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Note: This page contains sample records for the topic "tons heavy metal" 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

Tons of Heavy Metals in Mill Creek Sediments Heather Freeman  

E-Print Network (OSTI)

objectives for this summer research were to: 1.) determine how much heavy metal pollution has accumulatedTons of Heavy Metals in Mill Creek Sediments Heather Freeman 8/30/99 Geology Department Advisors: Dr. Kees DeJong Dr. Barry Manyard Dr. David Nash #12;Tons of heavy metals in Mill Creek sediments

Maynard, J. Barry

2

In-field remediation of tons of heavy metal-rich waste by Joule heating vitrification  

Science Journals Connector (OSTI)

An in-field remediation method of tons of Pb and Zn-rich ceramic waste based on Joule heating vitrification is presented. The progressive heating up to about 1850 °C led to the complete melting of the waste material and the rapid cooling of the melt formed a monolithic glass of 55 tons. The obtained glass was chemically and morphologically homogeneous and immobilized the heavy metals and non-volatile inorganic compounds. The occurrence of crystalline phases such as zircon and cordierite was observed in the lowermost part of the monolith due to the different cooling rate. Leaching tests showed that the vitrified monolith presented a high chemical resistance and metal ions were immobilized into the glass matrix. The presented in-field vitrification process was highly effective in the remediation of tons of heavy metal-rich materials and can be exploited further for remediation of large amounts of soils and asbestos-based materials.

Francesco Dellisanti; Piermaria L. Rossi; Giovanni Valdrè

2009-01-01T23:59:59.000Z

3

Options for Determining Equivalent MHTM (Metric Tons of Heavy Metal) for DOE High Level Waste  

SciTech Connect

Section 114(d) of the Nuclear Waste Policy Act of 1982, as amended (NWPA), limits the overall capacity of the first repository to 70,000 metric tons of heavy metal (MTHM). Current DOE policy is to allocate DOE spent fuel and high-level waste (HLW) at 10 percent of the total, or 7,000 MTHM. For planning purposes, 4,667 MTHM will be allocated for HLW. While the NWPA provides a technical basis for determining the MTHM equivalence of HLW, it does not address the significant technical differences between DOE HLW and commercial spent nuclear fuel (SNF). Although more than 170,000 MTHM of DOE fuel has been reprocessed to produce the inventory of HLW, the amount of radioactive waste generated per metric ton of DOE fuel is only a few percent of that in a metric ton of commercial fuel. This study compares the results of four methods for determining the MTHM equivalence of DOE HLW. These methods include (1) using the actual weight of heavy metal in reprocessed DOE fuel, (2) assuming the historical equivalence of 0.5 MTHM/canister of vitrified DOE HLW, (3) comparing the total radioactivity in DOE HLW to the radioactivity of commercial SNF, and (4) comparing the total radiotoxicity of DOE HLW, as defined for those radionuclides identified in 10 CFR 20, with SNF at 1,000 and 10,000 years. This study concludes that either of the last two options would meet Congress’s stated purposes of the NWPA, which are to (1) provide "reasonable assurance that the public and the environment will be adequately protected from the hazards posed by high-level radioactive waste and such spent nuclear fuel as may be disposed of in a repository", and (2) to "define Federal policy for the disposal of such waste and spent fuel".

Knecht, Dieter August; Valentine, James Henry; Luptak, Alan Jay; Staiger, Merle Daniel; Loo, Henry Hung Yiu; Wichmann, Thomas Leonard

1999-04-01T23:59:59.000Z

4

Heavy metal biosensor  

DOE Patents (OSTI)

Compositions and methods are provided for detection of certain heavy metals using bacterial whole cell biosensors.

Hillson, Nathan J; Shapiro, Lucille; Hu, Ping; Andersen, Gary L

2014-04-15T23:59:59.000Z

5

PHYTOEXTRACTION OF HEAVY METALS  

E-Print Network (OSTI)

) Type of phytoremediation Cost effective form of environmental remediation (Glass 1999) Chelating Agents: desorb heavy metals from soil matrix and form water-soluble metal complexes (Shen et al -using hyperaccumulator plant biomass to produce a bio-ore for commercial use -Li et al. look at using Ni

Blouin-Demers, Gabriel

6

OXFORD BIBLIOGRAPHIES IN ECOLOGY "HEAVY METAL TOLERANCE"  

E-Print Network (OSTI)

cellular mechanisms affected by heavy metals is BĂĄnfalvi 2011. Pollution by heavy metals is an important environmental problem, and sources that focus on heavy metal pollution often contain information about heavyOXFORD BIBLIOGRAPHIES IN ECOLOGY "HEAVY METAL TOLERANCE" By Nishanta Rajakaruna and Robert S. Boyd

Rajakaruna, Nishanta

7

A Better Method for Evaluating Heavy Metal Water Pollution  

E-Print Network (OSTI)

efforts to control heavy metal pollution have focused oncomponent of heavy metal pollution, Dr. Hering found thatthat makes measuring heavy metal pollution a moving target.

Hering, Janet

2002-01-01T23:59:59.000Z

8

Process for removing heavy metal compounds from heavy crude oil  

DOE Patents (OSTI)

A process is provided for removing heavy metal compounds from heavy crude oil by mixing the heavy crude oil with tar sand; preheating the mixture to a temperature of about 650.degree. F.; heating said mixture to up to 800.degree. F.; and separating tar sand from the light oils formed during said heating. The heavy metals removed from the heavy oils can be recovered from the spent sand for other uses.

Cha, Chang Y. (Golden, CO); Boysen, John E. (Laramie, WY); Branthaver, Jan F. (Laramie, WY)

1991-01-01T23:59:59.000Z

9

Heavy metals in Antarctic organisms  

SciTech Connect

To evaluate levels of essential (zinc and copper) and non-essential (mercury and cadmium) heavy metals, 34 species of organisms from different areas close to the Antarctic Peninsula were analysed. These included algae, filter-feeders, omnivorous invertebrates and vertebrates. Mercury was not detected, while cadmium was found in the majority of organisms analysed (detection limit was 0.05 ppm for both metals). The highest cadmium concentration was observed in the starfish Odontaster validus. Anthozoans, sipunculids and nudibranchs showed maximum levels of zinc, while the highest copper level was found in the gastropod Trophon brevispira. Mercury and cadmium levels in fishes were below the detection limit. Concentrations of essential and non-essential metals in birds were highest in liver followed by muscle and eggs. Cadmium and mercury levels in muscle of southern elephant seals were above the detection limit, whereas in Antarctic fur seals they were below it. The objective of the study was to gather baseline information for metals in Antarctic Ocean biota that may be needed to detect, measure and monitor future environmental changes. 46 refs., 7 figs., 8 tabs.

Moreno, J.E.A. de; Moreno, V.J. [Universidad Nacional de Mar del Plata (Argentina); Gerpe, M.S.; Vodopivez, C. [Instituto Antartico Argentino, Buenos Aires (Argentina)

1997-02-01T23:59:59.000Z

10

Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions...  

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

Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube Nanoelectrode Array. Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube...

11

Heavy metals in blue mussels (mytilus edulis) in the Bergen Harbor area, Western Norway  

SciTech Connect

Heavy metal discharges to the marine environment are of great concern all over the world. Both essential (e.g., Fe, Zn, Cu) and non essential (e.g., Hg, Cd, Pb) metals are toxic to living organism when subjected to high concentration. Many heavy metals accumulate in organisms and some also accumulate in the food chain. The anthropogenic heavy metal outlets can in this way both reduce marine species diversity and ecosystem. Further, by consuming seafood, humans will be exposed to the metals with a potential danger to human health. Goldberg proposed to use marine mussels to monitor contamination levels of coastal waters. Since then marine mussels, especially the blue mussel (Mytilus edulis), has been used widely as a surveillance organism. The blue mussel is regarded a suitable species for this purpose because it accumulates metals, it sessile, has a relatively long life span, is large enough for individual analysis, can tolerate a relatively wide range of temperature and salinity regimes, and can also synthesize the metal-binding protein, metallothionein, for metal detoxification. Furthermore, the blue mussel is a popular and tasteful food source and is suitable for culturing. The world-wide annual yield of mussels during the period 1988 to 1992 was about 1.3 million tons, of which about 0.5 million tons was Mytilus edulis. In Norway, the annual production was 77 tons in 1990. The interest of culturing mussels has increased in recent years, but the consumption of mussels has been hampered both by toxic algae and high levels of heavy metals. The latter is of special concern to those close to urban or industrial areas. This study investigated whether blue mussels in the Bergen Harbor area were contaminated with the heavy metals zinc, copper, lead, cadmium, and mercury, evaluating whether humans could eat them. 21 refs., 6 figs.

Andersen, V.; Johannessen, P.J. [Univ. of Bergen (Norway)] [Univ. of Bergen (Norway); Maage, A. [Directorate of Fisheries, Bergen (Norway)] [Directorate of Fisheries, Bergen (Norway)

1996-12-31T23:59:59.000Z

12

Chemistry 330 / Study Guide 217 Toxic Heavy Metals  

E-Print Network (OSTI)

Chemistry 330 / Study Guide 217 Unit 7 Toxic Heavy Metals Overview In ancient Rome wine was stored for this section. #12;Chemistry 330 / Study Guide 219 Common Features--Toxicity of the Heavy Metals Objectives. Metals--especially heavy metals--pose a unique environmental pollution problem. Heavy metals

Short, Daniel

13

Enhanced Bioaccumulation of Heavy Metals by Bacterial Cells Displaying  

E-Print Network (OSTI)

Enhanced Bioaccumulation of Heavy Metals by Bacterial Cells Displaying Synthetic Phytochelatins for enhanced bioaccumulation of toxic metals. Synthetic genes encoding for several metal strategy for develop- ing high-affinity bioadsorbents suitable for heavy metal removal. © 2000 John Wiley

Chen, Wilfred

14

Heavy metal removal and recovery using microorganisms  

SciTech Connect

Microorganisms -- bacteria, fungi, and microalgae -- can accumulate relatively large amounts of toxic heavy metals and radionuclides from the environment. These organisms often exhibit specificity for particular metals. The metal content of microbial biomass can be a substantial fraction of total dry weight with concentration factors (metal in dry biomass to metal in solution) exceeding one million in some cases. Both living and inert (dead) microbial biomass can be used to reduce heavy metal concentrations in contaminated waters to very low levels -- parts per billion and even lower. In many respects (e.g. specificity, residual metal concentrations, accumulation factors, and economics) microbial bioremoval processes can be superior to conventional processes, such as ion exchange and caustic (lime or hydroxide) precipitation for heavy metals removal from waste and contaminated waters. Thus, bioremoval could be developed to contribute to the clean-up of wastes at the Savannah River Site (SRS) and other DOE facilities. However, the potential advantages of bioremoval processes must still be developed into practical operating systems. A detailed review of the literature suggests that appropriate bioremoval processes could be developed for the SRS. There is great variability from one biomass source to another in bioremoval capabilities. Bioremoval is affected by pH, other ions, temperature, and many other factors. The biological (living vs. dead) and physical (immobilized vs. dispersed) characteristics of the biomass also greatly affect metal binding. Even subtle differences in the microbial biomass, such as the conditions under which it was cultivated, can have major effects on heavy metal binding.

Wilde, E.W. (Westinghouse Savannah River Co., Aiken, SC (United States)); Benemann, J.R. (Benemann (J.R.), Pinole, CA (United States))

1991-02-01T23:59:59.000Z

15

Detection of Heavy Metal Ions Based on Quantum Point Contacts  

E-Print Network (OSTI)

. The ability to detect trace amounts of metal ions is important because of the toxicity of heavy metal ionsDetection of Heavy Metal Ions Based on Quantum Point Contacts Vasanth Rajagopalan, Salah Boussaad on many living organisms and the consequence of heavy metal ions not being biodegradable. To date, heavy

Zhang, Yanchao

16

Heavy Metal Tolerance Robert S. Boyd, Nishanta Rajakaruna  

E-Print Network (OSTI)

be useful to solve environmental problems caused by heavy metal pollution. General Overviews General: a recent example targeting cellular mechanisms affected by heavy metals is BĂĄnfalvi 2011. Pollution by heavy metals is an important environmental problem, and sources that focus on heavy metal pollution

Rajakaruna, Nishanta

17

Gold Nanoparticle-Based Sensing of "Spectroscopically Silent" Heavy Metal  

E-Print Network (OSTI)

of aqueous heavy metal ions, including toxic metals such as lead, cadmium, and mercury, is describedLetters Gold Nanoparticle-Based Sensing of "Spectroscopically Silent" Heavy Metal Ions Youngjin Kim that by functionalizing metal nanoparticles with appropriate heavy-metal ion receptors, the particles might be coaxed

18

Water-soluble organophosphorus reagents for mineralization of heavy metals.  

SciTech Connect

In this report, we have described the principal stages of a two-step process for the in-situ stabilization of actinide ions in the environment. The combination of cation exchange and mineralization appears likely to provide a long-term solution to environments contaminated with heavy metals. Relying on a naturally occurring sequestering agent has obvious potential advantages from a regulatory standpoint. There are additional aspects of this technology requiring further elucidation, including the demonstration of the effect of these treatment protocols on the geohydrology of soil columns, further examination of the influence of humates and other colloidal species on cation uptake, and microbiological studies of phytate hydrolysis. We have learned during the course of this investigation that phytic acid is potentially available in large quantities. In the US alone, phytic acid is produced at an annual rate of several hundred thousand metric tons as a byproduct of fermentation processes (11). This material presently is not isolated for use. Instead, most of the insoluble phyate (as phytin) is being recycled along with the other solid fermentation residues for animal feed. This material is in fact considered undesirable in animal feed. The details of possible separation processes for phytate from these residues would have to be worked out before this untapped resource would be available for application to heavy metal sequestration. The results described emphasize the behavior of actinide and trivalent lanthanide metal ions, as these species are of primary interest to the Department of Energy for the cleanup of the former nuclear weapons production complex. While the specific demonstration includes this limited selection of metal ions, the technique should be readily applicable to any class of metal ions that form insoluble phosphate compounds under appropriate conditions. Further, though this demonstration has been conducted in the pH 5-8 range, it is conceivable that the basic concepts would apply equally well for the stabilization of waste metals in mill tailings piles, wherein conditions can be moderately acidic.

Nash, K. L.

1999-02-26T23:59:59.000Z

19

Magnetic Process For Removing Heavy Metals From Water Employing Magnetites  

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

Magnetic Process For Removing Heavy Metals From Water Employing Magnetic Process For Removing Heavy Metals From Water Employing Magnetites Magnetic Process For Removing Heavy Metals From Water Employing Magnetites A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. Available for thumbnail of Feynman Center (505) 665-9090 Email Magnetic Process For Removing Heavy Metals From Water Employing Magnetites A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. The magnetite is mixed with the water such that at least a portion of, and preferably the majority of, the heavy metal in the water is bound to the magnetite. Once this occurs the magnetite and

20

Heavy metals behaviour in a gasification reactor  

Science Journals Connector (OSTI)

Sludge coming from cleaning processes of wastewater, Municipal Solid Waste (MSW), and Refuse Derived Fuel (RDF) can be exploited for producing energy because of their heating value. Cleaning the produced syngas is important because of environmental troubles, ... Keywords: heavy metals, syngas, thermodynamic, waste gasification

Martino Paolucci; Carlo Borgianni; Paolo De Filippis

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

STANDARD OPERATING PROCEDURE HEAVY METAL SALTS (selected)  

E-Print Network (OSTI)

MSDS ___Special training provided by the department/supervisor ___Review of the OSHA Lab Standard ___Review of the departmental safety manual ___Review of the Chemical Hygiene Plan ___Safety meetings12.1 STANDARD OPERATING PROCEDURE for HEAVY METAL SALTS (selected) Location

Pawlowski, Wojtek

22

Heavy metals removal from oil sludge using ion exchange textiles.  

E-Print Network (OSTI)

??In this research, ion exchange textiles were used for the first time for the removal of heavy metals from oil sludge. The target metals which… (more)

Muslat, Ziyad

2005-01-01T23:59:59.000Z

23

Detection of Heavy Metal Ions in Drinking Water Using a  

E-Print Network (OSTI)

, and clinical toxicology. A number of techniques have been developed over the years for heavy metal ion analysisDetection of Heavy Metal Ions in Drinking Water Using a High-Resolution Differential Surface-resolution differential surface plasmon resonance (SPR) sensor for heavy metal ion detection. The sensor surface

Chen, Wilfred

24

REVIEW ARTICLE Heavy Metal Pollutants and Chemical Ecology: Exploring  

E-Print Network (OSTI)

REVIEW ARTICLE Heavy Metal Pollutants and Chemical Ecology: Exploring New Frontiers Robert S. Boyd to be learned about how heavy metal pollution impacts organisms, and that exciting new research frontiers as pollutants (Han et al. 2002), including Cd, Cu, Cr, Hg, Pb, Ni, and Zn. Much research on heavy metal

Boyd, Robert S.

25

Enrichment of Heavy Metals in Sediment Resulting from Soil  

E-Print Network (OSTI)

, Harpenden, Hertfordshire AL5 2JQ, U.K. Heavy metal pollution of soil and water is often associatedEnrichment of Heavy Metals in Sediment Resulting from Soil Erosion on Agricultural Fields J O H N N concentrations of these heavy metals were up to 3.98 times higher in the sediment than in the parent soil

Quinton, John

26

Plant rhamnogalacturonan II complexation of heavy metal cations  

DOE Patents (OSTI)

The present invention provides rhamnogalacturonan-II (RG-II) and relates to its ability to complex specific multivalent heavy metal cations. In the presence of boric acid, RG-II monomers form dimers that are cross-linked by a borate ester. The yield of such borate ester cross-linked dimers of RG-II is enhanced in the presence of specific heavy metal cations. The present invention further relates to the utility of RG-II in assays for the detection of specific heavy metal contamination; as a reagent useful in the removal of specific heavy metal cations contaminating foods and liquids, for example, fish, wines, etc.; as a pharmaceutical composition useful as an antidote in specific heavy metal cation poisoning; as a treatment for the detoxification of specific heavy metal cations from blood and/or tissues; and in a method of remediation of waters and soils contaminated with specific heavy metal cations.

O'Neill, Malcolm A. (Winterville, GA); Pellerin, Patrice J. M. (Montpellier, FR); Warrenfeltz, Dennis (Athens, GA); Vidal, Stephane (Combaillaux, FR); Darvill, Alan G. (Athens, GA); Albersheim, Peter (Athens, GA)

1999-01-01T23:59:59.000Z

27

Plant rhamnogalacturonan II complexation of heavy metal cations  

DOE Patents (OSTI)

The present invention provides rhamnogalacturonan-II (RG-II) and relates to its ability to complex specific multivalent heavy metal cations. In the presence of boric acid, RG-II monomers form dimers that are cross-linked by a borate ester. The yield of such borate ester cross-linked dimers of RG-II is enhanced in the presence of specific heavy metal cations. The present invention further relates to the utility of RG-II in assays for the detection of specific heavy metal contamination; as a reagent useful in the removal of specific heavy metal cations contaminating foods and liquids, for example, fish, wines, etc.; as a pharmaceutical composition useful as an antidote in specific heavy metal cation poisoning; as a treatment for the detoxification of specific heavy metal cations from blood and/or tissues; and in a method of remediation of waters and soils contaminated with specific heavy metal cations. 15 figs.

O`Neill, M.A.; Pellerin, P.J.M.; Warrenfeltz, D.; Vidal, S.; Darvill, A.G.; Albersheim, P.

1999-03-02T23:59:59.000Z

28

(Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2010, five companies operated nine primary aluminum smelters; six smelters  

E-Print Network (OSTI)

16 ALUMINUM1 (Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2010, five companies operated nine primary aluminum smelters; six smelters were closed on published market prices, the value of primary metal production was $3.99 billion. Aluminum consumption

29

Functionalized Nanoporous Silica for Removal of Heavy Metals...  

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

(SAMMS) have previously demonstrated the ability to serve as very effective heavy metal sorbents in a range of aquatic and environmental systems suggesting they may be...

30

Concentrations of Heavy Metals in Selected Tissues of Blue  

E-Print Network (OSTI)

Abstract: Persian Gulf supports diverse ecosystems and biota in need of remediation and protection and metal data from this region is needed. The levels of heavy metals (Fe, Hg, Ni and Pb) in tissues (hepatopancreas, muscle and exoskeleton) of blue swimming crab, Portunus pelagicus and sediments in the Persian Gulf coasts, south Iran were investigated. Heavy metals analysis was performed by Atomic Absorption Spectrophotometer. The concentration of heavy metals in sediments at all sampling stations occurs in descending order of Fe> Ni> Hg> Pb during both seasons. The distribution pattern of heavy metals in the tissues of crab and sediments was as follows: sediment> hepatopancreasn> muscle> exoskeleton. Maximum concentration of the total heavy metals in sediments and all tissues of P. pelagicus observes in Bahrekan station (Pheavy metals in the tissues of the crab P. pelagicus. In present study recorded that there was negligible differences in heavy metals levels between different seasons. Differences in heavy metals concentrations among the species is likely to have resulted from metal bioavailability, hydrodynamics of the environment, changes in tissue composition, stations of collection and sources of pollution within Persian Gulf.

Mehdi Hosseini; Afshin Abdi Bastami; Javad Kazemzadeh Khoei; Maryam Esmailian; Elmira Janmohammadi Songhori; Mina Najafzadeh

31

Removal of Heavy Metals from Industrial Effluent Using Bacteria  

E-Print Network (OSTI)

Industrial development results in the generation of industrial effluents, and if untreated results in water, sediment and soil pollution. (Fakayode and Onianwa, 2002 ? Fakayode, 2005). Industrial wastes and emission contain toxic and hazardous substances, most of which are detrimental to human health (Jimena et al.,2008 ? Ogunfowokan et al.,2005 ? Rajaram et al.,2008). The key pollutants include heavy metals, chemical wastes and oil spills etc. Heavy metal resistant bacteria have significant role in bioremediation of heavy metals in wastewater. The objective of this work is to study the role of bacteria in removing the heavy metals present in the industrial effluent.Five effluent samples out of nine were selected for this study due to high content of heavy metals. The heavy metals Hg and Cu were removed by Bacillus sp. The average Hg reduction was 45 % and Cu reduction was recorded as 62%. The heavy metals Cd, As and Co were removed by Pseudomonas sp. The average Cd reduction was 56%, average As reduction was 34 % and average Co reduction was recorded as 53%. The heavy metals Cd and Cu were removed by Staphylococcus sp. The average Cd reduction was 44 % and average Cu reduction was recorded as 34 %.

