narasimhan Consulting Services Inc., Phoenix, Arizona); Pathan, Sakib (Narasimhan Consulting Services Inc., Phoenix, Arizona)

2007-05-01T23:59:59.000Z

145

Tuesday, November 6, 2007 Arsenic Status in Delaware Soils.  

E-Print Network (OSTI)

Tuesday, November 6, 2007 186-4 Arsenic Status in Delaware Soils. Jennifer Seiter, University of Delaware, 531 South College Ave, Rm 152, Department of Plant & Soil Sciences, Newark, DE 19717 & Soil Sciences, Newark, DE 19717-1303. The Delmarva Peninsula is one of the most concentrated poultry

Sparks, Donald L.

146

NEHRP - National Earthquake Hazards Reduction Program ...  

Science Conference Proceedings (OSTI)

... Failures I by John Egan National Earthquake Hazards Reduction Program. A research and implementation partnership. ...

2013-08-28T23:59:59.000Z

147

Hazardous Wastes Management (Alabama) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Wastes Management (Alabama) Hazardous Wastes Management (Alabama) Hazardous Wastes Management (Alabama) < Back Eligibility Commercial Construction Developer Industrial Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Alabama Program Type Environmental Regulations Safety and Operational Guidelines This legislation gives regulatory authority to the Department of Environmental Management to monitor commercial sites for hazardous wastes; fees on waste received at such sites; hearings and investigations. The legislation also states responsibilities of generators and transporters of hazardous waste as well as responsibilities of hazardous waste storage and treatment facility and hazardous waste disposal site operators. There

148

Arsenic pilot plant operation and results : Anthony, New Mexico.  

Science Conference Proceedings (OSTI)

Sandia National Laboratories (SNL) is conducting pilot scale evaluations of the performance and cost of innovative water treatment technologies aimed at meeting the recently revised arsenic maximum contaminant level (MCL) for drinking water. The standard of 10 {micro}g/L (10 ppb) is effective as of January 2006. The pilot tests have been conducted in New Mexico where over 90 sites that exceed the new MCL have been identified by the New Mexico Environment Department. The pilot test described in this report was conducted in Anthony, New Mexico between August 2005 and December 2006 at Desert Sands Mutual Domestic Water Consumers Association (MDWCA) (Desert Sands) Well No.3. The pilot demonstrations are a part of the Arsenic Water Technology Partnership program, a partnership between the American Water Works Association Research Foundation (AwwaRF), SNL and WERC (A Consortium for Environmental Education and Technology Development). The Sandia National Laboratories pilot demonstration at the Desert Sands site obtained arsenic removal performance data for fourteen different adsorptive media under intermittent flow conditions. Well water at Desert Sands has approximately 20 ppb arsenic in the unoxidized (arsenite-As(III)) redox state with moderately high total dissolved solids (TDS), mainly due to high sulfate, chloride, and varying concentrations of iron. The water is slightly alkaline with a pH near 8. The study provides estimates of the capacity (bed volumes until breakthrough at 10 ppb arsenic) of adsorptive media in the same chlorinated water. Adsorptive media were compared side-by-side in ambient pH water with intermittent flow operation. This pilot is broken down into four phases, which occurred sequentially, however the phases overlapped in most cases.

Aragon, Malynda Jo; Everett, Randy L.; Siegel, Malcolm Dean; Aragon, Alicia R.; Kottenstette, Richard Joseph; Holub, William E., Jr.; Wright, Jerome L.; Dwyer, Brian P.

2007-09-01T23:59:59.000Z

149

Metal resistance sequences and transgenic plants  

DOE Patents (OSTI)

The present invention provides nucleic acid sequences encoding a metal ion resistance protein, which are expressible in plant cells. The metal resistance protein provides for the enzymatic reduction of metal ions including but not limited to divalent Cu, divalent mercury, trivalent gold, divalent cadmium, lead ions and monovalent silver ions. Transgenic plants which express these coding sequences exhibit increased resistance to metal ions in the environment as compared with plants which have not been so genetically modified. Transgenic plants with improved resistance to organometals including alkylmercury compounds, among others, are provided by the further inclusion of plant-expressible organometal lyase coding sequences, as specifically exemplified by the plant-expressible merB coding sequence. Furthermore, these transgenic plants which have been genetically modified to express the metal resistance coding sequences of the present invention can participate in the bioremediation of metal contamination via the enzymatic reduction of metal ions. Transgenic plants resistant to organometals can further mediate remediation of organic metal compounds, for example, alkylmetal compounds including but not limited to methyl mercury, methyl lead compounds, methyl cadmium and methyl arsenic compounds, in the environment by causing the freeing of mercuric or other metal ions and the reduction of the ionic mercury or other metal ions to the less toxic elemental mercury or other metals.

Meagher, Richard Brian (Athens, GA); Summers, Anne O. (Athens, GA); Rugh, Clayton L. (Athens, GA)

1999-10-12T23:59:59.000Z

150

Treated bottom ash medium and method of arsenic removal from drinking water  

DOE Patents (OSTI)

A method for low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form of activated iron adsorbent with a high affinity for arsenic. In laboratory tests, a miniscule 5 grams of pre-treated bottom ash was sufficient to remove the arsenic from 2 liters of 2400 ppb (parts per billion) arsenic-laden water to a level below 50 ppb (the present United States Environmental Protection Agency limit). By increasing the amount of pre-treated bottom ash, even lower levels of post-treatment arsenic are expected. It is further expected that this invention supplies a very low-cost solution to arsenic poisoning for large population segments.

Gadgil, Ashok (El Cerrito, CA)

2009-06-09T23:59:59.000Z

151

Thoughts on Hazard Assessment (Oct)  

NLE Websites -- All DOE Office Websites (Extended Search)

Hazard Assessment of Chemical Air Hazard Assessment of Chemical Air Contaminants Measured in Residences J.M. Logue, T.E. McKone, M. H. Sherman, B.C. Singer Environmental Energy Technologies Division June 2010 Funding was provided by the U.S. Dept. of Energy Building Technologies Program, Office of Energy Efficiency and Renewable Energy under DOE Contract No. DE-AC02-05CH11231; by the U.S. Dept. of Housing and Urban Development Office of Healthy Homes and Lead Hazard Control through Interagency Agreement I-PHI-01070, and by the California Energy Commission through Contract 500-08-06. LBNL Report Number 3650-E 1 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States

152

www.elsevier.com/locate/envres Seasonal variation of arsenic concentration in wells in Nevada $  

E-Print Network (OSTI)

The issue of seasonal arsenic measurement variability poses consequences regarding the interpretation and frequency of well water measurements for both public health research and surveillance. In this study, we evaluated seasonal variability in arsenic concentration in 356 wells in western Nevada. River flow data obtained from US Geological Survey National Water Information System were used to classify seasons as wet or dry, and mean differences in arsenic well concentrations measured during these seasons were compared. Arsenic concentrations in these wells averaged 72:9 mg=L (range, non-detect to 3000 mg=L). The mean difference in arsenic concentrations between the wet and dry seasons was 3:3 mg=L (p 0:78; average percent difference 2.3%). Eighty wells (22%) had higher arsenic concentrations in the wet season, 75 wells (21%) had higher arsenic concentrations in the dry season and no difference was seen in 201 wells (56%). The mean differences in wells with arsenic levels of 010, 1150, 51200, 4200 mg=L were 1:4 mg=L p 0:43, 9:2mg=L p 0:36, 15:1mg=Lp 0:30, and 49:9 mg=L p 0:59. In summary, although changes in arsenic concentrations were seen in some wells, clear trends in arsenic concentration over time were not associated with the wet and dry seasons. These findings provide evidence that, in our study area as a whole, little seasonal variability occurs in arsenic concentrations, and repeated assessments of arsenic

Josef G. Thundiyil A; Yan Yuan B; Allan H. Smith B; Craig Steinmaus B

2007-01-01T23:59:59.000Z

153

A Fern Fatale - X-ray Absorption Spectroscopy Imaging an Arsenic-Loving  

NLE Websites -- All DOE Office Websites (Extended Search)

Fern Fatale - X-ray Absorption Spectroscopy Imaging of an Arsenic-Loving Fern Fatale - X-ray Absorption Spectroscopy Imaging of an Arsenic-Loving Fern For many people, arsenic is synonymous with poison, so it is perhaps a surprise that some plants, such as the fern Pteris vittata (Figure 1) seem to quite deliberately accumulate large amounts of it. What is more, the plant converts it to the most toxic inorganic form known. How does it do this? First some background; while there is some evidence that arsenic is required for health [1], this is debatable. On the other hand, the poisonous nature of arsenic compounds was understood by the ancient Greeks and Romans, and it has been used throughout history as a homicidal and suicidal agent. It is found in two environmentally common oxy acids; arsenous acid (H3AsO3), and arsenic acid (H3AsO4), whose salts are known as arsenites and arsenates, respectively. Of these, the trivalent arsenic species are the most toxic. The infamous agent of murder is arsenic trioxide (white arsenic or As2O3), which is simply the (reputedly tasteless) anhydride of arsenous acid.

154

Artificial Cellulosomes and Arsenic Cleanup: From Single Cell Programming to Synthetic Yeast Consortium  

E-Print Network (OSTI)

biosynthesis for improved biofuel production. In Vitro Cellbioremediation and biofuel production. In regards to theseengineering for biofuel production and arsenic remediation.

Tsai, Shen-Long

2011-01-01T23:59:59.000Z

155

Process for electrolytically preparing uranium metal  

DOE Patents (OSTI)

A process for making uranium metal from uranium oxide by first fluorinating uranium oxide to form uranium tetrafluoride and next electrolytically reducing the uranium tetrafluoride with a carbon anode to form uranium metal and CF.sub.4. The CF.sub.4 is reused in the fluorination reaction rather than being disposed of as a hazardous waste.

Haas, Paul A. (Knoxville, TN)

1989-01-01T23:59:59.000Z

156

Metal Aminoboranes  

Metal aminoboranes of the formula M(NH.sub.2BH.sub.3).sub.n have been synthesized. Metal aminoboranes are hydrogen storage materials. Metal aminoboranes are also precursors for synthesizing other metal aminoboranes. Metal aminoboranes can be ...

157

Laboratory Waste Disposal HAZARDOUS GLASS  

E-Print Network (OSTI)

Laboratory Waste Disposal HAZARDOUS GLASS Items that could cut or puncture skin or trash- can liners. This waste stream must be boxed to protect custodial staff. It goes directly to the landfill lined cardboard box. Tape seams with heavy duty tape to contain waste. Limit weight to 20 lbs. Or

Sheridan, Jennifer

158

Questions and Answers - Are nitrogen, arsenic, and tantalum radioactive?  

NLE Websites -- All DOE Office Websites (Extended Search)

How many neutrons can you add to anatom without it getting unbalanced? How many neutrons can you add to an<br>atom without it getting unbalanced? Previous Question (How many neutrons can you add to an atom without it getting unbalanced?) Questions and Answers Main Index Next Question (How long is the life span of an atom?) How long is the life span of an atom? Are nitrogen, arsenic, and tantalum radioactive? The answer is yes and no. Let's see why. When you want to know about elements, you go look in the periodic table. But what you see listed in the periodic table of the elements is only part of the picture. For every element listed, there are different "flavors" called isotopes. All of the elements have at least one isotope that is radioactive. So, we can say that there is such a thing as radioactive nitrogen, arsenic and tantalum. Some

159

Strategies for the Engineered Phytoremediation of Mercury and Arsenic Pollution  

Science Conference Proceedings (OSTI)

Phytoremediation is the use of plants to extract, transport, detoxify and/or sequester pollutants of the land, water or air. Mercury and arsenic are among the worst environmental pollutants, adversely affecting the health of hundreds of millions of people worldwide. We have demonstrated that plants can be engineered to take up and tolerate several times the levels of mercury and arsenic that would kill most plant species. Starting with methylmercury and/or ionic mercury contamination, mercury is detoxified, stored below or above ground, and even volatilized as part of the transpiration process and keeping it out of the food chain. Initial efforts with arsenate demonstrate that it can be taken up, transported aboveground, electrochemically reduced to arsenite in leaves and sequestered in thiol-rich peptide complexes. The transgenic mercury remediation strategies also worked in cultivated and wild plant species like canola, rice and cottonwood.

Dhankher, Om Parkash; Meagher, Richard B.

2003-03-26T23:59:59.000Z

160

Criteria and Processes for the Certification of Non-Radioactive Hazardous and Non-Hazardous Wastes  

SciTech Connect

This document details Lawrence Livermore National Laboratory's (LLNL) criteria and processes for determining if potentially volumetrically contaminated or potentially surface contaminated wastes are to be managed as material containing residual radioactivity or as non-radioactive. This document updates and replaces UCRL-AR-109662, Criteria and Procedures for the Certification of Nonradioactive Hazardous Waste (Reference 1), also known as 'The Moratorium', and follows the guidance found in the U.S. Department of Energy (DOE) document, Performance Objective for Certification of Non-Radioactive Hazardous Waste (Reference 2). The 1992 Moratorium document (UCRL-AR-109662) is three volumes and 703 pages. The first volume provides an overview of the certification process and lists the key radioanalytical methods and their associated Limits of Sensitivities. Volumes Two and Three contain supporting documents and include over 30 operating procedures, QA plans, training documents and organizational charts that describe the hazardous and radioactive waste management system in place in 1992. This current document is intended to update the previous Moratorium documents and to serve as the top-tier LLNL institutional Moratorium document. The 1992 Moratorium document was restricted to certification of Resource Conservation and Recovery Act (RCRA), State and Toxic Substances Control Act (TSCA) hazardous waste from Radioactive Material Management Areas (RMMA). This still remains the primary focus of the Moratorium; however, this document increases the scope to allow use of this methodology to certify other LLNL wastes and materials destined for off-site disposal, transfer, and re-use including non-hazardous wastes and wastes generated outside of RMMAs with the potential for DOE added radioactivity. The LLNL organization that authorizes off-site transfer/disposal of a material or waste stream is responsible for implementing the requirements of this document. The LLNL Radioactive and Hazardous Waste Management (RHWM) organization is responsible for the review and maintenance of this document. It should be noted that the DOE metal recycling moratorium is still in effect and is implemented as outlined in reference 17 when metals are being dispositioned for disposal/re-use/recycling off-site. This document follows the same methodology as described in the previously approved 1992 Moratorium document. Generator knowledge and certification are the primary means of characterization. Sampling and analysis are used when there is insufficient knowledge of a waste to determine if it contains added radioactivity. Table 1 (page 12) presents a list of LLNL's analytical methods for evaluating volumetrically contaminated waste and updates the reasonably achievable analytical-method-specific Minimum Detectable Concentrations (MDCs) for various matrices. Results from sampling and analysis are compared against the maximum MDCs for the given analytical method and the sample specific MDC to determine if the sample contains DOE added volumetric radioactivity. The evaluation of an item that has a physical form, and history of use, such that accessible surfaces may be potentially contaminated, is based on DOE Order 5400.5 (Reference 3), and its associated implementation guidance document DOE G 441.1-XX, Control and Release of Property with Residual Radioactive Material (Reference 4). The guidance document was made available for use via DOE Memorandum (Reference 5). Waste and materials containing residual radioactivity transferred off-site must meet the receiving facilities Waste Acceptance Criteria (if applicable) and be in compliance with other applicable federal or state requirements.

Dominick, J

2008-12-18T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Arsenic Cancer Risk Assessment: Recent Advances & Next Steps  

Science Conference Proceedings (OSTI)

In recent years, there has been an on-going debate on the appropriate regulatory approach for evaluating the carcinogenicity of inorganic arsenic compounds, specifically in the best methods and data sources for establishing a cancer potency, or cancer slope factor (CSF). The CSF is applied to the development of environmental standards, regulation and risk assessments under a variety of federal and state programs. Currently, the U.S. Environmental Protection Agency (EPA) continues to rely on chemical non-...

2011-12-30T23:59:59.000Z

162

Potential Operational Risk Due to Changes in Arsenic Regulatory Values  

Science Conference Proceedings (OSTI)

Inorganic arsenic (iAs) is an environmentally ubiquitous toxic metalloid associated with an increased risk of both cancer and non-cancer effects in exposed individuals. However, disagreement exists on what level exists, if any, that will not result in adverse health outcomes. As such, federal and state agencies rely on the development of scientific estimates of the exposure-to-response relationship to characterize and manage risk across an array of regulatory programs. In the United States, the ...

2012-12-31T23:59:59.000Z

163

Weather and the Transport of Hazardous Materials | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Weather and the Transport of Hazardous Materials Weather and the Transport of Hazardous Materials Weather and the Transport of Hazardous Materials More Documents & Publications...

164

Experiment Hazard Class 4.4 -Class 4 Lasers  

NLE Websites -- All DOE Office Websites (Extended Search)

Use of Class 4 Lasers Applicability This hazard classification applies to all experiments involving class 4 lasers. Other hazard classifications and their associated hazard...

165

Design of a rural water provision system to decrease arsenic exposure in Bangladesh  

Science Conference Proceedings (OSTI)

Researchers at the Lawrence Berkeley National Laboratory have invented ARUBA (Arsenic Removal Using Bottom Ash) a material that effectively and affordably removes high concentrations of arsenic from contaminated groundwater. The technology is cost-effective because the substrate?bottom ash from coal fired power plants?is a waste material readily available in South Asia. During fieldwork in four sub-districts ofBangladesh, ARUBA reduced groundwater arsenic concentrations as high as 680 ppb to below the Bangladesh standard of 50 ppb. Key results from three trips in Bangladesh and one trip to Cambodia include (1) ARUBA removes more than half of the arsenic from contaminated water within the first five minutes of contact, andcontinues removing arsenic for 2-3 days; (2) ARUBA?s arsenic removal efficiency can be improved through fractionated dosing (adding a given amount of ARUBA in fractions versus all at once); (3) allowing water to first stand for two to three days followed by treatment with ARUBA produced final arsenic concentrations ten times lower than treating water directly out of the well; and (4) the amount of arsenic removed per gram of ARUBA is linearly related to the initial arsenic concentrationof the water. Through analysis of existing studies, observations, and informal interviews in Bangladesh, eight design strategies have been developed and used in the design of a low-cost, community-scale water treatment system that uses ARUBA to remove arsenic from drinking water. We have constructed, tested, and analyzed a scale version of the system. Experiments have shown that the system is capable of reducing high levels of arsenic (nearly 600 ppb) to below 50 ppb, while remaining affordable to people living on less than $2 per day. The system could be sustainably implemented as a public-private partnership in rural Bangladesh.

Mathieu, Johanna

2009-01-07T23:59:59.000Z

166

Removing Arsenic from Contaminated Drinking Water in Rural Bangladesh: Recent Fieldwork Results and Policy Implications  

SciTech Connect

ARUBA (Arsenic Removal Using Bottom Ash) has proven effective at removing high concentrations of arsenic from drinking water in Bangladesh. During fieldwork in four sub-districts of the country, ARUBA reduced arsenic levels ranging from 200 to 900 ppb to below the Bangladesh standard of 50 ppb. The technology is cost-effective because the substrate--bottom ash from coal fired power plants--is a waste material readily available in South Asia. In comparison to similar technologies, ARUBA uses less media for arsenic removal due to its high surface area to volume ratio. Hence, less waste is produced. A number of experiments were conducted in Bangladesh to determine the effectiveness of various water treatment protocols. It was found that (1) ARUBA removes more than half of the arsenic from water within five minutes of treatment, (2) ARUBA, that has settled at the bottom of a treatment vessel, continues to remove arsenic for 2-3 days, (3) ARUBA's arsenic removal efficiency can be improved through sequential partial dosing (adding a given amount of ARUBA in fractions versus all at once), and (4) allowing water to first stand for two to three days followed by treatment with ARUBA produced final arsenic levels ten times lower than treating water directly out of the well. Our findings imply a number of tradeoffs between ARUBA's effective arsenic removal capacity, treatment system costs, and waste output. These tradeoffs, some a function of arsenic-related policies in Bangladesh (e.g., waste disposal regulations), must be considered when designing an arsenic removal system. We propose that the most attractive option is to use ARUBA in communityscale water treatment centers, installed as public-private partnerships, in Bangladeshi villages.

Mathieu, Johanna L.; Gadgil, Ashok J.; Kowolik, Kristin; Addy, Susan E.A.

2009-09-17T23:59:59.000Z

167

Sulfide-Driven Arsenic Mobilization from Arsenopyrite and Black Shale Pyrite  

Science Conference Proceedings (OSTI)

We examined the hypothesis that sulfide drives arsenic mobilization from pyritic black shale by a sulfide-arsenide exchange and oxidation reaction in which sulfide replaces arsenic in arsenopyrite forming pyrite, and arsenide (As-1) is concurrently oxidized to soluble arsenite (As+3). This hypothesis was tested in a series of sulfide-arsenide exchange experiments with arsenopyrite (FeAsS), homogenized black shale from the Newark Basin (Lockatong formation), and pyrite isolated from Newark Basin black shale incubated under oxic (21% O2), hypoxic (2% O2, 98% N2), and anoxic (5% H2, 95% N2) conditions. The oxidation state of arsenic in Newark Basin black shale pyrite was determined using X-ray absorption-near edge structure spectroscopy (XANES). Incubation results show that sulfide (1 mM initial concentration) increases arsenic mobilization to the dissolved phase from all three solids under oxic and hypoxic, but not anoxic conditions. Indeed under oxic and hypoxic conditions, the presence of sulfide resulted in the mobilization in 48 h of 13-16 times more arsenic from arsenopyrite and 6-11 times more arsenic from isolated black shale pyrite than in sulfide-free controls. XANES results show that arsenic in Newark Basin black shale pyrite has the same oxidation state as that in FeAsS (-1) and thus extend the sulfide-arsenide exchange mechanism of arsenic mobilization to sedimentary rock, black shale pyrite. Biologically active incubations of whole black shale and its resident microorganisms under sulfate reducing conditions resulted in sevenfold higher mobilization of soluble arsenic than sterile controls. Taken together, our results indicate that sulfide-driven arsenic mobilization would be most important under conditions of redox disequilibrium, such as when sulfate-reducing bacteria release sulfide into oxic groundwater, and that microbial sulfide production is expected to enhance arsenic mobilization in sedimentary rock aquifers with major pyrite-bearing, black shale formations.

Zhu, W.; Young, L; Yee, N; Serfes, M; Rhine, E; Reinfelder, J

2008-01-01T23:59:59.000Z

168

Massachusetts Hazardous Waste Management Act (Massachusetts)  

Energy.gov (U.S. Department of Energy (DOE))

This Act contains regulations for safe disposal of hazardous waste, and establishes that a valid license is required to collect, transport, store, treat, use, or dispose of hazardous waste. Short...

169

Modeling and Hazard Analysis Using Stpa  

E-Print Network (OSTI)

A joint research project between MIT and JAXA/JAMSS is investigating the application of a new hazard analysis to the system and software in the HTV. Traditional hazard analysis focuses on component failures but software ...

Ishimatsu, Takuto

170

Program: Structural Performance Under Multi-Hazards  

Science Conference Proceedings (OSTI)

... derive lessons learned from disasters and failures ... hazard failure analysis, and disaster and failure ... heat transfer, and nonlinear structural response. ...

2013-01-03T23:59:59.000Z

171

Department of Transportation Pipeline and Hazardous Materials...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Administration Other Agencies You are here Home Department of Transportation Pipeline and Hazardous Materials Safety Administration Activities Department of Transportation...

172

NEHRP - Hazard Vulnerability and Disaster Resiliency ...  

Science Conference Proceedings (OSTI)

... Hazard Vulnerability and Disaster Resiliency. 2013. ... gaps for achieving resilience in the ... protection, emergency response, business continuity, and ...

173

NEHRP - Earthquake Risk and Hazard Research ...  

Science Conference Proceedings (OSTI)

Grants&Contracts. Earthquake Risk and Hazard Research, Implementation, and Outreach Roadmap. Award. Contract SB134106Z0011 ...

174

Earthquake Hazards Reduction Information at NIST  

Science Conference Proceedings (OSTI)

... 2013). Earthquakes (08/15/2011). Fifteen Named to Earthquake Hazards Reduction Advisory Committee (10/05/2010). Final ...

2010-09-23T23:59:59.000Z

175

Investigating the Use of Biosorbents to Remove Arsenic from Water  

E-Print Network (OSTI)

Evaluating the ability of biosorbents to remove arsenic from water has global significance due to the widespread availability and low cost of biosorbent materials. In this study, the ability of coffee grounds and coconut substrate (two previously unreported biosorbents) to remove arsenic from water was compared against the performance of arsenic removal on rice husk (a recognized and widely tested biosorbent). The three biosorbents were individually screened for their ability to remove arsenite, As (III), and arsenate, As (V), from water. Batch reactors were employed to assess the percent removal, reaction kinetics, adsorption capacity, and desorption of each arsenic species onto/from biosorbents under pH buffered and non?buffered conditions. The resulting experimental data was statistically interpreted using analysis of variance and ttesting of the means. The experimental results were also fit to existing kinetic and isotherm models to provide kinetic rate constants, the maximum adsorption capacity, and to help interpret the nature of the reactions on the biosorbent surface. While all three biosorbents removed arsenic with similar initial reaction kinetics (pseudo 1st order reaction rate constant for As (III) was 0.13 hr^?1 for all three biosorbents and for As (V) was 0.17 hr^?1 for coffee grounds and rice husk and 0.15 hr^?1 for coconut substrate), the amount of arsenite and arsenate removed was highest for coffee grounds (84 and 91 percent, respectively), followed by rice husk (68 and 72 percent, respectively), and then coconut substrate (26 and 24 percent, respectively). The maximum adsorption capacity of arsenite and arsenate was determined for coffee grounds (0.66 and 0.70 mg/g, respectively) and rice husk (0.55 and 0.66 mg/g, respectively). While desorption was observed for both coffee grounds and rice husk, the total amount of desorption accounted for less than 15 percent of the total retained mass. The results of this thesis work reveal that coffee can be used as an effective biosorbent when compared to rice husk; however, coconut substrate is less effective than rice husk at removing As (III) and As (V).

Erapalli, Shreyas

2010-12-01T23:59:59.000Z

176

Household Hazardous Waste Household hazardous waste is the discarded, unused, or leftover portion of household products  

E-Print Network (OSTI)

Household Hazardous Waste Household hazardous waste is the discarded, unused, or leftover portion of household products containing toxic chemicals. These wastes CANNOT be disposed of in regular garbage. Any should be considered hazardous. You cannot treat hazardous wastes like other kinds of garbage

de Lijser, Peter

177

ElectroChemical Arsenic Removal (ECAR) for Rural Bangladesh-Merging  

NLE Websites -- All DOE Office Websites (Extended Search)

ElectroChemical Arsenic Removal (ECAR) for Rural Bangladesh-Merging ElectroChemical Arsenic Removal (ECAR) for Rural Bangladesh-Merging Technology with Sustainable Implementation Title ElectroChemical Arsenic Removal (ECAR) for Rural Bangladesh-Merging Technology with Sustainable Implementation Publication Type Report Year of Publication 2009 Authors Addy, Susan E., Ashok J. Gadgil, Kristin Kowolik, and Robert Kostecki Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract Today, 35-77 million Bangladeshis drink arsenic-contaminated groundwater from shallow tube wells. Arsenic remediation efforts have focused on the development and dissemination of household filters that frequently fall into disuse due to the amount of attention and maintenance that they require. A community scale clean water center has many advantages over household filters and allows for both chemical and electricity-based technologies to be beneficial to rural areas. Full cost recovery would enable the treatment center to be sustainable over time. ElectroChemical Arsenic Remediation (ECAR) is compatible with community scale water treatment for rural Bangladesh. We demonstrate the ability of ECAR to reduce arsenic levels > 500 ppb to less than 10 ppb in synthetic and real Bangladesh groundwater samples and examine the influence of several operating parameters on arsenic removal effectiveness. Operating cost and waste estimates are provided. Policy implication recommendations that encourage sustainable community treatment centers are discussed.

178

Arsenic-induced alteration in the expression of genes related to type 2 diabetes mellitus  

Science Conference Proceedings (OSTI)

Chronic exposure to high concentrations of arsenic in drinking water is associated with an increased risk for developing type 2 diabetes. The present revision focuses on the effect of arsenic on tissues that participate directly in glucose homeostasis, integrating the most important published information about the impairment of the expression of genes related to type 2 diabetes by arsenic as one of the possible mechanisms by which it leads to the disease. Many factors are involved in the manner in which arsenic contributes to the occurrence of diabetes. The reviewed studies suggest that arsenic might increase the risk for type 2 diabetes via multiple mechanisms, affecting a cluster of regulated events, which in conjunction trigger the disease. Arsenic affects insulin sensitivity in peripheral tissue by modifying the expression of genes involved in insulin resistance and shifting away cells from differentiation to the proliferation pathway. In the liver arsenic disturbs glucose production, whereas in pancreatic beta-cells arsenic decreases insulin synthesis and secretion and reduces the expression of antioxidant enzymes. The consequences of these changes in gene expression include the reduction of insulin secretion, induction of oxidative stress in the pancreas, alteration of gluconeogenesis, abnormal proliferation and differentiation pattern of muscle and adipocytes as well as peripheral insulin resistance.

Diaz-Villasenor, Andrea [Department of Genomic Medicine and Environmental Toxicology, Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico, Circuito Escolar, Cd. Universitaria, Coyoacan 04510 Mexico, DF (Mexico)], E-mail: andreadv@biomedicas.unam.mx; Burns, Anna L. [Department of Genomic Medicine and Environmental Toxicology, Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico, Circuito Escolar, Cd. Universitaria, Coyoacan 04510 Mexico, DF (Mexico); Facultad de Medicina, Universidad Nacional Autonoma de Mexico (Mexico); Hiriart, Marcia [Department of Biophysics, Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico (Mexico); Cebrian, Mariano E. [Seccion Externa de Toxicologia, CINVESTAV, IPN (Mexico); Ostrosky-Wegman, Patricia [Department of Genomic Medicine and Environmental Toxicology, Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico, Circuito Escolar, Cd. Universitaria, Coyoacan 04510 Mexico, DF (Mexico)

2007-12-01T23:59:59.000Z

179

Discovery of temporal variation of arsenic in a historical blackfoot disease territory by time series analysis  

Science Conference Proceedings (OSTI)

Time series analysis is useful tool for extracting interesting pattern from ordered sequence of observations. The Chianan Blackfoot disease region was selected as study area, and the monitoring data of arsenic in groundwater during the period of 2003 ... Keywords: arsenic, data mining, groundwater management, time series analysis, water quality

Jan-Yee Lee; Ting-Nien Wu

2009-08-01T23:59:59.000Z

180

Discovery of Temporal Variation of Arsenic in a Historical Blackfoot Disease Territory by Time Series Analysis  

Science Conference Proceedings (OSTI)

Time series analysis is useful tool for extracting interesting pattern from ordered sequence of observations. The Chianan Blackfoot disease region was selected as study area, and the monitoring data of arsenic in groundwater during the period of 2003 ... Keywords: groundwater management, data mining, time series analysis, arsenic, water quality

Jan-Yee Lee; Ting-Nien Wu

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Models of volcanic eruption hazards  

SciTech Connect

Volcanic eruptions pose an ever present but poorly constrained hazard to life and property for geothermal installations in volcanic areas. Because eruptions occur sporadically and may limit field access, quantitative and systematic field studies of eruptions are difficult to complete. Circumventing this difficulty, laboratory models and numerical simulations are pivotal in building our understanding of eruptions. For example, the results of fuel-coolant interaction experiments show that magma-water interaction controls many eruption styles. Applying these results, increasing numbers of field studies now document and interpret the role of external water eruptions. Similarly, numerical simulations solve the fundamental physics of high-speed fluid flow and give quantitative predictions that elucidate the complexities of pyroclastic flows and surges. A primary goal of these models is to guide geologists in searching for critical field relationships and making their interpretations. Coupled with field work, modeling is beginning to allow more quantitative and predictive volcanic hazard assessments.

Wohletz, K.H.

1992-01-01T23:59:59.000Z

182

Models of volcanic eruption hazards  

SciTech Connect

Volcanic eruptions pose an ever present but poorly constrained hazard to life and property for geothermal installations in volcanic areas. Because eruptions occur sporadically and may limit field access, quantitative and systematic field studies of eruptions are difficult to complete. Circumventing this difficulty, laboratory models and numerical simulations are pivotal in building our understanding of eruptions. For example, the results of fuel-coolant interaction experiments show that magma-water interaction controls many eruption styles. Applying these results, increasing numbers of field studies now document and interpret the role of external water eruptions. Similarly, numerical simulations solve the fundamental physics of high-speed fluid flow and give quantitative predictions that elucidate the complexities of pyroclastic flows and surges. A primary goal of these models is to guide geologists in searching for critical field relationships and making their interpretations. Coupled with field work, modeling is beginning to allow more quantitative and predictive volcanic hazard assessments.