Manisha N; Dinesh Sharma; Arun Kumar

32

Heavy Metal Tolerance in Plants J.ANTONOVIOS  

E-Print Network (OSTI)

#12;Heavy Metal Tolerance in Plants J.ANTONOVIOS Department of Biology. University of Stirling to Sprays and Toxicants . . 33 3.Metal Tolerance in Laboratory Strains . . . 34 Present address: Department.K. I. Introduction . . . . . . . . . . . 2 I1. Ecology of Metal Tolerance . . . . . . . . . 4 A

Antonovics, Janis

33

Toxic heavy metals: materials cycle optimization.  

Science Journals Connector (OSTI)

...United States Total consumption, short % total consumption tons x 10-6 in recycled...units (0.01 quad) of fuel would be saved, along...significantly, requiring lower engine compression ratios and ceteris paribus reduced fuel econ- omy. This has...

R U Ayres

1992-01-01T23:59:59.000Z

34

Heavy Liquid Metal Reactor Development - Nuclear Engineering Division  

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

> Heavy Liquid Metal Reactor Development > Heavy Liquid Metal Reactor Development Capabilities Nuclear Systems Modeling and Design Analysis Reactor Physics and Fuel Cycle Analysis Nuclear Data Program Advanced Reactor Development Overview Advanced Fast Reactor (AFR) Heavy Liquid Metal Reactor Development Generation IV Nuclear Waste Form and Repository Performance Modeling Nuclear Energy Systems Design and Development Other Capabilities Work with Argonne Contact us For Employees Site Map Help Advanced Reactor Development and Technology Heavy Liquid Metal Reactor Development Bookmark and Share STAR-LM: Simplified, Modular, Small Reactor Featuring Flow-thru Fuel Cartridge STAR-LM: Simplified, Modular, Small Reactor Featuring Flow-thru Fuel Cartridge. Click on image to view larger image. Argonne has traditionally been the foremost institute in the US for

35

Magnetic Process For Removing Heavy Metals From Water Employing...  

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

of heavy metals from water using the process outlined above. U.S. Patent No.: 7,153,435 (DOE S-100,646) Patent Application Filing Date: July 22, 2003 Patent Issue Date: December 26...

36

Bioremediation of soil contaminated with hydrocarbons and heavy metals  

SciTech Connect

This investigation showed that a soil contaminated with petroleum hydrocarbons and heavy metals had sufficient indigenous microbial activity for hydrocarbon biodegradation under nonlimiting conditions. Nutrient supplementation with nitrogen and phosphate, together with aeration, seemed to be the most important factors for enhancing biodegradation. Hydrocarbon biodegradation occurred to a much greater extent under aerobic than under anaerobic conditions. Biodegradation did, however, induce low pH conditions and thus caused high heavy-metal concentrations in the leachate. Anaerobic conditions inhibited hydrocarbon biodegradation with no subsequent drop in pH and low heavy-metal concentrations in the leachate. Thus, anaerobic conditions were shown to facilitate less metal mobility than low pH conditions. Air sparging did not cause a significant increase in biodegradation. Adsorption of heavy-fraction hydrocarbons (> C{sub 20}) to microorganisms and colloidal material in the leachate was suspected of facilitating mobility of these fractions and thus their subsequent detection in the leachate.

Plessis, C.A. du; Phaal, C.B.; Senior, E. [Univ. of Natal, Scottsville (South Africa)

1995-12-31T23:59:59.000Z

37

Heavy metal ions are potent inhibitors of protein folding  

SciTech Connect

Environmental and occupational exposure to heavy metals such as cadmium, mercury and lead results in severe health hazards including prenatal and developmental defects. The deleterious effects of heavy metal ions have hitherto been attributed to their interactions with specific, particularly susceptible native proteins. Here, we report an as yet undescribed mode of heavy metal toxicity. Cd{sup 2+}, Hg{sup 2+} and Pb{sup 2+} proved to inhibit very efficiently the spontaneous refolding of chemically denatured proteins by forming high-affinity multidentate complexes with thiol and other functional groups (IC{sub 50} in the nanomolar range). With similar efficacy, the heavy metal ions inhibited the chaperone-assisted refolding of chemically denatured and heat-denatured proteins. Thus, the toxic effects of heavy metal ions may result as well from their interaction with the more readily accessible functional groups of proteins in nascent and other non-native form. The toxic scope of heavy metals seems to be substantially larger than assumed so far.

Sharma, Sandeep K. [Biochemisches Institut, Universitaet Zuerich, CH-8057 Zuerich (Switzerland); Departement de Biologie Moleculaire Vegetale, Universite de Lausanne, CH-1015 Lausanne (Switzerland); Goloubinoff, Pierre [Departement de Biologie Moleculaire Vegetale, Universite de Lausanne, CH-1015 Lausanne (Switzerland); Christen, Philipp [Biochemisches Institut, Universitaet Zuerich, CH-8057 Zuerich (Switzerland)], E-mail: christen@bioc.uzh.ch

2008-07-25T23:59:59.000Z

38

ENVIRONMENTAL IMPACT OF HEAVY METAL POLLUTION IN NATURAL AQUATIC SYSTEMS  

E-Print Network (OSTI)

He who taught the use of the pen, Taught man that which he knew not" The distribution of heavy metals between soil and soil solutions is a key issue in evaluating the environmental impact of long term applications of heavy metals to land. Contamination of soils by heavy metals has been reported by many workers. Metal adsorption is affected by many factors, including soil pH, clay mineralogy, abundance of oxides and organic matter, soil composition and solution ionic strength. The pH is one of the many factors affecting mobility of heavy metals in soils and it is likely to be the most easily managed and the most significant. To provide the appropriate level of protection for aquatic life and other uses of the resource, it is important to be able to predict the environmental distribution of important metals on spatial and temporal scales and to do so with particular emphasis on the water column concentrations. Regulatory levels reflected in water quality criteria or standards are based on

Muhammad Rehan Tayab

39

Tunable Biopolymers for Heavy Metal Removal Jan Kostal, Ashok Mulchandani, and Wilfred Chen*  

E-Print Network (OSTI)

persistent nature, heavy metal ions are major contributors to pollution of the biosphere.1,2 These metalsTunable Biopolymers for Heavy Metal Removal Jan Kostal, Ashok Mulchandani, and Wilfred Chen synthesized for the removal of heavy metals from dilute waste streams. Protein-protein interaction

Chen, Wilfred

40

SEPARATION OF HEAVY METALS: REMOVAL FROM INDUSTRIAL WASTEWATERS  

Office of Scientific and Technical Information (OSTI)

SEPARATION SEPARATION OF HEAVY METALS: REMOVAL FROM INDUSTRIAL WASTEWATERS AND CONTAMINATED SOIL* Robert W. Peters + and Linda Shem Energy Systems Division Argonne National Laboratory 9700 South Cass Avenue Argonne, Illinois 60439 Abstract This paper reviews the applicable separation technologies relating to removal of heavy metals from solution and from soils in order to present the state-of-the-art in the field. Each technology is briefly described and typical operating conditions and technology performance are presented. Technologies described include chemical precipitation (including hydroxide, carbonate, or sulfide reagents), coagulation/flocculation, ion exchange, solvent extraction, extraction with chelating agents, complexation, electrochemical operation, cementation, membrane operations, evaporation, adsorption, solidification/stabilization, and

Note: This page contains sample records for the topic "tons heavy metal" 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

The effect of heavy metals on the activated sludge  

Science Journals Connector (OSTI)

The effect of heavy metal shock loading on biological treatment systems was studied by traditional methods and molecular biological techniques. Two kinds of SBR (sequence batch reactor) operation units, unacclimated and acclimated activated sludge systems, were studied. The addition of special nutrients and powdered activated carbon (PAC) to stimulate heavy metal uptake and recovery were studied. The kinetic constants could be used to describe the effect of the inhibition of substance utilisation. The results showed that heavy metal shock loading had a greater effect on the unacclimated activated sludge system than on the acclimated one. The special nutrients greatly enhanced the uptake of copper, and the PAC improved sludge settling and decreased the turbidity of the effluent. The variation of dominant species and the diversity of the bacterial community were analysed using 16S ribosomal DNA. Compared with the slight change of dominant species during acclimation by copper, there was a great change in the acclimated system shocked by a high concentration of copper. The results confirmed that the acclimation could improve the resistance of microorganisms to heavy metal toxicity.

B. Xie; K.S. Kang; E. Nakamura; K. Itoh

2002-01-01T23:59:59.000Z

42

Removal of heavy metals from samples of residual sludge  

Science Journals Connector (OSTI)

Nitric acid leaching processes were evaluated for removal of heavy metals from samples of residual sludge from an industrial and municipal wastewater plant. The study showed that an acid:water ratio of 1:1 and a nitric acid concentration of 2 mol 1?1 gave efficient removal of 86.7%, 100% and 100% of copper, nickel and arsenic.

Jose Abrego

1996-01-01T23:59:59.000Z

43

THERMODYNAMIC STUDY OF HEAVY METALS BEHAVIOUR DURING MUNICIPAL WASTE INCINERATION  

E-Print Network (OSTI)

, heat and mass transfer, drying, pyrolysis, combustion of pyrolysis gases, combustion and gasificationTHERMODYNAMIC STUDY OF HEAVY METALS BEHAVIOUR DURING MUNICIPAL WASTE INCINERATION Y. MEÂŽ NARD, A MeÂŽtallurgie (LSG2M) Nancy, France T he incineration of municipal solid waste (MSW) contributes

Boyer, Edmond

44

Metagenomic Insights into Evolution of a Heavy Metal-Contaminated Groundwater Microbial Community  

E-Print Network (OSTI)

acetone). Finally, toxic heavy metal stress has resulted inby exporting toxic organics from the cell. (iv) Heavy metalheavy metal ions are relatively simple, typically involving: (a) conversion of the ion to a less toxic

Hemme, Christopher L.

2010-01-01T23:59:59.000Z

45

Water Research 37 (2003) 43114330 A review of the biochemistry of heavy metal  

E-Print Network (OSTI)

of toxic heavy metals such as Cd2+ , Cu2+ , Zn2+ , Pb2+ , Cr3+ , and Hg2+ by inexpensive biomaterialsWater Research 37 (2003) 4311­4330 Review A review of the biochemistry of heavy metal biosorption and fucoidan, which are chiefly responsible for heavy metal chelation. In this comprehensive review

Long, Bernard

46

Heavy Metal Stress. Activation of Distinct Mitogen-Activated Protein Kinase Pathways  

E-Print Network (OSTI)

, 2003; Polle and Schuštzendušbel, 2003). Heavy metal toxicity comprises inactivation of biomole- culesHeavy Metal Stress. Activation of Distinct Mitogen-Activated Protein Kinase Pathways by Copper, Vienna Biocenter, A­1030 Vienna, Austria Excessive amounts of heavy metals adversely affect plant growth

Hirt, Heribert

47

Colonization of heavy metal polluted soils by Collembola: preliminary1 experiments in compartmented boxes2  

E-Print Network (OSTI)

1 Colonization of heavy metal polluted soils by Collembola: preliminary1 experiments;2 Keywords: Collembola, Acidophily, Heavy metals, Migration, Sensitivity.1 2 1. Introduction3 4 The sensitivity of Collembola (Hexapoda) to heavy metals has been the subject of recent5 investigations, pointing

Paris-Sud XI, Université de

48

Novel synthetic phytochelatin-based capacitive biosensor for heavy metal ion detection  

E-Print Network (OSTI)

to increasing levels of diverse pollutants. Heavy metals represent some of the most toxic ones not only to pollution by heavy metals, and is trying to remediate, control and minimize such pollution as muchNovel synthetic phytochelatin-based capacitive biosensor for heavy metal ion detection Ibolya

Chen, Wilfred

49

Macrobenthic Community in Tolo Harbour, Hong Kong and its Relations with Heavy Metals  

E-Print Network (OSTI)

the Pearson­Rosenberg model for succession along a pollution gradient. Keywords Macrobenthos . Heavy metalMacrobenthic Community in Tolo Harbour, Hong Kong and its Relations with Heavy Metals Kouping Chen study investigated the macrobenthic community in Tolo Harbour, Hong Kong, aiming at linking heavy metal

Jiao, Jiu Jimmy

50

Temporal variation of heavy metal contamination in fish of the river lot in southern France  

E-Print Network (OSTI)

July 2009 Keywords: Heavy metals Historical pollution Freshwater fish Muscle Liver Quality index a b of intense heavy metal pollution and has been the focus of studies dating back to the 1970s (Audry et al Lot is derived from anthropogenic origin. As such, the main sources of heavy metal pollution

Grenouillet, Gael

51

IMPACT OF HEAVY METALS IN SEWAGE SLUDGE ON SOIL AND PLANTS (COLZA and WHEAT)  

E-Print Network (OSTI)

IMPACT OF HEAVY METALS IN SEWAGE SLUDGE ON SOIL AND PLANTS (COLZA and WHEAT) Najla LASSOUED1@emse.fr Abstract We are testing the impact of heavy metals in sludge from urban and industrial wastewater treatment> Cu> Ni> Co> Cd The contents of heavy metals in the sludge is made very high and exceed European

Paris-Sud XI, Université de

52

Situ formation of apatite for sequestering radionuclides and heavy metals  

DOE Patents (OSTI)

Methods for in situ formation in soil of a permeable reactive barrier or zone comprising a phosphate precipitate, such as apatite or hydroxyapatite, which is capable of selectively trapping and removing radionuclides and heavy metal contaminants from the soil, while allowing water or other compounds to pass through. A preparation of a phosphate reagent and a chelated calcium reagent is mixed aboveground and injected into the soil. Subsequently, the chelated calcium reagent biodegrades and slowly releases free calcium. The free calcium reacts with the phosphate reagent to form a phosphate precipitate. Under the proper chemical conditions, apatite or hydroxyapatite can form. Radionuclide and heavy metal contaminants, including lead, strontium, lanthanides, and uranium are then selectively sequestered by sorbing them onto the phosphate precipitate. A reducing agent can be added for reduction and selective sequestration of technetium or selenium contaminants.

Moore, Robert C. (Edgewood, NM)

2003-07-15T23:59:59.000Z

53

Surfactant biocatalyst for remediation of recalcitrant organics and heavy metals  

DOE Patents (OSTI)

Novel strains of isolated and purified bacteria have been identified which have the ability to degrade petroleum hydrocarbons including a variety of PAHs. Several isolates also exhibit the ability to produce a biosurfactant. The combination of the biosurfactant-producing ability along with the ability to degrade PAHs enhances the efficiency with which PAHs may be degraded. Additionally, the biosurfactant also provides an additional ability to bind heavy metal ions for removal from a soil or aquatic environment.

Brigmon, Robin L. (North Augusta, SC); Story, Sandra (Greenville, SC); Altman; Denis J. (Evans, GA); Berry, Christopher J. (Aiken, SC)

2011-03-29T23:59:59.000Z

54

Surfactant biocatalyst for remediation of recalcitrant organics and heavy metals  

DOE Patents (OSTI)

Novel strains of isolated and purified bacteria have been identified which have the ability to degrade petroleum hydrocarbons including a variety of PAHs. Several isolates also exhibit the ability to produce a biosurfactant. The combination of the biosurfactant-producing ability along with the ability to degrade PAHs enhances the efficiency with which PAHs may be degraded. Additionally, the biosurfactant also provides an additional ability to bind heavy metal ions for removal from a soil or aquatic environment.

Brigmon, Robin L. (North Augusta, SC); Story, Sandra (Greenville, SC); Altman, Denis J. (Evans, GA); Berry, Christopher J. (Aiken, SC)

2011-03-15T23:59:59.000Z

55

Surfactant biocatalyst for remediation of recalcitrant organics and heavy metals  

DOE Patents (OSTI)

Novel strains of isolated and purified bacteria have been identified which have the ability to degrade petroleum hydrocarbons including a variety of PAHs. Several isolates also exhibit the ability to produce a biosurfactant. The combination of the biosurfactant-producing ability along with the ability to degrade PAHs enhances the efficiency with which PAHs may be degraded. Additionally, the biosurfactant also provides an additional ability to bind heavy metal ions for removal from a soil or aquatic environment.

Brigmon, Robin L. (North Augusta, SC); Story, Sandra (Greenville, SC); Altman, Denis (Evans, GA); Berry, Christopher J. (Aiken, SC)

2009-01-06T23:59:59.000Z

56

Surfactant biocatalyst for remediation of recalcitrant organics and heavy metals  

DOE Patents (OSTI)

Novel strains of isolated and purified bacteria have been identified which have the ability to degrade petroleum hydrocarbons including a variety of PAHs. Several isolates also exhibit the ability to produce a biosurfactant. The combination of the biosurfactant-producing ability along with the ability to degrade PAHs enhances the efficiency with which PAHs may be degraded. Additionally, the biosurfactant also provides an additional ability to bind heavy metal ions for removal from a soil or aquatic environment.

Brigmon, Robin L. (North Augusta, SC); Story, Sandra (Greenville, SC); Altman, Denis J. (Evans, GA); Berry, Christopher J. (Aiken, SC)

2011-05-03T23:59:59.000Z

57

Sorption kinetic studies using metal chelate embedded polymers for recovery of heavy metals from desalination effluents  

Science Journals Connector (OSTI)

The heavy metals, such as uranium and vanadium, are some of the valuable metals in desalination effluents. Metal Chelate Embedded Polymers (MCEP) in leaflet form were prepared using the post-irradiation induced graft polymerisation technique, with different non-woven thermally bonded fibrous substrate materials. The novel sorbents, synthesised by using accelerator energy beams of 1.25 MeV and 2 MeV, were characterised for their radiation, chemical and mechanical characteristics. The novel sorbent was evaluated under different parametric conditions, in order to study the influence of grafting levels, initial concentration, dissolved solids and contact time. The standard isotherm and diffusion models were fitted to the experimental sorption data and model parameters were evaluated. The sorption characteristics of MCEP for recovery of heavy metals such as uranium and vanadium from desalination effluents were investigated.

T.L. Prasad; P.K. Tewari; D. Sathiyamoorthy

2011-01-01T23:59:59.000Z

59

Integrated Remediation Process for a High Salinity Industrial Soil Sample Contaminated with Heavy Oil and Metals  

Science Journals Connector (OSTI)

A highly saline industrial soil sample contaminated with heavy oils and several heavy metals, was tested for remediation using NRC’s Solvent Extraction Soil Remediation (SESR) process. The sample was provided ...

Abdul Majid; Bryan D. Sparks

2002-01-01T23:59:59.000Z

60

Short Communication Kinetics and thermodynamics of heavy metal ions sequestration onto novel  

E-Print Network (OSTI)

biomasses had been chosen and utilized by researchers to sequester toxic heavy metal ions from industrialShort Communication Kinetics and thermodynamics of heavy metal ions sequestration onto novel is generally considered as the most toxic metal in natural ecosystems (Clarkson, 1993). Over the years, various

Gong, Jian Ru

Note: This page contains sample records for the topic "tons heavy metal" 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

Environmental Pollution (Series B) 6 (1983)309-318 Heavy Metals in the Centipede Lithobius variegatus  

E-Print Network (OSTI)

Environmental Pollution (Series B) 6 (1983)309-318 Heavy Metals in the Centipede Lithobius) may accumulate considerable amounts of heavy metals. These authors have suggested that the high concentrations of metals in these animals may have detrimental effects on predators. However, 309 Environ. Pollut

Hopkin, Steve

62

Heavy metals in wild rice from northern Wisconsin  

Science Journals Connector (OSTI)

Wild rice grain samples from various parts of the world have been found to have elevated concentrations of heavy metals, raising concern for potential effects on human health. It was hypothesized that wild rice from north-central Wisconsin could potentially have elevated concentrations of some heavy metals because of possible exposure to these elements from the atmosphere or from water and sediments. In addition, no studies of heavy metals in wild rice from Wisconsin had been performed, and a baseline study was needed for future comparisons. Wild rice plants were collected from four areas in Bayfield, Forest, Langlade, Oneida, Sawyer and Wood Counties in September, 1997 and 1998 and divided into four plant parts for elemental analyses: roots, stems, leaves and seeds. A total of 194 samples from 51 plants were analyzed across the localities, with an average of 49 samples per part depending on the element. Samples were cleaned of soil, wet digested, and analyzed by ICP for Ag, As, Cd, Cr, Cu, Hg, Mg, Pb, Se and Zn. Roots contained the highest concentrations of Ag, As, Cd, Cr, Hg, Pb, and Se. Copper was highest in both roots and seeds, while Zn was highest just in seeds. Magnesium was highest in leaves. Seed baseline ranges for the 10 elements were established using the 95% confidence intervals of the medians. Wild rice plants from northern Wisconsin had normal levels of the nutritional elements Cu, Mg and Zn in the seeds. Silver, Cd, Hg, Cr, and Se were very low in concentration or within normal limits for food plants. Arsenic and Pb, however, were elevated and could pose a problem for human health. The pathway for As, Hg and Pb to the plants could be atmospheric.

James P. Bennett; Esteban Chiriboga; John Coleman; Donald M. Waller

2000-01-01T23:59:59.000Z

63

Sorption of heavy metals by modified chelating ion exchangers  

Science Journals Connector (OSTI)

Satisfactory sorption capacity towards heavy metals of several physically modified chelating resins at low pH is reported. It was found that the linear sorption isotherms are the most appropriate for describing the sorption of Ni and Pb. The data obtained revealed that the chelating resins studied are able to remove selectively copper from a complex synthetic solution containing Fe, Mn and Pb. The regeneration of Lewatit TP 208 by 10% H2SO4 in batch conditions proved to be effective through three consecutive runs of loading-regeneration.

Valentin Nenov; Bogdan Bonev

2010-01-01T23:59:59.000Z

64

E-Print Network 3.0 - avoid heavy metals Sample Search Results  

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

c Springer 2006 Summary: Springer 2006 AVAILABILITY AND ASSESSMENT OF FIXING ADDITIVES FOR THE IN SITU REMEDIATION OF HEAVY METAL... amendments for the in situ...

65

Impact of Sediment Resuspension Events on the Availability of Heavy Metals in Freshwater Sediments.  

E-Print Network (OSTI)

??Release of heavy metals during sediment resuspension is an understudied problem that may be cause for environmental concern. Common activities such as shipping and dredging… (more)

Eggleston, Michael

2012-01-01T23:59:59.000Z

66

E-Print Network 3.0 - assess heavy metals Sample Search Results  

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

Submitted to Summary: and organic pollutants that include heavy metals, PAHs, PCBs, dioxins, and furans that have deleterious... environmental effects. For example, sediment...

67

Method of removal of heavy metal from molten salt in IFR fuel pyroprocessing  

SciTech Connect

An electrochemical method of separating heavy metal values from a radioactive molten salt including Li halide at temperatures of about 500{degree}C. The method comprises positioning a solid Li-Cd alloy anode in the molten salt containing the heavy metal values, positioning a Cd-containing cathode or a solid cathode positioned above a catch crucible in the molten salt to recover the heavy metal values, establishing a voltage drop between the anode and the cathode to deposit material at the cathode to reduce the concentration of heavy metals in the salt, and controlling the deposition rate at the cathode by controlling the current between the anode and cathode.

Gay, E.C.

1993-12-23T23:59:59.000Z

68

Method of removal of heavy metal from molten salt in IFR fuel pyroprocessing  

DOE Patents (OSTI)

An electrochemical method of separating heavy metal values from a radioactive molten salt including Li halide at temperatures of about 500.degree. C. The method comprises positioning a solid Li--Cd alloy anode in the molten salt containing the heavy metal values, positioning a Cd-containing cathode or a solid cathode positioned above a catch crucible in the molten salt to recover the heavy metal values, establishing a voltage drop between the anode and the cathode to deposit material at the cathode to reduce the concentration of heavy metals in the salt, and controlling the deposition rate at the cathode by controlling the current between the anode and cathode.

Gay, Eddie C. (Park Forest, IL)

1995-01-01T23:59:59.000Z

69

Practical Materials for Heavy Metal Ion Chelation: PolyethylenimPractical Materials for Heavy Metal Ion Chelation: Polyethyleniminesines tailored onto The Surface oftailored onto The Surface of Porous SilicaPorous Silica  

E-Print Network (OSTI)

Practical Materials for Heavy Metal Ion Chelation: PolyethylenimPractical Materials for Heavy Metal *presenting author INTRODUCTION As a result of heavy metal ion release from industrial wastewater, water pollution has become a serious problem. Waste streams contain solutions of metal ions, such as copper

Taralp, Alpay

70

Attrition resistant catalysts and sorbents based on heavy metal poisoned FCC catalysts  

DOE Patents (OSTI)

A heavy metal poisoned, spent FCC catalyst is treated by chemically impregnating the poisoned catalyst with a new catalytic metal or metal salt to provide an attrition resistant catalyst or sorbent for a different catalytic or absorption process, such as catalysts for Fischer-Tropsh Synthesis, and sorbents for removal of sulfur gases from fuel gases and flue-gases. The heavy metal contaminated FCC catalyst is directly used as a support for preparing catalysts having new catalytic properties and sorbents having new sorbent properties, without removing or passivating the heavy metals on the spent FCC catalyst as an intermediate step.

Gangwal, S.; Jothimurugesan, K.

1999-07-27T23:59:59.000Z

71

Attrition resistant catalysts and sorbents based on heavy metal poisoned FCC catalysts  

DOE Patents (OSTI)

A heavy metal poisoned, spent FCC catalyst is treated by chemically impregnating the poisoned catalyst with a new catalytic metal or metal salt to provide an attrition resistant catalyst or sorbent for a different catalytic or absorption processes, such as catalysts for Fischer-Tropsh Synthesis, and sorbents for removal of sulfur gasses from fuel gases and flue-gases. The heavy metal contaminated FCC catalyst is directly used as a support for preparing catalysts having new catalytic properties and sorbents having new sorbent properties, without removing or "passivating" the heavy metals on the spent FCC catalyst as an intermediate step.

Gangwal, Santosh (Cary, NC); Jothimurugesan, Kandaswamy (Hampton, VA)

1999-01-01T23:59:59.000Z

72

Phytoremediation of Heavy Metal Toxicity and Role of soil in Rhizobacteria  

E-Print Network (OSTI)

Abstract- Our surrounding is filled up with a large number of toxicants in different forms. They contaminate our water, land and atmosphere where we live. Heavy metal pollution of soil is a significant environmental problem and has its negative impact on human health and agriculture. Rhizosphere, as an important interface of soil and plant, plays a significant role in phytoremediation of contaminated soil by heavy metals, in which, microbial populations are known to affect heavy metal mobility and availability to the plant through release of chelating agents, acidification, phosphate solubilization and redox changes. Phytoremediation of toxic heavy metals could be carried out by using specific metallophytes. Green plants are the lungs of nature with unique ability to purifying impure air by photosynthesis and remove or minimize heavy metals toxicity from soil and water ecosystem by absorption, accumulation and biotransformation process. This article paper reviews some recent advances in effect and significance of rhizobacteria in phytoremediation of heavy metal toxicity in contaminated soils. There is also a need to improve our understanding of the mechanisms involved in the transfer and mobilization of heavy metals by rhizobacteria and to conduct research on the selection of microbial isolates from Rhizosphere of plants growing metal contaminated soils for specific restoration programmes. Index Terms- Environmental, heavy metal toxicity,

Rajendra Prasad Bharti; Abhilasha Shri Vastava; Kishor Soni; Asha Tiwari; Shivbhanu More

73

Effect of the militarily-relevant heavy metals, depleted uranium and heavy metal tungsten-alloy on gene expression in human liver carcinoma cells (HepG2)  

Science Journals Connector (OSTI)

Depleted uranium (DU) and heavy-metal tungsten alloys ... in military applications. Chemically similar to natural uranium, but depleted of the higher activity 235U and 234U...in vitro. Using insoluble DU-UO2 and ...

Alexandra C. Miller; Kia Brooks; Jan Smith…

2004-01-01T23:59:59.000Z

74

Heavy Metal Contaminated Sediments of Lower Passaic River, New Jersey USA Victor Onwueme1  

E-Print Network (OSTI)

Heavy Metal Contaminated Sediments of Lower Passaic River, New Jersey USA Victor Onwueme1 , Huan benchmarks and probable ecological stressors. Heavy metals remains chemicals of concern in the Passaic River of toxic chemicals throughout the river, whose concentrations greatly exceed the sediment quality

Brookhaven National Laboratory

75

Heavy Metals contamination in two bioluminescent bays of Puerto Rico Yadira Soto Viruet  

E-Print Network (OSTI)

1 Heavy Metals contamination in two bioluminescent bays of Puerto Rico Yadira Soto Viruet #802 characteristics. The main purpose of this research was to evaluate the presence of heavy metals of pesticides for agriculture, untreated wastewater and variety of industrial activities (power plants, oil

Gilbes, Fernando

76

Development of protein based bioremediation and drugs for heavy metal toxicity  

SciTech Connect

Structural studies were performed on several proteins of the bacterial detoxification system. These proteins are responsible for binding (MerP) and transport of heavy metals, including mercury, across membranes. The structural information obtained from NMR experiments provides insight into the selectivity and sequestration processes towards heavy metal toxins.

Opella, Stanley J.

2001-09-18T23:59:59.000Z

77

Portable X-Ray, K-Edge Heavy Metal Detector  

SciTech Connect

The X-Ray, K-Edge Heavy Metal Detection System was designed and built by Ames Laboratory and the Center for Nondestructive Evaluation at Iowa State University. The system uses a C-frame inspection head with an X-ray tube mounted on one side of the frame and an imaging unit and a high purity germanium detector on the other side. the inspection head is portable and can be easily positioned around ventilation ducts and pipes up to 36 inches in diameter. Wide angle and narrow beam X-ray shots are used to identify the type of holdup material and the amount of the contaminant. Precise assay data can be obtained within minutes of the interrogation. A profile of the containerized holdup material and a permanent record of the measurement are immediately available.

Fricke, V.

1999-10-25T23:59:59.000Z

78

Uranium and other heavy metals in the plant-animal-human food chain near abandoned mining sites and structures in an American Indian community in northwestern New Mexico  

E-Print Network (OSTI)

agent (U and other heavy metal toxicants). The environmentM=6.59, SD=3.87). The heavy metal toxicity levels for sheepFor Sheep 1, heavy metal water toxicity levels were not

Samuel-Nakamura, Christine

2013-01-01T23:59:59.000Z

79

Dendrochronology and heavy metal depsosition in tree rings of baldcypress  

SciTech Connect

A chronology (1895-present) based on tree-ring increments was constructed for baldcypress (Taxodium distichum L.) trees in Bayou Trepagnier, in southern Louisiana. The best indicator of growth was precipitation in February of the preceding year and October of the 2 previous years. Crossdated cores were used to reconstruct large historical natural environmental perturbations (hurricanes). Heavy metals and organic pollutants from oil refineries and other sources contaminated the bayou commencing in the early 1900s. The Pb and Zn content of 50 trees along Bayou Trepagnier, analyzed in the growth rings of tree cores using x-ray fluorescent spectrometry, produced an historical record of pollution. Highlevels of contamination of Pb, as well as Zn, could be correlated with establishment of petroleum refineries (1916) and dredging (1930-1950) of the area, which created spoil banks containing high levels (ca. 300-1600 mg/kg [ppm] Pb) of heavy metals. Concentrations of Pb, per tree, ranged form 0.6 to 14 mg/kg (ppm). Trees in the upper protion of the bayou (near the refiney) contained an average of 4.5 mg/kg (ppm) Pb; trees in the lower portion averaged 2.2 mg/kg (ppm). Concentrations of Zn per tree ranged from 1.7 to 14.8 mg/kg (ppm), but in contrast with Pb did not correlate with distance from pollution sources; trees averaged 5.5 and 5.4 mg/kg (ppm) Zn in the upper and lower portions, respectively, of Bayou Trepagnier. Levels of Pb and Zn in a control ecosystem, Stinking Bayou, were 1.0 and 5.2 mg/kg (ppm), respectively. 39 refs., 7 figs., 2 tabs.

Latimer, S.D.; Ellgaard, E.G.; Kumar, S.D. [Tulane Univ., New Orleans, LA (United States)] [and others

1996-11-01T23:59:59.000Z

80

Reduction of Heavy Metals by Cytochrome c(3)  

SciTech Connect

We report on reduction and precipitation of Se(VI), Pb(II), CU(II), U(VI), Mo(VI), and Cr(VI) in water by cytochrome c{sub 3} isolated from Desulfomicrobium baczdatum [strain 9974]. The tetraheme protein cytochrome c{sub 3} was reduced by sodium dithionite. Redox reactions were monitored by UV-visible spectroscopy of cytochrome c{sub 3}. Analytical electron microscopy work showed that Se(VI), Pb(II), and CU(II) were reduced to the metallic state, U(W) and Mo(W) to U(IV) and Mo(IV), respectively, and Cr(VI) probably to Cr(III). U(IV) and Mo(W) precipitated as oxides and Cr(III) as an amorphous hydroxide. Cytochrome c{sub 3} was used repeatedly in the same solution without loosing its effectiveness. The results suggest usage of cytochrome c{sub 3} to develop innovative and environmentally benign methods to remove heavy metals from waste- and groundwater.

ABDELOUAS,A.; GONG,W.L.; LUTZE,W.; NUTTALL,E.H.; SPRAGUE,F.; SHELNUTT,JOHN A.; STRIETELMEIER,B.A.; FRANCO,R.; MOURA,I.; MOURA,J.J.G.

2000-01-18T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

INTERPRETING THE RESULTS OF SOIL TESTS FOR HEAVY METALS Vern Grubinger and Don Ross, University of Vermont  

E-Print Network (OSTI)

toxicity of a heavy metal will be affected by soil texture, organic matter, and pH. The health effects1 INTERPRETING THE RESULTS OF SOIL TESTS FOR HEAVY METALS Vern Grubinger and Don Ross, University of Vermont Agricultural soils normally contain low background levels of heavy metals. Contamination from

Hayden, Nancy J.

82

Environmental Pollution (Series B) 9 (1985) 239-254 Heavy Metals in Isopods from the Supra-littoral Zone  

E-Print Network (OSTI)

Environmental Pollution (Series B) 9 (1985) 239-254 Heavy Metals in Isopods from the Supra were very small. The hepatopancreas was the most important storage organ oj'heavy metals and, at all of heavy metals were compared in the tissues oiL. oceanica and in two 'more terrestrial' isopods, Oniscus

Hopkin, Steve

83

Heavy metals in water base drilling muds used in several locations of oil fields in Indonesia  

SciTech Connect

Heavy metals are parameters to be considered among other parameters such as pH, salts, hydrocarbons, cutting and fluids when water base muds are to be disposed. In most cases reducing or eliminating heavy metals, either as additives or contaminants, will reduce the problems associated with disposal. Even if all heavy metals are eliminated from the additives placed in a mud system, however, these contaminants can still become incorporated into the mud from the formation that is being drilled. In Indonesia, drilling muds are classified as hazardous material according to the Governmental Regulation PP 19/1994. This paper try to investigate the concentration of some of heavy metals in drilling muds used in several locations of oil fields in Indonesia using Toxicity Characteristic Leaching Procedure (TCLP) extracted with several acids and other extracting agents. {open_quotes}Total heavy metals{close_quotes} content as released through refluxing in strong acids are also determined to correlate between Total Heavy Metals and Extractable Heavy Metals, in order to examine the type of compounds which could be considered as potential pollutants.

Mulyono, M.; Desrina, R.; Priatna, R. [and others

1996-12-31T23:59:59.000Z

84

Ecological risk of heavy metal hotspots in topsoils in the Province of Golestan, Iran  

Science Journals Connector (OSTI)

Abstract Human activities, such as agriculture or mining, are a continuous source of risk for heavy metal pollution that seriously disturbs the soil environment. Massive efforts are being made to identify the tools to determine indicators of soil quality condition. This study characterises and evaluates the heavy metal (Cd, Cu, Ni, Pb and Zn) contents in the Province of Golestan (northern Iran). Pollution was assessed using the pollution index (PI) and the integrated pollution index (IPI). The potential harmful effects of these heavy metals were evaluated by the Potential Ecological Risk Index (PERI) Method. Kernel density estimation (KDE) and Local Moran's I were used for the hotspot analysis of soil pollution from a set of observed hazard occurrences. In all, 346 topsoils were examined, which represent three areas, approximately including the middle-south, west and north-east areas in this region. The heavy metal concentrations in the analysed samples did not generally present high values, despite anthropic heavy metal input. However, the potential ecological risk indexes (RI) indicated that approximately 68% and 5% of the study samples had medium and high pollution levels, respectively. Multiple hotspots for the above five heavy metals were located in the middle-south and west study areas. This anthropic heavy metal input is related to mining, agricultural practices and vehicle emissions. It was concluded that a moderate and high potential ecological risk covered about 90% of this province. In contrast, the natural origin input became more marked on a long spatial scale.

Rouhollah Mirzaei; Hadi Ghorbani; Naser Hafezi Moghaddas; José Antonio Rodríguez Martín

2014-01-01T23:59:59.000Z

85

Heavy Metal Tolerance in Stenotrophomonas maltophilia Delphine Pages1,2,3  

E-Print Network (OSTI)

Heavy Metal Tolerance in Stenotrophomonas maltophilia Delphine Pages1,2,3 , Jerome Rose4 , Sandrine, this bacterium tolerates high levels (0.1 to 50 mM) of various toxic metals, such as Cd, Pb, Co, Zn, Hg, Ag mechanisms to overcome metal toxicity, reduction of oxyanions to non-toxic elemental ions and detoxification

Paris-Sud XI, Université de

86

Determining the Heavy Metal Pollution in Mascara (Algeria) by Using Casuarina equisetifolia  

E-Print Network (OSTI)

Abstract. In this study, Casuarina equisetifolia needles were evaluated as the possible biomonitors of heavy metal air pollution in Mascara (Algeria). The needles were sampled from seven locations with different degrees of metal pollution (near roads) and from a control site. The concentrations of lead, zinc, copper and nickel were measured by using a flame atomic absorption spectrophotometer. The maximal values of these four metals were found in the samples collected near the roads and the minimal values were found in the control site. Furthermore, sites with high traffic density and frequency of cars stoppage showed high heavy metal concentrations. However, the comparison of concentrations of all metals showed that the zinc one had the highest concentration of all. The cluster analysis divided the selected sampling sites in three distinct clusters. With regard to the results of this study, Casuarina equisetifolia can be successfully applied in biomonitoring of air pollution. Key words: Casuarina equisetifolia, Mascara, biomonitors, pollution, heavy metals.

Lakhdari Aissa; Benabdeli Kéloufi

87

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

SciTech Connect

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

88

Heavy metal pollution in the territory of Chelyabinsk upon coal combustion  

Science Journals Connector (OSTI)

The pollution of the territory of Chelyabinsk by heavy metals (Cu, Co, Ni, Zn, Pb, Cd, Cr, Mo, and Hg) upon coal combustion is evaluated. The concentrations of Zn, Pb, Cd, and Hg in the soils of this territory...

R. V. Galiulin; R. A. Galiulina

2013-03-01T23:59:59.000Z

89

Method of removal of heavy metal from molten salt in IFR fuel pyroprocessing  

DOE Patents (OSTI)

An electrochemical method is described for separating heavy metal values from a radioactive molten salt including Li halide at temperatures of about 500 C. The method comprises positioning a solid Li--Cd alloy anode in the molten salt containing the heavy metal values, positioning a Cd-containing cathode or a solid cathode positioned above a catch crucible in the molten salt to recover the heavy metal values, establishing a voltage drop between the anode and the cathode to deposit material at the cathode to reduce the concentration of heavy metals in the salt, and controlling the deposition rate at the cathode by controlling the current between the anode and cathode. 3 figs.

Gay, E.C.

1995-10-03T23:59:59.000Z

90

Heavy-Metal Stress and Developmental Patterns of Arbuscular Mycorrhizal Fungi  

Science Journals Connector (OSTI)

...in large-scale atmospheric pollution of the northern hemisphere...1997. Effect of heavy metal pollution on mycorrhizal colonization...Effect of vehicular lead pollution on phylloplane mycoflora...microorganisms and invertebrates. Water Air Soil Pollut. 47: 189-215...

Teresa E. Pawlowska; Iris Charvat

2004-11-01T23:59:59.000Z

91

Mineral surfaces and bioavailability of heavy metals: A molecular-scale perspective  

Science Journals Connector (OSTI)

...prioritize remediation efforts and to...example, “water–rock” interactions...approach are remediation efforts and...in drinking water in Bangladesh...prioritize remediation efforts and...geochemistry ground water heavy metals...

Gordon E. Brown; Jr.; Andrea L. Foster; John D. Ostergren

1999-01-01T23:59:59.000Z

92

Statistical Analysis Of Heavy Metals Concentration In Watermelon Plants Irrigated By Wastewater  

Science Journals Connector (OSTI)

Concentration of heavy metals in vegetables irrigated by urban wastewater is a cause of serious concern due to the potentials health problems of consuming contaminated produce. In this study it is tried to model the concentration of heavy metals (Cd Cr Cu Fe …) as a function of their concentration in watermelon roots and stems. Our study shows there is a good relationship between them for most of collected data. By measuring the concentration in root and stem of watermelon plant samples before harvesting the concentration of heavy metal in watermelon's fruit can be estimated by presented mathematical models. This study shows the concentrations of heavy metals in fruits roots and stems of watermelon plants are very high and in dangerous level when irrigated by municipal waste water.

M. J. Khanjani; A. A. Maghsoudi moud; V. R. Saffari; S. M. Hashamipor; M. Soltanizadeh

2008-01-01T23:59:59.000Z

93

E-Print Network 3.0 - aquatic heavy metals Sample Search Results  

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

Principles of Ecotoxicology, SCOPE Report 12, Chapter 11, pp 239-255. Heavy metals, Pollutants, Toxicity... fIJJ US Army Corps of Engineers AQUATIC PLANT CONTROL RESEARCH PROGRAM...

94

The Effects of Heavy Metals (other than Mercury) on Marine and Estuarine Organisms  

Science Journals Connector (OSTI)

...of heavy metals is described in terms of their absorption, storage, excretion and regulation when different concentrations are...Industrial Waste Lead toxicity Marine Biology Mollusca drug effects Seawater Sewage Water Pollution Zinc toxicity The Royal Society is collaborating...

1971-01-01T23:59:59.000Z

95

Silica coated magnetite nanoparticles for removal of heavy metal ions from polluted waters  

E-Print Network (OSTI)

Magnetic removal of Hg2+ and other heavy metal ions like Cd2+, Pb2+ etc. using silica coated magnetite particles from polluted waters is a current topic of active research to provide efficient water recycling and long term high quality water. The technique used to study the bonding characteristics of such kind of nanoparticles with the heavy metal ions is a very sensitive hyperfine specroscopy technique called the perturbed angular correlation technique (PAC).

Dash, Monika

2013-01-01T23:59:59.000Z

96

The role of mycorrhizal fungi in the uptake of heavy metals by Salix. A preproposal for the McIntire-Stennis Research Program  

E-Print Network (OSTI)

, either to protect the willow against heavy metal toxicity, or to sequester the heavy metals fromThe role of mycorrhizal fungi in the uptake of heavy metals by Salix. A preproposal for the Mc fungi produce bioactive peptides (e.g. siderophores or phytochelatins) in response to heavy metal stress

Chatterjee, Avik P.