Wohletz, K.H.

1992-06-01T23:59:59.000Z

183

Arsenic microdistribution and speciation in toenail clippings of children living in a historic gold mining area  

SciTech Connect

Arsenic is naturally associated with gold mineralization and elevated in some soils and mine waste around historical gold mining activity in Victoria, Australia. To explore uptake, arsenic concentrations in children's toenail clippings and household soils were measured, and the microdistribution and speciation of arsenic in situ in toenail clipping thin sections investigated using synchrotron-based X-ray microprobe techniques. The ability to differentiate exogenous arsenic was explored by investigating surface contamination on cleaned clippings using depth profiling, and direct diffusion of arsenic into incubated clippings. Total arsenic concentrations ranged from 0.15 to 2.1 {micro}g/g (n = 29) in clipping samples and from 3.3 to 130 {micro}g/g (n = 22) in household soils, with significant correlation between transformed arsenic concentrations (Pearson's r = 0.42, P = 0.023) when household soil was treated as independent. In clipping thin sections (n = 2), X-ray fluorescence (XRF) mapping showed discrete layering of arsenic consistent with nail structure, and irregular arsenic incorporation along the nail growth axis. Arsenic concentrations were heterogeneous at 10 x 10 {micro}m microprobe spot locations investigated (< 0.1 to 13.3 {micro}g/g). X-ray absorption near-edge structure (XANES) spectra suggested the presence of two distinct arsenic species: a lower oxidation state species, possibly with mixed sulphur and methyl coordination (denoted As{sub (-S, -ch3)}{sup {approx}III}); and a higher oxidation state species (denoted As{sub (-O)}{sup {approx}V}). Depth profiling suggested that surface contamination was unlikely (n = 4), and XRF and XANES analyses of thin sections of clippings incubated in dry or wet mine waste, or untreated, suggested direct diffusion of arsenic occurred under moist conditions. These findings suggest that arsenic in soil contributes to some systemic absorption associated with periodic exposures among children resident in areas of historic gold mining activity in Victoria, Australia. Future studies are required to ascertain if adverse health effects are associated with current levels of arsenic uptake.

Pearce, Dora C.; Dowling, Kim; Gerson, Andrea R.; Sim, Malcolm R.; Sutton, Stephen R.; Newville, Matthew; Russell, Robert; McOrist, Gordon (U. South Australia); (Ballarat); (Monash); (UC); (ANSTO)

2010-05-04T23:59:59.000Z

184

Detection device for hazardous material  

DOE Patents (OSTI)

This invention is comprised of a detection device that is activated by the interaction of a hazardous chemical with a coating interactive with said chemical on an optical fiber thereby reducing the amount of light passing through the fiber to a light detector. A combination of optical filters separates the light into a signal beam and a reference beam which after detection, appropriate amplification, and comparison with preset internal signals, activates an alarm means if a predetermined level of contaminant is observed.

Partin, J.K.; Grey, A.E.

1990-12-31T23:59:59.000Z

185

ElectroChemical Arsenic Removal (ECAR) for Rural Bangladesh--Merging Technology with Sustainable Implementation  

SciTech Connect

Today, 35-77 million Bangladeshis drink arsenic-contaminated groundwater from shallow tube wells. Arsenic remediation efforts have focused on the development and dissemination of household filters that frequently fall into disuse due to the amount of attention and maintenance that they require. A community scale clean water center has many advantages over household filters and allows for both chemical and electricity-based technologies to be beneficial to rural areas. Full cost recovery would enable the treatment center to be sustainable over time. ElectroChemical Arsenic Remediation (ECAR) is compatible with community scale water treatment for rural Bangladesh. We demonstrate the ability of ECAR to reduce arsenic levels> 500 ppb to less than 10 ppb in synthetic and real Bangladesh groundwater samples and examine the influence of several operating parameters on arsenic removal effectiveness. Operating cost and waste estimates are provided. Policy implication recommendations that encourage sustainable community treatment centers are discussed.

Addy, Susan E.A.; Gadgil, Ashok J.; Kowolik, Kristin; Kostecki, Robert

2009-12-01T23:59:59.000Z

186

Recovery of precious metals from military electronic components  

SciTech Connect

Sandia National Laboratories developed a process to identify and remove the hazardous sub-components from dismantled weapons components utilizing real-time radiography and abrasive water-jet cutting. The components were then crushed, granulated, screened, and separated into an aluminium and a precious-and-base-metals fraction using air-tables. Plastics were further cleaned for disposal as non- hazardous waste.

Gundiler, I.H. [New Mexico Bureau of Mines and Mineral Resources, Socorro, NM (United States); Lutz, J.D.; Neiswander, P.G.

1996-09-01T23:59:59.000Z

187

Health burden of skin lesions at low arsenic exposure through groundwater in Pakistan. Is river the source?  

SciTech Connect

A significant proportion of groundwater in south Asia is contaminated with arsenic. Pakistan has low levels of arsenic in groundwater compared with China, Bangladesh and India. A representative multi-stage cluster survey conducted among 3874 persons {>=}15 years of age to determine the prevalence of arsenic skin lesions, its relation with arsenic levels and cumulative arsenic dose in drinking water in a rural district (population: 1.82 million) in Pakistan. Spot-urine arsenic levels were compared among individuals with and without arsenic skin lesions. In addition, the relation of age, body mass index, smoking status with arsenic skin lesions was determined. The geographical distribution of the skin lesions and arsenic-contaminated wells in the district were ascertained using global positioning system. The total arsenic, inorganic and organic forms, in water and spot-urine samples were determined by atomic absorption spectrophotometry. The prevalence of skin lesions of arsenic was estimated for complex survey design, using surveyfreq and surveylogistic options of SAS 9.1 software.The prevalence of definitive cases i.e. hyperkeratosis of both palms and soles, was 3.4 per 1000 and suspected cases i.e. any sign of arsenic skin lesions (melanosis and/or keratosis), were 13.0 per 1000 among {>=}15-year-old persons in the district. Cumulative arsenic exposure (dose) was calculated from levels of arsenic in water and duration of use of current drinking water source. Prevalence of skin lesions increases with cumulative arsenic exposure (dose) in drinking water and arsenic levels in urine. Skin lesions were 2.5-fold among individuals with BMI <18.5 kg/m{sup 2}. Geographically, more arsenic-contaminated wells and skin lesions were alongside Indus River, suggests a strong link between arsenic contamination of groundwater with proximity to river.This is the first reported epidemiological and clinical evidence of arsenic skin lesions due to groundwater in Pakistan. Further investigations and focal mitigation measures for arsenic may be carried out alongside Indus River.

Fatmi, Zafar, E-mail: zafar.fatmi@aku.edu [Department of Community Health Sciences, Aga Khan University, Stadium Road, P.O. Box 3500, Karachi (Pakistan)] [Department of Community Health Sciences, Aga Khan University, Stadium Road, P.O. Box 3500, Karachi (Pakistan); Azam, Iqbal; Ahmed, Faiza; Kazi, Ambreen; Gill, Albert Bruce; Kadir, Muhmmad Masood; Ahmed, Mubashir; Ara, Naseem; Janjua, Naveed Zafar [Department of Community Health Sciences, Aga Khan University, Stadium Road, P.O. Box 3500, Karachi (Pakistan)] [Department of Community Health Sciences, Aga Khan University, Stadium Road, P.O. Box 3500, Karachi (Pakistan)

2009-07-15T23:59:59.000Z

188

Assessment of arsenic mobility in the soils of some golf courses in South Florida  

E-Print Network (OSTI)

High concentrations of arsenic have been detected in soils and underlying groundwater of some South Florida golf courses, indicating the possible impact of the application of arsenic-containing herbicides.The mobility of arsenic in the soils from selected golf courses was studied using a simple two-step sequential extraction procedure.Sodium nitrate (0.1 M), potassium dihydrogen phosphate (0.1 M) and concentrated nitric acid were used to obtain mobile, mobilizable, and pseudo total arsenic fractions.Soils were separated into fine (-0.25 mm) and large (0.250.75 2 mm) particle size fractions.Arsenic contents were correlated with the distribution of iron (R s0.4827), manganese 2 2 (R s0.7674) and aluminum (R s5459) in the particle size fractions, while such correlation was not observed for soil organic matter, indicating that the oxidesyhydroxides of iron, manganese and aluminum control the distribution of arsenic in these soils.Sodium nitrate and potassium dihydrogen phosphate extractants used in this study extracted large portions of arsenic from most soil samples studied.This is especially true for the fine fraction where the extractable arsenic ranged from 9.2 to 51.3 % with an average of 28.7"13.3%, whereas in the large fraction, arsenic ranged from 7.2 to 24.7 % with an average of 15.4"6.4%. These extractants, however, release only small amounts of iron, manganese, and aluminum.It seems likely that arsenic can be released by sodium nitrate and potassium dihydrogen phosphate without significant dissolution of the oxidesyhydroxides of iron, manganese, and aluminum in

Yong Cai; Julio C. Cabrera; Myron Georgiadis; Krish Jayach

2001-01-01T23:59:59.000Z

189

Characterization and Transcription of Arsenic Respiration and Resistance Genes During In Situ Uranium Bioremediation  

Science Conference Proceedings (OSTI)

The possibility of arsenic release and the potential role of Geobacter in arsenic biogeochemistry during in situ uranium bioremediation was investigated because increased availability of organic matter has been associated with substantial releases of arsenic in other subsurface environments. In a field experiment conducted at the Rifle, CO study site, groundwater arsenic concentrations increased when acetate was added. The number of transcripts from arrA, which codes for the alpha subunit of dissimilatory As(V) reductase, and acr3, which codes for the arsenic pump protein Acr3, were determined with quantitative RT-PCR. Most of the arrA (> 60%) and acr3-1 (> 90%) sequences that were recovered were most similar to Geobacter species, while the majority of acr3-2 (>50%) sequences were most closely related to Rhodoferax ferrireducens. Analysis of transcript abundance demonstrated that transcription of acr3-1 by the subsurface Geobacter community was correlated with arsenic concentrations in the groundwater. In contrast, Geobacter arrA transcript numbers lagged behind the major arsenic release and remained high even after arsenic concentrations declined. This suggested that factors other than As(V) availability regulated transcription of arrA in situ even though the presence of As(V) increased transcription of arrA in cultures of G. lovleyi, which was capable of As(V) reduction. These results demonstrate that subsurface Geobacter species can tightly regulate their physiological response to changes in groundwater arsenic concentrations. The transcriptomic approach developed here should be useful for the study of a diversity of other environments in which Geobacter species are considered to have an important influence on arsenic biogeochemistry.

Giloteaux, L.; Holmes, Dawn E.; Williams, Kenneth H.; Wrighton, Kelly C.; Wilkins, Michael J.; Montgomery, Alison P.; Smith, Jessica A.; Orellana, Roberto; Thompson, Courtney A.; Roper, Thomas J.; Long, Philip E.; Lovley, Derek R.

2013-02-04T23:59:59.000Z

190

Implementation of the hazardous debris rule  

SciTech Connect

Hazardous debris includes objects contaminated with hazardous waste. Examples of debris include tree stumps, timbers, boulders, tanks, piping, crushed drums, personal protective clothing, etc. Most of the hazardous debris encountered comes from Superfund sites and other facility remediation, although generators and treaters of hazardous waste also generate hazardous debris. Major problems associated with disposal of debris includes: Inappropriateness of many waste treatments to debris; Difficulties in obtaining representative samples; Costs associated with applying waste specific treatments to debris; Subtitle C landfill space was being used for many low hazard debris types. These factors brought about the need for debris treatment technologies and regulations that addressed these issues. The goal of such regulation was to provide treatment to destroy or remove the contamination if possible and, if this is achieved, to dispose of the cleaned debris as a nonhazardous waste. EPA has accomplished this goal through promulgation of the Hazardous Debris Rule, August 18, 1992.

Sailer, J.E.

1993-01-05T23:59:59.000Z

191

Proceedings of the eighteenth mid-Atlantic industrial waste conference on toxic and hazardous wastes  

SciTech Connect

This book presents the papers given at a conference on the management of hazardous materials. Topics considered at the conference included underground storage tanks, underground industrial waste tank releases, regulations, cost estimation, metal leaching, spent oil shales, siting power plant ash disposal areas, phosphorous removal by a coal media filter, and waste water characterization and treatment for the coal slurry pipeline industry.

Boardman, G.D.

1986-01-01T23:59:59.000Z

192

Heavy metals in commercial fish in New Jersey  

SciTech Connect

Levels of contaminants in fish are of particular interest because of the potential risk to humans who consume them. While attention has focused on self-caught fish, most of the fish eaten by the American public comes from commercial sources. We sampled 11 types of fish and shellfish obtained from supermarkets and specialty fish markets in New Jersey and analyzed them for arsenic, cadmium, chromium, lead, manganese, mercury, and selenium. We test the null hypothesis that metal levels do not vary among fish types, and we consider whether the levels of any metals could harm the fish themselves or their predators or pose a health risk for human consumers. There were significant interspecific differences for all metals, and no fish types had the highest levels of more than two metals. There were few significant correlations (Kendall tau) among metals for the three most numerous fish (yellowfin tuna, bluefish, and flounder), the correlations were generally low (below 0.40), and many correlations were negative. Only manganese and lead positively were correlated for tuna, bluefish, and flounder. The levels of most metals were below those known to cause adverse effects in the fish themselves. However, the levels of arsenic, lead, mercury, and selenium in some fish were in the range known to cause some sublethal effects in sensitive predatory birds and mammals and in some fish exceeded health-based standards. The greatest risk from different metals resided in different fish; the species of fish with the highest levels of a given metal sometimes exceeded the human health guidance or standards for that metal. Thus, the risk information given to the public (mainly about mercury) does not present a complete picture. The potential of harm from other metals suggests that people not only should eat smaller quantities of fish known to accumulate mercury but also should eat a diversity of fish to avoid consuming unhealthy quantities of other heavy metals. However, consumers should bear in mind that standards have a margin of safety.

Burger, Joanna [Division of Life Sciences, 604 Allison Road, Piscataway, NJ 08854-8082 (United States) and Environmental and Occupational Health Sciences Institute and Consortium for Risk Evaluation with Stakeholder Participation, Piscataway, NJ 08854 (United States)]. E-mail: burger@biology.rutgers.edu; Gochfeld, Michael [Environmental and Occupational Health Sciences Institute and Consortium for Risk Evaluation with Stakeholder Participation, Piscataway, NJ 08854 (United States); Environmental and Occupational Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ 08854 (United States)

2005-11-15T23:59:59.000Z

193

NGNP SITE 2 HAZARDS ASSESSMENT  

SciTech Connect

The Next Generation Nuclear Plant (NGNP) Project initiated at Idaho National Laboratory (INL) by the U.S. Department of Energy pursuant to the 2005 Energy Policy Act, is based on research and development activities supported by the Generation IV Nuclear Energy Systems Initiative. The principal objective of the NGNP Project is to support commercialization of the high temperature gas-cooled reactor (HTGR) technology. The HTGR is a helium-cooled and graphite-moderated reactor that can operate at temperatures much higher than those of conventional light water reactor (LWR) technologies. Accordingly, it can be applied in many industrial applications as a substitute for burning fossil fuels, such as natural gas, to generate process heat in addition to producing electricity, which is the principal application of current LWRs. Nuclear energy in the form of LWRs has been used in the U.S. and internationally principally for the generation of electricity. However, because the HTGR operates at higher temperatures than LWRs, it can be used to displace the use of fossil fuels in many industrial applications. It also provides a carbon emission-free energy supply. For example, the energy needs for the recovery and refining of petroleum, for the petrochemical industry and for production of transportation fuels and feedstocks using coal conversion processes require process heat provided at temperatures approaching 800 C. This temperature range is readily achieved by the HTGR technology. This report summarizes a site assessment authorized by INL under the NGNP Project to determine hazards and potential challenges that site owners and HTGR designers need to be aware of when developing the HTGR design for co-location at industrial facilities, and to evaluate the site for suitability considering certain site characteristics. The objectives of the NGNP site hazard assessments are to do an initial screening of representative sites in order to identify potential challenges and restraints to be addressed in design and licensing processes; assure the HTGR technology can be deployed at variety of sites for a range of applications; evaluate potential sites for potential hazards and describe some of the actions necessary to mitigate impacts of hazards; and, provide key insights that can inform the plant design process. The report presents a summary of the process methodology and the results of an assessment of hazards typical of a class of candidate sites for the potential deployment of HTGR reactor technology. The assessment considered health and safety, and other important siting characteristics to determine the potential impact of identified hazards and potential challenges presented by the location for this technology. A four reactor module nuclear plant (2000 to 2400 MW thermal), that co-generates steam, electricity for general use in the plant, and hot gas for use in a nearby chemical processing facility, to provide the requisite performance and reliability was assumed for the assessment.

Wayne Moe

2011-10-01T23:59:59.000Z

194

and environments and natural hazards  

E-Print Network (OSTI)

The purpose of the curriculum is to provide basic knowledge and understanding of marine debris and its hazardous impact on the marine and coastal ecosystems as well as human health and safety. The primary goal of the curriculum is to provide activities which help students understand the impact of their actions on the marine environment and themselves. The curriculum will provide several hands-on activities and graphing opportunities using Microsoft Excel. The activities and graphing exercises may be modified for other grade levels.

Created Matthew Brim

2009-01-01T23:59:59.000Z

195

Trace metal characterization and speciation in geothermal effluent by multiple scanning anodic stripping voltammetry and atomic absorption analysis  

DOE Green Energy (OSTI)

Recent studies have shown geothermal power plants to have a significant environmental impact on the ground water of the area. The heavy metals arsenic and mercury are special problems, as both are concentrated by flora and fauna exposed to the effluent waters. Because the toxicity of these and other metallic pollutants present in geothermal effluent depends on the chemical form, or speciation, of the particular metal, any serious study of the environmental impact of a geothermal development should include studies of trace metal speciation, in addition to trace metal concentration. This proposal details a method for determining metal speciation in dilute waters. The method is based on ion-exchange and backed by atomic absorption spectrometry and multiple scanning anodic stripping voltammetry. Special laboratory studies will be performed on mercury, arsenic and selenium speciation in synthetic geothermal water. The method will be applied to three known geothermal areas in Washington and Oregon, with emphasis on the speciation of mercury, arsenic and selenium in these waters. The computer controlled electrochemical instrumentation was built and tested. Using this instrumentation, a new experimental procedure was developed to determine the chemical form (speciation) of metal ions in very dilute solutions (ng/ml). This method was tested on model systems including Pb, Cd, and As with C1/sup -/, CO/sub 3//sup 2 -/ and glycine ligands. Finally, the speciation of lead in a geothermal water was examined and the PbC1/sup +/ complex was observed and quantified.

Kowalski, B.R.

1979-05-25T23:59:59.000Z

196

Hazardous Waste Management (Arkansas) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Waste Management (Arkansas) Hazardous Waste Management (Arkansas) Hazardous Waste Management (Arkansas) < Back Eligibility Commercial Construction Fuel Distributor Industrial Investor-Owned Utility Municipal/Public Utility Retail Supplier Rural Electric Cooperative State/Provincial Govt Transportation Utility Program Info State Arkansas Program Type Environmental Regulations Sales Tax Incentive Provider Department of Environmental Quality The Hazardous Waste Program is carried out by the Arkansas Department of Environmental Quality which administers its' program under the Hazardous Waste management Act (Arkansas Code Annotated 8-7-202.) The Hazardous Waste Program is based off of the Federal Resource Conservation and Recovery Act set forth in 40 CFR parts 260-279. Due to the great similarity to the

197

BNL | CFN: Transport of Hazardous Materials  

NLE Websites -- All DOE Office Websites (Extended Search)

Transportation of Hazardous Materials and Nanomaterials Transportation of Hazardous Materials and Nanomaterials The following contains guidance for transporting materials to and from BNL and for on-site transfers. All staff and users must adhere to Laboratory guidelines when making plans to move materials either by commercial carrier or in rented or personal vehicles. BNL hazardous material transport guidelines apply for products that meet the definition of hazardous materials according to 49 CFR 171.8 and any nanomaterial that has known hazardous properties (toxic, flammable, reactive). BNL guidelines are also provided for all other nanomaterials even if they have not been identified as hazardous materials. Some materials may be transported in personal vehicles as per "Materials of Trade" (MOT) guidance. The regulations for transporting MOT are much

198

Hazardous waste management in the Pacific basin  

Science Conference Proceedings (OSTI)

Hazardous waste control activities in Asia and the Pacific have been reviewed. The review includes China (mainland, Hong Kong, and Taiwan), Indonesia, Korea, Malaysia, Papua New Guinea, the Philippines, Singapore, and Thailand. It covers the sources of hazardous waste, the government structure for dealing with hazardous waste, and current hazardous waste control activities in each country. In addition, the hazardous waste program activities of US government agencies, US private-sector organizations, and international organizations are reviewed. The objective of these reviews is to provide a comprehensive picture of the current hazardous waste problems and the waste management approaches being used to address them so that new program activities can be designed more efficiently.

Cirillo, R.R.; Chiu, S.; Chun, K.C.; Conzelmann, G. [Argonne National Lab., IL (United States); Carpenter, R.A.; Indriyanto, S.H. [East-West Center, Honolulu, HI (United States)

1994-11-01T23:59:59.000Z

199

Computer Viruses and Other Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Viruses and Other Hazards Computer Viruses and Other Hazards Name: Paul Status: other Grade: 12+ Location: IL Country: USA Date: May 2, 2011 Question: What is a Computer Virus? What do viruses do? How do viruses Spread? How do I prevent a virus? What are Trojan Horse programs? Malware? Phishing? Replies: Paul From National Institute of Science and Technology Which is the US government office in charge of this problem and should be your reference for this subject At this URL: http://csrc.nist.gov/publications/nistpubs/800-61-rev1/SP800-61rev1.pdf Please find the following definitions from paragraph 5: 5.1.1 Virus: A virus is designed to self-replicate-make copies of itself-and distribute the copies to other files, programs, or computers. Viruses insert themselves into host programs and propagate when the infected program is executed, generally by user interaction (e.g., opening a file, running a program, clicking on a file attachment). Viruses have many purposes-some are designed to play annoying tricks, whereas others have destructive intent. Some viruses present themselves as jokes while performing secret destructive functions. There two major types of viruses are compiled viruses, which are executed by the operating system, and interpreted viruses, which are executed by an application.

200

Proceedings: Hazardous Waste Material Remediation Technology Workshop  

Science Conference Proceedings (OSTI)

This report presents the proceedings of an EPRI workshop on hazardous waste materials remediation. The workshop was the fourth in a series initiated by EPRI to aid utility personnel in assessing technologies for decommissioning nuclear power plants. This workshop focused on specific aspects of hazardous waste management as they relate to nuclear plant decommissioning. The information will help utilities understand hazardous waste issues, select technologies for their individual projects, and reduce decom...

1999-11-23T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Arsenic remediation of drinking water using iron-oxide coated coal bottom ash  

Science Conference Proceedings (OSTI)

We describe laboratory and field results of a novel arsenic removal adsorbent called 'Arsenic Removal Using Bottom Ash' (ARUBA). ARUBA is prepared by coating particles of coal bottom ash, a waste material from coal fired power plants, with iron (hydr)oxide. The coating process is simple and conducted at room temperature and atmospheric pressure. Material costs for ARUBA are estimated to be low (~;;$0.08 per kg) and arsenic remediation with ARUBA has the potential to be affordable to resource-constrained communities. ARUBA is used for removing arsenic via a dispersal-and-removal process, and we envision that ARUBA would be used in community-scale water treatment centers. We show that ARUBA is able to reduce arsenic concentrations in contaminated Bangladesh groundwater to below the Bangladesh standard of 50 ppb. Using the Langmuir isotherm (R2 = 0.77) ARUBA's adsorption capacity in treating real groundwater is 2.6x10-6 mol/g (0.20 mg/g). Time-to-90percent (defined as the time interval for ARUBA to remove 90percent of the total amount of arsenic that is removed at equilibrium) is less than one hour. Reaction rates (pseudo-second-order kinetic model, R2>_ 0.99) increase from 2.4x105 to 7.2x105 g mol-1 min-1 as the groundwater arsenic concentration decreases from 560 to 170 ppb. We show that ARUBA's arsenic adsorption density (AAD), defined as the milligrams of arsenic removed at equilibrium per gram of ARUBA added, is linearly dependent on the initial arsenic concentration of the groundwater sample, for initial arsenic concentrations of up to 1600 ppb and an ARUBA dose of 4.0 g/L. This makes it easy to determine the amount of ARUBA required to treat a groundwater source when its arsenic concentration is known and less than 1600 ppb. Storing contaminated groundwater for two to three days before treatment is seen to significantly increase ARUBA's AAD. ARUBA can be separated from treated water by coagulation and clarification, which is expected to be less expensive than filtration of micron-scale particles, further contributing to the affordability of a community-scale water treatment center.

MATHIEU, JOHANNA L.; GADGIL, ASHOK J.; ADDY, SUSAN E.A.; KOWOLIK, KRISTIN

2010-06-01T23:59:59.000Z

202

Metal Aminoboranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Metal Aminoboranes Metal Aminoboranes Metal Aminoboranes Metal aminoboranes of the formula M(NH.sub.2BH.sub.3).sub.n have been synthesized. June 25, 2013 Metal Aminoboranes Metal aminoboranes of the formula M(NH.sub.2BH.sub.3).sub.n have been synthesized. Available for thumbnail of Feynman Center (505) 665-9090 Email Metal Aminoboranes Metal aminoboranes of the formula M(NH.sub.2BH.sub.3).sub.n have been synthesized. Metal aminoboranes are hydrogen storage materials. Metal aminoboranes are also precursors for synthesizing other metal aminoboranes. Metal aminoboranes can be dehydrogenated to form hydrogen and a reaction product. The reaction product can react with hydrogen to form a hydrogen storage material. Metal aminoboranes can be included in a kit. U.S. Patent No.: 7,713,506 (DOE S-112,798)

203

Hazardous Waste Management (Indiana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Waste Management (Indiana) Hazardous Waste Management (Indiana) Hazardous Waste Management (Indiana) < Back Eligibility Agricultural Fuel Distributor Industrial Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Transportation Utility Program Info State Indiana Program Type Environmental Regulations Provider Indiana Department of Environmental Management The state supports the implementation of source reduction, recycling, and other alternative solid waste management practices over incineration and land disposal. The Department of Environmental Management is tasked regulating hazardous waste management facilities and practices. Provisions pertaining to permitting, site approval, construction, reporting, transportation, and remediation practices and fees are discussed in these

204

Transporting & Shipping Hazardous Materials at LBNL: Lithium...  

NLE Websites -- All DOE Office Websites (Extended Search)

Lithium Batteries Lithium batteries are considered hazardous materials when shipped by air. Notify Shipping for any shipments that include lithium batteries. Note: If you need to...

205

Experiment Hazard Class 3 - High Temperatures  

NLE Websites -- All DOE Office Websites (Extended Search)

* RF and Microwave * UV Light Hydrogen * Hydrogen Electronics * Electrical Equipment * High Voltage Other * Other Class 3 - High Temperatures Applicability The hazard controls...

206

Hazardous Liquid Pipelines and Storage Facilities (Iowa)  

Energy.gov (U.S. Department of Energy (DOE))

This statute regulates the permitting, construction, monitoring, and operation of pipelines transporting hazardous liquids, including petroleum products and coal slurries. The definition used in...

207

Hazardous waste management and pollution prevention  

SciTech Connect

The management of hazardous wastes is one of the most critical environmental issues that faces many developing countries. It is one of the areas where institutional control and treatment and disposal technology has not kept pace with economic development. This paper reviews the development of hazardous waste management methods over the past decades, and provides the information on the status and trends of hazardous waste management strategy in selected western nations. Several issues pertinent to hazardous waste management will be reviewed, including: (1) definition of hazard; (2) why are we concerned with hazardous wastes; (3) aspects of hazardous waste management system; and (4) prioritization of hazardous waste management options. Due to regulatory and economic pressure on hazardous waste management, pollution prevention has become a very important environmental strategy in many developed countries. In many developed countries, industry is increasingly considering such alternative approaches, and finding many opportunities for their cost effective implementation. This paper provides a review of the status and trends of pollution prevention in selected western nations.

Chiu, Shen-yann.

1992-01-01T23:59:59.000Z

208

Hazardous waste management and pollution prevention  

SciTech Connect

The management of hazardous wastes is one of the most critical environmental issues that faces many developing countries. It is one of the areas where institutional control and treatment and disposal technology has not kept pace with economic development. This paper reviews the development of hazardous waste management methods over the past decades, and provides the information on the status and trends of hazardous waste management strategy in selected western nations. Several issues pertinent to hazardous waste management will be reviewed, including: (1) definition of hazard; (2) why are we concerned with hazardous wastes; (3) aspects of hazardous waste management system; and (4) prioritization of hazardous waste management options. Due to regulatory and economic pressure on hazardous waste management, pollution prevention has become a very important environmental strategy in many developed countries. In many developed countries, industry is increasingly considering such alternative approaches, and finding many opportunities for their cost effective implementation. This paper provides a review of the status and trends of pollution prevention in selected western nations.

Chiu, Shen-yann

1992-03-01T23:59:59.000Z

209

DC Hazardous Waste Management (District of Columbia)  

Energy.gov (U.S. Department of Energy (DOE))

This regulation regulates the generation, storage, transportation, treatment, and disposal of hazardous waste, and wherever feasible, reduces or eliminates waste at the source. It is the policy of...

210

Enhancing Railroad Hazardous Materials Transportation Safety...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Safety Rail Routing Enhancing Railroad Hazardous Materials Transportation Safety Rail Routing Presentation made by Kevin Blackwell for the NTSF annual meeting held from May 14-16,...

211

Hazardous Material Transportation Safety (South Dakota)  

Energy.gov (U.S. Department of Energy (DOE))

This legislation authorizes the Division of Highway Safety, in the Department of Public Safety, to promulgate regulations pertaining to the safe transportation of hazardous materials by a motor...

212

Hazardous Waste Management (Michigan) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(Michigan) Hazardous Waste Management (Michigan) Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility StateProvincial Govt Industrial Construction...

213

Hazardous Waste Management (Delaware) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Management (Delaware) Hazardous Waste Management (Delaware) Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility StateProvincial Govt Industrial...

214

Hazardous Waste Management (Oklahoma) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

treatment and storage of such waste. It also mentions the availability of tax credits for waste facilities. Energy recovery from the destruction of a hazardous waste may be...

215

Advisory Committee on Earthquake Hazards Reduction ...  

Science Conference Proceedings (OSTI)

... N ational Research Council road map entitled, National ... A recent upswing in oil and gas activity ... in US national seismic hazard maps 2) Determine ...

2013-03-18T23:59:59.000Z

216

Louisiana Hazardous Waste Control Law (Louisiana)  

Energy.gov (U.S. Department of Energy (DOE))

The Louisiana Department of Environmental Quality is responsible for administering the Louisiana Hazardous Waste Control Law and the regulations created under that law.

217

Date: ____________ MATERIAL FOR HAZARDOUS WASTE DISPOSAL  

E-Print Network (OSTI)

Feb 2003 Date: ____________ MATERIAL FOR HAZARDOUS WASTE DISPOSAL 1) Source: Bldg: ________________________________________ Disinfection? cc YES, Autoclaved (each container tagged with `Treated Biomedical Waste') cc YES, Chemical

Sinnamon, Gordon J.

218

Hazardous Waste Management Implementation Inspection Criteria...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

to the Director of the Office of ES&H Evaluations on (301) 903-5392. Subject: Hazardous Waste Management Inplementation Inspection Criteria, Approach, Evaluations Management Date:...

219

HAZARDOUS MATERIALS MANAGEMENT AND EMERGENCYRESPONSE TRAINING...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Authorization Act authorized the establishment of Hazardous Materials Management and Emergency Response (HAMMER) Training and Education Centers at Department of Energy sites...

220

Extremely Hazardous Substances Risk Management Act (Delaware)  

Energy.gov (U.S. Department of Energy (DOE))

This act lays out provisions for local governments to implement regulations and standards for the management of extremely hazardous substances, which are defined and categorized as follows:

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

AGREEMENT BETWEEN NEW MEXICO ENVIRONMENT DEPARTMENT HAZARDOUS...  

NLE Websites -- All DOE Office Websites (Extended Search)

BETWEEN NEW MEXICO ENVIRONMENT DEPARTMENT HAZARDOUS WASTE BUREAU AND WASTE ISOLATION PILOT PLANT PERMITTEES REGARDING A TIME EXTENSION FOR DISPUTE RESOLUTION RELATED TO FINAL AUDIT...