97

TO THE 1979 CONVENTION ON LONG-RANGE TRANSBOUNDARY AIR POLLUTION ON HEAVY METALS The Parties,  

E-Print Network (OSTI)

Determined to implement the Convention on Long-range Transboundary Air Pollution, Concerned that emissions of certain heavy metals are transported across national boundaries and may cause damage to ecosystems of environmental and economic importance and may have harmful effects on human health, Considering that combustion and industrial processes are the predominant anthropogenic sources of emissions of heavy metals into the atmosphere, Acknowledging that heavy metals are natural constituents of the Earth's crust and that many heavy metals in certain forms and appropriate concentrations are essential to life, Taking into consideration existing scientific and technical data on the emissions, geochemical processes, atmospheric transport and effects on human health and the environment of heavy metals, as well as on abatement techniques and costs, Aware that techniques and management practices are available to reduce air pollution caused by the emissions of heavy metals, Recognizing that countries in the region of the United Nations Economic Commission for Europe (UNECE) have different economic conditions, and that in certain countries the economies are in transition,

unknown authors

98

High Pressure Phase Transformations in Heavy Rare Earth Metals and Connections to Actinide Crystal Structures  

SciTech Connect

High-pressure studies have been performed on heavy rare earth metals Terbium (Tb) to 155 GPa and Holmium (Ho) to 134 GPa in a diamond anvil cell at room temperature. The following crystal structure sequence was observed in both metals hcp {yields} Sm-type {yields} dhcp {yields} distorted fcc (hR-24) {yields} monoclinic (C2/m) with increasing pressure. The last transformation to a low symmetry monoclinic phase is accompanied by a volume collapse of 5 % for Tb at 51 GPa and a volume collapse of 3 % for Ho at 103 GPa. This volume collapse under high pressure is reminiscent of f-shell delocalization in light rare earth metal Cerium (Ce), Praseodymium (Pr), and heavy actinide metals Americium (Am) and Curium (Cm). The orthorhombic Pnma phase that has been reported in Am and Cm after f-shell delocalization is not observed in heavy rare earth metals under high pressures. (authors)

Vohra, Yogesh K.; Sangala, Bagvanth Reddy; Stemshorn, Andrew K. [Physics, University of Alabama at Birmingham (UAB), 310 Campbell Hall, 1300 University Boulevard, Birmingham, AL, 35294-1170 (United States); Hope, Kevin M. [Biology, Chemistry, and Mathematics, University of Montevallo, Harman Hall, Station 6480, Montevallo, AL, 35115 (United States)

2008-07-01T23:59:59.000Z

99

Effects of maternal exposure to six heavy metals on fetal development  

SciTech Connect

The authors previously studied the relationship of seven heavy metals between maternal and fetal samples collected from normal pregnant Japanese women and positive correlations of mercury, lead(Pb), cadmium(Cd), and manganese(Mn) contents were found between maternal and cord blood whereas they were not found as to essential metals such as copper (Cu), zinc(Zn) and iron(Fe), they pointed out the more serious influence of heavy metals on the neonates than on their mothers as the results of both the higher contents and the correlative behavior of toxic metals in cord blood. In the present investigation, an attempt has been made to ascertain the maternofetal relationship found in the human pregnancy by the use of experimental animals as the first step of the study on the fetotoxicity resulted from the maternal exposure to combined heavy metals.

Tsuchiya, H.; Shima, S.; Kurita, H.; Ito, T.; Kato, Y.; Kato, Y.; Tachikawa, S.

1987-04-01T23:59:59.000Z

100

Effect of heavy metals ions on enzyme activity in the Mediterranean mussel, Donax trunculus  

SciTech Connect

Heavy metal ions strongly are bound by sulfhydryl groups of proteins. Sulfhydryl binding changes the structure and enzymatic activities of proteins and causes toxic effects evident at the whole organism level. Heavy metal ions like Cd, Cu, Hg, Zn, and Pb in sufficiently high concentrations might kill organisms or cause other adverse effects that changing aquatic community structures. Bivalves are known to be heavy metal accumulators. The aim of the present study was to examine the effects of different concentrations of each of five heavy metal ions on the activity of four enzymes in D. trunculus. As it is known that heavy metals inhibit the activity of a wide range of enzymes, the authors chose representative examples of dehydrogenases (lactate and malate dehydrogenases), respiratory enzyme (cytochrome oxidase) and digestive enzyme ({alpha}-amylase). The acute effects of different concentrations of selected metals were examined. These concentrations were higher than those found usually in the locality where the animals occur, but might be encountered during a given event of pollution.

Mizrahi, L.; Achituv, Y. (Bar Ilan Univ., Ramat-Gan (Israel))

1989-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

Heavy Metal Contamination In Soil Under The Application Of Polluted Sewage Water Across Vrishabhavathi River  

E-Print Network (OSTI)

The main aim in this study is to assess the level of heavy metals concentration in soil profile and their mobility in the presence of pH and organic carbon,where polluted water is used in agriculture. The samples of soil collected at different sites across Vrishabhavathi river valley have been analyzed for heavy metals, viz. Pb, Zn, Cd, Cr, Cu, Ni, Fe and Mn using atomic absorption spectrophotometer. These values assessed with respect to reference soil taken from unpolluted soil profile. The heavy metals studied at all sampling sites compared with Indian Standards and all heavy metals are below permissible limits. The concentration of all the metals is high compared to the soil sample taken from unpolluted site shows the build up of heavy metal concentration using polluted water in irrigation. The % of organic carbon varies from 1.9 to 2.9 % in top layer and 1 to 1.6 % in the subsequent layer. The pH value is higher on top layer soil and decreases in subsequent layer.

Jayadev E. T. Puttaih

102

Sedimentation and chronology of heavy metal pollution in Oslo harbor, Norway Aivo Lepland a,*, Thorbjrn J. Andersen b  

E-Print Network (OSTI)

Sedimentation and chronology of heavy metal pollution in Oslo harbor, Norway Aivo Lepland a that pollution by these metals peaked between 1940 and 1970. Dating results indicate that Hg discharges peaked such as heavy metals and organic pollu- tants are typically scavenged by suspended, fine-grained, mineral

Alve, Elisabeth

103

Heavy metal balances of an Italian soil as affected by sewage sludge and Bordeaux mixture applications  

SciTech Connect

Applications of sewage sludge and Bordeaux mixture (Bm) (a mixture of copper sulfate and lime) add heavy metals to the soil. At an experimental farm in the Cremona district (Italy), the authors measured current heavy metal contents in soil and their removal via harvested products. They also measured heavy metal adsorption by soil from this farm. With these data, projections were made of the long-term development of heavy metal (Cd, Cu, and Zn) contents in soil, crop removal, and leaching at different application rates of sewage sludge and Bm. These projections were compared with existing quality standards of the European Union (EU) and Italy with regard to soil and groundwater. The calculations reveal that the permitted annual application rates of sewage sludge and Bm are likely to result in exceedance of groundwater and soil standards. Sewage sludge applications, complying with the Italian legal limits, may pose problems for Cd, Cu, and Zn within 30, 70, and 100 yr, respectively. Furthermore, severe Cu pollution of integrated and especially organic (Bm only) vineyards is unavoidable with the currently allowed application rates of Bm. The results suggest that the current Italian soil protection policy as well as the EU policy are not conducive of a sustainable heavy metal management in agroecosystems.

Moolenaar, S.W. [Wageningen Agricultural Univ. (Netherlands); Beltrami, P. [Univ. Cattolica del Sacro Cuore, Piacenza (Italy)

1998-07-01T23:59:59.000Z

104

Study of the mechanisms of heavy metal sorption by mineral apatite: the feasibility of soil and ground water remediation.  

E-Print Network (OSTI)

??In this work, the mechanisms of heavy metal sorption by two forms of mineral apatite were studied. The materials used include synthetic hydroxyapatite (HAP) and… (more)

Kalu?erovi?-Radoi?i? Tatjana

2010-01-01T23:59:59.000Z

105

Towards a more quantitative understanding of the complex interactions between natural organic matter, heavy metals, and goethite.  

E-Print Network (OSTI)

??Dissolved natural organic matter (NOM) and heavy metals are ubiquitous in aqueous and terrestrial systems. Adsorption processes involving mineral surfaces largely control the fate, transport,… (more)

Arthurs, Leilani

2008-01-01T23:59:59.000Z

106

Method for removal of heavy metal from molten salt in IFR fuel pyroprocessing  

SciTech Connect

This report details the pyrometallurgical process for recycling spent metal fuels from the Integral Fast Reactor (IFR) which involves electrorefining spent fuel in a molten salt electrolyte (LiCl-KCI-U/PuCl{sub 3}) at 500{degree}C. The total heavy metal chloride concentration in the salt will be about 2 mol %. At some point, the concentrations of alkali, alkaline earth, and rare earth fission products in the salt must be reduced to lower the amount of heat generated in the electrorefiner. The heavy metal concentration in the salt must be reduced before removing the fission products from the salt. The operation uses a lithium-cadmium alloy anode that is solid at 500{degree}C, a solid mandrel cathode with a ceramic catch crucible below to collect heavy metal that falls off it, and a liquid cadmium cathode. The design criteria that had to be met by this equipment included the following: (1) control of the reduction rate by lithium, (2) good separation between heavy metal and rare earths, and (3) the capability to collect heavy metal and rare earths over a wide range of salt compositions. In tests conducted in an engineering-scale electrorefiner (10 kg uranium per cathode), good separation was achieved while removing uranium and rare earths from the salt. Only 13% of the rare earths was removed, while 99.9% of the uranium in the salt was removed; subsequently, the rare earths were also reduced to low concentrations. The uranium concentration in the salt was reduced to 0.05 ppm after uranium and rare earths were transferred from the salt to a solid mandrel cathode with a catch crucible. Rare earth concentrations in the salt were reduced to less than 0.01 wt % in these operations. Similar tests are planned to remove plutonium from the salt in a laboratory-scale (100--300 g heavy metal) electrorefiner.

Gay, E.C.; Miller, W.E.; Laidler, J.J.

1994-02-01T23:59:59.000Z

107

(Data in thousand metric tons of silicon content unless otherwise noted) Domestic Production and Use: Estimated value of silicon metal and alloys (excluding semiconductor-grade silicon)  

E-Print Network (OSTI)

%; China, 16%; South Africa, 13%; Canada, 12%; and other, 39%. Tariff: Item Number Normal Trade Relations metal: Brazil, 37%; South Africa, 25%; Canada, 14%; Norway, 6%; and other, 18%. Total: Brazil, 20 energy costs. Demand for silicon metal comes primarily from the aluminum and chemical industries

108

(Data in thousand metric tons of silicon content unless otherwise noted) Domestic Production and Use: Estimated value of silicon alloys and metal (excluding semiconductor-and solar-  

E-Print Network (OSTI)

Production and Use: Estimated value of silicon alloys and metal (excluding semiconductor- and solar- grade and aluminum alloys and the chemical industry. The semiconductor and solar industries, which manufacture chips%; Venezuela, 15%; Canada, 8%; and other, 8%. Silicon metal: Brazil, 38%; South Africa, 24%; Canada, 16

109

SEPARATION OF HEAVY METALS: REMOVAL FROM INDUSTRIAL WASTEWATERS  

Office of Scientific and Technical Information (OSTI)

a two- or three-stage operation to remove the metals and 0il sepcrately). ComplexationSequestration Complexation involves the formation of a complex or chelating agent....

110

Mass balance of heavy metals in New Haven Harbor, Connecticut ...  

Science Journals Connector (OSTI)

ABSTRACT: A mass balance was constructed quantifying all known sources and sinks for the metals Ag, Cd, Cu, and Pb in New Haven Harbor, Connecticut, ...

111

The Fate of Heavy Metals in Highway Stormwater Runoff: The Characterization of a Bioretention Basin in the Midwest  

E-Print Network (OSTI)

The usual wear of automobiles and road surfaces deposits numerous environmental pollutants on roadways and parking lots, including heavy metals such as copper, zinc, lead, nickel and cadmium. During rainfall and snow events, these metals are washed...

Lacy, Sarah

2009-01-01T23:59:59.000Z

112

Determination of heavy metal pollution in Zonguldak (Turkey) by moss analysis (hypnum cupressiforme)  

SciTech Connect

This paper explores the first attempt at determining the levels of atmospheric heavy metal contamination in the Zonguldak province through the analysis of moss (Hypnum cupressiforme Hedw.). Sampling was performed at 24 sites after a wet period to avoid contamination from soil compounds in the province. Dried samples, which were unwashed but cleaned of soil particles and other extraneous material, were digested with HNO{sub 3}/HClO{sub 4}. Concentrations of heavy metals (Fe, Cu, Pb, Cr, Co, Ni, and As) were analyzed by ICP-OES to estimate the geographic distribution of the atmospheric heavy metal depositions. The general order of the concentrations of the heavy metal content in Hypnum cupressiforme Hedw. was observed to be Fe > Pb > Cu > Ni > Cr > As > Co. Mean levels of the measured elements were higher when compared to European levels. Arsenic, iron, and chromium were the most elevated elements when compared with European data. The mean concentrations of these elements in the studied area were 8.3 (Co), 6.7 (Fe), 5.2 (Cr), 4.6 (As), and 2.7 (Ni) times the background levels of the reference site (C3). Among the studied heavy metals, only lead showed little variation in measured values due to traffic in the area. Main sources of increased heavy metal content of the moss samples were found to be: I) the Catalagzi Power Plant (CATES); ii) the Eregli Iron-Steel Plant (ERDEMIR); iii) space heating; and iv) traffic-related emissions. Results are presented in the form of color-scaled contour maps using a Geographic Information System (GIS)-based mapping technique.

Uyar, G.; Avcil, E.; Oren, M.; Karaca, F.; Oncel, M.S. [Zonguldak Karaelmas University, Zonguldak (Turkey). Faculty of Science & Arts

2009-01-15T23:59:59.000Z

113

HEAVY METAL POLLUTION IN A TROPICAL LAGOON CHILIKA LAKE, ORISSA, INDIA 1  

E-Print Network (OSTI)

Chilika lake, the largest costal lagoon of Asia is one of the most dynamic ecosystems along the Indian coast. The lagoon has undergone a considerable reduction in surface area due to input from natural process and human activities. The purpose of this investigation is to document the heavy metal concentration in sediment, surface water and possible entry to food chain. Concentration of all elements increase in the sediments in comparison to surface water. Metal ions are in the following order Mn> Mg> Ni> Cu>Zn> Cu> Pb> Cr. In the sediments heavy metals like Pb, Cd, Mn, Ni, Zn, Co are present in surface water and Mg was below detection limits. Metal concentrations in the sediment indicate an increase in the pollution load due to movement of fertilizers, agricultural water, prawn cultivation and Motor Boat operations. An immediate attention from the concerned authorities is required in order to protect the lake from further pollution.

Sagarika Nayak; Gayatri Nahak; Debyani Samantray; Rajani Kanta Sahu

114

Process for the hydrotreatment of heavy hydrocarbons in the presence of reduced metals  

SciTech Connect

A heavy hydrocarbon charge containing sulfur, asphaltenes and/or resins is hydrotreated in the liquid phase at 250/sup 0/-500/sup 0/ C. under a pressure of 20-350 bars in the presence of a catalyst previously obtained by reacting an organic compound of a transition metal with an organic aluminum compound, in a hydrocarbon free of asphaltene and resin. The transition metal organic compound is advantageously an iron, nickel, cobalt, molybdenum, tungsten or vanadium acetylacetonate or carboxylate.

Dinh, C.T.; Desvard, A.; Jacquin, Y.; Martino, G.

1984-03-06T23:59:59.000Z

115

Removal of heavy metals from effluent. (Latest citations from Pollution Abstracts database). Published Search  

SciTech Connect

The bibliography contains citations concerning the removal of lead, cadmium, mercury, and other heavy metals from waste waters. Precipitation, reverse osmosis, complexation, ultrafiltration, and adsorption are among the techniques described. The citations examine the efficiency, operational difficulties, cost effectiveness, and optimization of these methods. Prevention and remediation of metal pollution from electroplating, mining, smelting, and other industries are included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-10-01T23:59:59.000Z

116

Mercury and Other Heavy Metals Influence Bacterial Community Structure in Contaminated Streams  

E-Print Network (OSTI)

Mercury and Other Heavy Metals Influence Bacterial Community Structure in Contaminated Streams Research The influences of uranium (U), mercury (Hg) and methylmercury (MeHg) on the microbial community. #12;High concentrations of uranium, inorganic mercury, Hg(II) and methymercury (MeHg) have been

117

Hydroconversion of heavy crude oils using soluble metallic compounds in the presence of hydrogen or methane  

SciTech Connect

The hydroconversion of heavy crude oil was studied under thermal and catalytic conditions using soluble organo-metallic compounds of Mo, Fe, Cr, V, Ni, and Co as a catalyst precursors. All catalysts are effective for the hydroconversion, however, molybdenum and nickel compounds are preferred.

Morales, A.; Salazar, A.; Ovalles, C.; Filgueiras, E. [INTEVEP, Caracas (Venezuela)

1996-12-31T23:59:59.000Z

118

Heavy Element Abundances in Presolar Silicon Carbide Grains from Low-Metallicity AGB Stars  

E-Print Network (OSTI)

Heavy Element Abundances in Presolar Silicon Carbide Grains from Low-Metallicity AGB Stars Peter explosions. Silicon carbide is the best studied presolar mineral. Based on its isotopic compositions the identified presolar minerals are diamond, silicon carbide (SiC), graphite, silicon nitride (Si3N4), corundum

119

Effect of Fly Ash on Solidification and Heavy Metals Chemical Speciation of Sludge  

Science Journals Connector (OSTI)

In order to explore new municipal sewage sludge treatment method and reduce its harm for environment, fly ash discarded from power plant was used as conditioner in sludge treatment in the paper. The properties of sewage sludge were changed after adding ... Keywords: fly ash, sludge, compressive strength, heavy metal, speciation

Yongjian Piao; Mingsong Wu; Xun Xu; Qingliang Zhao; Fugui Zhang; Nanqi Ren

2011-01-01T23:59:59.000Z

120

Speciation of heavy metals in cement-stabilized waste forms: A micro-spectroscopic study  

E-Print Network (OSTI)

Assuring safe disposal and long-term storage of haz- ardous and radioactive wastes represents a primary en- vironmental task of industrial societies. The long-term disposal of the hazardous wastes is associatedSpeciation of heavy metals in cement-stabilized waste forms: A micro-spectroscopic study M. Vespa

Note: This page contains sample records for the topic "tons heavy metal" 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

Micellar enhanced ultrafiltration of heavy metals using lecithin  

E-Print Network (OSTI)

, zinc, silver, copper, and mercury are reported to be above 98%. Chaufer and Deratiani presented complexation-ultrafiltration as a means of removing metal ions with water soluble macromolecules (13). Polymers which are known to bind to metals... from each of the seven characteristic wastewaters and the average percentage of plants that generate such wastes. Table 4. Wastewater Distribution (2). Percentage of plants ihthi wa ew t 100. 0 6. 3 n/a 24. 1 13. 9 12. 9 n/a Percentage...

Ahmadi, Saman Nameghi

1992-01-01T23:59:59.000Z

122

TOLERANCE OF HEAVY METALS IN VASCULAR PLANTS: ARSENIC HYPERACCUMULATIONBY  

E-Print Network (OSTI)

the roots take up colossal amounts of a toxic metal from soils and rapidly sequester into their above-ground water contributed to countless cases of chronic arsenic poisoning in countries such as Chile, Argentina to both humans and animals, remediation of arsenic-contaminatedsites has become absolute priority

Ma, Lena

123

A Fuzzy Model of Heavy Metal Loadings in Marine Environment  

E-Print Network (OSTI)

contaminants, questions have been raised as to the environmental impact of long-term disposal in coastal areas and Morecambe Bay). Each metal concentration is associated with a fuzzy set "contaminated", defined over a set indicates all highly contaminated sites. The proposed fuzzy model is easy to implement and the results

Kuncheva, Ludmila I.

124

The Extraction of Heavy Metals by Means of a New Electrolytic Method  

SciTech Connect

The extraction of metals in known metallurgical methods is pursued on the basis of separating as much as possible the desired metal's content from the ore concentrate, in the most economical manner. When these principles are also applied to the extraction of heavy metals, the related environmental factors do not readily meet with requirements. Today, an acceptable extraction technology for metals must satisfy the need to produce the deep separation of metals from their source in both economical and environmentally safe manner. This pertains to the direction of our ongoing research and development, among others in the field of environmental remediation. Earlier, we successfully addressed in an environmentally safe manner the selective extraction of radioactive isotopes from liquid radioactive wastes, produced at Armenia's Metzamor Nuclear Power Plant and implemented a functioning LRW station at the NPP. Currently, we extended our new electrodialysis-based electrolytic method in a laboratory scale, for the extraction and deep separation of different metals, including the heavy metals. Our new method, its efficiency, economy and full compliance with environmental issues will be presented.

Guiragossian, Z. G.; Martoyan, G. A.; Injeyan, S. G.; Tonikyan, S. G.; Nalbandyan, G. G.

2003-02-25T23:59:59.000Z

125

Heavy metals emission from controlled combustion of PVC  

E-Print Network (OSTI)

, oil, and household product containers (4). The r easons for its enormous versatility and range of application, besides its relatively low cost, derive from a combination of its basic structure which gives rise to a relatively tough and rigid... salts, and later on, inorganic lead salt derivatives were used as organometallic stabilizers. Organometallic stabilizers gained wide spread popularity in rigid and plasticized PVC applications. In the early 1950's, alkaline earth metal salts were...

El-Ayyoubi, Mohammed A.

1989-01-01T23:59:59.000Z

126

Heavy metals in bivalve mussels and their habitats from different sites along the Chilean Coast  

SciTech Connect

It is well known that heavy metals have a great ecological significance due to their toxicity and accumulative behaviour playing a prominent role in marine ecosystems. They occur in all compartments in the marine environment with a tendency to accumulate in organism from different trophic levels of the marine webs. Along this pathway, toxic trace metals become a potential hazard for man and mammals. Coastal and estuarine zones are more vulnerable to anthropogenic pollution with toxic metals and it must be kept in mind that these zones have high seafood production. Chile is in a favourable position to develop fishing activities since it has approximately 4.500 km. of coastline bordering the South Pacific Ocean. The seawater is rich in nutrients and new aquaculture projects have been developed during the last year. However, these seafoods, like other marine organisms, are susceptible to being contaminated by trace metals, produced especially by the mining and industrial processing of ores and metals (i.e., Cu, Mo). This activity is well known as an important source of heavy metals, due to the enormous quantities of waste products, some of which were formerly released directly to the marine environment. Actually there are many aspects demanding better and more detailed knowledge on the occurrence, inventory, of the Chilean marine ecosystem. For these reasons we are developing a programme for monitoring some heavy metals in marine samples. The development of analytical quality control procedures and the analysis of toxic trace elements in fresh and canned mussels were recently published. In this paper, we present the results obtained for the Cadmium, Copper and Zinc contents in water, sediment and mollusc samples collected from different geographical areas located along the coast of Chile. 11 refs., 1 fig., 1 tab.