222

Gender differences in the disposition and toxicity of metals  

SciTech Connect

There is increasing evidence that health effects of toxic metals differ in prevalence or are manifested differently in men and women. However, the database is small. The present work aims at evaluating gender differences in the health effects of cadmium, nickel, lead, mercury and arsenic. There is a markedly higher prevalence of nickel-induced allergy and hand eczema in women compared to men, mainly due to differences in exposure. Cadmium retention is generally higher in women than in men, and the severe cadmium-induced Itai-itai disease was mainly a woman's disease. Gender differences in susceptibility at lower exposure are uncertain, but recent data indicate that cadmium has estrogenic effects and affect female offspring. Men generally have higher blood lead levels than women. Lead accumulates in bone and increased endogenous lead exposure has been demonstrated during periods of increased bone turnover, particularly in women in pregnancy and menopause. Lead and mercury, in the form of mercury vapor and methylmercury, are easily transferred from the pregnant women to the fetus. Recent data indicate that boys are more susceptible to neurotoxic effects of lead and methylmercury following exposure early in life, while experimental data suggest that females are more susceptible to immunotoxic effects of lead. Certain gender differences in the biotransformation of arsenic by methylation have been reported, and men seem to be more affected by arsenic-related skin effect than women. Experimental studies indicate major gender differences in arsenic-induced cancer. Obviously, research on gender-related differences in health effects caused by metals needs considerable more focus in the future.

Vahter, Marie [Divisions of Metals and Health and Toxicology and Neurotoxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm (Sweden)]. E-mail: Marie.Vahter@imm.ki.se; Akesson, Agneta [Divisions of Metals and Health and Toxicology and Neurotoxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm (Sweden); Liden, Carola [Occupational and Environmental Dermatology, Department of Medicine, Karolinska, Institutet and Stockholm County Council (Sweden); Ceccatelli, Sandra [Divisions of Metals and Health and Toxicology and Neurotoxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm (Sweden); Berglund, Marika [Divisions of Metals and Health and Toxicology and Neurotoxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm (Sweden)

2007-05-15T23:59:59.000Z

223

Hazardous Chemical Waste Management Reference Guide for Laboratories 9 1 Identification of Hazardous Chemical Waste  

E-Print Network (OSTI)

Hazardous Chemical Waste Management Reference Guide for Laboratories 9 1 · Identification of Hazardous Chemical Waste OBJECTIVES Do you know how to do the following? If you do, skip ahead a material must be considered a hazardous chemical waste by using the Radiological-Chemical

Ford, James

224

Focus Sheet | Hazardous Waste Checklist How to be ready for state hazardous waste  

E-Print Network (OSTI)

Focus Sheet | Hazardous Waste Checklist How to be ready for state hazardous waste inspectors. See a hazardous waste inspection. ons, rrosive. n hemicals? ical waste. Waste-like chemicals have als Are you. Are your waste containers properly labeled? us Waste label as soon t Do you accumulate waste in a safe

Wilcock, William

225

Site characterization and hazard assessment criteria for natural phenomena hazards at DOE sites  

Science Conference Proceedings (OSTI)

This paper briefly summarizes requirements for site characterization and hazard assessment of Natural Phenomena Hazards for compliance with DOE Order 5480.28. The site characterization criteria for NPH evaluation are provided in a draft DOE-STD-1022-XX and the assessment criteria of natural phenomena hazards are provided in draft DOE-STD-1023-XX.

Chen, J.C.; Lu, S.C.; Ueng, T.S.; Boissonnade, A.C.

1993-09-01T23:59:59.000Z

226

Lawn and Garden Tool Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Root Out Lawn and Garden Tool Hazards For many Americans, working outdoors on the lawn and in the garden is a great way to exercise and relax. However, safety experts warn that, if caution is not employed with lawn and garden tools, you could wind up spending more time indoors, starting with a trip to a hospital emergency room. "The most frequent injuries are from lawn mowers, which are unforgiving machines," cautions John Drengenberg, manager of Consumer Affairs for Underwriters Laboratories Inc., Northbrook, Ill., a not-for-profit product safety testing organization. "Statistics tell us that each year lawn mower accidents send close to 85,000 people to emergency rooms. But that's not all. Nearly 15,000 others need medical treatment for injuries from trimmers and other power garden

227

Arsenic remediation of drinking water using iron-oxide coated coal bottom  

NLE Websites -- All DOE Office Websites (Extended Search)

Arsenic remediation of drinking water using iron-oxide coated coal bottom Arsenic remediation of drinking water using iron-oxide coated coal bottom ash Title Arsenic remediation of drinking water using iron-oxide coated coal bottom ash Publication Type Journal Article Year of Publication 2010 Authors Mathieu, Johanna L., Ashok J. Gadgil, Susan E. Addy, and Kristin Kowolik Journal Environmental Science and Health Keywords airflow and pollutant transport group, arsenic, bangladesh, coal bottom ash, drinking water, indoor environment department, water contaminants, water treatment Abstract We describe laboratory and field results of a novel arsenic removal adsorbent called 'Arsenic Removal Using Bottom Ash' (ARUBA). ARUBA is prepared by coating particles of coal bottom ash, a waste material from coal fired power plants, with iron (hydr)oxide. The coating process is simple and conducted at room temperature and atmospheric pressure. Material costs for ARUBA are estimated to be low (~$0.08 per kg) and arsenic remediation with ARUBA has the potential to be affordable to resource-constrained communities. ARUBA is used for removing arsenic via a dispersal-and-removal process, and we envision that ARUBA would be used in community-scale water treatment centers. We show that ARUBA is able to reduce arsenic concentrations in contaminated Bangladesh groundwater to below the Bangladesh standard of 50 ppb. Using the Langmuir isotherm (R2 = 0.77) ARUBA's adsorption capacity in treating real groundwater is 2.6×10-6 mol/g (0.20 mg/g). Time-to-90% (defined as the time interval for ARUBA to remove 90% of the total amount of arsenic that is removed at equilibrium) is less than one hour. Reaction rates (pseudo-second-order kinetic model, R2 ≥ 0.99) increase from 2.4×105 to 7.2×105 g mol-1 min-1 as the groundwater arsenic concentration decreases from 560 to 170 ppb. We show that ARUBA's arsenic adsorption density (AAD), defined as the milligrams of arsenic removed at equilibrium per gram of ARUBA added, is linearly dependent on the initial arsenic concentration of the groundwater sample, for initial arsenic concentrations of up to 1600 ppb and an ARUBA dose of 4.0 g/L. This makes it easy to determine the amount of ARUBA required to treat a groundwater source when its arsenic concentration is known and less than 1600 ppb. Storing contaminated groundwater for two to three days before treatment is seen to significantly increase ARUBA's AAD. ARUBA can be separated from treated water by coagulation and clarification, which is expected to be less expensive than filtration of micron-scale particles, further contributing to the affordability of a community-scale water treatment center

228

The hydrogeochemistry of pond and rice field recharge : implications for the arsenic contaminated aquifers in Bangladesh  

E-Print Network (OSTI)

The shallow aquifers in Bangladesh, which provide drinking water for millions and irrigation water for innumerable rice fields, are severely contaminated with geogenic arsenic. Water mass balance calculations show that ...

Neumann, Rebecca B

2010-01-01T23:59:59.000Z

229

Arsenic remediation of drinking water using iron-oxide coated coal bottom ash  

E-Print Network (OSTI)

using Iron-oxide Coated Coal Ash. In Arsenic Contaminationwaterusing iron?oxidecoatedcoalbottomash JohannaL. using iron-oxide coated coal bottom ash JOHANNA L. MATHIEU

MATHIEU, JOHANNA L.

2010-01-01T23:59:59.000Z

230

Effect of hydrological flow pattern on groundwater arsenic concentration in Bangladesh by Khandaker Ashfaque.  

E-Print Network (OSTI)

Widespread arsenic contamination of groundwater has become a major concern in Bangladesh since the water supply, particularly in rural areas, is heavily dependent on groundwater. However, relative to the extent of research ...

Ashfaque, Khandaker

2007-01-01T23:59:59.000Z

231

In situ chemical fixation of arsenic-contaminated soils: An experimental study  

E-Print Network (OSTI)

solid waste, physical/chemical methods. 3rd ed. Washington,solid waste, physical/chemical methods. 3rd ed. U.S.DE, Brantley SL, Hennet RJC. Chemical fixation of arsenic in

Yang, Li; Donahoe, Rona J.; Redwine, James C.

2007-01-01T23:59:59.000Z

232

Hazardous Waste Technician Vandenberg AFB, California  

E-Print Network (OSTI)

Hazardous Waste Technician Vandenberg AFB, California POSITION A Hazardous Waste Technician, California. ORGANIZATION CEMML is a research, education and service unit within the Warner College of Natural of California. The base, with its 45 miles of scenic coastline, is home to 53 species of mammals, 315 species

233

Fire and explosion hazards of oil shale  

SciTech Connect

The US Bureau of Mines publication presents the results of investigations into the fire and explosion hazards of oil shale rocks and dust. Three areas have been examined: the explosibility and ignitability of oil shale dust clouds, the fire hazards of oil shale dust layers on hot surfaces, and the ignitability and extinguishment of oil shale rubble piles. 10 refs., 54 figs., 29 tabs.

1989-01-01T23:59:59.000Z

234

CHEMICAL HYGIENE PLAN HAZARD COMMUNICATION PLAN  

E-Print Network (OSTI)

CHEMICAL HYGIENE PLAN AND HAZARD COMMUNICATION PLAN Occupational Exposures to Hazardous Chemicals and Safety Numbers Research Safety 2723 Environmental Health/Safety Chemical Hygiene Officer Radiation Safety Human Resources (Accident Reports) 4589 Clinical Engineering 2964 #12;TABLE OF CONTENTS CHEMICAL HYGIENE

Oliver, Douglas L.

235

CHEMICAL HYGIENE PLAN HAZARD COMMUNICATION PLAN  

E-Print Network (OSTI)

CHEMICAL HYGIENE PLAN AND HAZARD COMMUNICATION PLAN Occupational Exposures to Hazardous Chemicals Safety 2723 Environmental Health/Safety Chemical Hygiene Officer Radiation Safety Officer Biological (Accident Reports) 2204 Bioengineering 2965 #12;TABLE OF CONTENTS CHEMICAL HYGIENE PLAN (CHP) (4/2007) 1

Oliver, Douglas L.

236

CHEMICAL HYGIENE PLAN HAZARD COMMUNICATION PLAN  

E-Print Network (OSTI)

CHEMICAL HYGIENE PLAN AND HAZARD COMMUNICATION PLAN Occupational Exposures to Hazardous Chemicals and Safety Numbers Research Safety 2723 Environmental Health/Safety Chemical Hygiene Officer Radiation Safety Human Resources (Accident Reports) 4589 Bioengineering 2965 #12;TABLE OF CONTENTS CHEMICAL HYGIENE PLAN

Kim, Duck O.

237

Energy and solid/hazardous waste  

Science Conference Proceedings (OSTI)

This report addresses the past and potential future solid and hazardous waste impacts from energy development, and summarizes the major environmental, legislation applicable to solid and hazardous waste generation and disposal. A glossary of terms and acronyms used to describe and measure solid waste impacts of energy development is included. (PSB)

None

1981-12-01T23:59:59.000Z

238

Prediction of the Environmental Mobility of Arsenic: Selection and Use of Partitioning Coefficients  

Science Conference Proceedings (OSTI)

Arsenic migration is slower than water movement in groundwater environments. As a result, prediction of groundwater arsenic migration requires knowledge of the difference in these transport rates -- defined as the retardation factor. A crucial part of the definition of the retardation factor is the partition coefficient, Kd. Because retardation is a required input for contaminant transport calculations and modeling, Kd must be known, assumed, or estimated to predict retardation. Two fundamental approache...

2002-11-01T23:59:59.000Z

239

Prediction of the Environmental Mobility of Arsenic: Laboratory Measurement of Partitioning Coefficients  

Science Conference Proceedings (OSTI)

Several North American electric utility companies used arsenic-based herbicides at electrical substations from the 1940s through the mid-1960s. Measurements show that groundwater contamination has occurred at some substation sites but not at others. Contamination plumes are very large in some cases and very small in others. Based on electric utility experience and published literature, several variables (such as the amount of iron, aluminum oxides, and hydroxides) are known to influence arsenic mobility ...

2003-06-30T23:59:59.000Z

240

Transporting & Shipping Hazardous Materials at LBNL  

NLE Websites -- All DOE Office Websites (Extended Search)

EHSS EHSS Industrial Hygiene Group HazMat Transport/Shipping Home Biological & Infectious Substances Chemicals Compressed Gas Cryogens Dry Ice Engineered Nanomaterials Gasoline Lithium Betteries Radioactive Materials Waste: Hazardous, Biohazardous, Medical or Radioactive Mixed Hazardous Materials Personal/Rental Vehicles HazMat Transport/Shipping Transporting and shipping hazardous materials can be dangerous, but both activities can be done safely - much of it by the researchers themselves. Each of the items below is subject to some transportation or shipping restrictions. Click on the applicable hazardous material icon below to learn how you can safely (and legally) transport that hazardous material and to learn what laboratory resources are available to you for your shipping needs.

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Massachusetts Hazardous Waste Facility Siting Act (Massachusetts) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Massachusetts Hazardous Waste Facility Siting Act (Massachusetts) Massachusetts Hazardous Waste Facility Siting Act (Massachusetts) Massachusetts Hazardous Waste Facility Siting Act (Massachusetts) < Back Eligibility Commercial Fed. Government Fuel Distributor Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Tribal Government Utility Program Info State Massachusetts Program Type Siting and Permitting Provider Department of Environmental Protection This Act establishes the means by which developers of proposed hazardous waste facilities will work with the community in which they wish to construct a facility. When the intent to construct, maintain, and/or operate a hazardous waste facility in a city or town is demonstrated, a local assessment committee will be established by that community. The

242

Trace metals in sediments of coastal Siberia  

E-Print Network (OSTI)

For the work described in this thesis, a total of 218 samples from 104 cores from the East Siberian, Laptev, Kara, and Pechora Seas and the Ob and Yenisei Rivers were analyzed for the trace metals Ag, As, Ba, Cd, Cr, Cu, Fe, Hg, Ni, Pb, Sb, and Zn. To make comparisons between locations easier, the concentration of all elements was normalized to Fe to account for variability in grain size and mineralogy. For the metals Ag, Cd, and Hg there was poor correlation with Fe, likely partially due to analytical variations caused by the low concentrations of these elements. Copper, Ni and Zn showed good correlation with Fe, suggesting these elements are from natural inputs to the sediments. Arsenic, Ba, Cr, Pb, and Sb showed variable correlations, suggesting a more mafic (basaltic) mineral phase at some locations and/or diagenetic redistribution of these metals. No statistically significant differences were found between metal to Fe ratios at the surface (0-2.5 cm) of the sediment cores and the bottoms (5- 1 00 cm), with a few exceptions. There was also no statistically significant difference in the average metal to Fe ratios of the East Siberian and Laptev Seas. There was, however, a significant difference when these two seas were compared to the Kara and Pechora Seas, suggesting different mineralogy in the drainage basins of eastern and western Siberia. Sediment from the Kara Sea was similar in trace metal concentration to sediment from its likely source, the Ob and Yenisei rivers.

Esnough, Teresa Elizabeth

1996-01-01T23:59:59.000Z

243

Hazard Analysis for In Tank Spray Leaks  

SciTech Connect

The River Protection Project (RPP) Authorization Basis (AB) contains controls that address spray leaks in tanks. However, there are no hazardous conditions in the Hazards Database that specifically identify in-tank spray leak scenarios. The purpose of this Hazards Evaluation is to develop hazardous conditions related to in-tank spray leaks for the Hazards Database and to provide more complete coverage of Tank Farm facilities. Currently, the in-tank spray leak is part of the ''Spray Leak in Structures or From Waste Transfer Lines'' accidents in Section 3.4.2.9 of the Final Safety Analysis Report (FSAR) (CHG, 2000a). The accident analysis for the ''Spray Leak in Structure or From Waste Transfer Lines'' states the following regarding the location of a possible spray leak: Inside ventilated waste storage tanks (DSTs, DCRTs, and some SSTs). Aerosols could be generated inside a storage tank during a transfer because of a leak from the portion of the transfer pipe inside the tank. The tank ventilation system could help disperse the aerosols to the atmosphere should the vent system HEPA filters fail. This Hazards Evaluation also evaluates the controls currently assigned to the spray leak in structure accident and determines the applicability of the controls to the new hazardous conditions. This comparison reviews both the analysis in the FSAR and the controls found in the Technical Safety Requirements (TSRs) (CHG, 2000h). If the new hazardous conditions do not match the analyzed accident conditions and controls, then additional analysis may be required. This document is not intended to authorize the activity or determine the adequacy of controls; it is only intended to provide information about the hazardous conditions associated with this activity. The Control decision process as defined in the AB will be used to determine the adequacy of controls and whether the proposed activity is within the AB. This hazard evaluation does not constitute an accident analysis.

GRAMS, W.H.

2000-06-13T23:59:59.000Z

244

Technology transfer in hazardous waste management  

SciTech Connect

Hazardous waste is a growing problem in all parts of the world. Industrialized countries have had to deal with the treatment and disposal of hazardous wastes for many years. The newly industrializing countries of the world are now faced with immediate problems of waste handling. The developing nations of the world are looking at increasing quantities of hazardous waste generation as they move toward higher levels of industrialization. Available data are included on hazardous waste generation in Asia and the Pacific as a function of Gross Domestic Product (GDP). Although there are many inconsistencies in the data (inconsistent hazardous waste definitions, inconsistent reporting of wastes, etc.) there is definite indication that a growing economy tends to lead toward larger quantities of hazardous waste generation. In developing countries the industrial sector is growing at a faster rate than in the industrialized countries. In 1965 industry accounted for 29% of GDP in the developing countries of the world. In 1987 this had grown to 37% of GDP. In contrast, industry accounted for 40% of GDP in 1965 in industrialized countries and dropped to 35% in 1987. This growth in industrial activity in the developing countries brings an increase in the need to handle hazardous wastes. Although hazardous wastes are ubiquitous, the control of hazardous wastes varies. The number of regulatory options used by various countries in Asia and the Pacific to control wastes are included. It is evident that the industrialized countries, with a longer history of having to deal with hazardous wastes, have found the need to use more mechanisms to control them. 2 refs., 2 figs.

Drucker, H.

1989-01-01T23:59:59.000Z

245

Prediction of the Environmental Mobility of Arsenic: Evaluation of a Mechanistic Approach to Modeling Water-Rock Partitioning  

Science Conference Proceedings (OSTI)

Arsenic chemistry is important to the drinking water, waste management, and energy industries because of its potential health effects from low levels of exposure, breadth of occurrence, and expense of current treatment and disposal technologies. Since predicting arsenic behavior and mobility in the environment is currently not well developed, this project was undertaken to increase knowledge by testing and evaluating a mechanistic model for arsenic water-mineral partitioning.

2000-09-06T23:59:59.000Z

246

Reactive oxygen species mediate arsenic induced cell transformation and tumorigenesis through Wnt/{beta}-catenin pathway in human colorectal adenocarcinoma DLD1 cells  

SciTech Connect

Long term exposure to arsenic can increase incidence of human cancers, such as skin, lung, and colon rectum. The mechanism of arsenic induced carcinogenesis is still unclear. It is generally believed that reactive oxygen species (ROS) may play an important role in this process. In the present study, we investigate the possible linkage between ROS, {beta}-catenin and arsenic induced transformation and tumorigenesis in human colorectal adenocarcinoma cell line, DLD1 cells. Our results show that arsenic was able to activate p47{sup phox} and p67{sup phox}, two key proteins for activation of NADPH oxidase. Arsenic was also able to generate ROS in DLD1 cells. Arsenic increased {beta}-catenin expression level and its promoter activity. ROS played a major role in arsenic-induced {beta}-catenin activation. Treatment of DLD1 cells by arsenic enhanced both transformation and tumorigenesis of these cells. The tumor volumes of arsenic treated group were much larger than those without arsenic treatment. Addition of either superoxide dismutase (SOD) or catalase reduced arsenic induced cell transformation and tumor formation. The results indicate that ROS are involved in arsenic induced cell transformation and tumor formation possible through Wnt/{beta}-catenin pathway in human colorectal adenocarcinoma cell line DLD1 cells. - Highlights: > Arsenic activates NADPH oxidase and increases reactive oxygen species generation in DLD1 cells. > Arsenic increases {beta}-catenin expression. > Inhibition of ROS induced by arsenic reduce {beta}-catenin expression. > Arsenic increases cell transformation in DLD1 cells and tumorigenesis in nude mice. > Blockage of ROS decrease cell transformation and tumorigenesis induced by arsenic.

Zhang Zhuo [Department of Preventive Medicine and Environmental Health, University of Kentucky, 121 Washington Avenue, Lexington, KY 40536 (United States); Wang Xin; Cheng Senping; Sun Lijuan; Son, Young-Ok [Graduate Center for Toxicology, University of Kentucky, 1095 VA Drive, Lexington, KY 40536 (United States); Yao Hua [Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003 (China); Li Wenqi [Department of Preventive Medicine and Environmental Health, University of Kentucky, 121 Washington Avenue, Lexington, KY 40536 (United States); Budhraja, Amit [Graduate Center for Toxicology, University of Kentucky, 1095 VA Drive, Lexington, KY 40536 (United States); Li Li [Department of Family Medicine, Case Western Reserve University, Cleveland, OH 44106 (United States); Shelton, Brent J.; Tucker, Thomas [Markey Cancer Control Program, University of Kentucky, 2365 Harrodsburg Rd, Lexington, KY 40504 (United States); Arnold, Susanne M. [Markey Cancer Center, University of Kentucky, 800 Rose street, Lexington, KY 40536 (United States); Shi Xianglin, E-mail: Xianglin.sh@uky.edu [Graduate Center for Toxicology, University of Kentucky, 1095 VA Drive, Lexington, KY 40536 (United States)

2011-10-15T23:59:59.000Z

247

Apparatus for transporting hazardous materials  

DOE Patents (OSTI)

An apparatus and method are provided for selectively receiving, transporting, and releasing one or more radioactive or other hazardous samples for analysis on a differential thermal analysis (DTA) apparatus. The apparatus includes a portable sample transporting apparatus for storing and transporting the samples and includes a support assembly for supporting the transporting apparatus when a sample is transferred to the DTA apparatus. The transporting apparatus includes a storage member which includes a plurality of storage chambers arrayed circumferentially with respect to a central axis. An adjustable top door is located on the top side of the storage member, and the top door includes a channel capable of being selectively placed in registration with the respective storage chambers thereby permitting the samples to selectively enter the respective storage chambers. The top door, when closed, isolates the respective samples within the storage chambers. A plurality of spring-biased bottom doors are located on the bottom sides of the respective storage chambers. The bottom doors isolate the samples in the respective storage chambers when the bottom doors are in the closed position. The bottom doors permit the samples to leave the respective storage chambers from the bottom side when the respective bottom doors are in respective open positions. The bottom doors permit the samples to be loaded into the respective storage chambers after the analysis for storage and transport to a permanent storage location.

Osterman, Robert A. (Canonsburg, PA); Cox, Robert (West Mifflin, PA)

1992-01-01T23:59:59.000Z

248

Apparatus for incinerating hazardous waste  

DOE Patents (OSTI)

An apparatus is described for incinerating wastes, including an incinerator having a combustion chamber, a fluid-tight shell enclosing the combustion chamber, an afterburner, an off-gas particulate removal system and an emergency off-gas cooling system. The region between the inner surface of the shell and the outer surface of the combustion chamber forms a cavity. Air is supplied to the cavity and heated as it passes over the outer surface of the combustion chamber. Heated air is drawn from the cavity and mixed with fuel for input into the combustion chamber. The pressure in the cavity is maintained at least approximately 2.5 cm WC higher than the pressure in the combustion chamber. Gases cannot leak from the combustion chamber since the pressure outside the chamber (inside the cavity) is higher than the pressure inside the chamber. The apparatus can be used to treat any combustible wastes, including biological wastes, toxic materials, low level radioactive wastes, and mixed hazardous and low level transuranic wastes. 1 figure.

Chang, R.C.W.

1994-12-20T23:59:59.000Z

249

Apparatus for incinerating hazardous waste  

DOE Patents (OSTI)

An apparatus for incinerating wastes, including an incinerator having a combustion chamber, a fluidtight shell enclosing the combustion chamber, an afterburner, an off-gas particulate removal system and an emergency off-gas cooling system. The region between the inner surface of the shell and the outer surface of the combustion chamber forms a cavity. Air is supplied to the cavity and heated as it passes over the outer surface of the combustion chamber. Heated air is drawn from the cavity and mixed with fuel for input into the combustion chamber. The pressure in the cavity is maintained at least approximately 2.5 cm WC (about 1" WC) higher than the pressure in the combustion chamber. Gases cannot leak from the combustion chamber since the pressure outside the chamber (inside the cavity) is higher than the pressure inside the chamber. The apparatus can be used to treat any combustible wastes, including biological wastes, toxic materials, low level radioactive wastes, and mixed hazardous and low level transuranic wastes.

Chang, Robert C. W. (Martinez, GA)

1994-01-01T23:59:59.000Z

250

Prioritized research for reducing the seismic hazards of ...  

Science Conference Proceedings (OSTI)

... to improve performance under other hazards (eg, wind hazards or ... versus re-use a building (ie, evaluation based on equivalent carbon footprint) ...

2008-03-13T23:59:59.000Z

251

Vegetation Cover Analysis of Hazardous Waste Sites in Utah and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Vegetation Cover Analysis of Hazardous Waste Sites in Utah and Arizona Using Hyperspectral Remote Sensing Vegetation Cover Analysis of Hazardous Waste Sites in Utah and Arizona...

252

FAQ 12-What are the hazards associated with uranium hexafluoride...  

NLE Websites -- All DOE Office Websites (Extended Search)

hazards associated with uranium hexafluoride? What are the hazards associated with uranium hexafluoride? The characteristics of UF6 pose potential health risks, and the material is...

253

Abatement of Air Pollution: Hazardous Air Pollutants (Connecticut)  

Energy.gov (U.S. Department of Energy (DOE))

These regulations describe maximum allowable stack concentrations and hazard limiting values for the emission of hazardous air pollutants. The regulations also discuss sampling procedures for...

254

Massachusetts Oil and Hazardous Material Release Prevention and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oil and Hazardous Material Release Prevention and Response Act, State Superfund Law (Massachusetts) Massachusetts Oil and Hazardous Material Release Prevention and Response Act,...

255

Hazards Control, 3/9/35 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazards Control, 3935 Hazards Control, 3935 The objective of this surveillance is to evaluate the effectiveness of the contractor's programs and policy for establishing...

256

Solid Waste Disposal, Hazardous Waste Management Act, Underground...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Disposal, Hazardous Waste Management Act, Underground Storage Act (Tennessee) Solid Waste Disposal, Hazardous Waste Management Act, Underground Storage Act (Tennessee) Eligibility...

257

Integrating waste management with Job Hazard analysis  

Science Conference Proceedings (OSTI)

The web-based Automated Job Hazard Analysis (AJHA) system is a tool designed to help capture and communicate the results of the hazard review and mitigation process for specific work activities. In Fluor Hanford's day-to-day work planning and execution process, AJHA has become the focal point for integrating Integrated Safety Management (ISM) through industrial health and safety principles; environmental safety measures; and involvement by workers, subject-matter experts and management. This paper illustrates how AJHA has become a key element in involving waste-management and environmental-control professionals in planning and executing work. To support implementing requirements for waste management and environmental compliance within the core function and guiding principles of an integrated safety management system (ISMS), Fluor Hanford has developed the a computer-based application called the 'Automated Job Hazard Analysis' (AJHA), into the work management process. This web-based software tool helps integrate the knowledge of site workers, subject-matter experts, and safety principles and requirements established in standards, and regulations. AJHA facilitates a process of work site review, hazard identification, analysis, and the determination of specific work controls. The AJHA application provides a well-organized job hazard analysis report including training and staffing requirements, prerequisite actions, notifications, and specific work controls listed for each sub-task determined for the job. AJHA lists common hazards addressed in the U.S. Occupational, Safety, and Health Administration (OSHA) federal codes; and State regulations such as the Washington Industrial Safety and Health Administration (WISHA). AJHA also lists extraordinary hazards that are unique to a particular industry sector, such as radiological hazards and waste management. The work-planning team evaluates the scope of work and reviews the work site to identify potential hazards. Hazards relevant to the work activity being analyzed are selected from the listing provided in AJHA. The work team can also enter one-time hazards unique to the work activity. Because AJHA is web based, it can be taken into the field during site walk-downs using wireless or cell- phone technologies. Once hazards are selected, AJHA automatically lists mandatory and optional controls, based on the referenced codes and good work practices. The hazards selected may also require that additional specific analysis be performed, focusing on the unique characteristics of the job being analyzed. For example, the physical characteristics, packaging, handling, and disposal requirements for a specific waste type. The work team then evaluates the identified hazards and related controls and adds details as needed for the specific work activity being analyzed. The selection of relevant hazards also triggers required reviews by subject-matter experts (SMEs) and the on-line completion of necessary forms and permits. The details of the hazard analysis are reviewed on line or in a work- team group setting. SME approvals are entered on-line and are published in the job hazard analysis report. (authors)

NONE

2007-07-01T23:59:59.000Z

258

Arsenate uptake, sequestration and reduction by a freshwater cyanobacterium: a potenial biologic control of arsenic in South Texas  

E-Print Network (OSTI)

The toxicity and adverse health effects of arsenic are widely known. It is generally accepted that sorption/desorption reactions with oxy-hydroxide minerals (iron, manganese) control the fate and transport of inorganic arsenic in surface waters through adsorption and precipitation-dissolution processes. In terrestrial environments with limited reactive iron, recent data suggest organoarsenicals are potentially important components of the biogeochemical cycling of arsenic in near-surface environments. Elevated arsenic levels are common in South Texas from geogenic processes (weathering of As-containing rock units) and anthropogenic sources (a byproduct from decades of uranium mining). Sediments collected from South Texas show low reactive iron concentrations, undetectable in many areas, making oxy-hydroxide controls on arsenic unlikely. Studies have shown that eukaryotic algae isolated from arsenic-contaminated waters have increased tolerance to arsenate toxicity and the ability to uptake and biotransform arsenate. In this experiment, net uptake of arsenic over time by a freshwater cyanobacterium never previously exposed to arsenate was quantified as a function of increasing As concentrations and increasing N:P ratios. Toxic effects were not evident when comparing cyanobacterial growth, though extractions indicate accumulation of intracellular arsenic by the cyanobacterium. Increasing N:P ratios has minimal effect on net arsenate uptake over an 18 day period. However, cyanobacteria were shown to reduce arsenate at rates faster than the system can re-oxidize the arsenic suggesting gross arsenate uptake may be much higher. Widespread arsenate reduction by cyanobacterial blooms would increase arsenic mobility and potential toxicity and may be useful as a biomarker of arsenic exposure in oxic surface water environments.

Markley, Christopher Thomas

2003-05-01T23:59:59.000Z

259

Processing of solid mixed waste containing radioactive and hazardous materials  

DOE Patents (OSTI)

Apparatus for the continuous heating and melting of a solid mixed waste bearing radioactive and hazardous materials to form separate metallic, slag and gaseous phases for producing compact forms of the waste material to facilitate disposal includes a copper split water-cooled (cold) crucible as a reaction vessel for receiving the waste material. The waste material is heated by means of the combination of a plasma torch directed into the open upper portion of the cold crucible and an electromagnetic flux produced by induction coils disposed about the crucible which is transparent to electromagnetic fields. A metallic phase of the waste material is formed in a lower portion of the crucible and is removed in the form of a compact ingot suitable for recycling and further processing. A glass-like, non-metallic slag phase containing radioactive elements is also formed in the crucible and flows out of the open upper portion of the crucible into a slag ingot mold for disposal. The decomposition products of the organic and toxic materials are incinerated and converted to environmentally safe gases in the melter.

Gotovchikov, Vitaly T. (Moscow, RU); Ivanov, Alexander V. (Moscow, RU); Filippov, Eugene A. (Moscow, RU)

1998-05-12T23:59:59.000Z

260

Processing of solid mixed waste containing radioactive and hazardous materials  

DOE Patents (OSTI)

Apparatus for the continuous heating and melting of a solid mixed waste bearing radioactive and hazardous materials to form separate metallic, slag and gaseous phases for producing compact forms of the waste material to facilitate disposal includes a copper split water-cooled (cold) crucible as a reaction vessel for receiving the waste material. The waste material is heated by means of the combination of a plasma torch directed into the open upper portion of the cold crucible and an electromagnetic flux produced by induction coils disposed about the crucible which is transparent to electromagnetic fields. A metallic phase of the waste material is formed in a lower portion of the crucible and is removed in the form of a compact ingot suitable for recycling and further processing. A glass-like, non-metallic slag phase containing radioactive elements is also formed in the crucible and flows out of the open upper portion of the crucible into a slag ingot mold for disposal. The decomposition products of the organic and toxic materials are incinerated and converted to environmentally safe gases in the melter. 6 figs.

Gotovchikov, V.T.; Ivanov, A.V.; Filippov, E.A.

1998-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

All Hazard Awareness Employee Pocket Guide  

NLE Websites -- All DOE Office Websites (Extended Search)

Hazard Hazard Awareness Employee Pocket Guide produced by Emergency Services Program For emergencies dial x7911 911 from cell phones berkeley lab Lawrence Berkeley National Laboratory 2 Emergency Preparedness Response FOR EMERGENCY RESPONSE x7911 911 from cell phones Employee Pocket Guide 3 FOR EMERGENCY RESPONSE x7911 911 from cell phones Employee Emergency Response Expectations Before an emergency: * Accept personal responsibility for your own safety. * Prepare your personal/family emergency plan. * Review your Building Emergency Plan (BEP) or Emergency Response Guide. * Know the location of all your building's exits and Assembly Areas. * Know the specific hazards in your area and the response procedures for each hazard. * Understand how to report an emergency.

262

Enhancing Railroad Hazardous Materials Transportation Safety  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Railroad Hazardous g Railroad Hazardous g Materials Transportation Safety Kevin R. Blackwell Kevin R. Blackwell Kevin R. Blackwell Kevin R. Blackwell Radioactive Materials Program Manager Radioactive Materials Program Manager H d M t i l Di i i H d M t i l Di i i Hazmat Hazardous Materials Division Hazardous Materials Division Federal Railroad Administration Federal Railroad Administration Presentation for the Presentation for the DOE NTSF Meeting DOE NTSF Meeting May 10 May 10- -12, 2011 12, 2011 Our Regulated Community * More than 550 l d railroads * 170,000 miles of track * 220,000 employees * 1.3 million railcars * 20,000 locomotives Hazmat * 3,500 chemical shippers * Roughly 2 Million Roughly 2 Million annual HM shipments HM-232E Introduction * Notice of Proposed Rulemaking d b * Issued December 21, 2006 * Interim Final Rule

263

Frozen Ground 9 PERMAFROST HAZARDS IN MOUNTAINS  

E-Print Network (OSTI)

of potentially hazardous processes in regions with mountain permafrost. Buildings and utilities may be dam- aged for the maintenance or construction of high- mountain infrastructure. Increasing rockfall activity and a number

Kääb, Andreas

264

Hazards Control Department 1995 annual report  

Science Conference Proceedings (OSTI)

This annual report of the Hazards Control Department activities in 1995 is part of the department`s efforts to foster a working environment at Lawrence Livermore National Laboratory (LLNL) where every person desire to work safely.

Campbell, G.W.

1996-09-19T23:59:59.000Z

265

Exploratory Studies Facility Subsurface Fire Hazards Analysis  

Science Conference Proceedings (OSTI)

The primary objective of this Fire Hazard Analysis (FHA) is to confirm the requirements for a comprehensive fire and related hazards protection program for the Exploratory Studies Facility (ESF) are sufficient to minimize the potential for: The occurrence of a fire or related event; A fire that causes an unacceptable on-site or off-site release of hazardous or radiological material that will threaten the health and safety of employees, the public or the environment; Vital U.S. Department of Energy (DOE) programs suffering unacceptable interruptions as a result of fire and related hazards; Property losses from a fire and related events exceeding limits established by DOE; and Critical process controls and safety class systems being damaged as a result of a fire and related events.

Richard C. Logan

2002-03-28T23:59:59.000Z

266

Cold Vacuum Drying Facility hazard analysis report  

SciTech Connect

This report describes the methodology used in conducting the Cold Vacuum Drying Facility (CVDF) hazard analysis to support the CVDF phase 2 safety analysis report (SAR), and documents the results. The hazard analysis was performed in accordance with DOE-STD-3009-94, Preparation Guide for US Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports, and implements the requirements of US Department of Energy (DOE) Order 5480.23, Nuclear Safety Analysis Reports.

Krahn, D.E.

1998-02-23T23:59:59.000Z

267

RADIATION HAZARDS ENCOUNTERED IN ARC MELTING THORIUM  

SciTech Connect

A project to provide information on the hazards associated wlth arc melting of Th is described. A general airsampling analysis was made to determine the separation, concentration, and distribution of Th daughter (decay) products throughout arc melting, machining, and forging processes found in a handling facility. The value of well coordinated health physics program is stressed in connection with potential health hazards and personnel protection. Building, equipment, and exhaust ventilation requirements for such a facility are discussed, along wlth special handling methods. (auth)

Lowery, R.R.

1960-11-01T23:59:59.000Z

268

Hazards from radioactive waste in perspective  

SciTech Connect

This paper compares the hazards from wastes from a 1000-MW(e) nuclear power plant to these from wastes from a 1000-MW(e) coal fueled power plant. The latter hazard is much greater than the former. The toxicity and carcinogenity of the chemicals prodcued in coal burning is emphasized. Comparisions are also made with other toxic chemicals and with natural radioactivity. (DLC)

Cohen, B.L.

1979-02-27T23:59:59.000Z

269

Process safety management for highly hazardous chemicals  

Science Conference Proceedings (OSTI)

Purpose of this document is to assist US DOE contractors who work with threshold quantities of highly hazardous chemicals (HHCs), flammable liquids or gases, or explosives in successfully implementing the requirements of OSHA Rule for Process Safety Management of Highly Hazardous Chemicals (29 CFR 1910.119). Purpose of this rule is to prevent releases of HHCs that have the potential to cause catastrophic fires, explosions, or toxic exposures.

NONE

1996-02-01T23:59:59.000Z

270

Hazard Categorization Reduction via Nature of the Process Argument  

Science Conference Proceedings (OSTI)

This paper documents the Hazard Categorization (HC) and Critical Safety Evaluation (CSE) for activities performed using an Inspection Object (IO) in excess of the single parameter subcritical limit of 700 g of U-235. By virtue of exceeding the single parameter subcritical limit and the subsequent potential for criticality, the IO HC is initially categorized as HC2. However, a novel application of the nature of the process argument was employed to reduce the IO HC from HC2 to less than HC3 (LTHC3). The IO is composed of five separate uranium metal plates that total no greater than 3.82 kg of U-235 (U(20)). The IO is planned to be arranged in various configurations. As the IO serves as a standard for experimentation aimed at establishing techniques for detection of fissionable materials, it may be placed in close proximity to various reflectors, moderators, or both. The most reactive configurations of the IO were systematically evaluated and shown that despite the mass of U-235 and potential positioning near various reflectors and moderators, the IO cannot be assembled into a critical configuration. Therefore, the potential for criticality does not exist. With Department of Energy approval, a Hazards Assessment Document with high-level (facility-level) controls on the plates negates the potential for criticality and satisfies the nature of the process argument to reduce the HC from HC2 to LTHC3.

Chelise A. Van De Graaff; Dr. Chad Pope; J. Todd Taylor

2012-05-01T23:59:59.000Z

271

Containment canister for capturing hazardous waste debris during piping modifications  

DOE Patents (OSTI)

The present invention relates to a containment canister for capturing hazardous waste debris during modifications to gloveboxes, or other radiological or biochemical hoods (generally termed gloveboxes therein), that require drilling and welding operations. Examples of such modifications include penetrations for pipe, thermowells, etc. In particular, the present invention relates to an improved containment canister that eliminates the need for costly containment huts and additional man power while at the same time reducing the risk of radiation exposure or other biohazard exposure to workers during glovebox modifications. The present invention also provides an improved hole saw which enables a driller to remove metal shavings and replace the hole saw if there is tooth wear present on the hole saw prior to actually penetrating a glovebox during modifications.

Dozier, Stanley B.

2001-09-30T23:59:59.000Z

272

Evaluation of U.S. Environmental Protection Agency's Arsenic Ambient Water Quality Criteria: Speciation and Bioaccumulation Issues  

Science Conference Proceedings (OSTI)

This report considers the topic of arsenic bioaccumulation and speciation in aquatic organisms as this information pertains to the development of aquatic life criteria for arsenic to protect human health. It presents a summary of laboratory efforts conducted over the last year at the freshwater and marine laboratories involved in this ongoing research project.

2009-11-18T23:59:59.000Z

273

Evaluation of U.S. Environmental Protection Agency's Arsenic Ambient Water Quality Criteria: Speciation and Bioaccumulation Issues  

Science Conference Proceedings (OSTI)

This report considers the topic of arsenic bioaccumulation and speciation in aquatic organisms as this information pertains to the development of aquatic life criteria for arsenic to protect human health. It presents a synopsis of the current state of the science, which is drawn from a review of the published, peer-reviewed scientific research on the subject.

2008-12-17T23:59:59.000Z

274

Hazardous materials in aquatic environments of the Mississippi River Basin. Quarterly project status report, 1 April--30 June 1994  

Science Conference Proceedings (OSTI)

This report contains a cluster of twenty separate project reports concerning the fate, environmental transport, and toxicity of hazardous wastes in the Mississippi River Basin. Some of topics investigated involve: biological uptake and metabolism; heavy metal immobilization; biological indicators; toxicity; and mathematical models.

Not Available

1994-08-01T23:59:59.000Z

275

Light Metals  

Science Conference Proceedings (OSTI)

Alternative processes; Anode design and operation; Cell fundamentals and ... Hot-rolling technologies; Deformation of materials; Primary metal production.

276

Arsenic pilot plant operation and results - Socorro Springs, New Mexico - phase 1.  

Science Conference Proceedings (OSTI)

Sandia National Laboratories (SNL) is conducting pilot scale evaluations of the performance and cost of innovative water treatment technologies aimed at meeting the recently revised arsenic maximum contaminant level (MCL) for drinking water. The standard of 10 {micro}g/L (10 ppb) is effective as of January 2006. The first pilot tests have been conducted in New Mexico where over 90 sites that exceed the new MCL have been identified by the New Mexico Environment Department. The pilot test described in this report was conducted in Socorro New Mexico between January 2005 and July 2005. The pilot demonstration is a project of the Arsenic Water Technology Partnership program, a partnership between the American Water Works Association Research Foundation (AwwaRF), SNL and WERC (A Consortium for Environmental Education and Technology Development). The Sandia National Laboratories pilot demonstration at the Socorro Springs site obtained arsenic removal performance data for five different adsorptive media under constant ambient flow conditions. Well water at Socorro Springs has approximately 42 ppb arsenic in the oxidized (arsenate-As(V)) redox state with moderate amounts of silica, low concentrations of iron and manganese and a slightly alkaline pH (8). The study provides estimates of the capacity (bed volumes until breakthrough at 10 ppb arsenic) of adsorptive media in the same chlorinated water. Near the end of the test the feedwater pH was lowered to assess the affect on bed capacity and as a prelude to a controlled pH study (Socorro Springs Phase 2).

Aragon, Malynda Jo; Everett, Randy L.; Siegel, Malcolm Dean; Kottenstette, Richard Joseph; Holub, William E. Jr; Wright, Jeremy B.; Dwyer, Brian P.

2007-05-01T23:59:59.000Z

277

Rules and Regulations for Hazardous Waste Management (Rhode Island)  

Energy.gov (U.S. Department of Energy (DOE))

These regulations establish permitting and operational requirements for hazardous waste facilities. They are designed to minimize...

278

Training Program EHS 657 ~ Self-Transporting Hazardous Materials...  

NLE Websites -- All DOE Office Websites (Extended Search)

Environment, Health, & Safety Training Program EHS 657 Self-Transporting Hazardous Materials Training Course Syllabus...

279

CHEMICAL WASTE RECYCLING PROGRAM EMPTY CHEMICAL BOTTLES: which include all glass, plastic and metal bottles that  

E-Print Network (OSTI)

CHEMICAL WASTE RECYCLING PROGRAM EMPTY CHEMICAL BOTTLES: which include all glass, plastic and metal bottles that previously contained chemicals (hazardous or non-hazardous) are collected by CWS for recycling. Bottles should be dry and empty without chemical residue. Rinse and collect rinsate in chemical

Ungerleider, Leslie G.

280

Experiment Hazard Class 15.2 - USDA Soil Permit  

NLE Websites -- All DOE Office Websites (Extended Search)

2 - USDA Regulated Soil 2 - USDA Regulated Soil Applicability This hazard classification applies to all experiments involving soils regulated by the United States Department of Agricultute (USDA). Other hazard classifications and their associated hazard controls may also apply to experiments in this hazard class. Experiment Category Experiments involving this hazard class categorized as low risk experiments unless other hazard classes apply. Experiment Hazard Control Verification Statements Engineered Controls - None required. Procedural Controls - All work with regulated soils must be performed in compliance with the APS Protocols for Handling, Storage, and Disposal of Untreated Foreign Soil and Regulated Domestic Soil. The APS protocols state the requirements for handling, storage, shipment, and disposal of regulated

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Reactions of plutonium and uranium with water: Kinetics and potential hazards  

SciTech Connect

The chemistry and kinetics of reactions between water and the metals and hydrides of plutonium and uranium are described in an effort to consolidate information for assessing potential hazards associated with handling and storage. New experimental results and data from literature sources are presented. Kinetic dependencies on pH, salt concentration, temperature and other parameters are reviewed. Corrosion reactions of the metals in near-neutral solutions produce a fine hydridic powder plus hydrogen. The corrosion rate for plutonium in sea water is a thousand-fold faster than for the metal in distilled water and more than a thousand-fold faster than for uranium in sea water. Reaction rates for immersed hydrides of plutonium and uranium are comparable and slower than the corrosion rates for the respective metals. However, uranium trihydride is reported to react violently if a quantity greater than twenty-five grams is rapidly immersed in water. The possibility of a similar autothermic reaction for large quantities of plutonium hydride cannot be excluded. In addition to producing hydrogen, corrosion reactions convert the massive metals into material forms that are readily suspended in water and that are aerosolizable and potentially pyrophoric when dry. Potential hazards associated with criticality, environmental dispersal, spontaneous ignition and explosive gas mixtures are outlined.

Haschke, J.M.

1995-12-01T23:59:59.000Z

282

Method for encapsulating and isolating hazardous cations, medium for encapsulating and isolating hazardous cations  

DOE Patents (OSTI)

A method for encapsulating hazardous cations is provided comprising supplying a pretreated substrate containing the cations; contacting the substrate with an organo-silane compound to form a coating on the substrate; and allowing the coating to cure. A medium for containing hazardous cations is also provided, comprising a substrate having ion-exchange capacity and a silane-containing coating on the substrate.

Wasserman, Stephen R. (Darien, IL); Anderson, Kenneth B. (Lisle, IL); Song, Kang (Woodridge, IL); Yuchs, Steven E. (Naperville, IL); Marshall, Christopher L. (Naperville, IL)

1998-01-01T23:59:59.000Z

283

Design Strategies and Preliminary Prototype for a Low-Cost Arsenic Removal System for Rural Bangladesh  

SciTech Connect

Researchers have invented a material called ARUBA -- Arsenic Removal Using Bottom Ash -- that effectively and affordably removes arsenic from Bangladesh groundwater. Through analysis of studies across a range of disciplines, observations, and informal interviews conducted over three trips to Bangladesh, we have applied mechanical engineering design methodology to develop eight key design strategies, which were used in the development of a low-cost, community-scale water treatment system that uses ARUBA to removearsenic from drinking water. We have constructed, tested, and analysed a scale version of the system. Experiments have shown that the system is capable of reducing high levels of arsenic (nearly 600 ppb) to below the Bangladesh standard of 50 ppb, while remaining affordable to people living on less than US$2/day. The system could be sustainably implemented as a public-private partnership in rural Bangladesh.

Mathieu, Johanna L.; Gadgil, Ashok J.; Kowolik, Kristin; Qazi, Shefah; Agogino, Alice M.

2009-09-14T23:59:59.000Z

284

Metal impacts on microbial biomass in the anoxic sediments of a contaminated lake  

SciTech Connect

Little is known about the long-term impacts of metal contamination on the microbiota of anoxic lake sediments. In this study, we examined microbial biomass and metals (arsenic, cadmium, chromium, copper, iron, lead, manganese, and zinc) in the sediments of Lake DePue, a backwater lake located near a former zinc smelter. Sediment core samples were examined using two independent measures for microbial biomass (total microscopic counts and total phospholipid-phosphate concentrations), and for various fractions of each metal (pore water extracts, sequential extractions, and total extracts of all studied metals and zinc speciation by X-ray absorption fine structure (XAFS). Zinc concentrations were up to 1000 times higher than reported for sediments in the adjacent Illinois River, and ranged from 21,400 mg/kg near the source to 1,680 mg/kg near the river. However, solid metal fractions were not well correlated with pore water concentrations, and were not good predictors of biomass concentrations. Instead, biomass, which varied among sites by as much as two-times, was inversely correlated with concentrations of pore water zinc and arsenic as established by multiple linear regression. Monitoring of other parameters known to naturally influence biomass in sediments (e.g., organic carbon concentrations, nitrogen concentrations, pH, sediment texture, and macrophytes) revealed no differences that could explain observed biomass trends. This study provides strong support for control of microbial abundance by pore water metal concentrations in contaminated freshwater sediments.

Gough, Heidi L.; Dahl, Amy L.; Nolan, Melissa A.; Gaillard, Jean-Francois; Stahl, David A.

2008-04-26T23:59:59.000Z

285

Natural Phenomena Hazards Modeling Project: Seismic Hazard Models for Department of Energy Sites  

Science Conference Proceedings (OSTI)

Lawrence Livermore National Laboratory (LLNL) has developed seismic and wind hazard models for the Office of Nuclear Safety (ONS), Department of Energy (DOE). The work is part of a three-phase effort aimed at establishing uniform building design criteria for seismic and wind hazards at DOE sites throughout the US. In Phase 1, LLNL gathered information on the sites and their critical facilities, including nuclear reactors, fuel-reprocessing plants, high-level waste storage and treatment facilities, and special nuclear material facilities. In Phase 2, development of seismic and wind hazard models, was initiated. These hazard models express the annual probability that the site will experience an earthquake or wind speed greater than some specified magnitude. This report summarizes the final seismic hazard models and response spectra recommended for each site and the methodology used to develop these models. 15 references, 2 figures, 1 table.

Coats, D.W.; Murray, R.C.

1984-11-01T23:59:59.000Z

286

Evidence for a Lifshitz transition in electron-doped iron arsenic superconductors at the onset of superconductivity  

Science Conference Proceedings (OSTI)

The iron arsenic high-temperature superconductors exhibit particularly rich phase diagrams. In the AE(Fe{sub 1-x}T{sub x}){sub 2}As{sub 2} family (known as '122', with AE being Ca, Sr or Ba and T being a transition metal), the simultaneous structural/magnetic phase transition that occurs at elevated temperature in the undoped material splits and is suppressed by carrier doping. A superconducting region appears as likely in the orthorhombic/antiferromagnetic (AFM) state as in the tetragonal/paramagnetic state. An important question then is what determines the critical doping at which superconductivity emerges, as the AFM order is fully suppressed only close to optimal doping. Here we report evidence from angle-resolved photoemission spectroscopy that marked changes in the Fermi surface coincide with the onset of superconductivity in electron-doped Ba(Fe{sub 1-x}Co{sub x}){sub 2}As{sub 2}. The presence of the AFM order leads to a reconstruction of the electronic structure, most significantly the appearance of the petal-like hole pockets at the Fermi level. These hole pockets vanish - that is, undergo a Lifshitz transition - as the cobalt concentration is increased sufficiently to support superconductivity. Superconductivity and magnetism are competing states in this system: when petal-like hole pockets are present, superconductivity is fully suppressed, whereas in their absence the two states can coexist.

Liu, Chang; Kondo, T.; Fernandes, R.M.; Palczewski, Ari D.; Mun, Eun Deok; Ni, Ni; Thaler, Alexander N.; Bostwick, Aaron; Rotenberg, Eli; Schmalian, Jorg; Bud-ko, Sergey L.; Canfield, Paul C.; and Kaminski, A.

2010-05-02T23:59:59.000Z

287

Seismic hazard analysis overview and executive summary  

Science Conference Proceedings (OSTI)

The Site Specific Spectra Project (SSSP) described in this report was a multi-year study funded by the US Nuclear Regulatory Commission (NRC) as part of NRC's Systematic Evaluation Program (SEP). The main objective of this project was to provide assistance to the NRC by developing estimates of the seismic hazard at the nine oldest nuclear power plant sites east of the Rocky Mountains which were included in the SEP. This volume gives brief overview of the SEP and the SSSP including a discussion of the formal elicitation of expert opinion used to obtain a subjective representation of parameters that affect seismic hazard and the development of the seismic hazard at the nine SEP facilities.

Bernreuter, D.L.; Minichino, C.

1982-10-01T23:59:59.000Z

288

Repository Subsurface Preliminary Fire Hazard Analysis  

Science Conference Proceedings (OSTI)

This fire hazard analysis identifies preliminary design and operations features, fire, and explosion hazards, and provides a reasonable basis to establish the design requirements of fire protection systems during development and emplacement phases of the subsurface repository. This document follows the Technical Work Plan (TWP) (CRWMS M&O 2001c) which was prepared in accordance with AP-2.21Q, ''Quality Determinations and Planning for Scientific, Engineering, and Regulatory Compliance Activities''; Attachment 4 of AP-ESH-008, ''Hazards Analysis System''; and AP-3.11Q, ''Technical Reports''. The objective of this report is to establish the requirements that provide for facility nuclear safety and a proper level of personnel safety and property protection from the effects of fire and the adverse effects of fire-extinguishing agents.

Richard C. Logan

2001-07-30T23:59:59.000Z

289

Remote vacuum compaction of compressible hazardous waste  

DOE Patents (OSTI)

A system is described for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer flexible container, breaching the integrity of the first containers, evacuating the air from the inner and outer containers, and sealing the outer container shut.

Coyne, M.J.; Fiscus, G.M.; Sammel, A.G.

1996-12-31T23:59:59.000Z

290

Remote vacuum compaction of compressible hazardous waste  

DOE Patents (OSTI)

A system for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer flexible container, breaching the integrity of the first containers, evacuating the air from the inner and outer containers, and sealing the outer container shut.

Coyne, Martin J. (Pittsburgh, PA); Fiscus, Gregory M. (McMurray, PA); Sammel, Alfred G. (Pittsburgh, PA)

1998-01-01T23:59:59.000Z

291

Remote vacuum compaction of compressible hazardous waste  

DOE Patents (OSTI)

A system is described for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer flexible container, breaching the integrity of the first containers, evacuating the air from the inner and outer containers, and sealing the outer container shut. 8 figs.

Coyne, M.J.; Fiscus, G.M.; Sammel, A.G.

1998-10-06T23:59:59.000Z

292

Occupational hazards associated with geothermal energy  

DOE Green Energy (OSTI)

Exposure to noise, H{sub 2}S, NH/sub 3/, hazardous chemicals and wastes, and heat are the major occupational health hazards associated with geothermal energy development - from drilling to power production. Exposures to these agents, although not unique to geothermal energy development, occur in situations peculiar to the industry. Reports show that occupational illnesses associated with geothermal energy development are increasing, while the corresponding rates from all power production are decreasing. Most of those related to geothermal energy result from the H{sub 2}S-abatement systems used in response to environmental pollution regulations.

Hahn, J.L.

1979-07-20T23:59:59.000Z

293

Hanford Site radioactive hazardous materials packaging directory  

SciTech Connect

The Hanford Site Radioactive Hazardous Materials Packaging Directory (RHMPD) provides information concerning packagings owned or routinely leased by Westinghouse Hanford Company (WHC) for offsite shipments or onsite transfers of hazardous materials. Specific information is provided for selected packagings including the following: general description; approval documents/specifications (Certificates of Compliance and Safety Analysis Reports for Packaging); technical information (drawing numbers and dimensions); approved contents; areas of operation; and general information. Packaging Operations & Development (PO&D) maintains the RHMPD and may be contacted for additional information or assistance in obtaining referenced documentation or assistance concerning packaging selection, availability, and usage.

McCarthy, T.L.

1995-12-01T23:59:59.000Z

294

Robots, systems, and methods for hazard evaluation and visualization  

DOE Patents (OSTI)

A robot includes a hazard sensor, a locomotor, and a system controller. The robot senses a hazard intensity at a location of the robot, moves to a new location in response to the hazard intensity, and autonomously repeats the sensing and moving to determine multiple hazard levels at multiple locations. The robot may also include a communicator to communicate the multiple hazard levels to a remote controller. The remote controller includes a communicator for sending user commands to the robot and receiving the hazard levels from the robot. A graphical user interface displays an environment map of the environment proximate the robot and a scale for indicating a hazard intensity. A hazard indicator corresponds to a robot position in the environment map and graphically indicates the hazard intensity at the robot position relative to the scale.

Nielsen, Curtis W.; Bruemmer, David J.; Walton, Miles C.; Hartley, Robert S.; Gertman, David I.; Kinoshita, Robert A.; Whetten, Jonathan

2013-01-15T23:59:59.000Z

295

Homogeneous and Heterogeneous Reaction and Transformation of Hg and Trace Metals in Combustion Systems  

SciTech Connect

The overall goal of this project was to produce a working dynamic model to predict the transformation and partitioning of trace metals resulting from combustion of a broad range of fuels. The information provided from this model will be instrumental in efforts to identify fuels and conditions that can be varied to reduce metal emissions. Through the course of this project, it was determined that mercury (Hg) and arsenic (As) would be the focus of the experimental investigation. Experiments were therefore conducted to examine homogeneous and heterogeneous mercury oxidation pathways, and to assess potential interactions between arsenic and calcium. As described in this report, results indicated that the role of SO{sub 2} on Hg oxidation was complex and depended upon overall gas phase chemistry, that iron oxide (hematite) particles contributed directly to heterogeneous Hg oxidation, and that As-Ca interactions occurred through both gas-solid and within-char reaction pathways. Modeling based on this study indicated that, depending upon coal type and fly ash particle size, vaporization-condensation, vaporization-surface reaction, and As-CaO in-char reaction all play a role in arsenic transformations under combustion conditions.

J. Helble; Clara Smith; David Miller

2009-08-31T23:59:59.000Z

296

In situ chemical fixation of arsenic-contaminated soils: Anexperimental study  

Science Conference Proceedings (OSTI)

This paper reports the results of an experimentalstudytesting a low-cost in situ chemical fixation method designed to reclaimarsenic-contaminated subsurface soils. Subsurface soils from severalindustrial sites in southeastern U.S. were contaminated with arsenicthrough heavy application of herbicide containing arsenic trioxide. Themean concentrations of environmentally available arsenic in soilscollected from the two study sites, FW and BH, are 325 mg/kg and 900mg/kg, respectively. The soils are sandy loams with varying mineralogicaland organic contents. The previous study [Yang L, Donahoe RJ. The form,distribution and mobility of arsenic in soils contaminated by arsenictrioxide, at sites in Southeast USA. Appl Geochem 2007;22:320 341]indicated that a large portion of the arsenic in both soils is associatedwith amorphous aluminum and iron oxyhydroxides and shows very slowrelease against leaching by synthetic precipitation. The soil's amorphousaluminum and iron oxyhydroxides content was found to have the mostsignificant effect on its ability to retain arsenic.Based on thisobservation, contaminated soils were reacted with different treatmentsolutions in an effort to promote the formation of insolublearsenic-bearing phases and thereby decrease the leachability of arsenic.Ferrous sulfate, potassium permanganate and calcium carbonate were usedas the reagents for the chemical fixation solutions evaluated in threesets of batch experiments: (1) FeSO4; (2) FeSO4 and KMnO4; (3) FeSO4,KMnO4 and CaCO3. The optimum treatment solutions for each soil wereidentified based on the mobility of arsenic during sequential leaching oftreated and untreated soils using the fluids described in EPA Method 1311[USEPA. Method 1311: toxicity characteristic leaching procedure. Testmethods for evaluating solid waste, physical/chemical methods. 3rd ed.Washington, DC: U.S. Environmental Protection Agency, Office of SolidWaste. U.S. Government Printing Office; 1992]toxic characteristicsleaching procedure (TCLP) and EPA Method 1312 [USEPA.Method 1312:synthetic precipitation leaching procedure. Test methods for evaluatingsolid waste, physical/chemical methods. 3rd ed. Washington, DC: U.S.Environmental Protection Agency, Office of Solid Waste. U.S. GovernmentPrinting Office; 1994]synthetic precipitation leaching procedure(SPLP).Both FW and BH soils showed significant decreases in arsenicleachability for all three treatment solutions, compared to untreatedsoil. While soils treated with solution (3) showed the best results withsubsequent TCLP sequential leaching, SPLP sequential leaching of treatedsoils indicated that lowest arsenic mobility was obtained using treatmentsolution (1). Treatment solution (1) with only FeSO4 is considered thebest choice for remediation of arsenic-contaminated soil because SPLPsequential leaching better simulates natural weathering. Analysis oftreated soils produced no evidence of newly-formed arsenic-bearing phasesin either soil after treatment. Sequential chemical extractions oftreated soils indicate that surface complexation of arsenic on ferrichydroxide is the major mechanism for the fixation process.

Yang, Li; Donahoe, Rona J.; Redwine, James C.

2007-03-27T23:59:59.000Z

297

Precious Metals  

Science Conference Proceedings (OSTI)

"Advances in the Extractive Metallurgy of Selected Rare and Precious Metals" ( 1991 Review of Extractive Metallurgy), J.E. Hoffmann, April 1991, pp. 18-23.

298

Montana Hazardous Waste Act (Montana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Montana Hazardous Waste Act (Montana) Montana Hazardous Waste Act (Montana) Montana Hazardous Waste Act (Montana) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Rural Electric Cooperative Tribal Government Institutional Program Info State Montana Program Type Siting and Permitting Provider Montana Department of Environmental Quality This Act addresses the safe and proper management of hazardous wastes and used oil, the permitting of hazardous waste facilities, and the siting of facilities. The Department of Environmental Quality is authorized to enact regulations pertaining to all aspects of hazardous waste storage and disposal, and the Act addresses permitting requirements for disposal

299

Study on Double-Layered Pellet Roasting of Sulfur & Arsenic ...  

Science Conference Proceedings (OSTI)

Chemical Enrichment of Precious Metals in Iron Sulfides Using Microwave Energy Chloridizing ... Co-Gasification Behavior of Metallurgical Coke with High and Low Reactivity .... Thermal Plasma Torches for Metallurgical Applications.

300

Preliminary Hazards Analysis Plasma Hearth Process  

SciTech Connect

This Preliminary Hazards Analysis (PHA) for the Plasma Hearth Process (PHP) follows the requirements of United States Department of Energy (DOE) Order 5480.23 (DOE, 1992a), DOE Order 5480.21 (DOE, 1991d), DOE Order 5480.22 (DOE, 1992c), DOE Order 5481.1B (DOE, 1986), and the guidance provided in DOE Standards DOE-STD-1027-92 (DOE, 1992b). Consideration is given to ft proposed regulations published as 10 CFR 830 (DOE, 1993) and DOE Safety Guide SG 830.110 (DOE, 1992b). The purpose of performing a PRA is to establish an initial hazard categorization for a DOE nuclear facility and to identify those processes and structures which may have an impact on or be important to safety. The PHA is typically performed during and provides input to project conceptual design. The PRA then is followed by a Preliminary Safety Analysis Report (PSAR) performed during Title I and II design. This PSAR then leads to performance of the Final Safety Analysis Report performed during construction, testing, and acceptance and completed before routine operation. Radiological assessments indicate that a PHP facility, depending on the radioactive material inventory, may be an exempt, Category 3, or Category 2 facility. The calculated impacts would result in no significant impact to offsite personnel or the environment. Hazardous material assessments indicate that a PHP facility will be a Low Hazard facility having no significant impacts either onsite or offsite to personnel and the environment.

Aycock, M.; Coordes, D.; Russell, J.; TenBrook, W.; Yimbo, P. [Science Applications International Corp., Pleasanton, CA (United States)] [Science Applications International Corp., Pleasanton, CA (United States)

1993-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Hazard Evaluation for 244-CR Vault  

SciTech Connect

This document presents the results of a hazards identification and evaluation performed on the 244-CR Vault to close a USQ (USQ No.TF-98-0785, Potential Inadequacy in Authorization Basis (PIAB): To Evaluate Miscellaneous Facilities Listed In HNF-2503 And Not Addressed In The TWRS Authorization Basis) that was generated as part of an evaluation of inactive TWRS facilities.