De Gregori, I.; Pinochet, H.; Delgado, D. (Catholic Univ. of Valparaiso (Chile)); Gras, N.; Munoz, L. (Nuclear Center La Reina, Santiago (Chile))

1994-02-01T23:59:59.000Z

127

Heavy metals in the eastern oyster, Crassostrea virginica, of the Mississippi Sound  

SciTech Connect

Levels of metals in oysters in the Sound are of profound interest not only because they document those geographic areas where metal pollution levels may be problematic but because they may disclose possible problems to consumers of oysters. At the present time objective federal standards for heavy metals in oysters and other seafood are restricted to mercury. The closure of Mississippi oyster reefs has been predicated upon bacteriological standards with little if any attention paid to heavy metals. A study of fourteen metals in oysters of the Sound was began in 1988 with objectives differing from that of the Status and Trends Program (STP) in three ways. STP levels are reported on dry weight basis of composites from three sites. In the present study, oysters were analyzed and reported on wet weight basis. Additionally analyses were made of individual specimens to indicate expected specimen to specimen variations and were conducted on oysters from the three STP and two other important oyster reef sites. In the future three or more additional sites will be added to this continuing survey effort. Metals chosen for this study were lead (Pb), cadmium (Cd), iron (Fe), copper (Cu), cobalt (Co), manganese (Mn), zinc (Zn), silver (Ag), nickel (Ni), mercury (Hg), aluminum (Al), chromium (Cr), molybdenum (Mo), and vanadium (V).

Lytle, T.F.; Lytle, J.S. (Gulf Coast Research Lab., Ocean Springs, MS (USA))

1990-01-01T23:59:59.000Z

128

Use of wastewater ER sludges for the immobilization of heavy metals  

SciTech Connect

The distribution, mobility, and bioavailability of heavy metals in soils, surface water, and ground water have been of major interest and concern from both environmental and geochemical standpoints. Wastewater sludges represent an important anthropogenic factor whose impact on these processes is not fully understood. In the past, incineration and landfilling were common practices for discarding wastewater sludges. However, as local and state laws governing the disposal of these materials have become more stringent, land application has been used as an alternative. Reported studies have shown that the impact of land application of sludges can vary widely and is influenced by a number of factors, including the source of the sludge; the organic matter content of the sludge; the form in which the sludge is applied; and the prevailing conditions of the receiving soils. It has also been shown that sewage sludge can have solubilizing effects on solid-phase heavy metals, thereby causing geochemical shifts of the insoluble fractions of metals to the more soluble forms. The work presented in this paper utilized synthetic minerals, standard solutions, sludges, and agricultural soils obtained from different sources to determine the mechanisms involved in the mineralization of heavy metals by sludge; the influence of soil conditions; interelemental effects; the influence of natural organic matter; and possible microbial activity that may come into play. Several types of sludge were evaluated for lead binding capacity.

Macha, S.; Murray, D.; Urasa, I.T. [Hampton Univ., VA (United States)

1996-10-01T23:59:59.000Z

129

Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in  

E-Print Network (OSTI)

Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs of metallic lead in the soil (4) Drinking water ­ water as it leaves the treatment plant has no lead;Common metals used for the supply pipe are lead, copper and galvanized iron. Also in the system

Maynard, J. Barry

130

Customizable biopolymers for heavy metal remediation Jan Kostal, Giridhar Prabhukumar, U. Loi Lao, Alin Chen, Mark Matsumoto, Ashok Mulchandani and  

E-Print Network (OSTI)

contamination by heavy metals is prevalent at hazardous waste sites in the United States. Annually, fuel for removing the polymer­metal complexes (Thompson & Jarvinen, 1999). The target metal ions can be recovered be used to remediate contaminated soils and solid surfaces and treat aqueous wastes, it can also

Chen, Wilfred

131

Abstract No. pan0505 Sorption of Heavy Metal Contaminants onto Hydrated Ferric Oxides: Mechanistic Modeling using X-ray  

E-Print Network (OSTI)

Abstract No. pan0505 Sorption of Heavy Metal Contaminants onto Hydrated Ferric Oxides: Mechanistic. Hence, to understand the mobility and bioavailability of these metal contaminants, these sorption suggesting that sorption of these metal ions onto ferrihydrite can be described by one average type of site

Sparks, Donald L.

132

Metallization of hydrogen using heavy-ion-beam implosion of multilayered cylindrical targets  

Science Journals Connector (OSTI)

Employing a two-dimensional simulation model, this paper presents a suitable design for an experiment to study metallization of hydrogen in a heavy-ion beam imploded multilayered cylindrical target that contains a layer of frozen hydrogen. Such an experiment will be carried out at the upgraded heavy-ion synchrotron facility (SIS-18) at the Gesellschaft für Schwerionenforschung, Darmstadt by the end of the year 2001. In these calculations we consider a uranium beam that will be available at the upgraded SIS-18. Our calculations show that it may be possible to achieve theoretically predicted physical conditions necessary to create metallic hydrogen in such experiments. These include a density of about 1 g/cm3, a pressure of 3–5 Mbar, and a temperature of a few 0.1 eV.

N. A. Tahir, D. H. H. Hoffmann, A. Kozyreva, A. Tauschwitz, A. Shutov, J. A. Maruhn, P. Spiller, U. Neuner, J. Jacoby, M. Roth, R. Bock, H. Juranek, and R. Redmer

2000-12-19T23:59:59.000Z

133

Comparative thermodynamic and experimental study of some heavy metal behaviours during automotive shredder residues incineration  

Science Journals Connector (OSTI)

Experimental and theoretical studies of the behaviour of some heavy metals were undertaken during Automotive Shredder Residues (ASR) incineration. A thermodynamic study at equilibrium was performed using a software minimizing the free Gibbs energy. The metals studied were barium, copper, lead and zinc. The studies were performed mostly at two temperatures: 1123 and 1373 K. The thermodynamic study showed that the chlorine content is the most important parameter influencing the volatility of the studied metals. It also showed that in default of chlorine in a system containing several metals, barium chloride in its condensed form is the most easily formed. Other metals remained in their metallic form or in the form of oxides. The presence of hydrogen in the system has a general limiting influence on the metal volatility because, especially at high temperatures, hydrogen chloride is more likely to be formed. In the experimental field, the behaviours of metals were studied using commercial polymers as waste models: a PVC mastic, a polyurethane mastic and a rubber powder. Copper and barium presented a non volatile behaviour during the incineration of waste matrixes as ASR, being present also in residual ash. On the other hand, lead was completely formed in the gas phase and zinc showed an equal partitioning between the two principal phases of the treatment. ©

G. Trouve; A. Kauffmann; L. Delfosse

1998-01-01T23:59:59.000Z

134

Removal of radioactive materials and heavy metals from water using magnetic resin  

DOE Patents (OSTI)

Magnetic polymer resins capable of efficient removal of actinides and heavy metals from contaminated water are disclosed together with methods for making, using, and regenerating them. The resins comprise polyamine-epichlorohydrin resin beads with ferrites attached to the surfaces of the beads. Markedly improved water decontamination is demonstrated using these magnetic polymer resins of the invention in the presence of a magnetic field, as compared with water decontamination methods employing ordinary ion exchange resins or ferrites taken separately. 9 figs.

Kochen, R.L.; Navratil, J.D.

1997-01-21T23:59:59.000Z

135

Fixation and partitioning of heavy metals in slag after incineration of sewage sludge  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer The contents and partitioning of HMs in slag of sludge incineration were examined. Black-Right-Pointing-Pointer The fixation rate decreases with residential time and finally keeps a constant. Black-Right-Pointing-Pointer Water mass fraction of 55% is optimal for the sediment for Ni, Mn, Zn, Cu and Cr. Black-Right-Pointing-Pointer Water mass fraction of 75% is optimal for the sediment for Pb. Black-Right-Pointing-Pointer We found higher temperature versus lower non-residual fraction except that of Pb. - Abstract: Fixation of heavy metals in the slag produced during incineration of sewage sludge will reduce emission of the metals to the atmosphere and make the incineration process more environmentally friendly. The effects of incineration conditions (incineration temperature 500-1100 Degree-Sign C, furnace residence time 0-60 min, mass fraction of water in the sludge 0-75%) on the fixation rates and species partitioning of Cd, Pb, Cr, Cu, Zn, Mn and Ni in slag were investigated. When the incineration temperature was increased from 500 to 1100 Degree-Sign C, the fixation rate of Cd decreased from 87% to 49%, while the fixation rates of Cu and Mn were stable. The maximum fixation rates for Pb and Zn and for Ni and Cr were reached at 900 and 1100 Degree-Sign C, respectively. The fixation rates of Cu, Ni, Cd, Cr and Zn decreased as the residence time increased. With a 20 min residence time, the fixation rates of Pb and Mn were low. The maximum fixation rates of Ni, Mn, Zn, Cu and Cr were achieved when the mass fraction of water in the sludge was 55%. The fixation rate of Cd decreased as the water mass fraction increased, while the fixation rate of Pb increased. Partitioning analysis of the metals contained in the slag showed that increasing the incineration temperature and residence time promoted complete oxidation of the metals. This reduced the non-residual fractions of the metals, which would lower the bioavailability of the metals. The mass fraction of water in the sludge had little effect on the partitioning of the metals. Correlation analysis indicated that the fixation rates of heavy metals in the sludge and the forms of heavy metals in the incinerator slag could be controlled by optimization of the incineration conditions. These results show how the bioavailability of the metals can be reduced for environmentally friendly disposal of the incinerator slag.

Chen Tao [State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 (China); Graduate School of Chinese Academy of Sciences, Beijing 100082 (China); Yan Bo, E-mail: yanbo2007@gig.ac.cn [State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 (China)

2012-05-15T23:59:59.000Z

136

Heavy metals in liquid pig manure in light of bacterial antimicrobial resistance  

SciTech Connect

Heavy metals are regularly found in liquid pig manure, and might interact with bacterial antimicrobial resistance. Concentrations of heavy metals were determined by atomic spectroscopic methods in 305 pig manure samples and were connected to the phenotypic resistance of Escherichia coli (n=613) against 29 antimicrobial drugs. Concentrations of heavy metals (/kg dry matter) were 0.08-5.30 mg cadmium, 1.1-32.0 mg chrome, 22.4-3387.6 mg copper, <2.0-26.7 mg lead, <0.01-0.11 mg mercury, 3.1-97.3 mg nickel and 93.0-8239.0 mg zinc. Associated with the detection of copper and zinc, resistance rates against {beta}-lactams were significantly elevated. By contrast, the presence of mercury was significantly associated with low antimicrobial resistance rates of Escherichia coli against {beta}-lactams, aminoglycosides and other antibiotics. Effects of subinhibitory concentrations of mercury on bacterial resistance against penicillins, cephalosporins, aminoglycosides and doxycycline were also demonstrated in a laboratory trial. Antimicrobial resistance in the porcine microflora might be increased by copper and zinc. By contrast, the occurrence of mercury in the environment might, due to co-toxicity, act counter-selective against antimicrobial resistant strains.

Hoelzel, Christina S., E-mail: Christina.Hoelzel@wzw.tum.de [Chair of Animal Hygiene, Technische Universitaet Muenchen, Weihenstephaner Berg 3, 85354 Freising (Germany); Mueller, Christa [Institute for Agroecology, Organic Farming and Soil Protection, Bavarian State Research Center for Agriculture (LfL), Lange Point 12, 85354 Freising (Germany)] [Institute for Agroecology, Organic Farming and Soil Protection, Bavarian State Research Center for Agriculture (LfL), Lange Point 12, 85354 Freising (Germany); Harms, Katrin S. [Chair of Animal Hygiene, Technische Universitaet Muenchen, Weihenstephaner Berg 3, 85354 Freising (Germany)] [Chair of Animal Hygiene, Technische Universitaet Muenchen, Weihenstephaner Berg 3, 85354 Freising (Germany); Mikolajewski, Sabine [Department for Quality Assurance and Analytics, Bavarian State Research Center for Agriculture (LfL), Lange Point 4, 85354 Freising (Germany)] [Department for Quality Assurance and Analytics, Bavarian State Research Center for Agriculture (LfL), Lange Point 4, 85354 Freising (Germany); Schaefer, Stefanie; Schwaiger, Karin; Bauer, Johann [Chair of Animal Hygiene, Technische Universitaet Muenchen, Weihenstephaner Berg 3, 85354 Freising (Germany)] [Chair of Animal Hygiene, Technische Universitaet Muenchen, Weihenstephaner Berg 3, 85354 Freising (Germany)

2012-02-15T23:59:59.000Z

137

Sewage sludge ash to phosphorus fertiliser: Variables influencing heavy metal removal during thermochemical treatment  

SciTech Connect

The aim of this study was to improve the removal of heavy metals from sewage sludge ash by a thermochemical process. The resulting detoxified ash was intended for use as a raw material rich in phosphorus (P) for inorganic fertiliser production. The thermochemical treatment was performed in a rotary kiln where the evaporation of relevant heavy metals was enhanced by additives. The four variables investigated for process optimisation were treatment temperature, type of additive (KCl, MgCl{sub 2}) and its amount, as well as type of reactor (directly or indirectly heated rotary kiln). The removal rates of Cd, Cr, Cu, Ni, Pb, Zn and of Ca, P and Cl were investigated. The best overall removal efficiency for Cd, Cu, Pb and Zn could be found for the indirectly heated system. The type of additive was critical, since MgCl{sub 2} favours Zn- over Cu-removal, while KCl acts conversely. The use of MgCl{sub 2} caused less particle abrasion from the pellets in the kiln than KCl. In the case of the additive KCl, liquid KCl - temporarily formed in the pellets - acted as a barrier to heavy metal evaporation as long as treatment temperatures were not sufficiently high to enhance its reaction or evaporation.

Mattenberger, H.; Fraissler, G. [Austrian Bioenergy Centre GmbH, Inffeldgasse 21b, 8010 Graz (Austria); Brunner, T. [Austrian Bioenergy Centre GmbH, Inffeldgasse 21b, 8010 Graz (Austria); BIOS BIOENERGIESYSTEME GmbH, Inffeldgasse 21b, 8010 Graz (Austria)], E-mail: thomas.brunner@abc-energy.at; Herk, P. [ARP GmbH, Johann Sacklgasse 65-67, 8700 Leoben (Austria); Hermann, L. [Austrian Bioenergy Centre GmbH, Inffeldgasse 21b, 8010 Graz (Austria); ASH DEC Umwelt AG, Donaufelderstrasse 101/4/5, 1210 Wien (Austria); Obernberger, I. [Austrian Bioenergy Centre GmbH, Inffeldgasse 21b, 8010 Graz (Austria); BIOS BIOENERGIESYSTEME GmbH, Inffeldgasse 21b, 8010 Graz (Austria)

2008-12-15T23:59:59.000Z

138

Speciation of Heavy Metals in Floodplain and Flood Sediments: a Reconnaissance Survey of the Aire Valley, West Yorkshire, Great Britain  

Science Journals Connector (OSTI)

A five-step sequential extraction technique was used to determine the chemical association of heavy metals (Pb, Zn, Cu and Cd), with major sedimentary phases (exchangeable, surface oxide and carbonate, Fe and ...

E.J. Dawson; M.G. Macklin

1998-06-01T23:59:59.000Z

139

The Emissions of PAHs and Heavy Metals from Co-Combustion of Petrochemical Sludge with Coal in CFB Incinerator  

Science Journals Connector (OSTI)

The polycyclic aromatic hydrocarbons (PAHs) and heavy metals (Hg, Pb, Ni, Cr, Cu, Zn) emission characteristics in flue gas from co-combustion of petrochemical sludge and coal were investigated in a pilot-scale ci...

Ge Zhu; Changsui Zhao; Huichao Chen…

2010-01-01T23:59:59.000Z

140

Quantitative analysis of heavy metals emission during the combustion and baling of polyvinyl chloride insulated copper wire  

E-Print Network (OSTI)

was conducted and compared to the airborne dust samples collected during the baling process. From these results, occupational exposures to heavy metals during the reclamation of PVC insulated copper wire were assessed. Bulk ash and dust samples were ?aken...

Pickard, David Paul

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

Changes in metal nanoparticle shape and size induced by swift heavy-ion irradiation M.C. Ridgway1  

E-Print Network (OSTI)

Changes in metal nanoparticle shape and size induced by swift heavy-ion irradiation M.C. Ridgway1 and Au nanoparticles induced by swift heavy-ion irradiation (SHII) have been characterized using-edge structure. Elemental nanoparticles of diameters 2-15 nm were first formed in amorphous SiO2 by ion

Paris-Sud XI, Université de

142

Heavy metal removal and recovery using microorganisms. Volume 1, State-of-the-art and potential applications at the SRS  

SciTech Connect

Microorganisms -- bacteria, fungi, and microalgae -- can accumulate relatively large amounts of toxic heavy metals and radionuclides from the environment. These organisms often exhibit specificity for particular metals. The metal content of microbial biomass can be a substantial fraction of total dry weight with concentration factors (metal in dry biomass to metal in solution) exceeding one million in some cases. Both living and inert (dead) microbial biomass can be used to reduce heavy metal concentrations in contaminated waters to very low levels -- parts per billion and even lower. In many respects (e.g. specificity, residual metal concentrations, accumulation factors, and economics) microbial bioremoval processes can be superior to conventional processes, such as ion exchange and caustic (lime or hydroxide) precipitation for heavy metals removal from waste and contaminated waters. Thus, bioremoval could be developed to contribute to the clean-up of wastes at the Savannah River Site (SRS) and other DOE facilities. However, the potential advantages of bioremoval processes must still be developed into practical operating systems. A detailed review of the literature suggests that appropriate bioremoval processes could be developed for the SRS. There is great variability from one biomass source to another in bioremoval capabilities. Bioremoval is affected by pH, other ions, temperature, and many other factors. The biological (living vs. dead) and physical (immobilized vs. dispersed) characteristics of the biomass also greatly affect metal binding. Even subtle differences in the microbial biomass, such as the conditions under which it was cultivated, can have major effects on heavy metal binding.

Wilde, E.W. [Westinghouse Savannah River Co., Aiken, SC (United States); Benemann, J.R. [Benemann (J.R.), Pinole, CA (United States)

1991-02-01T23:59:59.000Z

143

Chelant extraction and REDOX manipulation for mobilization of heavy metals from contaminated soils  

SciTech Connect

Was the result of open burning and open detonation of chemical agents and munitions in the Toxic Burning Pits area at J-Field, located in the Edgewood Area of Aberdeen Proving Ground in Harford County, Maryland, soils have been contaminated with heavy metals. Simultaneous extraction is complicated because of the multitude of contaminant forms that exist. This paper uses data from a treatability study performed at Argonne National Laboratory to discuss and compare several treatment methods that were evaluated for remediating metals-contaminated soils. J-Field soils were subjected to a series of treatability experiments designed to determine the feasibility of using soil washing/soil flushing, enhancements to soil washing/soil flushing, solidification/stabilization, and electrokinetics for remediating soils contaminated with metals. Chelating and mobilizing agents evaluated included ammonium acetate, ethylenediaminetetraacetic acid, citric acid, Citranox, gluconic acid, phosphoric acid, oxalic acid, and nitrilotriacetic acid, in addition to pH-adjusted water. REDOX manipulation can maximize solubilities, increase desorption, and promote removal of heavy metal contaminants. Reducing agents that were studied included sodium borohydride, sodium metabisulfite, and thiourea dioxide. The oxidants studied included hydrogen peroxide, sodium percarbonate, sodium hypochlorite, and potassium permanganate. This paper summaries the results from the physical/chemical characterization, soil washing/soil flushing, and enhancements to soil washing/soil flushing portions of the study.

Brewster, M.D.; Peters, R.W.; Miller, G.A.; Patton, T.L.; Martino, L.E.

1994-12-01T23:59:59.000Z

144

Owen, R.B., Sandhu, N., 2000. Heavy metal accumulation and anthro-pogenic impacts on Tolo Harbour, Hong Kong. Mar. Pollut. Bull. 40,  

E-Print Network (OSTI)

.-M., 2003. Pollution history of the Masan Bay, southeast Korea, from heavy metals and foraminiferaOwen, R.B., Sandhu, N., 2000. Heavy metal accumulation and anthro- pogenic impacts on Tolo Harbour and tracer elements in sediments of the Ria de Vigo (NW Spain): an assessment of metal pollution. Mar. Pollut

Yu, K.N.

145

(Data in metric tons1 of gold content, unless noted)  

E-Print Network (OSTI)

combined production accounted for nearly 80% of the U.S. total. The trend for recent U.S. gold exploration68 GOLD (Data in metric tons1 of gold content, unless noted) Domestic Production and Use: Gold was recovered as a byproduct of processing base metals, chiefly copper. Twenty-five lode mines yielded

146

ZIRCONIUM AND HAFNIUM (Data in metric tons, unless otherwise noted)  

E-Print Network (OSTI)

of hafnium metal was insignificant. Import Sources (1997-2000): Zirconium ores and concentrates: South Africa%; Germany, 7%; United Kingdom, 2%; and other, 9%. Tariff: Item Number Normal Trade Relations 12 Stockpile, the U.S. Department of Energy (DOE) held over 500 tons of zirconium in various forms. DOE also

147

ZIRCONIUM AND HAFNIUM (Data in metric tons, unless otherwise noted)  

E-Print Network (OSTI)

of hafnium metal was insignificant. Import Sources (1998-2001): Zirconium ores and concentrates: South Africa%; Germany, 8%; United Kingdom, 3%; and other, 9%. Tariff: Item Number Normal Trade Relations 12,838 short tons) of zirconium ore (baddeleyite) during fiscal year 2002. The U.S. Department of Energy (DOE

148

Separation of heavy metals: Removal from industrial wastewaters and contaminated soil  

SciTech Connect

This paper reviews the applicable separation technologies relating to removal of heavy metals from solution and from soils in order to present the state-of-the-art in the field. Each technology is briefly described and typical operating conditions and technology performance are presented. Technologies described include chemical precipitation (including hydroxide, carbonate, or sulfide reagents), coagulation/flocculation, ion exchange, solvent extraction, extraction with chelating agents, complexation, electrochemical operation, cementation, membrane operations, evaporation, adsorption, solidification/stabilization, and vitrification. Several case histories are described, with a focus on waste reduction techniques and remediation of lead-contaminated soils. The paper concludes with a short discussion of important research needs in the field.

Peters, R.W.; Shem, L.

1993-03-01T23:59:59.000Z

149

Precipitation of the ions of the heavy metals with aqueous triethylamine hydrosulfide  

E-Print Network (OSTI)

, though. the latter'have a worse re'putation. The advantages 'of. the 'sulfide 'system, are that the . Sul. f Mes, of the heavy metals are guantitatively . insolub'1'e and oan easily' bs' separated'; , X Grasp . I. 6'rmp' II Hj' G'~ - Hi+&', xi.... wii s pun lusind, the' sohims of ", analysis outliried in . F'lpurlis IV', V. , " and 'VI lt 8, 7), , ' T'hi: o'nly' 8 if'fe ranee' between' thii soheme 'and the soheme, found, 'in'many ltextp:dsl that tnriethylamins hydro- s'ulfids riiplaoei...

Hill, John Howard

2012-06-07T23:59:59.000Z

150

Air Pollution with Heavy Metals and Radionuclides in Slovakia Studied by the Moss Biomonitoring Technique  

E-Print Network (OSTI)

Applying the moss biomonitoring technique to air pollution studies in Slovakia, heavy metals, rare-earth elements, actinides (U and Th) were determined in 86 moss samples from the European moss survey 2000 by means of epithermal neutron activation analysis at the IBR-2 reactor (Dubna). Such elements as In, Cu, Cd, Hg and Pb were determined by AAS in the Forest Research Institute, Zvolen (Slovakia). The results of measurement of the natural radionuclides ^{210}Pb, ^{7}Be, ^{137}Cs and ^{40}K in 11 samples of moss are also reported. A comparison with the results from moss surveys 1991 and 1995 revealed previously unknown tendencies of air pollution in the examined areas.

Florek, M; Mankovska, B; Oprea, K; Pavlov, S S; Steinnes, E; Sykora, I

2001-01-01T23:59:59.000Z

151

BIOMONITORING OF HEAVY METAL POLLUTION NEAR COPPER SMELTER IN BOR (SERBIA) USING ACACIA  

E-Print Network (OSTI)

The correlations between sampling sites situated in the close vicinity of copper smelter (Bor, Serbia) based on heavy metal (Pb, Cu, Zn) content in plant parts and soil of acacia (Robinia pseudoacacia L.) were determined. Very strong correlations (R 2>0.9) were observed between the sites Town park and Hospital in the urban-industiral zone due to high air pollution in this sampling area. The performed cluster analysis confirmed these results by grouping the sites with high metal content in plant and soil material of Robinia pseudoacacia into the same clusters. Also, strong correlations were noted between less polluted sampling sites (Bor lake and Brestovac spa) with the control site (Sumrakovac).

Ana A. Ilic; Snezana M. Serbula; Jelena V. Kalinovic; Tanja S. Kalinovic

152

Uranium and other heavy metals in the plant-animal-human food chain near abandoned mining sites and structures in an American Indian community in northwestern New Mexico  

E-Print Network (OSTI)

Resource Evaluation (NURE) sampling that was undertaken inabove those found in the NURE sampling conducted in the1970s (Mo not evaluated by NURE). The other heavy metals (

Samuel-Nakamura, Christine

2013-01-01T23:59:59.000Z

153

Metagenomic insights into evolution of a heavy metal-contaminated groundwater microbial community  

SciTech Connect

Understanding adaptation of biological communities to environmental change is a central issue in ecology and evolution. Metagenomic analysis of a stressed groundwater microbial community reveals that prolonged exposure to high concentrations of heavy metals, nitric acid and organic solvents (~50 years) has resulted in a massive decrease in species and allelic diversity as well as a significant loss of metabolic diversity. Although the surviving microbial community possesses all metabolic pathways necessary for survival and growth in such an extreme environment, its structure is very simple, primarily composed of clonal denitrifying - and -proteobacterial populations. The resulting community is overabundant in key genes conferring resistance to specific stresses including nitrate, heavy metals and acetone. Evolutionary analysis indicates that lateral gene transfer could have a key function in rapid response and adaptation to environmental contamination. The results presented in this study have important implications in understanding, assessing and predicting the impacts of human-induced activities on microbial communities ranging from human health to agriculture to environmental management, and their responses to environmental changes.

Hemme, Christopher [University of Oklahoma; Deng, Ye [University of Oklahoma; Gentry, Terry [Texas A& M University; Fields, Matthew Wayne [Miami University, Oxford, OH; Wu, Liyou [University of Oklahoma, Norman; Barua, Soumitra [University of Oklahoma; Barry, Kerry [Joint Genome Institute; Green-Tringe, Susannah [Joint Genome Institute, Walnut Creek, California; Watson, David B [ORNL; He, Zhili [University of Oklahoma; Hazen, Terry [Lawrence Berkeley National Laboratory (LBNL); Tiedje, James M. [Michigan State University, East Lansing; Rubin, Edward M. [Joint Genome Institute, Walnut Creek, California; Zhou, Jizhong [University of Oklahoma, Norman

2010-02-01T23:59:59.000Z

154

Metagenomic Insights into Evolution of a Heavy Metal-Contaminated Groundwater Microbial Community  

SciTech Connect

Understanding adaptation of biological communities to environmental change is a central issue in ecology and evolution. Metagenomic analysis of a stressed groundwater microbial community reveals that prolonged exposure to high concentrations of heavy metals, nitric acid and organic solvents (~;;50 years) have resulted in a massive decrease in species and allelic diversity as well as a significant loss of metabolic diversity. Although the surviving microbial community possesses all metabolic pathways necessary for survival and growth in such an extreme environment, its structure is very simple, primarily composed of clonal denitrifying ?- and ?-proteobacterial populations. The resulting community is over-abundant in key genes conferring resistance to specific stresses including nitrate, heavy metals and acetone. Evolutionary analysis indicates that lateral gene transfer could be a key mechanism in rapidly responding and adapting to environmental contamination. The results presented in this study have important implications in understanding, assessing and predicting the impacts of human-induced activities on microbial communities ranging from human health to agriculture to environmental management, and their responses to environmental changes.

Hemme, Christopher L.; Deng, Ye; Gentry, Terry J.; Fields, Matthew W.; Wu, Liyou; Barua, Soumitra; Barry, Kerrie; Tringe, Susannah G.; Watson, David B.; He, Zhili; Hazen, Terry C.; Tiedje, James M.; Rubin, Edward M.; Zhou, Jizhong

2010-02-15T23:59:59.000Z

155

Remediation of heavy-metal-contaminated soil using chelant extraction: Feasibility studies  

SciTech Connect

Results are presented of a laboratory investigation conducted to determine the efficacy of using chelating agents to extract heavy metals (Pb, Cd, Cr, Ba, Cu, and Zn) from soil, the primary focus being on the extraction of lead from the soil. Results from the batch-shaker studies and emphasizes the columnar extraction studies are described. The chelating agents studied included ethylenediaminetetraacetic acid (EDTA) and citric acid, in addition to water. Concentrations of the chelants ranged from 0.01 to 0.05 M; the suspension pH was varied between 3 and 8. Results showed that the removal of lead using citric acid and water was somewhat pH-dependent. For the batch-shaker studies, the results indicated that EDTA was more effective at removing Cd, Cu, Pb, and Zn than was citric acid (both present at 0.01 M). EDTA and citric acid were equally effective in mobilizing Cr and Ba from the soil. Heavy metals removal was slightly more effective in the more acidic region (pH {le} 5).

Peters, R.W.; Miller, G.; Taylor, J.D.; Schneider, J.F.; Zellmer, S.; Edgar, D.E.; Johnson, D.O.

1993-08-01T23:59:59.000Z

156

Antennal Deformities of Chironomid Larvae and Their Use in Biomonitoring of Heavy Metal Pollutants in the River Damodar of West Bengal, India  

Science Journals Connector (OSTI)

Analyses of sediment and water indicate the presence of heavy metal pollutants like lead, zinc, copper, mercury and cadmium of the river Damodar of India. These metals are responsible for causing morphological...

G. Bhattacharyay; A. K. Sadhu; A. Mazumdar…

2005-09-01T23:59:59.000Z

157

A 150-Ton Universal Structure Testing Machine  

Science Journals Connector (OSTI)

... 150-ton universal structure testing machine for Short Bros, and Harland, Ltd. (Engineer, December 26, pp. 594–596). ...

C. F. TIPPER

1948-04-24T23:59:59.000Z

158

Heavy Oil Production Technology Challenges and the Effect of Nano Sized Metals on the Viscosity of Heavy Oil.  

E-Print Network (OSTI)

?? Heavy oil and bitumen make up 70% of the discovered petroleum resources in the world. Only a very small fraction of these resources have… (more)

Bjűrnseth, Fabian

2013-01-01T23:59:59.000Z

159

Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents  

Science Journals Connector (OSTI)

In the present investigation, different agricultural solid wastes namely: eggplant hull (EH), almond green hull (AGH), and walnut shell (WS), that are introduced as low cost adsorbents, were used for the removal of heavy metals (cobalt, strontium and mercury ions) from aqueous solutions. Activation process and/or chemical treatments using H2O2 and NH3 were performed on these raw materials to increase their adsorption performances. The effectiveness of these adsorbents was studied in batch adsorption mode under a variety of experimental conditions such as: different chemical treatments, various amounts of adsorbents, initial metal-ion concentrations, pH of solutions, contact times, and solution temperatures. High metal adsorption efficiencies were achieved for all cases only in the first two to three minutes of adsorbents' contact time. Maximum adsorption capacity of AGH sorbent for cobalt and EH for mercury were found to be 45.5 mg/g and 147.06 mg/g, respectively. The adsorption capacity of mercury for WS was also obtained as 151.5 and 100.9 mg/g for two different treated sorbents.

Ali Ahmadpour; Tahereh Rohani Bastami; Masumeh Tahmasbi; Mohammad Zabihi

2012-01-01T23:59:59.000Z

160

On the use of biosurfactants for the removal of heavy metals from oil-contaminated soil  

SciTech Connect

The feasibility of using biodegradable biosurfactants to remove heavy metals from an oil-contaminated soil was evaluated by batch washes with surfactin, a rhamnolipid and a sophorolipid. The soil contained 890 mg/kg of zinc and 420 mg/kg of copper with a 12.6% oil and grease content. Highest levels of zinc removal were obtained using 12% rhamnolipid and 4% sophorolipid/0.7% HCl. Highest copper removal rates were achieved with 12% rhamnolipid or with 2% rhamnolipid/1% NaOH or 0.25% surfactin/1% NaOH. A series of five batch washes removed 70% of the copper with 0.1% surfactin/1% NaOH while 4% sophorolipid/0.7% HCl was able to remove 100% of the zinc. Sequential extraction procedures showed that the carbonate and oxide fractions accounted for over 90% of the zinc present in the soil and the organic fraction in the soil constituted over 70% of the copper. Sequential extraction of the soil after washing with the surfactin or rhamnolipid indicated that these surfactants could remove the organically-bound copper and that the sophorolipid with acid could remove the carbonate and oxide-bound zinc. In conclusion, the results clearly indicated the feasibility of removing the metals with the anionic biosurfactants tested even though the exchangeable metal fractions were very low.

Mulligan, C.N. [Concordia Univ., Montreal, Quebec (Canada). Dept. of Building, Civil and Environmental Engineering] [Concordia Univ., Montreal, Quebec (Canada). Dept. of Building, Civil and Environmental Engineering; Yong, R.N. [Univ. of Wales, Cardiff (United Kingdom)] [Univ. of Wales, Cardiff (United Kingdom); Gibbs, B.F. [Bivan Consultants Inc., Montreal, Quebec (Canada). Environmental Div.] [Bivan Consultants Inc., Montreal, Quebec (Canada). Environmental Div.

1999-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

An ecological study examining the correlation of end-stage renal disease and ground water heavy metal content in Texas counties  

E-Print Network (OSTI)

An ecological study was conducted to examine the correlation of end-stage renal disease (ESRD) and the ground water heavy metal level of lead, arsenic, cadmium, mercury and the cumulative level of all four metals in Texas counties. The heavy meal...

Bishop, Scott Alan

2012-06-07T23:59:59.000Z

162

14 Congresso Brasileiro de Geologia de Engenharia e Ambiental Transfer heavy metal from soil treated to colza  

E-Print Network (OSTI)

in sludge from urban and industrial wastewater treatment plants, trying to understand their influence in the roots of colza. Keywords: Mud, heavy metals, colza, bio-accumulator, wastewater GĂ©nie Rural Eaux et ForĂȘts (INRGREF), Tunis. (lassoued_najla@yahoo.fr), 2 Ecole Nationale SupĂ©rieure des

Paris-Sud XI, Université de

163

Using alternative chemicals in the flotation of heavy metals from lead mill tailings  

SciTech Connect

The U.S. Bureau of Mines (USBM) investigated alternative chemicals for the flotation of heavy metal values from southeast Missouri lead mill tailings. The objectives of the study were to lower the Pb remaining in the reprocessed tailings to <500 ppm, concentrate the metal values, and lower the overall toxicity of the flotation reagent scheme. Due to the high toxicity of classic flotation chemicals, collectorless flotation, as well as nontoxic or less-toxic chemicals, was studied for use in the flotation process. The investigation centered on the National tailings pile in Flat River, MO. Advantages to using alternative chemicals for the flotation process are presented. Novel reagent schemes are discussed for the treatment of the tailings. Various nontoxic or less-toxic oils were tested, and a substitute for sodium sulfide was investigated. Using a food additive oil, soda ash, and a frother as the reagent scheme, froth flotation recovered 89% of the Pb values. Further scavenging lowered the Pb remaining in the reprocessed tailings to <500 ppm. A less-toxic substitute for sodium cyanide was also studied for use in the cleaner flotation stages. Preliminary results indicate that the food additive oil, canola oil, to be as effective as classic sulfide flotation reagents.

Benn, F.W. [Bureau of Mines, Rolla, MO (United States)

1995-04-01T23:59:59.000Z

164

Effect of stress at dosing on organophosphate and heavy metal toxicity  

SciTech Connect

This paper reviews recent studies assessing the effect of well-defined, severe, transient stress at dosing on two classical models of toxicity. These are the acute (anticholinesterase) toxicity seen following exposure to the organophosphate insecticide chlorpyrifos, and the nephrotoxicity elicited by the heavy metal depleted uranium, in rats. Stress was induced by periods of restraint and forced swimming in days to weeks preceding toxicant exposure. Forced swimming was far more stressful, as measured by marked, if transient, elevation of plasma corticosterone. This form of stress was administered immediately prior to administration of chlorpyrifos or depleted uranium. Chlorpyrifos (single 60 mg/kg subcutaneously) elicited marked inhibition of brain acetylcholinesterase 4-day post-dosing. Depleted uranium (single intramuscular doses of 0.1, 0.3 or 1.0 mg/kg uranium) elicited dose-dependent increase in kidney concentration of the metal, with associated injury to proximal tubular epithelium and increases in serum blood urea nitrogen and creatinine during the 30-day post-dosing period. Stress at dosing had no effect on these toxicologic endpoints.

Jortner, Bernard S. [Laboratory for Neurotoxicity Studies, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, 1 Duck Pond Drive, Blacksburg, VA 24061-0442 (United States)], E-mail: bjortner@vt.edu

2008-11-15T23:59:59.000Z

165

Pulmonary toxicity after exposure to military-relevant heavy metal tungsten alloy particles  

SciTech Connect

Significant controversy over the environmental and public health impact of depleted uranium use in the Gulf War and the war in the Balkans has prompted the investigation and use of other materials including heavy metal tungsten alloys (HMTAs) as nontoxic alternatives. Interest in the health effects of HMTAs has peaked since the recent discovery that rats intramuscularly implanted with pellets containing 91.1% tungsten/6% nickel/2.9% cobalt rapidly developed aggressive metastatic tumors at the implantation site. Very little is known, however, regarding the cellular and molecular mechanisms associated with the effects of inhalation exposure to HMTAs despite the recognized risk of this route of exposure to military personnel. In the current study military-relevant metal powder mixtures consisting of 92% tungsten/5% nickel/3% cobalt (WNiCo) and 92% tungsten/5% nickel/3% iron (WNiFe), pure metals, or vehicle (saline) were instilled intratracheally in rats. Pulmonary toxicity was assessed by cytologic analysis, lactate dehydrogenase activity, albumin content, and inflammatory cytokine levels in bronchoalveolar lavage fluid 24 h after instillation. The expression of 84 stress and toxicity-related genes was profiled in lung tissue and bronchoalveolar lavage cells using real-time quantitative PCR arrays, and in vitro assays were performed to measure the oxidative burst response and phagocytosis by lung macrophages. Results from this study determined that exposure to WNiCo and WNiFe induces pulmonary inflammation and altered expression of genes associated with oxidative and metabolic stress and toxicity. Inhalation exposure to both HMTAs likely causes lung injury by inducing macrophage activation, neutrophilia, and the generation of toxic oxygen radicals. -- Highlights: ? Intratracheal instillation of W–Ni–Co and W–Ni–Fe induces lung inflammation in rats. ? W–Ni–Co and W–Ni–Fe alter expression of oxidative stress and toxicity genes. ? W–Ni–Co induces a greater oxidative burst response than W–Ni–Fe in lung macrophages.

Roedel, Erik Q., E-mail: Erik.Roedel@amedd.army.mil [Department of General Surgery, Tripler Army Medical Center, Honolulu, HI 96859 (United States); Cafasso, Danielle E., E-mail: Danielle.Cafasso@amedd.army.mil [Department of General Surgery, Tripler Army Medical Center, Honolulu, HI 96859 (United States); Lee, Karen W.M., E-mail: Karen.W.Lee@amedd.army.mil [Department of Clinical Investigation, Tripler Army Medical Center, Honolulu, HI 96859 (United States); Pierce, Lisa M., E-mail: Lisa.Pierce@amedd.army.mil [Department of Clinical Investigation, Tripler Army Medical Center, Honolulu, HI 96859 (United States)

2012-02-15T23:59:59.000Z

166

Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in our environment. The  

E-Print Network (OSTI)

Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs of metallic lead in the soil (4) Drinking water ­ water as it leaves the treatment plant has no lead of connection. (In some cases, the water meter as well as the curb stop is outside the house.) Common metals

Maynard, J. Barry

167

Portugaliae Electrochimica Acta (2006), 24(3), 367-376 Portuguese Electrochemical A Modified Electrodialytic Cell to Recover Heavy Metals from Wastewater  

E-Print Network (OSTI)

, A Modified Electrodialytic Cell to Recover Heavy Metals from Wastewater Abo-Ghander, N. S.; Rahman, S. U electrodialysis and redn. of metal ions. The cell is able to recover metallic copper from wastewater contg. 1000 of several parameters, namely, width of wastewater compartment, applied potential and concn. of anolyte

Zaidi, S. M. Javaid

168

Algal growth potentials and heavy-metal concentrations of the primary streams to upper Beaver Lake. Technical completion report  

SciTech Connect

Algal-growth potential was inhibited by heavy metals in upper Beaver Lake, Arkansas. Upper Beaver Lake receives water from three tributaries. One contains a small reservoir and the combined streams receive sewage input. Collections were made approximately monthly at eight sites for the Algal Assay Bottle Test (AABT) and heavy-metal analysis. In general, AABT results indicated that the collections above the sewage input were phosphorus-limited while those below were nitrogen- or combined nitrogen- and phosphorus-limited. Growth inhibition occurred during summer and early fall at various sites with greater inhibition at the confluence of the streams. No inhibitions occurred at the site below the sewage input. Heavy-metal concentrations had an overall tendency to increase downstream. Values within the small reservoir were 50-100% higher than in the feeder stream. Highest values of Pb were observed below the reservoir. SO/sub 4/, Cl, Mg, Ca, Na and K had high values during low flow in August-October. Mn, Pb, and Fe exceeded EPA-recommended standards for drinking water.

Meyer, R.L.; Green, W.R.; Steele, K.F.; Wickliff, D.

1986-06-01T23:59:59.000Z

169

The Relationship Between Heavy Metal (Cd, Co, Cu, Ni and Pb) Levels and the Size of Benthic, Benthopelagic and Pelagic Fish Species, Persian Gulf  

Science Journals Connector (OSTI)

The concentration of heavy metals was determined in tissues of sole (Euryglossa orientalis), mullet (Liza abu) and croacker fish (Johnius belangerii) from Musa estuary. Generally, the highest concentration of the...

Fazel Abdolahpur Monikh; Alireza Safahieh…

2013-06-01T23:59:59.000Z

170

Isolation of heavy metal influx to the Cookeville sanitary sewer system and impact on municipal sludge management  

SciTech Connect

The city of Cookeville, Tennessee, has been experiencing problems with municipal sludge management. Of particular concern was the high concentration of regulated trace metals in the sludge. Primarily, cadmium limited the amount of sludge which was spread on the available cropland in 1985. The purpose of this project was to determine the major sources of heavy metal influx to the city's sanitary sewer system and the potential effects of heavy metals on sludge management. In general, the findings of the study indicate that city enforcement of existing State of Tennessee and city industrial pretreatment requirements will most likely extend the useful life of the currently available 388 ha land application sites to as much as ten years for certain sites. Cadmium governed the annual sludge application rates to the agricultural land. One plating industry discharged over 90% of the cadmium, copper, nickel, and zinc mass to the sanitary sewer. In addition, during 1986, the average concentration of most of the trace metals monitored in the municipal sludge deceased from levels reported in 1985.

George, D.B.; Borup, M.B.; Adams, V.D.; Prehn, M.P. (Tennessee Technological Univ., Cookeville (USA))

1989-04-01T23:59:59.000Z

171

Effects of Adding Sewage Sludge and Urea-Phosphate Fertilizers to the Great Sippewissett Salt Marsh, Falmouth, MA on Heavy Metals and Microbial N-Cycling  

E-Print Network (OSTI)

Effects of Adding Sewage Sludge and Urea-Phosphate Fertilizers to the Great Sippewissett Salt Marsh in sludge form. Metals were not found to inhibit nitrification nor denitrification. Neither fertilizer nor, microbes, nitrogen cycle, sewage sludge, urea phosphate fertilizer, heavy metals INTRODUCTION Pollution

Vallino, Joseph J.