GRAMS, W.H.

1999-08-19T23:59:59.000Z

302

Large hazardous floods as translatory waves  

Science Conference Proceedings (OSTI)

The theory for non-stationary flow in translatory waves is developed for an inclined plane in a prismatic channel and a funneling channel. The existence of translatory waves traveling over dry land or superimposed on constant flow is established, and ... Keywords: Flood hazard, Flow simulation, Jokulhlaup, Translatory waves

Jonas Elasson; Snorri Pall Kjaran; Sigurdur Larus Holm; Magnus Tumi Gudmundsson; Gudrun Larsen

2007-10-01T23:59:59.000Z

303

Effects of rainbow trout fry of a metals-contaminated diet of benthic invertebrates from the Clark Fork River, Montana  

Science Conference Proceedings (OSTI)

The upper Clark Fork River in northwestern Montana has received mining wastes from the Butte and Anaconda areas since 1880. These wastes have contaminated areas of the river bed and floodplain with tailings and heavy metal sludge, resulting in elevated concentration of metals in surface water, sediments, and biota. Rainbow trout Oncorhynchus mykiss were exposed immediately after hatching for 91 d to cadmium, copper, lead, and zinc in water at concentrations simulating those in Clark Fork River. From exogenous feeding (21 d posthatch) through 91 d, fry were also fed benthic invertebrates from the Clark Fork River that contained elevated concentrations of arsenic, cadmium, copper, and lead. Evaluations of different combinations of diet and water exposure indicated diet-borne metals were more important than water-borne metals - at the concentrations we tested - in reducing survival and growth of rainbow trout. Whole-body metal concentrations ([mu]g/g, wet weight) at 91 d in fish fed Clark Fork invertebrates without exposure to Clark Fork water were arsenic, 1.4; cadmium, 0.16; and copper, 6.7. These were similar to concentrations found in Clark Fork River fishes. Livers from fish on the high-metals diets exhibited degenerative changes and generally lacked glycogen vacuolation. Indigenous Clark Fork River invertebrates provide a concentrated source of metals for accumulation into young fishes, and probably were the cause of decreased survival and growth of age-0 rainbow trout in our laboratory exposures. 30 refs., 8 figs., 4 tabs.

Woodward, D.F. (National Fisheries Contaminant Research Center, Jackson, WY (United States)); Brumbaugh, W.G.; DeLonay, A.J.; Little, E.E. (National Fisheries Contaminant Research Center, Columbia, MO (United States)); Smith, C.E. (Bozeman Fish Technology Center, MT (United States))

1994-01-01T23:59:59.000Z

304

In-situ Solidification/Stabilization of Arsenic-Contaminated Soils  

Science Conference Proceedings (OSTI)

Arsenic contamination exists at a variety of utility sites, and remediation will be necessary at some of those sites. However, utilities need reliable, cost-effective remedial methods they can match to site geology. This report presents demonstration results of one remedial method.

1997-03-04T23:59:59.000Z

305

Start | Author Index 742-2 Kinetics of Arsenic Transformations in the Soil Environment.  

E-Print Network (OSTI)

Start | Author Index 742-2 Kinetics of Arsenic Transformations in the Soil Environment. Wednesday of Delaware, 152 Townsend Hall, Center for Critical Zone Research, Dept. of Plant and Soil Sciences, Newark, DE 19716 and Donald L. Sparks, Department of Plant and Soil Sciences and the Center for Critical Zone

Sparks, Donald L.

306

Physical Aging of Arsenic Trisulfide Thick Films and Bulk Materials Rong-Ping Wang,w  

E-Print Network (OSTI)

Physical Aging of Arsenic Trisulfide Thick Films and Bulk Materials Rong-Ping Wang,w Andrei Rode referred to as a physical aging phenomenon.7,8 To avoid the changes in physical properties caused by physical aging, a material with completely saturated aging should be used in chalcogenide-based devices

Chen, Ying

307

Natural Arsenic in Groundwater and Alkaline Lakes at the upper Paraguay basin, Pantanal, Brazil  

E-Print Network (OSTI)

Natural Arsenic in Groundwater and Alkaline Lakes at the upper Paraguay basin, Pantanal, Brazil L, Brazil d Université de Provence, Aix Marseille 1, France e Departamento de Geografia, Universidade Federal do Mato Grosso do Sul, Três Lagoas, Brazil f Laboratoire de Géomophologie Appliquée, Université de

Paris-Sud XI, Université de

308

Speciation and Attenuation of Arsenic and Selenium at Coal Combustion By-Product Management Facilities  

Science Conference Proceedings (OSTI)

The overall objective of this project was to evaluate the impact of key constituents captured from power plant air streams (principally arsenic and selenium) on the disposal and utilization of coal combustion products (CCPs). Specific objectives of the project were: (1) to develop a comprehensive database of field leachate concentrations at a wide range of CCP management sites, including speciation of arsenic and selenium, and low-detection limit analyses for mercury; (2) to perform detailed evaluations of the release and attenuation of arsenic species at three CCP sites; and (3) to perform detailed evaluations of the release and attenuation of selenium species at three CCP sites. Each of these objectives was accomplished using a combination of field sampling and laboratory analysis and experimentation. All of the methods used and results obtained are contained in this report. For ease of use, the report is subdivided into three parts. Volume 1 contains methods and results for the field leachate characterization. Volume 2 contains methods and results for arsenic adsorption. Volume 3 contains methods and results for selenium adsorption.

K. Ladwig

2005-12-31T23:59:59.000Z

309

Structural Organization of Arsenic Selenide Liquids: New Results from Liquid State NMR  

E-Print Network (OSTI)

Structural Organization of Arsenic Selenide Liquids: New Results from Liquid State NMR Carsten obtained from high­temperature 77 Se NMR studies of molten samples. In materials having As contents simulations. At high temperatures (1.5?melting Temperature), only a single averaged 77 Se NMR signal

Rosenhahn, Bodo

310

Structural Organization of Arsenic Selenide Liquids: New Results from Liquid State NMR  

E-Print Network (OSTI)

Structural Organization of Arsenic Selenide Liquids: New Results from Liquid State NMR Carsten obtained from high-temperature 77 Se NMR studies of molten samples. In materials having As contents simulations. At high temperatures (1.5melting Temperature), only a single averaged 77 Se NMR signal

311

Transformation of 2-line ferrihydrite and its effect on arsenic adsorption  

E-Print Network (OSTI)

Although the impacts of foreign species on aqueous transformations and arsenic adsorption by 2-line ferrihydrite (FH2) have been extensively studied, much less is known about the impact of transformation inhibitors on solid-state transformation of FH2 and arsenic adsorption. In this study, the influence of inhibitors (Si(IV), Mg(II), Al(III), Ti(IV), and Ci(citrate)), aging time, and heat treatment on FH2 transformation and arsenic adsorption was investigated. The FH2s were synthesized by mixing Fe(III) salts with an inhibitor at pH 7.5 and air drying for 2 d. With increases in Al/Fe molar ratio, FH2, poorly crystalline Al hydroxide, gibbsite, and bayerite were formed in the FH2-Al series, whereas FH2 was formed in the other FH2s. Heat treatment had a more considerable impact on the transformation, structure, and PZC of FH2 than aging at RT for 235 d. Upon heating the FH2s at 360 oC, most of the amorphous Fe oxide was transformed into hematite, whereas Si and Al had stronger retarding effects on transformation than the other inhibitors. Hematite and FH2 were identified with increases in Si/Fe molar ratio, whereas with increasing Al/Fe molar ratio, FH2 remained, gibbsite and bayerite were decomposed, and boehmite appeared as a trace component. However, the effect of Si was much more pronounced than that of Al in retarding the transformation. The adsorption density for As(III) on the FH2s (at pH 7) decreased in the order: FH2-Mg-2 > FH2 > FH2-Al-1, whereas As(V) followed the order: FH2-Al-1 > FH2-Mg-2 > FH2. Compared to aging at RT for 235 d, heat treatment at 360 oC resulted in significantly reduced arsenic adsorption. The heated FH2 showed a smaller adsorption capacity for arsenic compare to that of the other FH2s. In contrast, the heated FH2-Al and FH2-Si series showed much higher adsorption capacities for As(V) than any other FH2, whereas the heated FH2-Mg series exhibited the largest adsorption capacity of As(III) among the heated FH2s. It is concluded that the use of the FH2-Al, FH2-Mg, or FH2-Si series instead of pure FH2 as filter media in water treatment might achieve more efficient arsenic removal and enhance arsenic retention at waste-disposal sites.

Her, Namryong

2007-08-01T23:59:59.000Z

312

Experiment Hazard Class 4.3b - Class 3b Lasers  

NLE Websites -- All DOE Office Websites (Extended Search)

b - Use of Class 3b Lasers Applicability This hazard classification applies to all experiments involving class 3b lasers. Other hazard classifications and their associated hazard...

313

Experiment Hazard Class 4.3a -Class 3a Lasers  

NLE Websites -- All DOE Office Websites (Extended Search)

- Use of Class 3a Lasers Applicability This hazard classification applies to all experiments involving class 3a lasers. Other hazard classifications and their associated hazard...

314

Microsoft Word - 3.1.Hazards,_Equipment,_and_Authorizations_Review...  

NLE Websites -- All DOE Office Websites (Extended Search)

experimentoperation requires: Formal authorizations as listed below. Task-Based Job Hazards Analysis. Inclusion of hazards and controls in GroupIndividual Job Hazards...

315

Hazard Communications Training Deadline Approaches | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazard Communications Training Deadline Approaches Hazard Communications Training Deadline Approaches Hazard Communications Training Deadline Approaches November 1, 2013 - 8:45am Addthis Hazard Communications Training Deadline Approaches 10 CFR 851, Worker Safety and Health Program, requires all DOE Federal and contractor employees with hazardous chemicals in their workplaces to complete new Hazard Communication Standard Training. The major changes to the standard include hazard classification, labeling, Safety Data Sheets, information and training. In order to assist you with meeting this deadline, training materials can be found at: http://orise.orau.gov/ihos/hottopics/training.htm; or http://efcog.org/wg/esh_cslm/index.htm The Hazard Communication Standard can be found at: https://www.osha.gov/dsg/hazcom/ghs-final-rule.html

316

A Minimum Assumption Tornado-Hazard Probability Model  

Science Conference Proceedings (OSTI)

One of the principle applications of climatological tornado data is in tornado-hazard assessment. To perform such a hazard-potential determination, historical tornado characteristics in either a regional or tom area are complied. A model is then ...

Joseph T. Schaefer; Donald L. Kelly; Robert F. Abbey

1986-12-01T23:59:59.000Z

317

Feasibility Study of Radiometry for Airborne Detection of Aviation Hazards  

Science Conference Proceedings (OSTI)

Radiometric sensors for aviation hazards have the potential for widespread and inexpensive deployment on aircraft. This report contains discussions of three aviation hazards - icing, turbulence, and volcanic ash - as well as candidate radiometric detection ...

Gimmestad Gary G.; Papanicolopoulos Chris D.; Richards Mark A.; Sherman Donald L.; West Leanne L.

2001-06-01T23:59:59.000Z

318

Audit Report on "Hanford Site Radiation and Hazardous Waste Training...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

in radiation andor hazardous waste that was not required. Audit Report on "Hanford Site Radiation and Hazardous Waste Training", WR-B-00-06 More Documents & Publications Audit...

319

Transportation of RCRA hazardous wastes. RCRA Information Brief  

Science Conference Proceedings (OSTI)

The Resource Conservation and Recovery Act (RCRA) and the Hazardous Materials Transportation Act (HMTA) regulate the transport of hazardous wastes. Under these statutes, specific pretransport regulatory requirements must be met by DOE before the shipment of hazardous wastes, including radioactive mixed wastes. The pretransport requirements are designed to help reduce the risk of loss, leakage, or exposure during shipment of hazardous materials and to communicate information on potential hazards posed by the hazardous material in transport. These goals are accomplished through the tracking of shipments, correctly packaging and labeling containers, and communicating potential hazards. Specific requirements include manifesting, packaging, marking and labeling waste packages; placarding transport vehicles; choosing appropriate waste transporters and shipment destinations; and record keeping and reporting. This information Brief focuses primarily on the transporter requirements both for transportation within a DOE facility and using a commercial transporter to transport RCRA hazardous wastes off-site.

Not Available

1994-04-01T23:59:59.000Z

320

Lidar-based Hazard Avoidance for Safe Landing on Mars  

E-Print Network (OSTI)

Hazard avoidance is a key technology for landing large payloads safely on the surface of Mars. During hazard avoidance a lander uses onboard sensors to detect hazards in the landing zone, autonomously selects a safe landing site, and then maneuvers to the new site. Design of a system for hazard avoidance is facilitated by simulation where trades involving sensor and mission requirements can be explored. This paper describes the algorithms and models that comprise a scanning lidarbased hazard avoidance simulation including a terrain generator, a lidar model, hazard avoidance algorithms and powered landing guidance algorithms. Preliminary simulation results show that the proposed hazard avoidance algorithms are effective at detecting hazards and guiding the lander to a safe landing site. 1

Andrew Johnson; James Collier; Aron Wolf

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

SALTSTONE BATCH 0 TCLP RCRA METAL RESULTS  

Science Conference Proceedings (OSTI)

A saltstone waste form was prepared in the Savannah River National Laboratory from a Tank 50H sample and Z-Area premix material. After the prescribed 28 day cure, samples of the saltstone were collected, and the waste form was shown to meet the South Carolina Hazardous Waste Management Regulations (SCHWMR) R.61-79.261.24 requirements for a nonhazardous waste form with respect to RCRA metals. These analyses met all quality assurance specifications of USEPA SW-846.

Cozzi, A

2007-06-14T23:59:59.000Z

322

Permit Fees for Hazardous Waste Material Management (Connecticut...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Waste Material Management (Connecticut) Permit Fees for Hazardous Waste Material Management (Connecticut) Eligibility Agricultural Commercial Construction Fed. Government...

323

NIST Tests Underscore Potential Hazards of Green Laser ...  

Science Conference Proceedings (OSTI)

NIST Tests Underscore Potential Hazards of Green Laser Pointers. ... Green lasers generate green light from infrared light. ...

2013-03-20T23:59:59.000Z

324

340 Waste handling Facility Hazard Categorization and Safety Analysis  

DOE Green Energy (OSTI)

The analysis presented in this document provides the basis for categorizing the facility as less than Hazard Category 3.

T. J. Rodovsky

2010-10-25T23:59:59.000Z

325

Hazards assessment for the Waste Experimental Reduction Facility  

Science Conference Proceedings (OSTI)

This report documents the hazards assessment for the Waste Experimental Reduction Facility (WERF) located at the Idaho National Engineering Laboratory, which is operated by EG&G Idaho, Inc., for the US Department of Energy (DOE). The hazards assessment was performed to ensure that this facility complies with DOE and company requirements pertaining to emergency planning and preparedness for operational emergencies. DOE Order 5500.3A requires that a facility-specific hazards assessment be performed to provide the technical basis for facility emergency planning efforts. This hazards assessment was conducted in accordance with DOE Headquarters and DOE Idaho Operations Office (DOE-ID) guidance to comply with DOE Order 5500.3A. The hazards assessment identifies and analyzes hazards that are significant enough to warrant consideration in a facility`s operational emergency management program. This hazards assessment describes the WERF, the area surrounding WERF, associated buildings and structures at WERF, and the processes performed at WERF. All radiological and nonradiological hazardous materials stored, used, or produced at WERF were identified and screened. Even though the screening process indicated that the hazardous materials could be screened from further analysis because the inventory of radiological and nonradiological hazardous materials were below the screening thresholds specified by DOE and DOE-ID guidance for DOE Order 5500.3A, the nonradiological hazardous materials were analyzed further because it was felt that the nonradiological hazardous material screening thresholds were too high.

Calley, M.B.; Jones, J.L. Jr.

1994-09-19T23:59:59.000Z

326

Mapping future hazards for south east London Dr Stephen Blenkinsop  

E-Print Network (OSTI)

) Vulnerability information Risk maps #12;Heat Outputs · 5km heat wave prediction grids. · 1km pro-rata disaggregated temperature & heat wave projection grids. · 1km relative heat wave hazard grid combining heat wave hazard (relative). · 200m heat wave risk grids combining relative heat wave hazard with predictions

Wirosoetisno, Djoko

327

Hazard-free self-timed design: methodology and application  

Science Conference Proceedings (OSTI)

This paper introduces an original methodology for hazard-free self-timed design, assuming the worst conditions for robustness. Hazards are classified under three types. Equation hazards are eliminated by an optimal covering. A new variable, labeled state-trajectory ...

Eric Senn; P. Perona

2000-08-01T23:59:59.000Z

328

Uranium Metal Analysis via Selective Dissolution  

DOE Green Energy (OSTI)

Uranium metal, which is present in sludge held in the Hanford Site K West Basin, can create hazardous hydrogen atmospheres during sludge handling, immobilization, or subsequent transport and storage operations by its oxidation/corrosion in water. A thorough knowledge of the uranium metal concentration in sludge therefore is essential to successful sludge management and waste process design. The goal of this work was to establish a rapid routine analytical method to determine uranium metal concentrations as low as 0.03 wt% in sludge even in the presence of up to 1000-fold higher total uranium concentrations (i.e., up to 30 wt% and more uranium) for samples to be taken during the upcoming sludge characterization campaign and in future analyses for sludge handling and processing. This report describes the experiments and results obtained in developing the selective dissolution technique to determine uranium metal concentration in K Basin sludge.

Delegard, Calvin H.; Sinkov, Sergey I.; Schmidt, Andrew J.; Chenault, Jeffrey W.

2008-09-10T23:59:59.000Z

329

Arsenic trioxide-mediated growth inhibition in gallbladder carcinoma cells via down-regulation of Cyclin D1 transcription mediated by Sp1 transcription factor  

SciTech Connect

Gallbladder carcinoma (GBC), an aggressive and mostly lethal malignancy, is known to be resistant to a number of drug stimuli. Here, we demonstrated that arsenic trioxide inhibited the proliferation of gallbladder carcinoma in vivo and in vitro as well as the transcription of cell cycle-related protein Cyclin D1. And, Cyclin D1 overexpression inhibited the negative role of arsenic trioxide in cell cycle progression. We further explored the mechanisms by which arsenic trioxide affected Cyclin D1 transcription and found that the Sp1 transcription factor was down-regulated by arsenic trioxide, with a corresponding decrease in Cyclin D1 promoter activity. Taken together, these results suggested that arsenic trioxide inhibited gallbladder carcinoma cell proliferation via down-regulation of Cyclin D1 transcription in a Sp1-dependent manner, which provided a new mechanism of arsenic trioxide-involved cell proliferation and may have important therapeutic implications in gallbladder carcinoma patients.

Ai, Zhilong [Zhongshan Hospital, Fudan University, Shanghai 200032 (China); Lu, Weiqi [Zhongshan Hospital, Fudan University, Shanghai 200032 (China); Ton, Saixiong [Zhongshan Hospital, Fudan University, Shanghai 200032 (China); Liu, Houbao [Zhongshan Hospital, Fudan University, Shanghai 200032 (China); Sou, Tao [Zhongshan Hospital, Fudan University, Shanghai 200032 (China); Shen, Zhenbin [Zhongshan Hospital, Fudan University, Shanghai 200032 (China); Qin, Xinyu [Zhongshan Hospital, Fudan University, Shanghai 200032 (China)]. E-mail: smc_jjh@yahoo.com.cn

2007-08-31T23:59:59.000Z

330

Arsenic speciation and transport associated with the release of spent geothermal fluids in Mutnovsky field (Kamchatka, Russia)  

Science Conference Proceedings (OSTI)

The use of geothermal fluids for the production of electricity poses a risk of contaminating surface waters when spent fluids are discharged into (near) surface environments. Arsenic (As) in particular is a common component in geothermal fluids and leads to a degradation of water quality when present in mobile and bioavailable forms. We have examined changes in arsenic speciation caused by quick transition from high temperature reducing conditions to surface conditions, retention mechanisms, and the extent of transport associated with the release of spent geothermal fluids at the Dachny geothermal fields (Mutnovsky geothermal region), Kamchatka, Russia -- a high temperature field used for electricity production. In the spent fluids, the arsenic concentration reaches 9 ppm, while in natural hot springs expressed in the vicinity of the field, the As concentration is typically below 10 ppb. The aqueous phase arsenic speciation was determined using Liquid Chromatography (LC) coupled to an Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The arsenic speciation in the bottom sediments (geothermal source fluids is predominantly found as As(III), while a mixture of As(III)/As(V) is found in the water and sediment of the Falshivaia River downstream from the power plant. The extent of elevated arsenic concentrations in water is limited by adsorption to the bottom sediment and dilution, as determined using Cl{sup -} from the deep well fluids as a tracer. Analysis of the Extended X-ray Absorption Fine Structure (EXAFS) spectra shows that sediment phase arsenic is associated with both Al- and Fe-rich phases with a bi-dentate corner sharing local geometry. The geothermal waste fluids released in the surface water create a localized area of arsenic contamination. The extent of transport of dissolved As is limited to {approx}7 km downstream from the source, while As associated with bottom sediment travels {approx}3 km farther.

Ilgen, Anastasia G.; Rychagov, Sergey N.; Trainor, Thomas P. (Alaska Fairbanks); (Russ. Acad. Sci.)

2011-09-20T23:59:59.000Z

331

Experiment Hazard Class 2 - Cryogenic Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

2 - Cryogenic Systems 2 - Cryogenic Systems Applicability This hazard classification applies to all experiments involving the use of cryogenic systems. Experiment Hazard Control Verification Statements General requirements The use of detectors/alarms, warning signs, and adequate ventilation are recommended for areas where release of a cryogen can result in an oxygen-deficient atmosphere. Cryogenic systems and vessels are always insulated to reduce heat exchange and are labeled with the common name of the cryogen. Cryogenic systems are pressure protected and equipment are insptected and maintained. The use of flammable cryogens requires technical consultation. Initial consultation may be obtained from the divisional ESH Coordinator. A written emergency evacuation response plan must be available

332

Hazard Analysis Reports for Nuclear Explosive Operations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NA-STD-3016-2006 NA-STD-3016-2006 May 2006 DOE LIMITED STANDARD HAZARD ANALYSIS REPORTS FOR NUCLEAR EXPLOSIVE OPERATIONS U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE ii Available on the Department of Energy Technical Standards Program web site at http://www.eh.doe.gov/techstds/ DOE-NA-STD-3016-2006 iii FORWARD This Department of Energy (DOE)/National Nuclear Security Administration (NNSA) technical standard is approved for use by the Assistant Deputy Administrator for Military Application and Stockpile Operations (NA-12), and is available for use to prepare Nuclear Explosive Operation (NEO) Hazard Analysis Reports (HARs) as required by 10 CFR 830, "Nuclear Safety Management." This Standard is

333

Identifying Lawn and Garden Tool Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Root Out Lawn and Garden Tool Hazards Root Out Lawn and Garden Tool Hazards For many Americans, working outdoors on the lawn and in the garden is a great way to exercise and relax. However, safety experts warn that, if caution is not employed with lawn and garden tools, you could wind up spending more time indoors, starting with a trip to a hospital emergency room. "The most frequent injuries are from lawn mowers, which are unforgiving machines," cautions John Drengenberg, manager of Consumer Affairs for Underwriters Laboratories Inc., Northbrook, Ill., a not-for-profit product safety testing organization. "Statistics tell us that each year lawn mower accidents send close to 85,000 people to emergency rooms. But that's not all. Nearly 15,000 others need medical treatment for injuries from trimmers and other power garden

334

Memorandum on Chemical Reactors and Reactor Hazards  

SciTech Connect

Two important problems in the investigation of reactor hazards are the chemical reactivity of various materials employed in reactor construction and the chracteristics of heat transfer under transient conditions, specifically heat transfer when driven by an exponentially increasing heat source (exp t/T). Although these problems are independent of each other, when studied in relation to reactor hazards they may occur in a closely coupled sequence. For example the onset of a dangerous chemical reactor may be due to structural failure of various reactor components under an exponentially rising heat source originating with a runaway nuclear reactor. For this reason, these two problems should eventually be studied together after an exploratory experimental survey has been made in which they are considered separately.

Mills, M.M.; Pearlman, H.; Ruebsamen, W.; Steele, G., Chrisney, J.

1951-07-05T23:59:59.000Z

335

Shedding a new light on hazardous waste  

DOE Green Energy (OSTI)

The sun's ability to detoxify waterborne chemicals has long been known; polluted streams, for example, become cleaner as they flow through sunlit areas. Solar detoxification harnesses this natural degradation process for beneficial ends, producing simple, nonhazardous substances from hazardous organic chemicals. Solar detoxification systems now being developed break down these chemicals without using the fossil fuels required by conventional technologies. Sunlight destroys hazardous waste because of the distinctive properties of photons, the packets of energy that make up sunlight. Low-energy photons add thermal energy that will heat toxic chemicals; high-energy photons add the energy needed to break the chemical bonds of these chemicals. The detoxification process discussed here takes advantage of this latter group of photons found in the ultraviolet portion of the solar spectrum. 4 figs.

Reece, N.

1991-02-01T23:59:59.000Z

336

Hazardous Solvent Substitution Data System tutorial  

SciTech Connect

This manual is the tutorial for the Hazardous Solvent Substitution Data System (HSSDS), an online, comprehensive system of information on alternatives to hazardous solvents and related subjects. The HSSDS data base contains product information, material safety data sheets, toxicity reports, usage reports, biodegradable data, product chemical element lists, and background information on solvents. HSSDS use TOPIC{reg_sign} to search for information based on a query defined by the user. TOPIC provides a full text retrieval of unstructured source documents. In this tutorial, a series of lessons is provided that guides the user through basic steps common to most queries performed with HSSDS. Instructions are provided for both window-based and character-based applications.

Twitchell, K.E.; Skinner, N.L.

1993-07-01T23:59:59.000Z

337

Vitrification of hazardous and radioactive wastes  

SciTech Connect

Vitrification offers many attractive waste stabilization options. Versatility of waste compositions, as well as the inherent durability of a glass waste form, have made vitrification the treatment of choice for high-level radioactive wastes. Adapting the technology to other hazardous and radioactive waste streams will provide an environmentally acceptable solution to many of the waste challenges that face the public today. This document reviews various types and technologies involved in vitrification.

Bickford, D.F.; Schumacher, R.

1995-12-31T23:59:59.000Z

338

WHC natural phenomena hazards mitigation implementation plan  

SciTech Connect

Natural phenomena hazards (NPH) are unexpected acts of nature which pose a threat or danger to workers, the public or to the environment. Earthquakes, extreme winds (hurricane and tornado),snow, flooding, volcanic ashfall, and lightning strike are examples of NPH at Hanford. It is the policy of U.S. Department of Energy (DOE) to design, construct and operate DOE facilitiesso that workers, the public and the environment are protected from NPH and other hazards. During 1993 DOE, Richland Operations Office (RL) transmitted DOE Order 5480.28, ``Natural Phenomena Hazards Mitigation,`` to Westinghouse Hanford COmpany (WHC) for compliance. The Order includes rigorous new NPH criteria for the design of new DOE facilities as well as for the evaluation and upgrade of existing DOE facilities. In 1995 DOE issued Order 420.1, ``Facility Safety`` which contains the same NPH requirements and invokes the same applicable standards as Order 5480.28. It will supersede Order 5480.28 when an in-force date for Order 420.1 is established through contract revision. Activities will be planned and accomplished in four phases: Mobilization; Prioritization; Evaluation; and Upgrade. The basis for the graded approach is the designation of facilities/structures into one of five performance categories based upon safety function, mission and cost. This Implementation Plan develops the program for the Prioritization Phase, as well as an overall strategy for the implemention of DOE Order 5480.2B.

Conrads, T.J.

1996-09-11T23:59:59.000Z

339

Effects of residues from municipal solid waste landfill on corn yield and heavy metal content  

Science Conference Proceedings (OSTI)

The effects of residues from municipal solid waste landfill, Khon Kaen Municipality, Thailand, on corn (Zea mays L.) yield and heavy metal content were studied. Field experiments with randomized complete block design with five treatments (0, 20, 40, 60 and 80% v/v of residues and soil) and four replications were carried out. Corn yield and heavy metal contents in corn grain were analyzed. Corn yield increased by 50, 72, 85 and 71% at 20, 40, 60 and 80% treatments as compared to the control, respectively. All heavy metals content, except cadmium, nickel and zinc, in corn grain were not significantly different from the control. Arsenic, cadmium and zinc in corn grain were strongly positively correlated with concentrations in soil. The heavy metal content in corn grain was within regulated limits for human consumption.

Prabpai, S. [Suphan Buri Campus Establishment Project, Kasetsart University, 50 U Floor, Administrative Building, Paholyothin Road, Jatujak, Bangkok 10900 (Thailand)], E-mail: s.prabpai@hotmail.com; Charerntanyarak, L. [Department of Epidemiology, Faculty of Public Health, Khon Kaen University, Khon Kaen 40002 (Thailand)], E-mail: lertchai@kku.ac.th; Siri, B. [Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002 (Thailand)], E-mail: boonmee@kku.ac.th; Moore, M.R. [The University of Queensland, The National Research Center for Environmental Toxicology, 39 Kessels Road, Coopers Plans, Brisbane, Queensland 4108 (Australia)], E-mail: m.moore@uq.edu.au; Noller, Barry N. [The University of Queensland, Centre for Mined Land Rehabilitation, Brisbane, Queensland 4072 (Australia)], E-mail: b.noller@uq.edu.au

2009-08-15T23:59:59.000Z

340

LaNi{sub 5}-based metal hydride electrode in Ni-MH rechargeable cells  

DOE Patents (OSTI)

An at least ternary metal alloy of the formula AB{sub (Z-Y)}X{sub (Y)} is disclosed. In this formula, A is selected from the rare earth elements, B is selected from the elements of Groups 8, 9, and 10 of the Periodic Table of the Elements, and X includes at least one of the following: antimony, arsenic, germanium, tin or bismuth. Z is greater than or equal to 4.8 and less than or equal to 6.0. Y is greater than 0 and less than 1. Ternary or higher-order substitutions to the base AB{sub 5} alloys that form strong kinetic interactions with the predominant metals in the base metal hydride are used to form metal alloys with high structural integrity after multiple cycles of hydrogen sorption. 16 figs.

Bugga, R.V.; Fultz, B.; Bowman, R.; Surampudi, S.R.; Witham, C.K.; Hightower, A.

1999-03-30T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Quality Services: Solid Wastes, Part 361: Siting of Industrial Hazardous  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Siting of Industrial 1: Siting of Industrial Hazardous Waste Facilities (New York) Quality Services: Solid Wastes, Part 361: Siting of Industrial Hazardous Waste Facilities (New York) < Back Eligibility Commercial Fed. Government Industrial Investor-Owned Utility Local Government Municipal/Public Utility State/Provincial Govt Tribal Government Utility Program Info State New York Program Type Siting and Permitting Provider NY Department of Environmental Conservation These regulations describe the siting of new industrial hazardous waste facilities located wholly or partially within the State. Industrial hazardous waste facilities are defined as facilities used for the purpose of treating, storing, compacting, recycling, exchanging or disposing of industrial hazardous waste materials, including treatment, compacting,

342

Department of Transportation Pipeline and Hazardous Materials Safety Administration Activities  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOT/PHMSA DOT/PHMSA A ti iti Activities Michael Conroy U S Department of Transportation - 1 - U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Office of Hazardous Materials Safety Radioactive Materials U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Overview * Harmonization with International Regulations * Update on Revisions to International Regulations * Recent Letters of Interpretation * Update on Rulemakings * PHMSA Information Resources - 2 - * PHMSA Information Resources 2 U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration HM-230 Harmonized with 2000 Version of IAEA's 1996 Edition - 3 - U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration

343

Hazardous Materials Incident Response Procedure | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Materials Incident Response Procedure Hazardous Materials Incident Response Procedure Hazardous Materials Incident Response Procedure The purpose of this procedure is to provide guidance for developing an emergency response plan, as outlined in OSHA's 29 CFR 1910.120(q), for facility response. This model has been adopted and applied to work for response to transportation accidents involving radioactive material or other hazardous materials incidents Hazardous Materials Incident Response Procedure.docx More Documents & Publications Handling and Packaging a Potentially Radiologically Contaminated Patient Decontamination Dressdown at a Transportation Accident Involving Radioactive Material Medical Examiner/Coroner on the Handling of a Body/Human Remains that are Potentially Radiologically Contaminated

344

Hazardous Sites Cleanup Act (Pennsylvania) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Sites Cleanup Act (Pennsylvania) Hazardous Sites Cleanup Act (Pennsylvania) Hazardous Sites Cleanup Act (Pennsylvania) < Back Eligibility Agricultural Construction Fuel Distributor Industrial Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Utility Program Info State Pennsylvania Program Type Environmental Regulations Grant Program Provider Department of Environmental Protection This Act tasks the Pennsylvania Department of Environmental Protection with regulating hazardous waste. The department is charged with siting, review, permitting and development of hazardous waste treatment and disposal facilities in order to protect public health and safety, foster economic growth and protect the environment. Pennsylvania law establishes a fund to provide to the Department the

345

Hazardous Waste Management Act (South Dakota) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Waste Management Act (South Dakota) Hazardous Waste Management Act (South Dakota) Hazardous Waste Management Act (South Dakota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Municipal/Public Utility Local Government Installer/Contractor Rural Electric Cooperative Tribal Government Fuel Distributor Program Info State South Dakota Program Type Siting and Permitting Provider South Dakota Department of Environment and Natural Resources It is the public policy of the state of South Dakota to regulate the control and generation, transportation, treatment, storage, and disposal of hazardous wastes. The state operates a comprehensive regulatory program of hazardous waste management, and the South Dakota Department of Environment

346

Encapsulation of mixed radioactive and hazardous waste contaminated incinerator ash in modified sulfur cement  

Science Conference Proceedings (OSTI)

Some of the process waste streams incinerated at various Department of Energy (DOE) facilities contain traces of both low-level radioactive (LLW) and hazardous constituents, thus yielding ash residues that are classified as mixed waste. Work is currently being performed at Brookhaven National Laboratory (BNL) to develop new and innovative materials for encapsulation of DOE mixed wastes including incinerator ash. One such material under investigation is modified sulfur cement, a thermoplastic developed by the US Bureau of Mines. Monolithic waste forms containing as much as 55 wt % incinerator fly ash from Idaho national Engineering Laboratory (INEL) have been formulated with modified sulfur cement, whereas maximum waste loading for this waste in hydraulic cement is 16 wt %. Compressive strength of these waste forms exceeded 27.6 MPa. Wet chemical and solid phase waste characterization analyses performed on this fly ash revealed high concentrations of soluble metal salts including Pb and Cd, identified by the Environmental Protection Agency (EPA) as toxic metals. Leach testing of the ash according to the EPA Toxicity Characteristic Leaching Procedure (TCLP) resulted in concentrations of Pb and Cd above allowable limits. Encapsulation of INEL fly ash in modified sulfur cement with a small quantity of sodium sulfide added to enhance retention of soluble metal salts reduced TCLP leachate concentrations of Pb and Cd well below EPA concentration criteria for delisting as a toxic hazardous waste. 12 refs., 4 figs., 2 tabs.

Kalb, P.D.; Heiser, J.H. III; Colombo, P.

1990-01-01T23:59:59.000Z

347

HAZARDOUS MATERIALS IN AQUATIC ENVIRONMENTS OF THE MISSISSIPPI RIVER BASIN  

Science Conference Proceedings (OSTI)

In December 1992, the CBR was awarded a five-year grant of $25M from the US Department of Energy Office of Environmental Management (DOE-EM) to study pollution in the Mississippi River system. The ''Hazardous Materials in Aquatic Environments of the Mississippi River Basin'' project was an interdisciplinary, collaborative research and education project aimed at elucidating the nature and magnitude of toxic materials that contaminate aquatic environments. This project funded 15 collaborative cluster multi-year projects and 41 one-year initiation projects out of 165 submitted research proposals. This project was carried out by 134 research and technical support faculty from Xavier University (School of Arts and Sciences, and College of Pharmacy) and Tulane University (Schools of Liberal Arts and Sciences, Engineering, Medicine, and Public Health and Tropical Medicine), and 173 publications and 140 presentations were produced. More than 100 graduate and undergraduate students were trained through these collaborative cluster and initiation research projects. Nineteen Tulane graduate students received partial funding to conduct their own competitively-chosen research projects, and 28 Xavier undergraduate LIFE Scholars and 30 LIFE Interns were supported with DOE funding to conduct their mentored research projects. Studies in this project have defined: (1) the complex interactions that occur during the transport of contaminants, (2) the actual and potential impact on ecological systems and health, and (3) the mechanisms through which these impacts might be remediated. The bayou and spoil banks of Bayou Trepagnier were mapped and analyzed in terms of risks associated with the levels of hydrocarbons and metals at specific sample sites. Data from contaminated sample sites have been incorporated into a large database and used in GIS analyses to track the fate and transport of heavy metals from spoil banks into the surrounding marsh. These data are crucial to understanding how heavy metals move through wetlands environments. These data, coupled with plume characterization data, indicate that Bayou Trepagnier is a model system for understanding how wetlands populations of fish, amphibians, and plants respond to long-term hydrocarbon and metals contamination. The CBR has fifteen years of experience in developing model aquatic ecosystems for evaluating environmental problems relevant to DOE cleanup activities. Using biotechnology screens and biomarkers of exposure, this project supports other CBR research demonstrating that chemicals in the environment can signal/alter the development of species in aquatic ecosystems, and show detrimental impacts on community, population, and the ecosystem, including human health. CBR studies funded through this grant have resulted in private sector investments, international collaborations, development of new technologies, and substantial new knowledge concerning the effects of hazardous materials on human and ecosystem health. Through the CBR, Tulane and Xavier Universities partnered with DOE-EM to lay groundwork for an effective research agenda that has become part of the DOE long term stewardship science and technology program and institutional management of the DOE complex.

John A. McLachlan

2003-12-01T23:59:59.000Z

348

FINGERPRINTING INORGANIC ARSENIC AND ORGANOARSENIC COMPOUNDS IN IN SITU OIL SHALE RETORT AND PROCESS VOTERS USING A LIQUID CHROMATOGRAPH COUPLED WITH AN ATOMIC ABSORPTION SPECTROMETER AS A DETECTOR  

E-Print Network (OSTI)

2), forms the ubiquitous oil source matrix in shales. Thus~Oil Shale Retort and Process Water s Inorganic Arsenic and Organoarsenic compounds were purchased from commercial sources

Fish, Richard H.

2013-01-01T23:59:59.000Z

349

Evaluating the quality and effectiveness of hazardous waste training programs  

SciTech Connect

An installation`s compliance with Resource Conservation and Recovery Act (RCRA) hazardous waste regulations is strongly dependent on the knowledge, skill, and behavior of all individuals involved in the generation and management of hazardous waste. Recognizing this, Headquarters Air Force Materiel Command (HQ/AFMC) determined that an in-depth evaluation of hazardous waste training programs at each AFMC installation was an appropriate element in assessing the overall effectiveness of installation hazardous waste management programs in preventing noncompliant conditions. Consequently, pursuant to its authority under Air Force Instruction (AFI) 32-7042, Solid and Hazardous Waste Compliance (May 12, 1994) to support and maintain hazardous waste training, HQ/AFMC directed Argonne National Laboratory to undertake the Hazardous Waste Training Initiative. This paper summarizes the methodology employed in performing the evaluation and presents the initiative`s salient conclusions.

Kolpa, R.L.; Haffenden, R.A. [Argonne National Lab., IL (United States); Weaver, M.A. [Headquarters Air Force Materiel Command, Wright-Patterson Air Force Base, OH (United States)

1996-05-01T23:59:59.000Z

350

Oklahoma Hazardous Waste Management Act (Oklahoma) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oklahoma Hazardous Waste Management Act (Oklahoma) Oklahoma Hazardous Waste Management Act (Oklahoma) Oklahoma Hazardous Waste Management Act (Oklahoma) < Back Eligibility Agricultural Construction Industrial Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Utility Program Info State Oklahoma Program Type Environmental Regulations Provider Oklahoma Department of Environmental Quality A hazardous waste facility permit from the Department of Environmental Quality is required to store, treat or dispose of hazardous waste materials, or to construct, own or operate any facility engaged in the operation of storing, treating or disposing of hazardous waste or storing recyclable materials. The Department shall not issue a permit for the treatment, disposal or temporary storage of any liquid hazardous waste in a

351

CRAD, Packaging and Transfer of Hazardous Materials and Materials of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Packaging and Transfer of Hazardous Materials and Materials Packaging and Transfer of Hazardous Materials and Materials of National Security Interest Assessment Plan CRAD, Packaging and Transfer of Hazardous Materials and Materials of National Security Interest Assessment Plan Performance Objective: Verify that packaging and transportation safety requirements of hazardous materials and materials of national security interest have been established and are in compliance with DOE Orders 461.1 and 460.1B Criteria: Verify that safety requirements for the proper packaging and transportation of DOE/NNSA offsite shipments and onsite transfers of hazardous materials and for modal transport have been established [DOE O 460.1B, 1, "Objectives"]. Verify that the contractor transporting a package of hazardous materials is in compliance with the requirements of the Hazardous Materials

352

Experiment Hazard Class 10.2 - UV Light  

NLE Websites -- All DOE Office Websites (Extended Search)

2 - Ultraviolet Light 2 - Ultraviolet Light Applicability This hazard classification applies to all experiments involving the use of ultraviolet radiation generating equipment.Ultraviolet light (UV) is non-ionizing radiation in the 180 to 400-nanometer wavelength region of the electromagnetic spectrum. Ultraviolet light poses hazards: Eyes hazards - inflammation, cataracts, retinal damage Skin hazards - sunburn, accelerate wrinkling, increased risk of skin cancer Invisible Possible ozone generation Experiment Category Experiments involving only experiment hazard class 10.2 qualify for medium risk. The addition of other hazard classes may require the experiment to be categorized as high risk and undergo additional reviews. Experiment Hazard Control Verification Statements Engineered Controls - Shield or contain UV as close to the source as

353

www.clu-in.org 1 Bioremediation of Arsenic, Chromium, Lead, and Mercury NOTICE  

E-Print Network (OSTI)

This document was prepared by Adebowale Adeniji, a National Network of Environmental Management studies grantee, under a fellowship from the U.S. Environmental Protection Agency. This report was not subject to EPA peer review or technical review. The EPA makes no warranties, expressed or implied, including without limitation, warranty for completeness, accuracy, or usefulness of the information, warranties as to the merchantability, or fitness for a particular purpose. Moreover, the listing of any technology, corporation, company, person, or facility in this report does not constitute endorsement, approval, or recommendation by the EPA. This report provides a basic orientation and current status of bioremediation for contaminants located in the subsurface. This report contains information gathered from a range of currently available sources, including project documents, reports, periodicals, Internet searches, and personal communication with involved parties. References for each case study are provided immediately following the case study. All sources are organized in alphabetical order at the end of the document. No attempts were made to independently confirm the resources used. It has been reproduced to help provide federal agencies, states, consulting engineering firms, private industries, and technology developers with information on the current status of this project. This paper addresses the status of the application of biological treatment to clean up hazardous metals from the earths subsurface (i.e., in situ bioremediation). The target audience includes federal and state regulators, planners, and site managers. The report is available on the Internet at www.clu-in.org/studentpapers/.

Adebowale Adeniji

2004-01-01T23:59:59.000Z

354

Trace metals in fucoid algae and purple sea urchins near a high arctic lead/zinc ore deposit  

SciTech Connect

Trace metal concentrations in fucoid algae and in purple sea urchins from the vicinity of a metal mining district on North Baffin Island were determined. Higher concentrations of iron and zinc were present in algae and urchins collected nearer the mining area than in those collected further away. Concentrations of copper, iron, and zinc in algae increased with tissue age; arsenic and cadmium were lowest in intermediate-age algae tissues. Tissue distributions of iron and zinc in urchins and algae illustrate the food chain relationship between these species. 7 references, 2 tables.

Bohn, A.

1979-11-01T23:59:59.000Z

355

Method for solidification of radioactive and other hazardous waste  

SciTech Connect

Solidification of liquid radioactive waste, and other hazardous wastes, is accomplished by the method of the invention by incorporating the waste into a porous glass crystalline molded block. The porous block is first loaded with the liquid waste and then dehydrated and exposed to thermal treatment at 50-1,000.degree. C. The porous glass crystalline molded block consists of glass crystalline hollow microspheres separated from fly ash (cenospheres), resulting from incineration of fossil plant coals. In a preferred embodiment, the porous glass crystalline blocks are formed from perforated cenospheres of grain size -400+50, wherein the selected cenospheres are consolidated into the porous molded block with a binder, such as liquid silicate glass. The porous blocks are then subjected to repeated cycles of saturating with liquid waste, and drying, and after the last cycle the blocks are subjected to calcination to transform the dried salts to more stable oxides. Radioactive liquid waste can be further stabilized in the porous blocks by coating the internal surface of the block with metal oxides prior to adding the liquid waste, and by coating the outside of the block with a low-melting glass or a ceramic after the waste is loaded into the block.

Anshits, Alexander G. (Krasnoyarsk, RU); Vereshchagina, Tatiana A. (Krasnoyarsk, RU); Voskresenskaya, Elena N. (Krasnoyarsk, RU); Kostin, Eduard M. (Zheleznogorsk, RU); Pavlov, Vyacheslav F. (Krasnoyarsk, RU); Revenko, Yurii A. (Zheleznogorsk, RU); Tretyakov, Alexander A. (Zheleznogorsk, RU); Sharonova, Olga M. (Krasnoyarsk, RU); Aloy, Albert S. (Saint-Petersburg, RU); Sapozhnikova, Natalia V. (Saint-Petersburg, RU); Knecht, Dieter A. (Idaho Falls, ID); Tranter, Troy J. (Idaho Falls, ID); Macheret, Yevgeny (Idaho Falls, ID)

2002-01-01T23:59:59.000Z

356

Decision analysis for INEL hazardous waste storage  

Science Conference Proceedings (OSTI)

In mid-November 1993, the Idaho National Engineering Laboratory (INEL) Waste Reduction Operations Complex (WROC) Manager requested that the INEL Hazardous Waste Type Manager perform a decision analysis to determine whether or not a new Hazardous Waste Storage Facility (HWSF) was needed to store INEL hazardous waste (HW). In response to this request, a team was formed to perform a decision analysis for recommending the best configuration for storage of INEL HW. Personnel who participated in the decision analysis are listed in Appendix B. The results of the analysis indicate that the existing HWSF is not the best configuration for storage of INEL HW. The analysis detailed in Appendix C concludes that the best HW storage configuration would be to modify and use a portion of the Waste Experimental Reduction Facility (WERF) Waste Storage Building (WWSB), PBF-623 (Alternative 3). This facility was constructed in 1991 to serve as a waste staging facility for WERF incineration. The modifications include an extension of the current Room 105 across the south end of the WWSB and installing heating, ventilation, and bay curbing, which would provide approximately 1,600 ft{sup 2} of isolated HW storage area. Negotiations with the State to discuss aisle space requirements along with modifications to WWSB operating procedures are also necessary. The process to begin utilizing the WWSB for HW storage includes planned closure of the HWSF, modification to the WWSB, and relocation of the HW inventory. The cost to modify the WWSB can be funded by a reallocation of funding currently identified to correct HWSF deficiencies.

Page, L.A.; Roach, J.A.

1994-01-01T23:59:59.000Z

357

Encapsulation of hazardous wastes into agglomerates  

SciTech Connect

The objective of this study was to investigate the feasibility of using the cementitious properties and agglomeration characteristics of coal conversion byproducts to encapsulate and immobilize hazardous waste materials. The intention was to establish an economical way of co-utilization and co-disposal of wastes. In addition, it may aid in the eradication of air pollution problems associated with the fine-powdery nature of fly ash. Encapsulation into agglomerates is a novel approach of treating toxic waste. Although encapsulation itself is not a new concept, existing methods employ high-cost resins that render them economically unfeasible. In this investigation, the toxic waste was contained in a concrete-like matrix whereby fly ash and other cementitious waste materials were utilized. The method incorporates the principles of solidification, stabilization and agglomeration. Another aspect of the study is the evaluation of the agglomeration as possible lightweight aggregates. Since fly ash is commercially used as an aggregate, it would be interesting to study the effect of incorporating toxic wastes in the strength development of the granules. In the investigation, the fly ash self-cementation process was applied to electroplating sludges as the toxic waste. The process hoped to provide a basis for delisting of the waste as hazardous and, thereby greatly minimize the cost of its disposal. Owing to the stringent regulatory requirements for hauling and disposal of hazardous waste, the cost of disposal is significant. The current practice for disposal is solidifying the waste with portland cement and dumping the hardened material in the landfill where the cost varies between $700--950/ton. Partially replacing portland cement with fly ash in concrete has proven beneficial, therefore applying the same principles in the treatment of toxic waste looked very promising.

Guloy, A.

1992-01-28T23:59:59.000Z

358

Biological treatment of hazardous aqueous wastes  

Science Conference Proceedings (OSTI)

Studies were conducted with a rotating biological conractor (RBC) to evaluate the treatability of leachates from the Stringfellow and New Lyme hazardous-waste sites. The leachates were transported from the waste sites to Cincinnati at the United States Environmental Protection Agency's Testing and Evaluation Facility. A series of batches were run with primary effluent from Cincinnati's Mill Creek Sewage Treatment Facility. The paper reports on the results from these experiments and the effectiveness of an RBC to adequately treat leachates from Superfund sites.

Opatken, E.J.; Howard, H.K.; Bond, J.J.

1987-06-01T23:59:59.000Z

359

Arsenic promotes angiogenesis in vitro via a heme oxygenase-1-dependent mechanism  

SciTech Connect

Angiogenesis and vessel remodeling are fundamental to the pathogenesis of a number of diseases caused by environmental arsenic exposure, including tumorigenesis and cardiovascular diseases. Arsenic (AsIII) has been shown to stimulate angiogenesis and vascular remodeling in vivo. However, the exact molecular mechanisms accounting for arsenic-induced angiogenesis are not clear. The present study investigates the role of heme oxygenase-1 (HO-1) in sodium arsenite-mediated angiogenesis in vitro. Transwell assay, three-dimensional Matrigel assay, RT-PCR, ELISA and immunoblotting were used to determine cell migration, vascular tube formation, mRNA and protein expression. Chromatin immunoprecipitation and luciferase assay were applied to examine the DNA binding with protein and HO-1 transcriptional activity. Here, we report that low concentrations of arsenite (0.1-1 muM) stimulated cell migration and vascular tube formation in human microvascular endothelial cells (HMVEC). Arsenite induced HO-1 mRNA and protein expression. Knock down of HO-1 expression decreased arsenite-induced VEGF expression, cell migration, and tube formation. We showed that arsenite promoted dissociation of Bach1 (a transcriptional repressor) from the HO-1 enhancers and increased Nrf2 binding to these elements. Site directed mutagenesis assay identified that Bach1 cysteine residues 557 and 574 were essential for the induction of HO-1 gene in response to arsenite. These findings demonstrate a role for HO-1 in arsenite-mediated angiogenesis in vitro.

Meng Dan [Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031 (China); Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536 (United States); Wang Xin; Chang Qingshan; Hitron, Andrew; Zhang Zhuo [Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536 (United States); Xu Mei; Chen Gang; Luo Jia [Department of Internal Medicine, University of Kentucky, Lexington, KY 40536 (United States); Jiang Binghua [Mary Babb Randolph Cancer Center, Department of Microbiology, Immunology and Cell Biology, West Virginia University, Morgantown, WV 26506 (United States); Fang Jing [Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031 (China); Shi Xianglin, E-mail: xshi5@email.uky.ed [Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536 (United States)

2010-05-01T23:59:59.000Z

360

SAFETY CONSIDERATIONS FOR HANDLING PLUTONIUM, URANIUM, THORIUM, THE ALKALI METALS, ZIRCONIUM, TITANIUM, MAGNESIUM, AND CALCIUM  

SciTech Connect

BS>This report compiles from various sources safety considerations for work with the special metals plutonium, uranium, thorium, the alkali group, magnesium, titanium, calcium, and zirconium. General criteria to be observed in handling all of these metals and their alloys are listed, as well as characteristics of individual metals with regard to health hazards, pyrophoricity, explosiveness, and other chemical reactions, in both handling and storage. (auth)

Stout, E.L. comp.

1957-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Thermostat Metals  

Science Conference Proceedings (OSTI)

...A thermostat metal is a composite material (usually in the form of sheet or strip) that consists of two or more materials bonded together, of which one can be a nonmetal. Because the materials bonded together to form the composite differ in

362

METAL COMPOSITIONS  

DOE Patents (OSTI)

Alloys of uranium which are strong, hard, and machinable are presented, These alloys of uranium contain bctween 0.1 to 5.0% by weight of at least one noble metal such as rhodium, palladium, and gold. The alloys may be heat treated to obtain a product with iniproved tensile and compression strengths,

Seybolt, A.U.

1959-02-01T23:59:59.000Z

363

EA-0688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, 688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas EA-0688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas SUMMARY This EA evaluates the environmental impacts of a proposal to construct the Hazardous Waste Staging Facility that would help to alleviate capacity problems as well as provide a single compliant facility to stage wastes at the U.S. Department of Energy's Pantex Plant in Amarillo, Texas. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD January 29, 1993 EA-0688: Finding of No Significant Impact Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas January 29, 1993 EA-0688: Final Environmental Assessment Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas

364

Experiment Hazard Class 5.3 High Pressure Vessels  

NLE Websites -- All DOE Office Websites (Extended Search)

3 High Pressure Vessels 3 High Pressure Vessels Applicability This hazard classification applies to working with pressure vessels and systems. Other hazard classifications and associated controls may apply to experiments in this hazard class. Experiment Category Experiments involving previously reviewed hazard controls are catergorized as medium risk experiments. Experiments involving new equipment, processes or materials, or modified hazard control schemes are categorized as high risk experiments. Hazard Control Plan Verification Statements Engineered Controls - The establishment of applicable controls in accordance with the (American Society of Mechanical Engineers) ASME Boiler and Pressure Code, ASME B.31 Piping Code and applicable federal, state, and local codes. Verify vessel is stampled with ASME Code Symbol or allowable

365

Experiment Hazard Class 13.0 - High Voltage  

NLE Websites -- All DOE Office Websites (Extended Search)

3.0 - High Voltage 3.0 - High Voltage Applicability This hazard classification applies to all experiments involving the use of High Voltage Equipment. Other hazard classifications and their associated hazard controls may also apply to experiments in this hazard class. The inspection of electric equipment is covered under the APS Policy For User Electric Equipment Inspections. NOTE: Unless required Argonne training has been completed, users are not authorized to perform electrical work. Experiment Category All Hazard Class 13 experiments are categorized as medium risk experiments. Experiment Hazard Control Verification Statements Engineered Controls - Determined by review and results of a DEEI inspection of the equipment. Procedural Controls - Determined by review and results of a DEEI

366

Experiment Hazard Class 7.2 - BSL - 2 Biohazards  

NLE Websites -- All DOE Office Websites (Extended Search)

2 - BSL-2 Biohazards 2 - BSL-2 Biohazards Applicability This hazard classification applies to all experiments requiring Biosafety Level 2 (BSL-2) precautions. Other hazard classifications and their associated hazard controls may also apply to experiments in this hazard class. Experiments involving human subjects/materials or living animals, even if not biohazardous, are included in this Hazard Class. Biosafety Level 2 is similar to Biosafety Level 1 and is suitable for work involving agents of moderate potential hazard to personnel and the environment. It differs from BSL-1 in that (1) laboratory personnel have specific training in handling pathogenic agents and are directed by competent scientists; (2) access to the laboratory is limited when work is being conducted; (3) extreme precautions are taken with contaminated sharp

367

Portsmouth Site Feeds Bacteria to Render Hazardous Groundwater Waste  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Portsmouth Site Feeds Bacteria to Render Hazardous Groundwater Portsmouth Site Feeds Bacteria to Render Hazardous Groundwater Waste Harmless Portsmouth Site Feeds Bacteria to Render Hazardous Groundwater Waste Harmless April 2, 2012 - 12:00pm Addthis Neil Smith puts a trained eye on the pressure and flow of a food-grade com¬pound being injected into an under¬ground plume of hazardous waste near the X-720 Maintenance Facility at the DOE Piketon Site. The sodium lactate compound promotes bacterial growth in the groundwater that turns hazardous waste into harmless end-products. Neil Smith puts a trained eye on the pressure and flow of a food-grade com¬pound being injected into an under¬ground plume of hazardous waste near the X-720 Maintenance Facility at the DOE Piketon Site. The sodium lactate compound promotes bacterial growth in the groundwater that turns

368

ENVIRONMENTAL ASSESSMENT FOR HAZARDOUS WASTE STAGING FACILITY  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HAZARDOUS WASTE STAGING FACILITY HAZARDOUS WASTE STAGING FACILITY Project 39GF71024-GPDI21000000 . PANTEX PLANT AMARILLO, TEXAS DOE/EA-0688 JUNE 1993 MASTER DiSTRiBUTiON OF THIS DOCUMENT IS UNLIMITEI) ffrl TABLE OF CONTENTS Section Page 1.0 Need for Action 1 2.0 Description of Proposed Facility Action 3.0 Location of the Action 8 4.0 Alternatives to Proposed Action 9 4.1 No Action 9 4.2 Redesign and Modify Existing staging Facilities 9 4.3 Use Other Existing Space at Pantex Plant 9 4.4 Use Temporary Structures 9 4.5 Stage Waste at Other Sites 10 4.6 Stage Wastes Separately 10 5.0 Environmental Impacts of Proposed Action 10 5.1 Archeology 10 5.2 FloodplainlW etlands 10 5.3 Threatened and Endangered Species 10 5.4 Surrounding La,nd Use 11 5.5 Construction 11 5.6 Air Emissions 11

369

Hazardous waste site investigations: Towards better decisions  

Science Conference Proceedings (OSTI)

The Oak Ridge National Laboratory (ORNL) Life Sciences Symposia series is conducted under the Associate Director for Environmental, Life, and Social Sciences. This series began in 1978 and it provides a forum to discuss subjects of interest to the US Department of Energy, the scientific community, and the public. The Tenth ORNL Life Sciences Symposium focused on key aspects of measurements made at hazardous waste sites and their impact on the decision-making process. In particular, the symposium was concerned with how field measurements could be improved to provide greater quality and quantity of data at less cost and in less time. Presentations and papers presented in this publication provide a critical review of the current status in their respective areas of interest. An effort has been made to identify existing deficiencies, future directions, and needed research. Experts were brought together to present data on the state-of-the-art hazardous waste site investigations in four major areas: Individual projects are processed separately for the databases.

Gammage, R.B.; Berven, B.A. [eds.] [Oak Ridge National Lab., TN (United States)

1992-12-31T23:59:59.000Z

370

Method and apparatus for incinerating hazardous waste  

DOE Patents (OSTI)

An incineration apparatus and method for disposal of infectious hazardous waste including a fluidized bed reactor containing a bed of granular material. The reactor includes a first chamber, a second chamber, and a vertical partition separating the first and second chambers. A pressurized stream of air is supplied to the reactor at a sufficient velocity to fluidize the granular material in both the first and second chambers. Waste materials to be incinerated are fed into the first chamber of the fluidized bed, the fine waste materials being initially incinerated in the first chamber and subsequently circulated over the partition to the second chamber wherein further incineration occurs. Coarse waste materials are removed from the first chamber, comminuted, and recirculated to the second chamber for further incineration. Any partially incinerated waste materials and ash from the bottom of the second chamber are removed and recirculated to the second chamber for further incineration. This process is repeated until all infectious hazardous waste has been completely incinerated.

Korenberg, Jacob (York, PA)

1990-01-01T23:59:59.000Z

371

HAZARD CATEGORIZATION OF ENVIRONMENTAL RESTORATION SITES AT HANFORD WASHINGTON  

SciTech Connect

Environmental restoration activities, defined here as work to identify and characterize contaminated sites and then contain, treat, remove or dispose of the contamination, now comprises a significant fraction of work in the DOE complex. As with any other DOE activity, a safety analysis must be in place prior to commencing restoration. The rigor and depth of this safety analysis is in part determined by the site's hazard category. This category in turn is determined by the facility's hazardous material inventory and the consequences of its release. Progressively more complicated safety analyses are needed as a facility's hazard category increases from radiological to hazard category three (significant local releases) to hazard category two (significant on-site releases). Thus, a facility's hazard category plays a crucial early role in helping to determine the level of effort devoted to analysis of the facility's individual hazards. Improper determination of the category can result in either an inadequate safety analysis in the case of underestimation of the hazard category, or an unnecessarily cumbersome analysis in the case of overestimation. Contaminated sites have been successfully categorized and safely restored or remediated at the former DOE production site at Hanford, Washington. This paper discusses various means used to categorize former plutonium production or support sites at Hanford. Both preliminary and final hazard categorization is discussed. The importance of the preliminary (initial) hazard categorization in guiding further DOE involvement and approval of the safety analyses is discussed. Compliance to DOE direction provided in ''Hazard Categorization and Accident Analysis Techniques for Compliance with DOE Order 5480.23, Nuclear Safety Analysis Reports'', DOE-STD-1027-92, is discussed. DOE recently issued 10 CFR 830, Subpart B which codifies previous DOE safety analysis guidance and orders. The impact of 10 CFR 830, Subpart B on hazard categorization is also discussed.

BISHOP, G.E.

2001-05-01T23:59:59.000Z

372

Monday, November 5, 2007 -11:15 AM Microbe-Mineral Interactions and their Influence on ArsenicTransformations in the Soil Environment.  

E-Print Network (OSTI)

on ArsenicTransformations in the Soil Environment. Brandon Lafferty, University of Delaware, 152 Townsend Hall, Center for Critical Zone Research, Dept. of Plant and Soil Sciences, Newark, DE 19716 and Donald. of Plant and Soil Sciences, Newark, DE 19716. Arsenic (As) contamination of soil and water is of concern

Sparks, Donald L.

373

Hazardous Waste Management (North Dakota) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here You are here Home » Hazardous Waste Management (North Dakota) Hazardous Waste Management (North Dakota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Program Info State North Dakota Program Type Siting and Permitting The Department of Health is the designated agency to administer and coordinate a hazardous waste management program to provide for the reduction of hazardous waste generation, reuse, recovery, and treatment as

374

Hazards of black blasting powder in underground coal mining  

SciTech Connect

To help reduce explosion hazards in coal mines using dangerous black blasting powder, this circular outlines precautions designed to increase the safety factor in using this explosive.

Harrington, D.; Warncke, R.G.

1949-01-01T23:59:59.000Z

375

Chapter 38 Hazardous Waste Permitting Process (Kentucky) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8 Hazardous Waste Permitting Process (Kentucky) 8 Hazardous Waste Permitting Process (Kentucky) Chapter 38 Hazardous Waste Permitting Process (Kentucky) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Schools State/Provincial Govt Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Program Info State Kentucky Program Type Environmental Regulations Provider Department for Environmental Protection This administrative regulation establishes the general provisions for storage, treatment, recycling, or disposal of hazardous waste. It provides information about permits and specific requirements for containers, tanks,

376

Chapter 32 Standards Applicable to Generators of Hazardous Waste (Kentucky)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 Standards Applicable to Generators of Hazardous Waste 2 Standards Applicable to Generators of Hazardous Waste (Kentucky) Chapter 32 Standards Applicable to Generators of Hazardous Waste (Kentucky) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Municipal/Public Utility Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Program Info State Kentucky Program Type Environmental Regulations Provider Department for Environmental Protection This administrative regulation establishes procedures to establish the applicable general provisions for generators of hazardous waste. It also

377

Hazardous and Industrial Waste (Minnesota) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous and Industrial Waste (Minnesota) Hazardous and Industrial Waste (Minnesota) Hazardous and Industrial Waste (Minnesota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Program Info State Minnesota Program Type Siting and Permitting This section describes standards that must be met by facilities generating and processing hazardous and industrial waste, as well as required permits for the construction and operation of such a facility. The statute also

378

Oil or Hazardous Spills Releases Law (Georgia) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oil or Hazardous Spills Releases Law (Georgia) Oil or Hazardous Spills Releases Law (Georgia) Oil or Hazardous Spills Releases Law (Georgia) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Program Info State Georgia Program Type Environmental Regulations Safety and Operational Guidelines Provider Georgia Department of Natural Resources The Oil or Hazardous Spills Law requires notice to the Environmental

379

Hazardous Waste Transporter Permits (Connecticut) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Waste Transporter Permits (Connecticut) Hazardous Waste Transporter Permits (Connecticut) Hazardous Waste Transporter Permits (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection Transportation of hazardous wastes into or through the State of Connecticut requires a permit. Some exceptions apply. The regulations provide

380

Safety Analysis, Hazard and Risk Evaluations [Nuclear Waste Management  

NLE Websites -- All DOE Office Websites (Extended Search)

Safety Analysis, Hazard Safety Analysis, Hazard and Risk Evaluations Nuclear Fuel Cycle and Waste Management Technologies Overview Modeling and analysis Unit Process Modeling Mass Tracking System Software Waste Form Performance Modeling Safety Analysis, Hazard and Risk Evaluations Development, Design, Operation Overview Systems and Components Development Expertise System Engineering Design Other Major Programs Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE Division on Flickr Nuclear Waste Management using Electrometallurgical Technology Safety Analysis, Hazard and Risk Evaluations Bookmark and Share NE Division personnel had a key role in the creation of the FCF Final Safety Analysis Report (FSAR), FCF Technical Safety Requirements (TSR)

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Georgia Hazardous Waste Management Act | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous Waste Management Act Hazardous Waste Management Act Georgia Hazardous Waste Management Act < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Georgia Program Type Environmental Regulations Siting and Permitting Provider Georgia Department of Natural Resources The Georgia Hazardous Waste Management Act (HWMA) describes a

382

Nebraska Hazardous Waste Regulations (Nebraska) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Nebraska Hazardous Waste Regulations (Nebraska) Nebraska Hazardous Waste Regulations (Nebraska) Nebraska Hazardous Waste Regulations (Nebraska) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Nebraska Program Type Siting and Permitting Provider Environmental Quality These regulations, promulgated by the Department of Environmental Quality, contain provisions pertaining to hazardous waste management, waste standards, permitting requirements, and land disposal restrictions

383

DC Hazardous Waste Management (District of Columbia) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DC Hazardous Waste Management (District of Columbia) DC Hazardous Waste Management (District of Columbia) DC Hazardous Waste Management (District of Columbia) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Program Info State District of Columbia Program Type Environmental Regulations Provider District Department of the Environment This regulation regulates the generation, storage, transportation, treatment, and disposal of hazardous waste, and wherever feasible, reduces

384

Chapter 31 Identification and Listing of Hazardous Waste (Kentucky)  

Energy.gov (U.S. Department of Energy (DOE))

This administrative regulation establishes the general provisions necessary for identification and listing of a hazardous waste. The regulation also establishes the criteria for identifying the...