172

Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication  

Science Journals Connector (OSTI)

Abstract This work assessed levels of heavy metals exposure from silver coatings of mobile phones recharge cards of three major companies (designated as A, B and C) with price denominations 100, 200 and 400 from companies A, B and C respectively, which were carefully scratched using a plastic scraper into a glass tube. The coatings were acid digested for total metal concentration, while speciation experiment for Mn, Cu, Cd and Pb was carried out. Total metals and speciation analysis were done using AAS and XRF techniques. The total metal concentration from XRF analysis was in the range: Ca (70–2140 ?g/g), K (20–4930 ?g/g), Sc (80–270 ?g/g), Ti (1530–12,580 ?g/g), Fe (50–6660 ?g/g), Ni (20–2040 ?g/g), Cu (20–850 ?g/g) and Zn (40–460 ?g/g). Cr had the lowest concentration (10 ?g/g) in A ( 400) while Ti had the highest concentration (12,580 ?g/g) in C ( 500) for all the coatings analyzed. AAS and XRF results agreed closely except for Fe with higher concentration. A ( 100) contained high concentration of the metals compared with others. Speciation study identified Mn as the most mobile element when present in the environment.

Abolanle S. Adekunle; John A.O. Oyekunle; Suliat O. Baruwa; Aderemi O. Ogunfowokan; Eno E. Ebenso

2014-01-01T23:59:59.000Z

173

Determination of metals in heavy oil residues by inductively coupled plasma atomic emission spectroscopy  

Science Journals Connector (OSTI)

A method is proposed for the sample preparation of heavy oil residues characterized by viscosity of more than 700 mm2/sec at 100°C to study their elemental composition. It is shown that a wide range of elements c...

T. A. Maryutina; N. S. Musina

2012-10-01T23:59:59.000Z

174

Survey on ionic liquids effect based on metal anions over the thermal stability of heavy oil  

Science Journals Connector (OSTI)

A survey on the effect of ionic liquids (ILs) over the thermal stability of a heavy Mexican oil was performed. ILs used were based on [Cnim]+ and [Cnpyr]+ organic cations with FeCl 4 ...

J. A. Murillo-Hernández; S. López-Ramírez…

2009-01-01T23:59:59.000Z

175

(Data in thousand metric tons of silicon content unless otherwise noted) Domestic Production and Use: Estimated value of silicon alloys and metal produced in the United States in 2013  

E-Print Network (OSTI)

producers of aluminum and aluminum alloys and the chemical industry. The semiconductor and solar industries, 47%; China, 22%; Canada, 12%; Venezuela, 11%; and other, 8%. Silicon metal: Brazil, 39%; South Africa, 20%; Canada, 14%; Australia, 9%; and other, 18%. Total: Russia, 21%; Brazil, 18%; Canada, 13%; South

176

Crystal Structure of Escherichia coli CusC the Outer Membrane Component of a Heavy Metal Efflux Pump  

SciTech Connect

While copper has essential functions as an enzymatic co-factor, excess copper ions are toxic for cells, necessitating mechanisms for regulating its levels. The cusCBFA operon of E. coli encodes a four-component efflux pump dedicated to the extrusion of Cu(I) and Ag(I) ions. We have solved the X-ray crystal structure of CusC, the outer membrane component of the Cus heavy metal efflux pump, to 2.3 {angstrom} resolution. The structure has the largest extracellular opening of any outer membrane factor (OMF) protein and suggests, for the first time, the presence of a tri-acylated N-terminal lipid anchor. The CusC protein does not have any obvious features that would make it specific for metal ions, suggesting that the narrow substrate specificity of the pump is provided by other components of the pump, most likely by the inner membrane component CusA.

R Kulathila; R Kulathila; M Indic; B van den Berg

2011-12-31T23:59:59.000Z

177

Heavy metals' content of automotive shredder residues (ASR): Evaluation of environmental risk  

Science Journals Connector (OSTI)

Every year between 8 and 9 millions of vehicles in the European Union arrive to their end of life. Car wastes can have a very high metal content, falling into hazardous waste class. A preliminary evaluation of these wastes could be made by metals' leaching test runs which is the main objective of the present study. Evaluation of the total metal content was carried out by X-ray fluorescence and the mobility of these metals using two simple standardized extractions such as the TCLP (Toxicity Characterisation Leaching Procedure) of the US EPA and the German leaching test DIN 38414–S4. Additionally, an extraction test with acetone was performed in order to recognise metals bounded to organic matter. The results show that the total metal content of the ASR can overpass the established values for inert residues. Lead and zinc contents are fairly well correlated with grain-size, whilst other metals' contents do not exhibit clear grain-size dependence.

O. Gonzalez-Fernandez; M. Hidalgo; E. Margui; M.L. Carvalho; I. Queralt

2008-01-01T23:59:59.000Z

178

The Influence of Metal Pollution on the Immune System A Potential Stressor for Marine Mammals in the North Sea  

E-Print Network (OSTI)

2003). Heavy metals in marine mammals, Toxicology of Marineand thymocytes to heavy metals. Environmental Toxicology and

Kakuschke, Antje; Prange, Andreas

2007-01-01T23:59:59.000Z

179

Study of colloidal content and associated heavy metals in landfill leachate: a case study of El-Akader landfill site: Jordan  

Science Journals Connector (OSTI)

Landfill leachate samples were collected anaerobically at six locations at the El-Akader landfill site in North Jordan. The collected leachate samples were separated into size fractions with special attention to the distribution of colloids and associated heavy metals. The fraction sizes were 1.2 ”m. The maximum concentrations of heavy metals in the analysed leachate samples were Cd 0.6 ”g/l, Ni 25 ”g/l, Zn 245 ”g/l, Cu 15 ”g/l and Pb 2.50 ”g/l. In the dissolved particular matter the heavy metals concentration ranges were Cd 0.1â??1.1 ”g/l, Ni 0.35â??1.5 ”g/l, Zn 85â??105 ”g/l, Cu 0â??0.95 ”g/l and Pb 0.5â??2.5 ”g/l.

Y. Abu-Rukah

2005-01-01T23:59:59.000Z

180

MOVEMENT OF HEAVY METALS THROUGH UNDISTURBED AND HOMOGENIZED SOIL COLUMNS Vincent J. Camobreco , Brian K. Richards , Tammo S. Steenhuis , John H. Peverly , and Murray B. McBride1 1* 1 2 2  

E-Print Network (OSTI)

OF HEAVY METALS ..." 2 INTRODUCTION The application of sewage sludge to land is, in principle, an effective 161:740-750 1996 ABSTRACT Soils accumulate heavy metals when sewage sludge is applied to land, such as Cd, Zn, Cu, Ni, Cr and Pb, is the most critical long-term hazard when applying sludge to land (Logan

Walter, M.Todd

Note: This page contains sample records for the topic "tons heavy metal" 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

Heavy metal concentrations in soils of five United States cities, 1972 urban soils monitoring program  

SciTech Connect

Research report:Lead, mercury, cadmium, and arsenic levels detected in soil samples taken from five U.S. cities are reported. Cities studied were: Des Moines, Iowa; Fitchburg, Mass.; Lake Charles, La.; Reading, Pa.; and Pittsburgh. In all cities except Fitchburg, urban soils had higher concentrations of the metals than suburban soils had. Higher metals concentrations in urban soil are attributed to atmospheric fallout of aerosols from industrial processes and fossil fuel burning. (26 references, 2 tables)

Carey, A.E.; Gowen, J.A.; Forehand, T.J.; Tai, H.; Wiersma, G.B.

1980-03-01T23:59:59.000Z

182

NUCLEAR STRUCTURE AND HEAVY-ION FUSION  

E-Print Network (OSTI)

Nuclear Structure and Heavy-Ton Fusion* A series of lecturesthe cross section for fusion in the experiments consideredEffects g in III. Subharrier Fusion Cross Sections for Light

Stokstad, R.G.

2010-01-01T23:59:59.000Z

183

Electrospun and oxidized cellulose materials for environmental remediation of heavy metals in groundwater  

SciTech Connect

This chapter focuses on the use of modified cellulosic materials in the field of environmental remediation. Two different chemical methods were involved in fabricating oxidized cellulose (OC), which has shown promise as a metal ion chelator in environmental applications. Electrospinning was utilized to introduce a more porous structure into an oxidized cellulose matrix. FTIR and Raman spectroscopy were used to study both the formation of OC and its surface complexation with metal ions. IR and Raman spectroscopic data demonstrate the formation of characteristic carboxylic groups in the structure of the final products and the successful formation of OC-metal complexes. Subsequent field tests at the Field Research Site at Oak Ridge National Laboratory confirmed the value of OC for sorption of both U and Th ions.

Han, Dong [Stony Brook University (SUNY); Halada, Gary P. [Stony Brook University (SUNY); Spalding, Brian Patrick [ORNL; Brooks, Scott C [ORNL

2009-12-01T23:59:59.000Z

184

Uptake of heavy metals from aqueous solution by non-conventional adsorbents  

Science Journals Connector (OSTI)

The present study investigates the removal of chromium and copper metal ions from aqueous solution using non-conventional adsorbents such as modified tree barks of acacia arabica (babul) and hardwickia binnata (aajan). In this study the influence of pH, initial sorbate concentration, contact time, adsorbent dose and particle size was investigated. Maximum adsorption for both the metals was found to occur at pH 5. The process of uptake followed first-order adsorption rate expression and obeyed Langmuir and Freundlich models of adsorption. The Langmuir isotherms are best fitted as compared to Freundlich isotherms for the adsorbents studied.

S.J. Patil; A.G. Bhole; G.S. Natarajan

2011-01-01T23:59:59.000Z

185

Silica-polyamine composite materials for heavy metal ion removal, recovery, and recycling. 2. Metal ion separations from mine wastewater and soft metal ion extraction efficiency  

SciTech Connect

Silica-polyamine composites have been synthesized which have metal ion capacities as high as 0.84 mmol/g for copper ions removed from aqueous solutions. In previous reports it has been demonstrated that these materials survive more than 3,000 cycles of metal ion extraction, elution, and regeneration with almost no loss of capacity (less than 10%). This paper describes two modified silica-polyamine composite materials and reveals the results of tests designed to determine the effectiveness of these materials for extracting and separating metal ions from actual mining wastewater samples. Using these materials, the concentration of copper, aluminum, and zinc in Berkeley Pit mine wastewater is reduced to below allowable discharge limits. The recovered copper and zinc solutions were greater than 90% pure, and metal ion concentration factors of over 20 for copper were realized. Further, the ability of one of these materials to decrease low levels of the soft metals cadmium, mercury, and lead from National Sanitation Foundation recommended challenge levels to below Environmental Protection Agency allowable limits is also reported.

Fischer, R.J.; Pang, D.; Beatty, S.T.; Rosenberg, E.

1999-12-01T23:59:59.000Z

186

Magnetism and superconductivity driven by identical 4f states in a heavy-fermion metal  

SciTech Connect

The apparently inimical relationship between magnetism and superconductivity has come under increasing scrutiny in a wide range of material classes, where the free energy landscape conspires to bring them in close proximity to each other. Particularly enigmatic is the case when these phases microscopically interpenetrate, though the manner in which this can be accomplished remains to be fully comprehended. Here, we present combined measurements of elastic neutron scattering, magnetotransport, and heat capacity on a prototypical heavy fermion system, in which antiferromagnetism and superconductivity are observed. Monitoring the response of these states to the presence of the other, as well as to external thermal and magnetic perturbations, points to the possibility that they emerge from different parts of the Fermi surface. Therefore, a single 4f state could be both localized and itinerant, thus accounting for the coexistence of magnetism and superconductivity.

Thompson, Joe E [Los Alamos National Laboratory; Nair, S [MAX PLANCK INST.; Stockert, O [MAX PLANCK INST.; Witte, U [INST. FUR FESTKORPERPHYSIK; Nicklas, M [MAX PLANCK INST.; Schedler, R [HELMHOLTZ - ZENTRUM; Bianchi, A [UC, IRVINE; Fisk, Z [UC, IRVINE; Wirth, S [MAX PLANCK INST.; Steglich, K [HELMHOLTZ - ZENTRUM

2009-01-01T23:59:59.000Z

187

Levels of metals from salt marsh plants from Southern California, USA  

E-Print Network (OSTI)

sedimentary record of heavy metal pollution in the lagoon ofcapacity for heavy metals. Environmental Pollution, 146,heavy metals in experimental salt marsh ecosystems. Environmental Pollution,

Hoyt, Kimberly Ann

2009-01-01T23:59:59.000Z

188

Bioavailability of Cadmium and Zin to Two Earthworm Species in High-metal Soils  

E-Print Network (OSTI)

tolerance capacity for heavy metals pollution (Díez-Ortiz etof heavy metals in soils. Environmental Pollution 113, 135-heavy metals in terrestrial invertebrates. Environmental Pollution

Liu, Ying

2012-01-01T23:59:59.000Z

189

Simple preparation of aminothiourea-modified chitosan as corrosion inhibitor and heavy metal ion adsorbent  

Science Journals Connector (OSTI)

Abstract By a simple and convenient method of using formaldehyde as linkages, two new chitosan (CS) derivatives modified respectively with thiosemicarbazide (TSFCS) and thiocarbohydrazide (TCFCS) were synthesized. The new compounds were characterized and studied by Fourier transform infrared spectroscopy, elemental analysis, thermal gravity analysis and differential scanning calorimetry, and their surface morphologies were determined via scanning electron microscopy. These CS derivatives could form pH dependent gels. The behavior of 304 steel in 2% acetic acid containing different inhibitors or different concentrations of inhibitor had been studied by potentiodynamic polarization test. The preliminary results show that the new compound TCFCS can act as a mixed-type metal anticorrosion inhibitor in some extent; its inhibition efficiency is 92% when the concentration was 60 mg/L. The adsorption studies on a metal ion mixture aqueous solution show that two samples TSFCS and TCFCS can absorb As (V), Ni (II), Cu (II), Cd (II) and Pb (II) efficiently at pH 9 and 4.

Manlin Li; Juan Xu; Ronghua Li; Dongen Wang; Tianbao Li; Maosen Yuan; Jinyi Wang

2014-01-01T23:59:59.000Z

190

Removal of heteroatoms and metals from heavy oils by bioconversion processes  

SciTech Connect

Biocatalysts, either appropriate microorganisms or isolated enzymes, will be used in an aqueous phase in contact with the heavy oil phase to extract heteroatoms such as sulfur from the oil phase by bioconversion processes. Somewhat similar work on coal processing will be adapted and extended for this application. Bacteria such as Desulfovibrio desulfuricans will be studied for the reductive removal of organically-bound sulfur and bacteria such as Rhodococcus rhodochrum will be investigated for the oxidative removal of sulfur. Isolated bacteria from either oil field co-produced sour water or from soil contaminated by oil spills will also be tested. At a later time, bacteria that interact with organic nitrogen may also be studied. This type of interaction will be carried out in advanced bioreactor systems where organic and aqueous phases are contacted. One new concept of emulsion-phase contacting, which will be investigated, disperses the aqueous phase in the organic phase and is then recoalesced for removal of the contaminants and recycled back to the reactor. This program is a cooperative research and development program with the following companies: Baker Performance Chemicals, Chevron, Energy BioSystems, Exxon, Texaco, and UNOCAL. After verification of the bioprocessing concepts on a laboratory-scale, the end-product will be a demonstration of the technology at an industrial site. This should result in rapid transfer of the technology to industry.

Kaufman, E.N.

1996-06-01T23:59:59.000Z

191

Use of Sequential Injection Analysis to construct a Potentiometric Electronic Tongue: Application to the Multidetermination of Heavy Metals  

SciTech Connect

An automated potentiometric electronic tongue (ET) was developed for the quantitative determination of heavy metal mixtures. The Sequential Injection Analysis (SIA) technique was used in order to automate the obtaining of input data, and the combined response was modeled by means of Artificial Neural Networks (ANN). The sensor array was formed by four sensors: two based on chalcogenide glasses Cd sensor and Cu sensor, and the rest on poly(vinyl chloride) membranes Pb sensor and Zn sensor. The Ion Selective Electrode (ISE) sensors were first characterized with respect to one and two analytes, by means of high-dimensionality calibrations, thanks to the use of the automated flow system; this characterization enabled an interference study of great practical utility. To take profit of the dynamic nature of the sensor's response, the kinetic profile of each sensor was compacted by Fast Fourier Transform (FFT) and the extracted coefficients were used as inputs for the ANN in the multidetermination applications. In order to identify the ANN which provided the best model of the electrode responses, some of the network parameters were optimized. Finally analyses were performed employing synthetic samples and water samples of the river Ebro; obtained results were compared with reference methods.

Mimendia, Aitor; Merkoci, Arben; Valle, Manel del [Sensors and Biosensors Group, Chemistry Dept., Universitat Autonoma de Barcelona, Edifici Cn, 08193 Bellaterra, Barcelona (Spain); Legin, Andrey [Chemistry Dept, St. Petersburg University, Universitetskaya nab. 7/9, 199034 St. Petersburg (Russian Federation)

2009-05-23T23:59:59.000Z

192

Physiological responses of switchgrass (Panicum virgatum L.) to organic and inorganic amended heavy-metal contaminated chat tailings  

SciTech Connect

Study plots established at the Galena subsite of the Cherokee County Superfund Site in Southeastern Kansas by the US Bureau of Mines in 1990 were examined during the summer of 1996 to determine whether physiological criteria could be used to determine suitability of switchgrass for remediation of heavy-metal contaminated substrates. Switchgrass was chosen because it was the most frequently encountered species on these plots. Treatment plots included a treatment control, an organic residue treatment of 89.6 Mg Ha{sup {minus}1} composted cattle manure, and two inorganic fertilizer treatments recommended for either native grass or grass/legume mixtures. Plant response variables were photosynthetic rate, leaf conductance to water vapor, internal concentration of carbon dioxide in leaves, foliar transpiration rate, leaf water-use-efficiency, predawn leaf xylem water potential, and midday leaf xylem water potential. Predawn and midday xylem water potentials were higher for grass/legume inorganic treatment than for the other inorganic treatments. Leaf conductances were lower for organically treated plots than those plots not organically amended and both photosynthesis and transpiration were lower for organically treated plots. Leaf conductances and transpiration were higher for grass/legume treated plots than for plots lacking inorganic treatment. Water-use-efficiency was higher for native grass inorganically treated plots than for other inorganic treatments.

Youngman, A.L. [Wichita State Univ., KS (United States). Dept. of Biological Sciences

1997-12-31T23:59:59.000Z

193

Comparative evaluation of several small mammal species as monitors of heavy metals, radionuclides, and selected organic compounds in the environment  

SciTech Connect

The primary purpose of this study was to evaluate which small mammal species are the best monitors of specific environmental contaminants. The evaluation is based on the published literature and on an analysis of small mammals trapped at several sites on the Oak Ridge National Laboratory (ORNL) Reservation in Oak Ridge, Tennessee. Studies on the uptake of heavy metals, radionuclides, and organic chemicals are reviewed in Chapter II to evaluate several small mammal species for their capacity to serve as sentinels for the presence, accumulation, and effects of various contaminants. Where several species were present at a site, a comparative evaluation was made and species are ranked for their capacity to serve as monitors of specific contaminants. Food chain accumulation and food habits of the species are used to establish a relationship with suitability as a biomonitor. Tissue-specific concentration factors were noted in order to establish target tissues. Life histories, habitat, and food habits are reviewed in order to make generalizations concerning the ability of similar taxa to serve as biomonitor. Finally, the usefulness of several small mammal species as monitors of three contaminants -- benzo(a)pyrene, mercury, and strontium-90 -- present on or near the ORNL facilities was investigated. 133 refs., 5 figs., 20 tabs.

Talmage, S.S. (Tennessee Univ., Knoxville, TN (USA) Oak Ridge National Lab., TN (USA)); Walton, B.T. (Oak Ridge National Lab., TN (USA))

1990-08-01T23:59:59.000Z

194

Mobility of Source Zone Heavy Metals and Radionuclides: The Mixed Roles of Fermentative Activity on Fate and Transport of U and Cr. Final Report  

SciTech Connect

Various U. S. Department of Energy (DOE) low and medium-level radioactive waste sites contain mixtures of heavy metals, radionuclides and assorted organic materials. In addition, there are numerous sites around the world that are contaminated with a mixture of organic and inorganic contaminants. In most sites, over time, water infiltrates the wastes, and releases metals, radionuclides and other contaminants causing transport into the surrounding environment. We investigated the role of fermentative microorganisms in such sites that may control metal, radionuclide and organics migration from source zones. The project was initiated based on the following overarching hypothesis: Metals, radionuclides and other contaminants can be mobilized by infiltration of water into waste storage sites. Microbial communities of lignocellulose degrading and fermenting microorganisms present in the subsurface of contaminated DOE sites can significantly impact migration by directly reducing and immobilizing metals and radionuclides while degrading complex organic matter to low molecular weight organic compounds. These low molecular weight organic acids and alcohols can increase metal and radionuclide mobility by chelation (i.e., certain organic acids) or decrease mobility by stimulating respiratory metal reducing microorganisms. We demonstrated that fermentative organisms capable of affecting the fate of Cr6+, U6+ and trinitrotoluene can be isolated from organic-rich low level waste sites as well as from less organic rich subsurface environments. The mechanisms, pathways and extent of contaminant transformation depend on a variety of factors related to the type of organisms present, the aqueous chemistry as well as the geochemistry and mineralogy. This work provides observations and quantitative data across multiple scales that identify and predict the coupled effects of fermentative carbon and electron flow on the transport of radionuclides, heavy metals and organic contaminants in the subsurface; a primary concern of the DOE Environmental Remediation Science Division (ERSD) and Subsurface Geochemical Research (SBR) Program.

Gerlach, Robin [Montana State Univ., Bozeman, MT (United States); Peyton, Brent M. [Montana State Univ., Bozeman, MT (United States); Apel, William A. [Idaho National Lab., Idaho Falls, ID (United States)

2014-01-29T23:59:59.000Z

195

Heavy Element Abundances in Presolar Silicon Carbide Grains from Low-Metallicity AGB Stars  

E-Print Network (OSTI)

Primitive meteorites contain small amounts of presolar minerals that formed in the winds of evolved stars or in the ejecta of stellar explosions. Silicon carbide is the best studied presolar mineral. Based on its isotopic compositions it was divided into distinct populations that have different origins: Most abundant are the mainstream grains which are believed to come from 1.5-3 Msun AGB stars of roughly solar metallicitiy. The rare Y and Z grains are likely to come from 1.5-3 Msun AGB stars as well, but with subsolar metallicities (0.3-0.5x solar). Here we report on C and Si isotope and trace element (Zr, Ba) studies of individual, submicrometer-sized SiC grains. The most striking results are: (1) Zr and Ba concentrations are higher in Y and Z grains than in mainstream grains, with enrichments relative to Si and solar of up to 70x (Zr) and 170x (Ba), respectively. (2) For the Y and Z grains there is a positive correlation between Ba concentrations and amount of s-process Si. This correlation is well explain...