385

NIST Study of Hazard to Firefighters Leads to Safety Alert  

Science Conference Proceedings (OSTI)

NIST Study of Hazard to Firefighters Leads to Safety Alert. ... NIST-led research "validated the adverse consequences to firefighters when lens ...

2012-07-25T23:59:59.000Z

386

Hazardous Waste Management System-General (Ohio) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

System-General (Ohio) Hazardous Waste Management System-General (Ohio) Eligibility Agricultural Industrial Investor-Owned Utility Local Government MunicipalPublic Utility Rural...

387

DC Hazardous Waste Management (District of Columbia) | Open Energy...  

Open Energy Info (EERE)

District of Columbia Applies to Municipality District of Columbia Name DC Hazardous Waste Management (District of Columbia) Policy Type Environmental Regulations Affected...

388

South Carolina Hazardous Waste Management Act (South Carolina)  

Energy.gov (U.S. Department of Energy (DOE))

The Department of Health and Environmental Control is authorized to promulgate rules and regulations to prevent exposure of persons, animals, or the environment to hazardous waste. The construction...

389

Prevention, Abatement, and Control of Hazardous Substance Release (Iowa)  

Energy.gov (U.S. Department of Energy (DOE))

The Department of Natural Resources is authorized to establish rules regarding the prevention and mitigation of hazardous substance release. These sections contain information on the notification...

390

Fire hazards analysis of transuranic waste storage and assay facility  

Science Conference Proceedings (OSTI)

This document analyzes the fire hazards associated with operations at the Central Waste Complex. It provides the analysis and recommendations necessary to ensure compliance with applicable fire codes.

Busching, K.R., Westinghouse Hanford

1996-07-31T23:59:59.000Z

391

Using Supercomputers to Improve Seismic Hazard Maps | Argonne...  

NLE Websites -- All DOE Office Websites (Extended Search)

of 2% in 50 years. Using Supercomputers to Improve Seismic Hazard Maps PI Name: Thomas Jordan PI Email: tjordan@usc.edu Institution: Southern California Earthquake Center...

392

Environmental resources of selected areas of Hawaii: Geological hazards  

DOE Green Energy (OSTI)

This report has been prepared to make available and archive the background scientific data and related information collected on geologic hazards during the preparation of the environmental impact statement (EIS) for Phases 3 and 4 of the Hawaii Geothermal Project (HGP) as defined by the state of Hawaii in its April 1989 proposal to Congress. The US Department of Energy (DOE) published a notice withdrawing its Notice of Intent to prepare the HGP-EIS. Since the state of Hawaii is no longer pursuing or planning to pursue the HGP, DOE considers the project to be terminated. This report presents a review of current information on geologic hazards in the Hawaiian Islands. Interrelationships among these hazards are discussed. Probabilities of occurrence of given geologic hazards are provided in various regions where sufficient geologic or historical data are available. Most of the information contained herein is compiled from recent US Geological Survey (USGS) publications and USGS open-file reports related to this project. This report describes the natural geologic hazards present in the area and does not represent an assessment of environmental impacts. Geologic hazards originate both onshore and offshore. Onshore geologic hazards such as volcanic eruptions, earthquakes, surface rupture, landslides, uplift and subsidence occur mainly on the southern third of the island of Hawaii (hereinafter referred to as Hawaii). Offshore geologic hazards are more widely distributed throughout the Hawaiian Islands. Examples of offshore geologic hazards are submarine landslides, turbidity currents, and seismic sea waves (tsunamis).

Staub, W.P.; Reed, R.M.

1995-03-01T23:59:59.000Z

393

NIST and Forest Service Create World's First Hazard Scale for ...  

Science Conference Proceedings (OSTI)

... who created the new wildfire hazard assessment tool with William ... a function of fuel (both vegetation and structures), topography and local weather. ...

2012-12-05T23:59:59.000Z

394

Training Program EHS 604 ~ Hazardous Waste Generator Training  

NLE Websites -- All DOE Office Websites (Extended Search)

604 Hazardous Waste Generator Training Course Syllabus Subject Category: Waste Management Course Prerequisite: EHS0348 or equivalent Course Length: 45 minutes Medical Approval:...

395

Training Program EHS-145: First Responder Hazards Awareness Training  

NLE Websites -- All DOE Office Websites (Extended Search)

45: First Responder Hazards Awareness Training COURSE SYLLABUS Subject Category: Emergency Preparedness Schedule: NA Course Length: 15-30 minutes Medical Approval: NA Delivery...

396

Hazard Evaluation for Waste Feed Delivery Operations and Activities  

Science Conference Proceedings (OSTI)

This document contains the results of the hazard analysis that has been performed to address Waste Feed Delivery operations and activities.

RYAN, G.W.

2000-03-10T23:59:59.000Z

397

Expansion of the Volpentest Hazardous Materials Management and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Assessment Expansion of the Volpentest Hazardous Materials Management and Emergency Response Training and Education Center, Hanford Site, Richland, Washington U.S....

398

A study of the metal content of municipal solid waste. Final report  

DOE Green Energy (OSTI)

Knowledge of the content of toxic components, so called pollutant precursors, in the municipal solid waste (MSW) stream is essential to development of the strategies for source reduction and reuse, recycling, composting and disposal. Data are scarce; trends in composition for any locality even more so. In a previous study the total and water soluble chlorine content of the components of municipal solid waste were determined from sampling studies at two sites, Baltimore County, MD, and Brooklyn, NY, each for a five day period. The total sulfur content of the combined combustible components was also determined. Because of the scarcity of data and synergistic effects, it seemed appropriate to determine the heavy metal content of the preceding material prior to its disposal. The metals chosen were the so-called priority pollutant metals (PPM): antimony, arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, thallium, and zinc.

Churney, K.L.; Domalski, E.S.

1998-01-01T23:59:59.000Z

399

Process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes  

DOE Patents (OSTI)

The present invention provides a method for encapsulating and stabilizing radioactive, hazardous and mixed wastes in a modified sulfur cement composition. The waste may be incinerator fly ash or bottom ash including radioactive contaminants, toxic metal salts and other wastes commonly found in refuse. The process may use glass fibers mixed into the composition to improve the tensile strength and a low concentration of anhydrous sodium sulfide to reduce toxic metal solubility. The present invention preferably includes a method for encapsulating radioactive, hazardous and mixed wastes by combining substantially anhydrous wastes, molten modified sulfur cement, preferably glass fibers, as well as anhydrous sodium sulfide or calcium hydroxide or sodium hydroxide in a heated double-planetary orbital mixer. The modified sulfur cement is preheated to about 135.degree..+-.5.degree. C., then the remaining substantially dry components are added and mixed to homogeneity. The homogeneous molten mixture is poured or extruded into a suitable mold. The mold is allowed to cool, while the mixture hardens, thereby immobilizing and encapsulating the contaminants present in the ash.

Colombo, Peter (Patchogue, NY); Kalb, Paul D. (Wading River, NY); Heiser, III, John H. (Bayport, NY)

1997-11-14T23:59:59.000Z

400

Role of structural Fe in nontronite NAu-1 and dissolved Fe(II) in redox transformations of arsenic and antimony  

SciTech Connect

Oxidation state is a major factor affecting the mobility of arsenic (As) and antimony (Sb) in soil and aquatic systems. Metal (hydr)oxides and clay minerals are effective sorbents, and may also promote redox reactions on their surfaces via direct or indirect facilitation of electron transfer. Iron substituted for Al in the octahedral sites of aluminosilicate clay minerals has the potential to be in variable oxidation states and is a key constituent of electron transfer reactions in clay minerals. This experimental work was conducted to determine whether structural Fe in clays can affect the oxidation state of As and Sb adsorbed at the clay surface. Another goal of our study was to compare the reactivity of clay structural Fe(II) with systems containing Fe(II) present in dissolved/adsorbed forms. The experimental systems included batch reactors with various concentrations of As(III), Sb(III), As(V), or Sb(V) equilibrated with oxidized (NAu-1) or partially reduced (NAu-1-Red) nontronite, hydrous aluminum oxide (HAO) and kaolinite (KGa-1b) suspensions under oxic and anoxic conditions. The reaction times ranged from 0.5 to 720 h, and pH was constrained at 5.5 (for As) and at 5.5 or 8.0 (for Sb). The oxidation state of As and Sb in the liquid phase was determined by liquid chromatography in line with an inductively coupled plasma mass spectrometer, and in the solid phase by X-ray absorption spectroscopy. Our findings show that structural Fe(II) in NAu-1-Red was not able to reduce As(V)/Sb(V) under the conditions examined, but reduction was seen when aqueous Fe(II) was present in the systems with kaolinite (KGa-1b) and nontronite (NAu-1). The ability of the structural Fe in nontronite clay NAu-1 to promote oxidation of As(III)/Sb(III) was greatly affected by its oxidation state: if all structural Fe was in the oxidized Fe(III) form, no oxidation was observed; however, when the clay was partially reduced ({approx}20% of structural Fe was reduced to Fe(II)), NAu-1-Red promoted the most extensive oxidation under both oxic and anoxic conditions. Electron balance considerations suggest that structural Fe(III) in the NAu-1-Red was the sole oxidant in the anoxic setup, while dissolved O{sub 2} also contributes in oxic conditions. Long-term batch experiments revealed the complex dynamics of As aqueous speciation in anoxic and oxic systems when reduced arsenic was initially added: rapid disappearance of As(III) was observed due to oxidation to As(V) followed by a slow increase of aqueous As(III). This behavior is explained by two reactions: fast initial oxidation of As(III) by structural Fe(III) (anoxic) or Fe(III) and dissolved O2 (oxic) followed by the slow reduction of As(V) by dissolved Fe(II). The resulting re-mobilization of As due to As(V) reduction by aqueous Fe(II) occurs on time scales on the order of days. These reactions are likely significant in a natural soil or aquifer environment with seasonal cycling or slightly reducing conditions with an abundance of clay minerals and dissolved Fe(II).

Ilgen, Anastasia G.; Foster, Andrea L.; Trainor, Thomas P. (Alaska Fairbanks); (USGS)

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

EXPERIMENTAL GAS COOLED REACTOR. FINAL HAZARDS SUMMARY REPORT. VOLUME I. DESCRIPTION AND HAZARDS EVALUATION (Book 1 and Book 2)  

SciTech Connect

A detailed piant description including layout drawings is presented. The results obtained in analysis of credible accidents and the associated hazards are also given. (J.R.D.)

1962-10-10T23:59:59.000Z

402

Energy Conservation in Metals  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, 2010 TMS Annual Meeting & Exhibition. Symposium, Energy Conservation in Metals. Sponsorship, The Minerals, Metals and...

403

A complete electrical hazard classification system and its application  

Science Conference Proceedings (OSTI)

The Standard for Electrical Safety in the Workplace, NFPA 70E, and relevant OSHA electrical safety standards evolved to address the hazards of 60-Hz power that are faced primarily by electricians, linemen, and others performing facility and utility work. This leaves a substantial gap in the management of electrical hazards in Research and Development (R&D) and specialized high voltage and high power equipment. Examples include lasers, accelerators, capacitor banks, electroplating systems, induction and dielectric heating systems, etc. Although all such systems are fed by 50/60 Hz alternating current (ac) power, we find substantial use of direct current (dc) electrical energy, and the use of capacitors, inductors, batteries, and radiofrequency (RF) power. The electrical hazards of these forms of electricity and their systems are different than for 50160 Hz power. Over the past 10 years there has been an effort to develop a method of classifying all of the electrical hazards found in all types of R&D and utilization equipment. Examples of the variation of these hazards from NFPA 70E include (a) high voltage can be harmless, if the available current is sufficiently low, (b) low voltage can be harmful if the available current/power is high, (c) high voltage capacitor hazards are unique and include severe reflex action, affects on the heart, and tissue damage, and (d) arc flash hazard analysis for dc and capacitor systems are not provided in existing standards. This work has led to a comprehensive electrical hazard classification system that is based on various research conducted over the past 100 years, on analysis of such systems in R&D, and on decades of experience. Initially, national electrical safety codes required the qualified worker only to know the source voltage to determine the shock hazard. Later, as arc flash hazards were understood, the fault current and clearing time were needed. These items are still insufficient to fully characterize all types of electrical hazards. The new comprehensive electrical hazard classification system uses a combination of voltage, shock current available, fault current available, power, energy, and waveform to classify all forms of electrical hazards. Based on this electrical hazard classification system, many new tools have been developed, including (a) work controls for these hazards, (b) better selection of PPE for R&D work, (c) improved training, and (d) a new Severity Ranking Tool that is used to rank electrical accidents and incidents with various forms of electrical energy.

Gordon, Lloyd B [Los Alamos National Laboratory; Cartelli, Laura [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

404

Weather and the Transport of Hazardous Materials  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FHWA FHWA R d W h M P FHWA R d W h M P FHWA Road Weather Management Program FHWA Road Weather Management Program " "Weather and the transport of Hazardous Materials" Ray Murphy Office of Technical Services Ray Murphy, Office of Technical Services U.S. DOT - Federal Highway Administration Breako t Session Using Technolog to Dispatch U.S. DOE National Transportation Stakeholder Forum Breakout Session: Using Technology to Dispatch and Monitor Shipments During Adverse Conditions Presentation Contents Presentation Contents * * Context Context Cl Cl I iti ti I iti ti * * Clarus Clarus Initiative Initiative * * Connected Vehicles & Weather Connected Vehicles & Weather Connected Vehicles & Weather Connected Vehicles & Weather U.S. DOE National Transportation Stakeholder Forum

405

ASD Facility Hazard Analysis Document - Building 413  

NLE Websites -- All DOE Office Websites (Extended Search)

13 13 Equipment Hazards Engineered Controls Electrical Safety Training References Electrical Safety Procedures Mechanical Safety Training References Mechanical Safety Procedures Radiological, Environmental & Chemical Training References Radiological, Environmental & Chemical Procedures Additional Safety Tool References DC Power Supplies DC voltages < 200 Volts DC currents < 200 Amps AC voltages < 600 Volts Lifting < 350 lbs Supplies mounted in relay racks Rack doors locked or bolted closed Power source signage 120/208/480 VAC covered Lifting fixture Emergency stop buttons Flashing strobes LOTO 1, 7 1110-00124 31020101-00025 1110-00125 Power Supplies Hot Work Permits 6, 7 NA NA NA A ASD108/400 GESPAC Power Supply Control Units 120 VAC Fans Fan blades covered 1, 7 Power Supplies Hot Work Permit

406

ASD Facility Hazard Analysis Document - Building 412  

NLE Websites -- All DOE Office Websites (Extended Search)

2 2 Equipment Hazards Engineered Controls Electrical Safety Training References Electrical Safety Procedures Mechanical Safety Training References Mechanical Safety Procedures Radiological, Environmental & Chemical Training References Radiological, Environmental & Chemical Procedures Additional Safety Tool References DC Power Supplies DC voltages < 300 Volts DC currents < 500 Amps AC voltages < 600 Volts Lifting < 350 lbs Supplies mounted in relay racks Rack doors locked or bolted closed Power source signage 120/208/480 VAC covered Lifting fixture Emergency stop buttons Flashing strobes LOTO 1, 7 2502-00005 2502-00006 2502-00007 2502-00008 2502-00010 250201-00028 250202-00001 2502-00006 2502-00007 250206-00007 2202-00006 2202-00009 250203-00006 250204-00002 250205-00004

407

ASD Facility Hazard Analysis Document - Building 400  

NLE Websites -- All DOE Office Websites (Extended Search)

Equipment Hazards Engineered Controls Electrical Safety Training References Electrical Safety Procedures Mechanical Safety Training References Mechanical Safety Procedures Radiological, Environmental & Chemical Training References Radiological, Environmental & Chemical Procedures Additional Safety Tool References DC Power Supplies DC voltages < 72 Volts DC currents < 450 Amps Lifting < 75 lbs Supplies mounted in NEMA enclosures Rack doors locked Power source signage 120/208 VAC covered Emergency stop buttons Flashing strobes LOTO 1,7 31020101-00025 3108-00006 310202-00089 3102-00064 2202-00006 Power Supplies Hot Work Permits 6, 7 NA NA NA A ASD108/400 Hi Power DC Power Supply DC voltages < 72 Volts DC currents < 2600 Amps AC voltages < 600 Volts Supplies built in NEMA enclosures

408

Mr. James Bearzi, Chief Hazardous Waste Bureau  

NLE Websites -- All DOE Office Websites (Extended Search)

Carlsbad Carlsbad , New Mexico 88221 October 12, 2010 New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Notification of Results of Evaluation of Sampling Line Loss, Waste Isolation Pilot Plant Hazardous Waste Facility Permit Number NM4890139088 - TSDF Dear Mr. Bearzi: As required under Permit Condition IV.F.5.e, the Permittees are hereby notifying the New Mexico Environment Department (NMED) of the results of the evaluation of the loss of two hydrogen and methane monitoring sampling lines. The sampling lines involved were in Panel 3 Rooms 7 and 6. These lines are identified as 7E (exhaust side) and 61 (inlet side). These line losses were previously reported to the NMED on September 2, 2010 and September 28, 2010, respectively.

409

ASD Facility Hazard Analysis Document - Building 420  

NLE Websites -- All DOE Office Websites (Extended Search)

20 20 Equipment Hazards Engineered Controls Electrical Safety Training References Electrical Safety Procedures Mechanical Safety Training References Mechanical Safety Procedures Radiological, Environmental & Chemical Training References Radiological, Environmental & Chemical Procedures Additional Safety Tool References DC Power Supplies DC voltages < 300 Volts DC currents < 500 Amps AC voltages < 600 Volts Lifting < 350 lbs Supplies mounted in relay racks Rack doors locked or bolted closed Power source signage 120/208/480 VAC covered Lifting fixture Emergency stop buttons Flashing strobes LOTO 1, 7 2202-00006 2402-00002 240201-00002 240202-00003 240204-00003 31020101-00025 2202-00004 2202-00006 2202-00009 220209-00057 31020101-00025 Power Supplies Hot Work Permits

410

Ground freezing for containment of hazardous waste  

SciTech Connect

The freezing of ground for the containment of subsurface hazardous waste is a promising method that is environmentally friendly and offers a safe alternative to other methods of waste retention in many cases. The frozen soil method offers two concepts for retaining waste. One concept is to freeze the entire waste area into a solid block of frozen soil thus locking the waste in situ. For small areas where the contaminated soil does not include vessels that would rupture from frost action, this concept may be simpler to install. A second concept, of course, is to create a frozen soil barrier to confine the waste within prescribed unfrozen soil boundaries; initial research in this area was funded by EPA, Cincinnati, OH, and the Army Corps of Engineers. The paper discusses advantages and limitations, a case study from Oak Ridge, TN, and a mesh generation program that simulates the cryogenic technology.

Sayles, F.N.; Iskandar, I.K.

1998-07-01T23:59:59.000Z

411

Hazardous Gas Production by Alpha Particles  

DOE Green Energy (OSTI)

This project focused on the production of hazardous gases in the radiolysis of solid organic matrices, such as polymers and resins, that may be associated with transuranic waste material. Self-radiolysis of radioactive waste is a serious environmental problem because it can lead to a change in the composition of the materials in storage containers and possibly jeopardize their integrity. Experimental determination of gaseous yields is of immediate practical importance in the engineering and maintenance of containers for waste materials. Fundamental knowledge on the radiation chemical processes occurring in these systems allows one to predict outcomes in materials or mixtures not specifically examined, which is a great aid in the management of the variety of waste materials currently overseen by Environmental Management.

Jay A. LaVerne, Principal Investigator

2001-11-26T23:59:59.000Z

412

Heavy metals in bullfrog (Rana catesbeiana) tadpoles: Effects of depuration before analysis  

SciTech Connect

Although tadpoles may well be excellent organisms to use as bioindicators of heavy metal contamination, the relationship of deposition in the body compared to the tail, and the effect of sediments or other debris in the digestive tract on heavy metal concentrations is unknown. The authors examined the effect of experimental depuration of bullfrog (Rana catesbeiana) tadpoles on heavy metal and selenium concentrations in intact tadpoles, as well as their bodies and tails. They defined depuration in this experiment as allowing defecation as an elimination process for intestinal contents. The authors maintained wild-caught tadpoles in clean water for 0, 24, 48, and 72 h to determine the effects of clearing on heavy metal concentrations. They also examined the concentrations of heavy metals in the whole body and digestive tract separately. The authors test the null hypotheses that no differences occur in metals as a function of time in uncontaminated water, and that no differences occur in metal concentrations in the body compared to the tail and to the digestive tract. They rejected these hypotheses based on regression models. Variance in concentrations of chromium (77%) and lead (70%) were explained by part and clearing time; for manganese (80%), mercury (64%), selenium (28%), and cadmium (25%) the variation was explained only by body part; for arsenic (53%), the variation was explained by part, clearing time, and weight of the various parts. For those metals in which clearing time explained part of the variation, metal concentrations in both the body and tail decreased after 24 and 48 h, but increased slightly thereafter. Clearing, however, did not greatly decrease metal concentrations in either the body or tail. These data suggest that for some metals (mercury, manganese, cadmium, selenium), clearing has no effect, and for others the effect is slight. For fresh tadpoles, however, the digestive tract contained significantly higher concentrations of all metals than either the body or head, probably reflecting metals absorbed to sediment particles in the gut.

Burger, J. [Rutgers Univ., Piscataway, NJ (United States); Snodgrass, J. [Rutgers Univ., Piscataway, NJ (United States)]|[Savannah River Ecology Lab., Aiken, SC (United States)

1998-11-01T23:59:59.000Z

413

Reliability properties of bivariate conditional proportional hazard rate models  

Science Conference Proceedings (OSTI)

In this paper, we study reliability properties in two classes of bivariate continuous distributions based on specification of conditional hazard functions. These classes were constructed by conditioning on two different kinds of events in Arnold and ... Keywords: 62E10, 62H05, Bivariate exponential distribution, Conditionally specified distributions, Dependence measures, Failure rate, Hazard gradient

Jorge Navarro; Jos MarA Sarabia

2013-01-01T23:59:59.000Z

414

MC3196 Detonator Shipping Package Hazard Classification Assessment  

SciTech Connect

An investigation was made to determine whether the MC3196 detonator should be assigned a DOT hazard classification of Detonating Fuze, Class C Explosives per 49 CFR 173.113. This study covers the Propagation Test and the External Heat Test as approved by DOE Albuquerque Operations Office. Test data led to the recommeded hazard classification of detonating fuze, Class C explosives.

Jones; Robert B.

1979-05-31T23:59:59.000Z

415

Toll Policies for Mitigating Hazardous Materials Transport Risk  

Science Conference Proceedings (OSTI)

In this paper, we investigate toll setting as a policy tool to regulate the use of roads for dangerous goods shipments. We propose a mathematical formulation as well as a solution method for the hazardous materials toll problem. Based on a comparative ... Keywords: bilevel programming, hazardous materials transportation, network design, toll setting

Patrice Marcotte; Anne Mercier; Gilles Savard; Vedat Verter

2009-05-01T23:59:59.000Z

416

Reporting continuous releases of hazardous and extremely hazardous substances under CERCLA and EPCRA  

Science Conference Proceedings (OSTI)

This guidance is designed to provide basic instruction to US DOE and DOE operations contractor personnel on how to characterize CERCLA and EPCRA hazardous substance releases as continuous and how to prepare and deliver continuousreleasee reports to Federal, State, and local authorities. DOE staff should use this guidance as an overview of the continuous release requirements, a quick ready reference guide for specific topics concerning continuous releases and a step-by-step guide for the process of identifying and reporting continuous releases.

Not Available

1995-01-01T23:59:59.000Z

417

Experiment Hazard Class 7.1 - BSL - 1 Biohazards  

NLE Websites -- All DOE Office Websites (Extended Search)

1 - BSL-1 Biohazards 1 - BSL-1 Biohazards Applicability This hazard classification applies to all experiments involving biohazards requiring Biosafety Level 1 (BSL-1). Other hazard classifications and their associated hazard controls may also apply to experiments in this hazard class. Biosafety Level 1 is suitable for work involving well-characterized agents not known to consistently cause disease in healthy adult humans, and work that is of minimal potential hazard to laboratory personnel and the environment. The laboratory is not necessarily separated from the general traffic patterns in the building. However, laboratories should have doors for access control. A biohazard sign, though not required for BSL1, may be posted at the entrance to the laboratory. Work is generally conducted on open bench tops using standard

418

Natural Phenomena Hazards (NPH) Workshop | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Natural Phenomena Hazards (NPH) Workshop Natural Phenomena Hazards (NPH) Workshop Natural Phenomena Hazards (NPH) Workshop The Energy Department Natural Phenomena Hazards (NPH) Workshop, sponsored by the Chief of Nuclear Safety and the Chief of Defense Nuclear Safety, was held October 25-26, 2011, in Germantown, Maryland. The workshop brought together approximately 80 experts involved in the characterization of, and mitigation against, natural hazards that can impact nuclear facilities. The workshop featured twenty presentations as well as a breakout session devoted to discussing the status of the commonly used structural analysis code SASSI, a System for Analysis of Soil-Structure Interaction. A Method for Evaluating Fire after Earthquake Scenarios for Single Buildings_1.pdf Addressing Uncertainties in Design Inputs - A Case Study of Probabilistic

419

Natural Phenomena Hazards (NPH) Workshop | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Natural Phenomena Hazards (NPH) Workshop Natural Phenomena Hazards (NPH) Workshop Natural Phenomena Hazards (NPH) Workshop The Energy Department Natural Phenomena Hazards (NPH) Workshop, sponsored by the Chief of Nuclear Safety and the Chief of Defense Nuclear Safety, was held October 25-26, 2011, in Germantown, Maryland. The workshop brought together approximately 80 experts involved in the characterization of, and mitigation against, natural hazards that can impact nuclear facilities. The workshop featured twenty presentations as well as a breakout session devoted to discussing the status of the commonly used structural analysis code SASSI, a System for Analysis of Soil-Structure Interaction. A Method for Evaluating Fire after Earthquake Scenarios for Single Buildings_1.pdf Addressing Uncertainties in Design Inputs - A Case Study of Probabilistic

420

Microsoft Word - 3.3 Activity Hazard Documents 0913.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

Activity Activity Hazard Documents Activity Hazard Documents (AHDs) are formal work authorizations, as described in ES&H Manual, Chapter 6, Appendix D, that are required for higher hazard activities, as described in the AFRD Hazards, Equipment, and Authorizations Review form. When planning a new experiment or project, the first step is to contact the AFRD ES&H Coordinator to assist in determining whether an AHD or other type of work authorization is needed. Short-term, moderate hazard work may be eligible for authorizations under the Task-Based JHA. Electrical work requires authorization from the employee's supervisor (see ES&H Manual, Section 8.8.2). Writing an AHD The process of writing and obtaining approvals for a new AHD can typically take several

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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421

Experiment Hazard Class 12 - Electrical and Electronic Equipment  

NLE Websites -- All DOE Office Websites (Extended Search)

2 - Electrical and Electronic Equipment 2 - Electrical and Electronic Equipment Applicability This hazard classification applies to all experiments involving electrical and electronic equipment. Other hazard classifications and their associated hazard controls may also apply to experiments in this hazard class. The inspection of electric equipment is covered under the APS Policy For User Electric Equipment Inspections. Electrical hazards does not include work involving equipment where ALL of the following apply: (1) equipment use only in accordance with operating instructions AND/OR involves just plugging/unplugging, AND; (2) The equipment is either NRTL-listed or displays an Argonne barcoded ELECTRICAL SAFETY APPROVED sticker, AND; (3) The work involves no attempts to remove covers or panels that might expose energized electrical components.

422

Experiment Hazard Class 8.1 - Radioactive Materials/Samples  

NLE Websites -- All DOE Office Websites (Extended Search)

1 - Radioactive Materials 1 - Radioactive Materials Applicability This hazard classification applies to all experiments involving radioactive materials as samples. The requirements of this hazard class also apply to sealed radioactive sources that are used as a sample (i.e. a target for x-ray radiation). Other hazard classifications and their associated hazard controls may also apply to experiments in this hazard class. The current requirements can be found in the APS Policy for Conducting Radioactive Sample Experiments in APS Experiment Enclosures. NOTE: The APS must be notified of shipment of any radioactive materials to the site well in advance of the proposed experiment. All radioactive materials must arrive through Argonne Receiving in Building 46 and the Argonne Materials Control & Accountability group (MC&A). Please contact

423

Hazardous Waste Facility Siting Program (Maryland) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Facility Siting Program (Maryland) Facility Siting Program (Maryland) Hazardous Waste Facility Siting Program (Maryland) < Back Eligibility Commercial Construction Industrial Investor-Owned Utility Municipal/Public Utility Retail Supplier Rural Electric Cooperative Transportation Utility Program Info State Maryland Program Type Siting and Permitting Provider Maryland Department of the Environment The Hazardous Waste Facilities Siting Board is responsible for overseeing the siting of hazardous waste facilities in Maryland, and will treat hazardous waste facilities separately from low-level nuclear waste facilities. This legislation describes the factors considered by the Board in making siting decisions. The Board is authorized to enact rules and regulations pertaining to the siting of hazardous and low-level nuclear

424

DOE Standard 1020 - Natural Phenomena Hazard analysis and Design Criteria  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Standard 1020 - Natural Phenomena Hazard analysis and Design DOE Standard 1020 - Natural Phenomena Hazard analysis and Design Criteria for DOE Facilities DOE Standard 1020 - Natural Phenomena Hazard analysis and Design Criteria for DOE Facilities Department of Energy (DOE) Standard (STD)-1020-2012, Natural Phenomena Hazards Analysis and Design Criteria for DOE Facilities, provides criteria and guidance for the analysis and design of facility structures, systems, and components (SSCs) that are necessary to implement the requirements of DOE Order (O) 420.1C, Facility Safety, and to ensure that the SSCs will be able to effectively perform their intended safety functions under the effects of natural phenomena hazards (NPHs). This Standard also provides criteria and guidance for the use of industry building codes and voluntary

425

CRAD, Hazardous Waste Management - December 4, 2007 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CRAD, Hazardous Waste Management - December 4, 2007 CRAD, Hazardous Waste Management - December 4, 2007 CRAD, Hazardous Waste Management - December 4, 2007 December 4, 2007 Hazardous Waste Management Implementation Inspection Criteria, Approach, and Lines of Inquiry (HSS CRAD 64-30) Line management ensures that the requirements for generating, storing, treating, transporting, and disposing of hazardous waste, universal waste, and used oil, established under 40 CFR Subchapter I, applicable permits, and DOE requirements have been effectively implemented for federal and contractor employees, including subcontractors. Written programs and plans are in place and updated when conditions or requirements change. Employees have been properly trained for the wastes they handle. Documentation of waste characterizations, manifests, land disposal restrictions,

426

A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego  

Open Energy Info (EERE)

Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego And Mount St Helens Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego And Mount St Helens Details Activities (0) Areas (0) Regions (0) Abstract: The large amount of scientific data collected on the Mount St. Helens eruption has resulted in significant changes in thinking about the atmospheric hazards caused by explosive volcanic activity. The hazard posed by fine silicate ash with long residence time in the atmosphere is probably much less serious than previously thought. The Mount St. Helens eruption released much fine ash in the upper atmosphere. These silicates were removed very rapidly due to a process of particle aggregation (Sorem, 1982;

427

Protocol, High Hazard Nuclear Facility Project Oversight - November 2012 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High Hazard Nuclear Facility Project Oversight - November High Hazard Nuclear Facility Project Oversight - November 2012 Protocol, High Hazard Nuclear Facility Project Oversight - November 2012 November 2012 Protocol for High Hazard Nuclear Facility Project Oversight The purpose of this protocol is to establish the requirements and responsibilities for managing and conducting Office of Health, Safety and Security (HSS) independent oversight of high-hazard nuclear facility projects. As part of the Department of Energy's (DOE) self regulatory framework for safety and security, DOE Order 227.1, Independent Oversight Program, assigns HSS the responsibility for implementing an independent oversight program. It also requires the HSS Office of Enforcement and Oversight to conduct independent evaluations of safety and security. This

428

Evaluation of Horizontal Seismic Hazard of Shahrekord, Iran  

Science Conference Proceedings (OSTI)

This paper presents probabilistic horizontal seismic hazard assessment of Shahrekord, Iran. It displays the probabilistic estimate of Peak Ground Horizontal Acceleration (PGHA) for the return period of 75, 225, 475 and 2475 years. The output of the probabilistic seismic hazard analysis is based on peak ground acceleration (PGA), which is the most common criterion in designing of buildings. A catalogue of seismic events that includes both historical and instrumental events was developed and covers the period from 840 to 2007. The seismic sources that affect the hazard in Shahrekord were identified within the radius of 150 km and the recurrence relationships of these sources were generated. Finally four maps have been prepared to indicate the earthquake hazard of Shahrekord in the form of iso-acceleration contour lines for different hazard levels by using SEISRISK III software.

Amiri, G. Ghodrati [Iran University of Science and Technology--Islamic Azad University of Shahrekord, Narmak, Tehran 16846 (Iran, Islamic Republic of); Dehkordi, M. Raeisi [Department of Civil Engineering, Islamic Azad University of Shahrekord (Iran, Islamic Republic of); Amrei, S. A. Razavian [College of Civil Engineering, Iran University of Science and Technology, Tehran (Iran, Islamic Republic of); Kamali, M. Koohi [Department of Civil Engineering, Islamic Azad University of Shahrekord (Iran, Islamic Republic of)

2008-07-08T23:59:59.000Z

429

Hazardous waste research and development in the Pacific Basin  

SciTech Connect

The effective management of hazardous waste is an issue that all countries of the Pacific Basin must address. By very rough estimates, almost 272 million metric tons of hazardous wastes are being generated every year in the region. While the data are not consistently defined and reported, they do indicate the extent of the problem. Increasing development brings along an increase in the rate of hazardous waste generation. On this basis, the developing countries of the region can be expected to experience some of the same problems of the developed countries as their economies become more industrialized. Fundamental problems are involved in the compilation of consistent hazardous-waste generation statistics in the Pacific Basin. One involves the definition of what constitutes hazardous waste.

Cirillo, R.R.; Carpenter, R.A. (Argonne National Lab., IL (USA); Environment and Policy Inst., Honolulu, HI (USA))

1989-01-01T23:59:59.000Z

430

Sorption of Arsenic, Mercury, Selenium onto Nanostructured Adsorbent Media and Stabilization via Surface Reactions  

E-Print Network (OSTI)

The overall goal of this study is to evaluate the ability of novel nanostructured adsorbent media (NTAs, iron sulfides (FeS2 and FeS)) to remove arsenic, selenium and mercury from ash and scrubber pond effluents. The NTAs aim to enhance arsenic removal from solution compared to conventional adsorbents. The iron sulfides are expected to produce stable residuals for ultimate disposal after removing As, Se and Hg from solution, so that removal of these compounds from wastewaters will not result in contamination of soils and groundwaters. Methods for reliably and economically producing these materials were developed. The synthesized NTAs and iron sulfides were characterized by surface analysis techniques such as XRD, FT-IR, SEM-EDS, TEM, XPS, AFM and N2-adsorption. These analyses indicated that Ti(25)-SBA-15 has highly ordered hexagonal mesopores, MT has interparticle mesopores, pyrite (FeS2) forms crystalline, nonporous rectangular nanoparticles (<500 nm), and mackinawite (FeS) forms amorphous, nonporous nanoparticles (<100 nm). Kinetic and equilibrium tests for As(III, V) removal were conducted with NTAs over a range of pH (4, 7, 9.5). The rates of arsenic uptake were very fast and followed a bi-phasic sorption pattern, where sorption was fast for the first 10 minutes, and then slowed and was almost completed within 200 minutes. Distinct sorption maxima for As(III) removal were observed between pH 7 and pH 9.5 for MT and between pH 4 and pH 7 for Ti(25)-SBA-15. The amount of As(V) adsorbed generally decreased as pH increased. In addition, a surface complexation model (SCM) based on the diffuse layer model (DLM) was used to predict arsenic adsorption envelopes by NTAs under various environmental conditions. The SCM for As(III, V) adsorption by NTAs demonstrated the role of mono- and bidentate surface complexes in arsenic adsorption. A batch reactor system was employed in an anaerobic chamber to conduct experiments to characterize both the removal of As, Se, Hg from solution and their subsequent reactions with iron sulfides. Experiment variables for removal experiments included: contaminant valence state (As(V), As(III), Se(VI), Se(IV), Hg(II)); adsorbent/reactant type (FeS, FeS2); adsorbent/reactant concentration; pH (7, 8, 9, 10); and competing ion (SO42-) concentration (0, 1, 10 mM). Experimental variables for reaction experiments were reaction time (up to 30 days) at pH 8 and oxidation states of contaminants. In addition, the stability of iron sulfides (FeS2, FeS) combined with target compounds was investigated by measuring the ability of the target compounds to resist release to the aqueous phase after removal. These experiments showed that iron sulfides were good adsorbent/reactants for target contaminants in spite of the presence of sulfate. This was particularly true at intermediate concentrations of target compounds. The experiments also demonstrated that iron sulfides interacted with target contaminants in such a way to improve their resistance to being released back to solution as pH was changed. Therefore, this study demonstrates the ability of novel nanostructured adsorbent media to remove arsenic, selenium and mercury from ash and scrubber pond effluents and the ability of iron sulfides to produce residuals that are stable when disposed in landfills.

Han, Dong Suk

2009-12-01T23:59:59.000Z

431

Mechanochemical processing for metals and metal alloys  

DOE Patents (OSTI)

A set of processes for preparing metal powders, including metal alloy powders, by ambient temperature reduction of a reducible metal compound by a reactive metal or metal hydride through mechanochemical processing. The reduction process includes milling reactants to induce and complete the reduction reaction. The preferred reducing agents include magnesium and calcium hydride powders. A process of pre-milling magnesium as a reducing agent to increase the activity of the magnesium has been established as one part of the invention.

Froes, Francis H. (Moscow, ID); Eranezhuth, Baburaj G. (Moscow, ID); Prisbrey, Keith (Moscow, ID)

2001-01-01T23:59:59.000Z

432

Arsenic trioxide phosphorylates c-Fos to transactivate p21{sup WAF1/CIP1} expression  

SciTech Connect

An infamous poison, arsenic also has been used as a drug for nearly 2400 years; in recently years, arsenic has been effective in the treatment of acute promyelocytic leukemia. Increasing evidence suggests that opposite effects of arsenic trioxide (ATO) on tumors depend on its concentrations. For this reason, the mechanisms of action of the drug should be elucidated, and it should be used therapeutically only with extreme caution. Previously, we demonstrated the opposing effects of ERK1/2 and JNK on p21{sup WAF1/CIP1} (p21) expression in response to ATO in A431 cells. In addition, JNK phosphorylates c-Jun (Ser{sup 63/73}) to recruit TGIF/HDAC1 to suppress p21 gene expression. Presently, we demonstrated that a high concentration of ATO sustains ERK1/2 phosphorylation, and increases c-Fos biosynthesis and stability, which enhances p21 gene expression. Using site-directed mutagenesis, a DNA affinity precipitation assay, and functional assays, we demonstrated that phosphorylation of the C-terminus of c-Fos (Thr{sup 232}, Thr{sup 325}, Thr{sup 331}, and Ser{sup 374}) plays an important role in its binding to the p21 promoter, and in conjunction with N-terminus phosphorylation of c-Fos (Ser{sup 70}) to transactivate p21 promoter expression. In conclusion, a high concentration of ATO can sustain ERK1/2 activation to enhance c-Fos expression, then dimerize with dephosphorylated c-Jun (Ser{sup 63/73}) and recruit p300/CBP to the Sp1 sites (- 84/- 64) to activate p21 gene expression in A431 cells.

Liu Zimiao [Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan (China); Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan (China); Huang, H.-S. [Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan (China)], E-mail: huanghs@mail.ncku.edu.tw

2008-12-01T23:59:59.000Z

433

Developing a robust geochemical and reactive transport model to evaluate possible sources of arsenic at the CO2 sequestration natural analog site in Chimayo, New Mexico  

SciTech Connect

Migration of carbon dioxide (CO2) from deep storage formations into shallow drinking water aquifers is a possible system failure related to geologic CO2 sequestration. A CO2 leak may cause mineral precipitation/ dissolution reactions, changes in aqueous speciation, and alteration of pH and redox conditions leading to potential increases of trace metal concentrations above EPA National Primary Drinking Water Standards. In this study, the Chimayo site (NM) was examined for site-specific impacts of shallow groundwater interacting with CO2 from deep storage formations. Major ion and trace element chemistry for the site have been previously studied. This work focuses on arsenic (As), which is regulated by the EPA under the Safe Drinking Water Act and for which some wells in the Chimayo area have concentrations higher than the maximum contaminant level (MCL). Statistical analysis of the existing Chimayo groundwater data indicates that As is strongly correlated with trace metals U and Pb indicating that their source may be from the same deep subsurface water. Batch experiments and materials characterization, such as: X-ray diffraction (XRD), scanning electron microscopy (SEM), and synchrotron micro X-ray fluorescence (#2;-XRF), were used to identify As association with Fe-rich phases, such as clays or oxides, in the Chimayo sediments as the major factor controlling As fate in the subsurface. Batch laboratory experiments with Chimayo sediments and groundwater show that pH decreases as CO2 is introduced into the system and buffered by calcite. The introduction of CO2 causes an immediate increase in As solution concentration, which then decreases over time. A geochemical model was developed to simulate these batch experiments and successfully predicted the pH drop once CO2 was introduced into the experiment. In the model, sorption of As to illite, kaolinite and smectite through surface complexation proved to be the key reactions in simulating the drop in As concentration as a function of time in the batch experiments. Based on modeling, kaolinite precipitation is anticipated to occur during the experiment, which allows for additional sorption sites to form with time resulting in the slow decrease in As concentration. This mechanism can be viewed as trace metal scavenging due to sorption caused secondary mineral precipitation. Since deep geologic transport of these trace metals to the shallow subsurface by brine or CO2 intrusion is critical to assessing environmental impacts, the effective retardation of trace metal transport is an important parameter to estimate and it is dependent on multiple coupled reactions. At the field scale, As mobility is retarded due to the influence of sorption reactions, which can affect environmental performance assessment studies of a sequestration site.

Viswanathana, Hari; Daia, Zhenxue; Lopano, Christina; Keating, Elizabeth; Hakala, J. Alexandra; Scheckelc, Kirk G; Zhengd, Liange; Guthrie, George D.; Pawara, Rajesh

2012-01-01T23:59:59.000Z

434

Arsenic solid-phase partitioning in reducing sediments of a contaminated wetland  

Science Conference Proceedings (OSTI)

The geochemical partitioning of arsenic in organic-rich sediments from a contaminated wetland is examined using X-ray absorption spectroscopy and selective chemical extraction procedures, and evaluated in context to the anoxic diagenesis of iron and sulfur. The interaction between ground water and surface water has a significant influence on iron sulfide formation in the wetland sediments. Ground-water seeps supply concentrations of sulfate, dissolved hydrocarbons, ferrous iron, and arsenic, and sediments located near seeps are anomalously enriched in arsenic, reactive iron, and acid-volatile sulfides. Degree-of-sulfidation (DOS) values are high in sediments adjacent to sites of ground-water discharge, ranging from 0.57 to 1.0. Pyrite (FeS{sub 2}) formation is apparently not limited by the abundance of any one primary reactant, e.g., organic carbon, sulfate, or reactive iron; instead, persistence of precursor iron monosulfides is attributed to slow pyrite formation kinetics due to low concentrations of reactive intermediate sulfur species or possibly due to high concentrations of arsenite, dissolved organic-carbon, or other solutes that adsorb to iron monosulfides surfaces and impede transformation reactions to pyrite. Greigite (Fe{sub 3}S{sub 4}) accounts for > 80% of total reduced sulfur in sediments rich in acid-volatile sulfide and X-ray absorption spectroscopy data for magnetic separates provide direct evidence that As(III) is, at least in part, associated with reduced sulfur in the form of greigite. However, pyrite can only account for a small percentage, reduced sediments. Although pyrite is the predicted stable endpoint for reactive iron and sulfur, it appears that within a 30 y time period pyrite is a relatively unimportant host for arsenic in the system investigated here. The abundance of reactive iron in the sediments prevents accumulation of dissolved sulfide and thus prevents formation of soluble thioarsenic species. X-ray absorption near-edge structure (XANES) spectroscopy indicates only the presence of As(III) in the reduced sediments. Results of linear combination fitting of reference spectra to sediment spectra are consistent with sulfur- and/or oxygen-coordinated As(III) in association with iron monosulfides and ferrous-bearing carbonates or hydroxides.

Wilkin, Richard T.; Ford, Robert G. (EPA)

2008-10-06T23:59:59.000Z

435

Response to Comments on "A Bacterium That Can Grow Using Arsenic Instead of Phosphorus"  

SciTech Connect

Concerns have been raised about our recent study describing a bacterium that can grow using arsenic (As) instead of phosphorus (P). Our data suggested that As could act as a substitute for P in major biomolecules in this organism. Although the issues raised are of investigative interest, we contend that they do not invalidate our conclusions. We argue that while no single line of evidence we presented was sufficient to support our interpretation of the data, taken as an entire dataset we find no plausible alternative to our conclusions. Here we reply to the critiques and provide additional arguments supporting the assessment of the data we reported.

Wolfe-Simon, F; Blum, J S; Kulp, T R; Gordon, G W; Hoeft, S E; Pett-Ridge, J; Stolz, J F; Webb, S M; Weber, P K; Davies, P W; Anbar, A D; Oremland, R S

2011-03-07T23:59:59.000Z

436

A bacterium that can grow by using arsenic instead of phosphorus  

DOE Green Energy (OSTI)

Life is mostly composed of the elements carbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Although these six elements make up nucleic acids, proteins and lipids and thus the bulk of living matter, it is theoretically possible that some other elements in the periodic table could serve the same functions. Here we describe a bacterium, strain GFAJ-1 of the Halomonadaceae, isolated from Mono Lake, CA, which substitutes arsenic for phosphorus to sustain its growth. Our data show evidence for arsenate in macromolecules that normally contain phosphate, most notably nucleic acids and proteins. Exchange of one of the major bio-elements may have profound evolutionary and geochemical significance.

Wolfe-Simon, F; Blum, J S; Kulp, T R; Gordon, G W; Hoeft, S E; Pett-Ridge, J; Stolz, J F; Webb, S M; Weber, P K; Davies, P W; Anbar, A D; Oremland, R S

2010-11-01T23:59:59.000Z

437

WIPP Hazardous Waste Facility Permit - 2008 Update  

Science Conference Proceedings (OSTI)

Important new changes to the Hazardous Waste Facility Permit (HWFP) were implemented during 2007. The challenge was to implement these changes without impacting shipping schedules. Many of the changes required advanced preparation and coordination in order to transition to the new waste analysis paradigm, both at the generator sites and at the WIPP without interrupting the flow of waste to the disposal facility. Not only did aspects of waste characterization change, but also a new Permittees' confirmation program was created. Implementing the latter change required that new equipment and facilities be obtained, personnel hired, trained and qualified, and operating procedures written and approved without interruption to the contact-handled (CH) transuranic (TRU) waste shipping schedule. This was all accomplished successfully with no delayed or cancelled shipments. Looking forward to 2008 and beyond, proposed changes that will deal with waste in the DOE TRU waste complex is larger than the TRUPACT-IIs can handle. Size reduction of the waste would lead to unnecessary exposure risk and ultimately create more waste. The WIPP is working to have the Nuclear Regulatory Commission (NRC) certify the TRUPACT-III. The TRUPACT-III will be able to accommodate larger sized TRU mixed waste. Along with this new NRC-certified shipping cask, a new disposal container, the Standard Large Box, must be proposed in a permit modification. Containers for disposal of TRU mixed waste at the WIPP must meet the DOT 7A standards and be filtered. Additionally, as the TRUPACT-III/Standard Large Box loads and unloads from the end of the shipping cask, the proposed modification will add horizontal waste handling techniques to WIPP's vertical CH TRU waste handling operations. Another major focus will be the Hazardous Waste Facility Permit reapplication. The WIPP received its HWFP in October of 1999 for a term of ten years. The regulations and the HWFP require that a new permit application be submitted 180-days before the expiration date of the HWFP. At that time, the WIPP will request only one significant change, the permitting of Panel 8 to receive TRU mixed waste. (author)

Kehrman, R.F.; Most, W.A. [Washington Regulatory and Environmental Services, Carlsbad, New Mexico (United States)

2008-07-01T23:59:59.000Z

438

METAL MEDIA FILTERS, AG-1 SECTION FI  

Science Conference Proceedings (OSTI)

One application of metal media filters is in various nuclear air cleaning processes including applications for protecting workers, the public and the environment from hazardous and radioactive particles. To support this application the development of the ASME AG-1 FI Standard on Metal Media has been under way for more than ten years. Development of the proposed section has required resolving several difficult issues associated with operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality acceptance testing. Performance characteristics of metal media are dramatically different than the glass fiber media with respect to parameters like differential pressures, operating temperatures, media strength, etc. These differences make existing data for a glass fiber media inadequate for qualifying a metal media filter for AG-1. In the past much work has been conducted on metal media filters at facilities such as Lawrence Livermore National Laboratory (LLNL) and Savannah River National Laboratory (SRNL) to qualify the media as High Efficiency Particulate Air (HEPA) Filters. Particle retention testing has been conducted at Oak Ridge Filter Test Facility and at Air Techniques International (ATI) to prove that the metal media meets or exceeds the 99.97% particle retention required for a HEPA Filter. Even with his testing, data was lacking to complete an AG-1 FI Standard on metal media. With funding secured by Mississippi State University (MSU) from National Nuclear Security Administration (NNSA), a research test stand is being designed and fabricated at MSU's Institute for Clean Energy Technology (ICET) Facility to obtain qualification data on metal media. This in turn will support required data needed for the FI Standard. The paper will discuss in detail how the test stand at MSU will obtain the necessary data to complete the FI Standard.

Adamson, D.

2012-05-23T23:59:59.000Z

439

Extracting metals directly from metal oxides  

DOE Patents (OSTI)

A method of extracting metals directly from metal oxides by exposing the oxide to a supercritical fluid solvent containing a chelating agent is described. Preferably, the metal is an actinide or a lanthanide. More preferably, the metal is uranium, thorium or plutonium. The chelating agent forms chelates that are soluble in the supercritical fluid, thereby allowing direct removal of the metal from the metal oxide. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is selected from the group consisting of .beta.-diketones, halogenated .beta.-diketones, phosphinic acids, halogenated phosphinic acids, carboxylic acids, halogenated carboxylic acids, and mixtures thereof. In especially preferred embodiments, at least one of the chelating agents is fluorinated. The method provides an environmentally benign process for removing metals from metal oxides without using acids or biologically harmful solvents. The chelate and supercritical fluid can be regenerated, and the metal recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Smart, Neil G. (Moscow, ID); Phelps, Cindy (Moscow, ID)

1997-01-01T23:59:59.000Z

440

Extracting metals directly from metal oxides  

DOE Patents (OSTI)

A method of extracting metals directly from metal oxides by exposing the oxide to a supercritical fluid solvent containing a chelating agent is described. Preferably, the metal is an actinide or a lanthanide. More preferably, the metal is uranium, thorium or plutonium. The chelating agent forms chelates that are soluble in the supercritical fluid, thereby allowing direct removal of the metal from the metal oxide. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is selected from the group consisting of {beta}-diketones, halogenated {beta}-diketones, phosphinic acids, halogenated phosphinic acids, carboxylic acids, halogenated carboxylic acids, and mixtures thereof. In especially preferred embodiments, at least one of the chelating agents is fluorinated. The method provides an environmentally benign process for removing metals from metal oxides without using acids or biologically harmful solvents. The chelate and supercritical fluid can be regenerated, and the metal recovered, to provide an economic, efficient process. 4 figs.

Wai, C.M.; Smart, N.G.; Phelps, C.

1997-02-25T23:59:59.000Z

Note: This page contains sample records for the topic "hazardous metals arsenic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Hazardous waste identification: A guide to changing regulations  

Science Conference Proceedings (OSTI)

The Resource Conservation and Recovery Act (RCRA) was enacting in 1976 and amended in 1984 by the Hazardous and Solid Waste Amendments (HSWA). Since then, federal regulations have generated a profusion of terms to identify and describe hazardous wastes. Regulations that5 define and govern management of hazardous wastes are codified in Title 40 of the code of Federal Regulations, Protection of the environment''. Title 40 regulations are divided into chapters, subchapters and parts. To be defined as hazardous, a waste must satisfy the definition of solid waste any discharged material not specifically excluded from regulation or granted a regulatory variance by the EPA Administrator. Some wastes and other materials have been identified as non-hazardous and are listed in 40 CFR 261.4(a) and 261.4(b). Certain wastes that satisfy the definition of hazardous waste nevertheless are excluded from regulation as hazardous if they meet specific criteria. Definitions and criteria for their exclusion are found in 40 CFR 261.4(c)-(f) and 40 CFR 261.5.

Stults, R.G. (OHM Remediation Services Corp., Findlay, OH (United States))

1993-03-01T23:59:59.000Z

442

Overview hazard analysis for the H2Fuel Bus Program  

DOE Green Energy (OSTI)

The H2Fuel Bus project is a joint development effort to produce a safe, near-zero emission, 32 passenger bus that is propelled by electric power with continuous on-board hydrogen powered battery recharging. A key initiative in the hydrogen bus development effort is a rigorous evaluation of operational safety. Westinghouse Savannah River Co., the prime contractor at the Department of Energy`s Savannah River Site, has developed a hazard analysis methodology designed to provide a systematic, comprehensive identification and evaluation of hazards. Although originally developed to support nuclear/chemical facility safety basis documentation, the SRS Methodology has widespread applicability to operations and/or systems that utilize hazardous materials and energy. This methodology was used to perform an overview hazard analysis for the H2Fuel Bus project to focus attention on those hypothetical circumstances that pose the greatest threat to the populace and property. The hazard analysis yields a listing of all known H2Fuel Bus hazards, postulated accident scenarios describing possible hazardous releases or conditions, an assessment of the scenarios in terms of frequency of occurrence and consequence, and binning in frequency-consequence space to assess the relative severity of postulated scenarios.

Hovis, G.L.

1996-06-18T23:59:59.000Z

443

Moral Hazard with Sequential Policy Making ?  

E-Print Network (OSTI)

We develop a moral hazard model of sequential policy making. Consistent with empirical observations, equilibrium behavior by the agent overemphasizes the late stages of the policy-making process. The reason is that the principal faces a kind of political time inconsistency problem because of the temptation to revise her retention rule in the middle of the policy-making process. If the principal knows the production technology for policy outcomes, then she can solve this time inconsistency problem (and the distortions it induces) by committing to task-specific budget caps. However, if the principal is uncertain about the production technology, such task-specific budget caps introduce ex post inefficiency. If the uncertainty is large enough, the principal may prefer an institutional environment where agent actions are non-transparent and the budget is fungible. Such an environment allows the principal to exploit the agents expertise about the production technology, but at the cost of weaker overall incentives. Hence, the model highlights a novel mechanism for why transparency may not always be optimal in political environments.

unknown authors

2013-01-01T23:59:59.000Z

444

Vitrification: Destroying and immobilizing hazardous wastes  

Science Conference Proceedings (OSTI)

Researchers at the US Department of Energy`s Pacific Northwest Laboratory (PNL) have led the development of vitrification a versatile adaptable process that transforms waste solutions, slurries, moist powder and/or dry solids into a chemically durable glass form. The glass form can be safely disposed or used for other purposes, such as construction material if non-radioactive. The feed used in the process can be either combustible or non-combustible. Organic compounds are decomposed in the melters` plenum, while the inorganic residue melts into a molten glass pool. The glass produced by this process is a chemically durable material comparable to natural obsidian. Its properties typically allow it to pass the EPA Toxicity (TCLP) test as non-hazardous. To date, no glass produced by vitrification has failed the TCLP test. Vitrification is thus an ideal method of treating DOE`s mixed waste because of its ability to destroy organic compounds and bind toxic or radioactive elements. This article provides an overview of the technology.

Chapman, C.C.; Peters, R.D.; Perez, J.M.

1994-04-01T23:59:59.000Z

445

Massachusetts Oil and Hazardous Material Release Prevention and Response Act, State Superfund Law (Massachusetts)  

Energy.gov (U.S. Department of Energy (DOE))

This Act contains information on prevention strategies for hazardous material release, permits for facilities managing hazardous waste, and response tactics and liability in the event such release...

446

Resource Management Services: Water Regulation, Parts 595-599: Hazardous Substances (New York)  

Energy.gov (U.S. Department of Energy (DOE))

These regulations aim to prevent the release of hazardous substances into surface water and groundwater resources. They contain guidance for facilities which store and process hazardous substances,...

447

Removal of arsenic and other contaminants from storm run-off water by flotation, filtration, adsorption and ion exchange. Technical report, September-November 1984  

Science Conference Proceedings (OSTI)

The feasibility of removing soluble arsenic (+5) from storm runoff water by dissolved air flotation (Supracell), dissolved air flotation and sand filtration combination (Sandfloat), granular carbon adsorption, and ion exchange processes was experimentally demonstrated. The best pretreatment unit was Sandfloat clarifier consisting of both flotation and filtration. Sandfloat clarifier consistently removed over 90% of arsenic, turbidity, and color, and over 50% of chemical oxygen demand and oil and grease. Using a Sandfloat or a Supracell for pretreatment, and then using either carbon adsorption or ion exchange for second-stage treatment, the soluble arsenic in the storm water can be totally removed.

Krofta, M.; Wang, L.K.

1984-11-01T23:59:59.000Z

448

Hazardous and Nonhazardous Solid Waste Applicant Disclosure Regulations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hazardous and Nonhazardous Solid Waste Applicant Disclosure Hazardous and Nonhazardous Solid Waste Applicant Disclosure Regulations (Mississippi) Hazardous and Nonhazardous Solid Waste Applicant Disclosure Regulations (Mississippi) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Mississippi Program Type

449

Hazardous Waste Management (North Carolina) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(North Carolina) (North Carolina) Hazardous Waste Management (North Carolina) < Back Eligibility Commercial Industrial Construction Fuel Distributor Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Carolina Program Type Environmental Regulations Safety and Operational Guidelines Siting and Permitting Provider Department of Environment and Natural Resources These rules identify and list hazardous waste and set standards for the generators and operators of such waste as well as owners or operators of waste facilities. They also stats standards for surface impoundments and location standards for facilities. An applicant applying for a permit for a hazardous waste facility shall

450

Health and Safety Procedures Manual for hazardous waste sites  

SciTech Connect

The Oak Ridge National Laboratory Chemical Assessments Team (ORNL/CAT) has developed this Health and Safety Procedures Manual for the guidance, instruction, and protection of ORNL/CAT personnel expected to be involved in hazardous waste site assessments and remedial actions. This manual addresses general and site-specific concerns for protecting personnel, the general public, and the environment from any possible hazardous exposures. The components of this manual include: medical surveillance, guidance for determination and monitoring of hazards, personnel and training requirements, protective clothing and equipment requirements, procedures for controlling work functions, procedures for handling emergency response situations, decontamination procedures for personnel and equipment, associated legal requirements, and safe drilling practices.

Thate, J.E.

1992-09-01T23:59:59.000Z

451

Arsenic remediation of drinking water using iron-oxide coated coal bottom ash  

E-Print Network (OSTI)

an MCL. Table 9. US EPA TCLP Contaminant Regulatory Levels (Hazardous Waste Fact Sheet: TCLP: Toxicity Characteristic2010. http://www.ehso.com/cssepa/TCLP%20fact%20sheet%20from%

MATHIEU, JOHANNA L.

2010-01-01T23:59:59.000Z

452

Drinking water arsenic exposure and blood pressure in healthy women of reproductive age in Inner Mongolia, China  

Science Conference Proceedings (OSTI)

The extremely high exposure levels evaluated in prior investigations relating elevated levels of drinking water arsenic and hypertension prevalence make extrapolation to potential vascular effects at lower exposure levels very difficult. A cross-sectional study was conducted on 8790 women who had recently been pregnant in an area of Inner Mongolia, China known to have a gradient of drinking water arsenic exposure. This study observed increased systolic blood pressure levels with increasing drinking water arsenic, at lower exposure levels than previously reported in the literature. As compared to the referent category (below limit of detection to 20 {mu}g of As/L), the overall population mean systolic blood pressure rose 1.29 mm Hg (95% CI 0.82, 1.75), 1.28 mm Hg (95% CI 0.49, 2.07), and 2.22 mm Hg (95% CI 1.46, 2.97) as drinking water arsenic concentration increased from 21 to 50, 51 to 100, and > 100 {mu}g of As/L, respectively. Controlling for age and body weight (n = 3260), the population mean systolic blood pressure rose 1.88 mm Hg (95% CI 1.03, 2.73), 3.90 mm Hg (95% CI 2.52, 5.29), and 6.83 mm Hg (95% CI 5.39, 8.27) as drinking water arsenic concentration increased, respectively. For diastolic blood pressure effect, while statistically significant, was not as pronounced as systolic blood pressure. Mean diastolic blood pressure rose 0.78 mm Hg (95% CI 0.39, 1.16), 1.57 mm Hg (95% CI 0.91, 2.22) and 1.32 mm Hg (95% CI 0.70, 1.95), respectively, for the overall population and rose 2.11 mm Hg (95% CI 1.38, 2.84), 2.74 mm Hg (95% CI 1.55, 3.93), and 3.08 mm Hg (95% CI 1.84, 4.31), respectively, for the adjusted population (n = 3260) at drinking water arsenic concentrations of 21 to 50, 51 to 100, and > 100 {mu}g of As/L. If our study results are confirmed in other populations, the potential burden of cardiovascular disease attributable to drinking water arsenic is significant.

Kwok, Richard K. [RTI International, PO Box 12194, 3040 Cornwallis Rd., Research Triangle Park, NC 27709-2194 (United States)], E-mail: rkwok@rti.org; Mendola, Pauline [Epidemiology and Biomarkers Branch, Human Studies Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, MD-58, Research Triangle Park, NC 27711 (United States); Liu Zhiyi [Ba Men Anti-Epidemic Station, Lin He, Inner Mongolia (China); Savitz, David A. [Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1057, New York, NY 10029 (United States); Heiss, Gerardo [Department of Epidemiology, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 (United States); Ling Heling [Ba Men Anti-Epidemic Station, Lin He, Inner Mongolia (China); Xia Yajuan [Inner Mongolia Center for Endemic Disease Control and Research, Hohhot, Inner Mongolia (China); Lobdell, Danelle [Epidemiology and Biomarkers Branch, Human Studies Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, MD-58, Research Triangle Park, NC 27711 (United States); Zeng Donglin [Department of Biostatistics, School of Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 (United States); Thorp, John M. [Department of Obstetrics and Gynecology, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 (United States); Creason, John P.; Mumford, Judy L. [Epidemiology and Biomarkers Bran