Hoppe, P; Vollmer, C; Groener, E; Heck, P R; Gallino, R; Amari, S; 10.1071/AS08033

2009-01-01T23:59:59.000Z

196

REVIEW PAPER How metal-tolerant ecotypes of ectomycorrhizal fungi  

E-Print Network (OSTI)

with open access at Springerlink.com Abstract & Introduction Heavy metal pollution is a strong driver for heavy metal-contaminated soils. Keywords Heavy metal pollution . Heavy metal tolerance . EctomycorrhizalREVIEW PAPER How metal-tolerant ecotypes of ectomycorrhizal fungi protect plants from heavy metal

Boyer, Edmond

197

Solidification/Stabilization of High Nitrate and Biodenitrified Heavy Metal Sludges with a Portland Cement/Flyash System  

SciTech Connect

Pond 207C at Rocky Flats Environmental Technology Site (RFETS) contains process wastewaters characterized by high levels of nitrates and other salts, heavy metal contamination, and low level alpha activity. The purpose of this research was to investigate the feasibility of treating a high-nitrate waste, contaminated with heavy metals, with a coupled dewateriug and S/S process, as well as to investigate the effects of biodenitrification pretreatment on the S/S process. Pond 207C residuals served as the target waste. A bench-scale treatability study was conducted to demonstrate an S/S process that would minimize final product volume without a significant decrease in contaminant stabilization or loss of desirable physical characteristics. The process formulation recommended as a result a previous S/S treatability study conducted on Pond 207C residuals was used as the baseline formulation for this research. Because the actual waste was unavailable due to difficulties associated with radioactive waste handling and storage, a surrogate waste, of known composition and representative of Pond 207C residuals, was used throughout this research. The contaminants of regulatory concern added to the surrogate were cadmium, chromium, nickel, and silver. Product volume reduction was achieved by dewatering the waste prior to S/S treatment. The surrogate was dewatered by evaporation at 60 to 80 C to total solids contents from 43% to 78% by weight, and treated with Portland cement and fly ash. Two cement to flyash ratios were tested, 2:1 and 1:2, by weight. Contaminant leachability testing was conducted with a 0.5 water to pozzolan (the cement/flyash mixture) ratio and both cement to flyash ratios. Each product was tested for unconfined compressive strength (UCS) and for contaminant leachability by the Toxicity Characteristics Leaching Procedure (TCLP). At the highest solids content achieved by dewatering, 78% solids by weight, the predicted final waste form volume f or Pond 207C residuals after S/S processing was reduced by over 60 A when compared to the baseline process. All tested process formulations produced final waste forms with an average UCS of 100 psi or greater. Percent fixation of Chrome (VI) increased at higher solids contents. Fixation of nickel varied from over 87% to 69%, and cadmium fixation was greater than 99% at every solids content tested. Silver TCLP extract concentrations were below detection limits in all cases except for one anomalous measurement. Final product volume reduction was not achieved with coupled dewatering and S/S processing after biodenitrification pretreatment. The waste slurry became too viscous to mix with reagents after dewatering to approximately 55% solids. Fixation of contaminant constituents and final product UCSs were similar to the results of S/S processing without biodenitrification. Due to the lack of volume reduction, biodenitrification was not successful as a pretreatment for S/S processing under the test conditions of this research.

Canonico, J.S.

1995-07-26T23:59:59.000Z

198

(Data in metric tons of silver content unless otherwise noted)  

E-Print Network (OSTI)

60 to 90 tons of silver that is reclaimed and recycled annually from photographic wastewater. Import in photographic wastewater may be recycled. Silver demand for use in coins, electronics, industrial applications Recycling: In 2010, approximately 1,600 tons of silver was recovered from old and new scrap. This includes

199

Department of Energy Releases New 'Billion-Ton' Study Highlighting  

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

'Billion-Ton' Study 'Billion-Ton' Study Highlighting Opportunities for Growth in Bioenergy Resources Department of Energy Releases New 'Billion-Ton' Study Highlighting Opportunities for Growth in Bioenergy Resources August 10, 2011 - 3:41pm Addthis Washington, D.C. - The U.S. Department of Energy today released a report - 2011 U.S. Billion-Ton Update: Biomass Supply for a Bioenergy and Bioproducts Industry - detailing U.S. biomass feedstock potential nationwide. The report examines the nation's capacity to produce a billion dry tons of biomass resources annually for energy uses without impacting other vital U.S. farm and forest products, such as food, feed, and fiber crops. The study provides industry, policymakers, and the agricultural community with county-level data and includes analyses of

200

Stabilization and reuse of heavy metal contaminated soils by means of quicklime sulfate salt treatment. Final report, September 1992--February 1995  

SciTech Connect

Capillary and hydraulic flows of water in porous media contaminated by heavy metal species often result in severe aquifer contamination. In the present study a chemical admixture stabilization approach is proposed, where heavy metal stabilization/immobilization is achieved by means of quicklime-based treatment. Both in-situ treatment by injection and on-site stabilization by excavation, mixing, and compaction will be investigated. In addition, the potential to reuse the resulting stabilized material as readily available construction material will also be investigated. The heavy metals under study include: arsenic, chromium, lead, and mercury. The proposed technical approach consists of three separate phases. During phase A, both artificial and naturally occurring contaminated soil mixes were treated, and then tested for stress-strain properties, leachability, micromorphology, mineralogical composition, permeability, setting time, and durability. In such a way, the effectiveness of the proposed remediation technology was verified, the treatment approach was optimized, and the underlying mechanisms responsible for stabilization were established. During phase B, the proposed technology will be tested for two DOE-site subscale systems, involving naturally occurring contaminated soil, using the same testing methodology as the one outlined for phase A. Provided that the proposed technology is proven effective for the subscale systems, a field application will be demonstrated. Again process quality monitoring will be performed by testing undisturbed samples collected from the treated sites, in the same fashion as for the previous phases. Following completion of the proposed study, a set of comprehensive guidelines for field applications will be developed. 42 refs., 196 figs., 26 tabs.

Dermatas, D.

1995-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

Selected heavy metals in tissues of bottlenose dolphins (Tursiops truncatus) stranded along thr Texas and Florida Gulf coasts  

E-Print Network (OSTI)

of bottlenose dolphins in other geographic regions. Two metal-metal correlations were examined in liver, kidney and muscle tissue. Strong positive correlations were found between mercury and selenium in the three tissues. No correlations existed between cadmium...

Haubold, Elsa Maria

2012-06-07T23:59:59.000Z

202

Removal of selected heavy metals from aqueous solutions using a solid by-product from the Jordanian oil shale refining  

Science Journals Connector (OSTI)

...?The potential use of treated solid by-product of oil shale to treat aqueous solutions containing several heavy ... Results indicate that the solid by-product of oil shale removes Cd(II), Cu(II),...

W. Y. Abu-El-Sha'r; S. H. Gharaibeh; M. M. Al-Kofahi

1999-12-01T23:59:59.000Z

203

Hanford Landfill Reaches 15 Million Tons Disposed - Waste Disposal Mark  

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

Landfill Reaches 15 Million Tons Disposed - Waste Disposal Landfill Reaches 15 Million Tons Disposed - Waste Disposal Mark Shows Success Cleaning Up River Corridor Hanford Landfill Reaches 15 Million Tons Disposed - Waste Disposal Mark Shows Success Cleaning Up River Corridor July 9, 2013 - 12:00pm Addthis Media Contacts Cameron Hardy, DOE, (509) 376-5365 Cameron.Hardy@rl.doe.gov Mark McKenna, WCH, (509) 372-9032 media@wch-rcc.com RICHLAND, Wash. - The U.S. Department of Energy (DOE) and its contractors have disposed of 15 million tons of contaminated material at the Environmental Restoration Disposal Facility (ERDF) since the facility began operations in 1996. Removing contaminated material and providing for its safe disposal prevents contaminants from reaching the groundwater and the Columbia River. ERDF receives contaminated soil, demolition debris, and solid waste from

204

Operational and maintenance manual, 100 ton hydraulic trailer  

SciTech Connect

The 100 ton hydraulic trailer is used to remove the mitigation pump from Tank 241SY101. This manual explains how to inspect, operate, and maintain the trailer in a state of readiness.

Koons, B.M.

1995-03-03T23:59:59.000Z

205

Heavy metal contaminants and processing effects on the composition, storage stability and fatty acid profiles of five common commercially available fish species in Oron Local Government, Nigeria  

Science Journals Connector (OSTI)

Five commercially available common fish species: catfish (Chsysichthyes nigrodigitatus), tilapia (Oreochromis nilotichus), ilisha (Ilisha africana), bonga (Ethmalosa fimbriata) and mudskipper (Periophthalmus koelreuteri) in Oron Local Government Area were evaluated for their content of heavy metals and the effects of salting on nutrient contents, oxidative stability and fatty acid profiles of smoke-dried fish cakes. Concentrations of heavy metals in edible muscle, liver and gill tissues were determined while the oxidative rancidities in unsalted and salted smoke-dried fish cakes, packed in low-density polyethylene (LDPE) bags and stored at 30 ± 1 °C were assessed using peroxide value (POV), thiobarbituric acid (TBA) value, free fatty acid (FFA) contents and sensory evaluation techniques. Generally the analytical data for Cu, Zn and Pb in the muscle, gills and liver of test samples were significantly low. Similarly, insignificant concentrations ( O. nilotichus > E. fimbriata >  I. africana > P. keolreuteri. Palmitic acid (C16:0) was the predominant saturated fatty acid in the test samples. The eicosapentaenoic acid (EPA) contents of unsalted smoke-dried C. nigrodigitatus was 4.9%, Oreochromis niloticus 6.5%, Ilisha africana 2.6%, E. fimbriata 5.6% and P. koelreuteri 7.64%. The docosahexaenoic acid (DHA) contents of salted smoked dried fish were 1.8% (C. nigrodigitatus), 4.8% (O. niloticus), 9.5% (I. africana), 5.5% (E. fimbriata) and 12.3% (P. koelreuteri).

Lucy Eboh; Horsfall D. Mepba; Mayo B. Ekpo

2006-01-01T23:59:59.000Z

206

Heavy metals in wastewater: Their removal through algae adsorption and their roles in microwave assisted pyrolysis of algae.  

E-Print Network (OSTI)

??Chlorella vulgaris was found as a good biosorbent for copper, zinc and aluminum. pH value, reaction time, initial metal and algal sorbents concentrations were considered… (more)

Zhao, Yuan

2012-01-01T23:59:59.000Z

207

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama  

E-Print Network (OSTI)

Elsevier Ltd. All rights reserved. Keywords: Coastal pollution; Sediment; Heavy metals; Mangrove; Laguncularia racemosa; Panama 1. Introduction Elevated concentrations of heavy metals have been re- corded allows metal mobilisation and bioavailability (Clark et al., 1998). Concentrations of heavy metals

Bermingham, Eldredge

208

Experimental investigation and thermodynamic modeling of extraction of heavy metal ions from aqueous solutions by chelation in supercritical carbon dioxide  

E-Print Network (OSTI)

disadvantages. First, the solvent/metal solution must be subsequently purified. Second, since the solvent may be miscible in the aqueous phase, the residual solvent must be removed from the water stream. These disadvantages can be eliminated by substituting...

Uyansoy, Hakki

2012-06-07T23:59:59.000Z

209

Magnetic properties as proxies for the evaluation of heavy metal contamination in urban street dusts of Nanjing, Southeast China  

Science Journals Connector (OSTI)

......toxicity, degradation-resistant characteristics and their high ecological transference potential (Shi et-al. 2011). Street dust...Maher B.A , Moore C., Matzka J. Spatial variation in vehicle derived metal pollution identified by magnetic and elemental......

Huiming Li; Xin Qian; Haitao Wei; Ruibin Zhang; Yang Yang; Zhe Liu; Wei Hu; Hailong Gao; Yulei Wang

2014-01-01T23:59:59.000Z

210

Artificial Neural Network Processing of Stripping Analysis Responses for Identifying and Quantifying Heavy Metals in the Presence of Intermetallic Compound Formation  

Science Journals Connector (OSTI)

Artificial Neural Network Processing of Stripping Analysis Responses for Identifying and Quantifying Heavy Metals in the Presence of Intermetallic Compound Formation ... Using simulated data, modeled after complex interactions experimentally observed in samples containing Cu and Zn, it has been demonstrated that networks containing two layers of neurons (a nonlinear hidden layer and a linear output layer) can be trained to calculate concentrations under a variety of complicated situations. ... The output of any particular neuron in a feed-forward neural network is determined by passing the sum of the weighted inputs through a transfer function, where the transfer function can have any of a variety of forms (linear and sigmoidal transfer functions are most common). ...

Helen Chan; Alexander Butler; David M. Falck; Michael S. Freund

1997-07-01T23:59:59.000Z

211

Identification and validation of heavy metal and radionuclide hyperaccumulating terrestrial plant species. Quarterly technical progress report, March 20, 1997--June 19, 1997  

SciTech Connect

This laboratory has been involved in a collaborative project focusing on a range of issues related to the phytoremediation of heavy metal-and radionuclide- contaminated soils. While much of the research has been fundamental in nature, involving physiological and molecular characterizations of the mechanisms of hyperaccumulation in plants, the laboratory is also investigating more practical issues related to phytoremediation. A central issue in this latter research has been the identification of amendments capable of increasing the bioavailability and subsequent phytoextraction of radionuclides. The results described here detail these efforts for uranium and Cs-137. A study was also conducted on a Cs-137 contaminated site at Brookhaven National Laboratory (BNL), which allowed application of the laboratory and greenhouse results to a field setting.

Kochian, L.

1997-11-01T23:59:59.000Z

212

Factory Acceptance Test Procedure Westinghouse 100 ton Hydraulic Trailer  

SciTech Connect

This Factory Acceptance Test Procedure (FAT) is for the Westinghouse 100 Ton Hydraulic Trailer. The trailer will be used for the removal of the 101-SY pump. This procedure includes: safety check and safety procedures; pre-operation check out; startup; leveling trailer; functional/proofload test; proofload testing; and rolling load test.

Aftanas, B.L. [Westinghouse Hanford Co., Richland, WA (United States)

1994-11-16T23:59:59.000Z

213

ZIRCONIUM AND HAFNIUM (Data in metric tons, unless otherwise noted)  

E-Print Network (OSTI)

. Import Sources (1995-98): Zirconium ores and concentrates: South Africa, 53%; Australia, 45%; and other Kingdom, 4%. Tariff: Item Number Normal Trade Relations 12/31/99 Zirconium ores and concentrates 2615.S. Department of Energy (DOE) held over 500 tons of zirconium in various forms. DOE also maintained a supply

214

ZIRCONIUM AND HAFNIUM (Data in metric tons, unless otherwise noted)  

E-Print Network (OSTI)

was insignificant. Import Sources (1996-99): Zirconium ores and concentrates: South Africa, 56%; Australia, 41, 4%; and other, 9%. Tariff: Item Number Normal Trade Relations 12/31/00 Zirconium ores.S. Department of Energy (DOE) held over 500 tons of zirconium in various forms. DOE also maintained a stockpile

215

A Îł-Glutamyl Cyclotransferase Protects Arabidopsis Plants from Heavy Metal Toxicity by Recycling Glutamate to Maintain Glutathione Homeostasis  

Science Journals Connector (OSTI)

...4. Following dialysis, total protein...without any metal treatments. Briefly, plant...linear gradient of water/0.05% phosphoric...LC-MS/MS (Waters Micromass triple...100% acidified water to 100% acidified...through positive electrospray ionization...For comparing treatments and control...

Bibin Paulose; Sudesh Chhikara; Joshua Coomey; Ha-il Jung; Olena Vatamaniuk; Om Parkash Dhankher

2013-11-08T23:59:59.000Z

216

Magnetic properties as indicators of heavy metals pollution in urban topsoils: a case study from the city of Luoyang, China  

Science Journals Connector (OSTI)

......the engine. The corrosion causes metal wear in the automobile engine and release of...dispersant improving agents for motor oil. Tire wear was also found to contribute a significant...between the ARM and PLI for the stream and marine sediments (Chan et al. 2001; Chaparro......

S. G. Lu; S. Q. Bai; Q. F. Xue

2007-11-01T23:59:59.000Z

217

Effects of heavy metals in sediments on the macroinvertebrate community in the Short Creek/Empire Lake aquatic system, Cherokee County, Kansas: A recommendation for site-specific criteria. Technical report (Final)  

SciTech Connect

This study uses statistical analysis techniques to determine the effects of four heavy metals (cadmium, lead, manganese, and zinc) on the macroinvertebrate community using the data collected in the fall 1987. The concentrations of all four metals were found to be greatly elevated throughout Empire Lake and in both the Spring River and Shoal Creek arms of the reservoir. It is concluded that density and species richness were greatly reduced. The report also includes recommendations for the upper bounds for the sediment criteria of the four metals.

Jobe, J.

1988-10-01T23:59:59.000Z

218

Heavy metals in eggshells of cattle egret (Bubulcus ibis) and little egret (Egretta garzetta) from the Punjab province, Pakistan  

Science Journals Connector (OSTI)

Concentrations of nine trace metals were determined to assess site-specific and species-specific differences using Fast Sequential Atomic Absorption Spectrophotometer (Varian FAAS-240) in eggshells of Bubulcus ibis and Egretta garzetta from seven heronries in the Punjab province, Pakistan. Pattern of metal concentration followed the order: Fe>Zn>Pb>Mn>Cd>Cr>Li>Cu>Ni. Greater mean concentrations of Mn(1.17 ?g/g), Ni(0.11 ?g/g), Pb(1.49 ?g/g), Cd(0.88 ?g/g), Cr(0.7 ?g/g), Cu(0.20 ?g/g) and Li(0.27 ?g/g) were recorded in little egret. Mean concentrations of Mn, Pb, and Cr, (3.98, 5.4, 0.8 ?g/g) were significantly higher in eggshells collected from Shorkot; Cu, Zn and Ni (0.19, 13.0, 0.12 ?g/g) from the Trimu Headwork; Cd (1.23 ?g/g) from Jhang Faisalabad Road and Fe (67.98 ?g/g) from Mailsi. Multivariate analyses indicated that Mn, Pb, Cd, Ni, Cu, Cr and Zn were associated with anthropogenic activities and Fe and Li with natural origin. This study provides the baseline data for a monitoring program and revealed that egg-shells can serve as a bio-monitor of local metal contamination.

Muhammad Zaffar Hashmi; Riffat Naseem Malik; Muhammad Shahbaz

2013-01-01T23:59:59.000Z

219

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2001, based on contained zinc recoverable from  

E-Print Network (OSTI)

188 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production-fourths of production. Three primary and 12 large- and medium-sized secondary smelters refined zinc metal of commercial principally by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining

220

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2002, based on contained zinc recoverable from  

E-Print Network (OSTI)

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production% of production. Two primary and 13 large- and medium-sized secondary smelters refined zinc metal of commercial principally by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining

Note: This page contains sample records for the topic "tons heavy metal" 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

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2004, based on contained zinc recoverable from  

E-Print Network (OSTI)

188 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production% of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters refined zinc metal were used principally by the agriculture, chemical, paint, and rubber industries. Major coproducts

222

Availability and distribution of heavy metals, nitrogen, and phosphorus from sewage sludge in the plant-soil-water continuum  

SciTech Connect

Research was conducted during 1984 and 1985 to determine Cd, Cu, N, Ni, P, and Zn availabilities to barley (Hordeum vulgare) and corn (Zea mays) grown on four sludge-amended soils. An aerobically digested sewage sludge, which was dewatered for approximately 2 years on sandbeds, was obtained from a sewage-treatment plant with major industrial inputs. A 14-day anaerobic N incubation study indicated that mineralization of sludge organic N varied from 9.2% at the 42 Mg ha(-1) sludge rate to 4.2% at the 210 Mg ha(-1) rate. This relatively low percentage of N mineralized from the sludge may reflect the inhibitory effects of the high sludge-metal levels on N transformations and the changes in sludge composition during long-term dewatering on sandbeds. Sludge application increased crop yields, except where the amounts of N mineralized from the sludge was inadequate to supply the N requirement of the crop. Crop yields were not decreased by either metal phytotoxity or P deficiency on the four sludge-amended soils.

Rappaport, B.D.; Scott, J.D.; Martens, D.C.; Reneau, R.B.; Simpson, T.W.

1987-01-01T23:59:59.000Z

223

Bioavailability of Cadmium and Zin to Two Earthworm Species in High-metal Soils  

E-Print Network (OSTI)

S.P. 1998. Toxicity of heavy metals to microorganism andtoxicity (Kizilkaya, Earthworm’s influence on heavy metalsof heavy metals in soil, is crucial to predict metals’ toxic

Liu, Ying

2012-01-01T23:59:59.000Z

224

1,153-ton Waste Vault Removed from 300 Area - Vault held waste...  

Energy Savers (EERE)

1,153-ton Waste Vault Removed from 300 Area - Vault held waste tanks with contamination from Hanford's former laboratory facilities 1,153-ton Waste Vault Removed from 300 Area -...

225

(Data in metric tons1 of silver content unless otherwise noted)  

E-Print Network (OSTI)

. This includes 60 to 90 tons of silver that are reclaimed and recycled annually from photographic wastewater 53 61 65 Recycling: Approximately 1,000 tons of silver was recovered from old and new scrap in 2006

226

Photo of the Week: Smashing Atoms with 80-ton Magnets | Department...  

Office of Environmental Management (EM)

Smashing Atoms with 80-ton Magnets Photo of the Week: Smashing Atoms with 80-ton Magnets April 11, 2014 - 1:32pm Addthis The cyclotron, invented by Ernest Lawrence in the 1930s, is...

227

Measurement of the Spin-Orbit Perturbation in the P-State Continuum of Heavy Alkali-Metal Atoms: K, Rb, and Cs  

Science Journals Connector (OSTI)

The spin-orbit interaction for the P-state continuum of heavy alkali metals was investigated in a photoionization experiment using spin-polarized alkali atoms and circularly polarized light. From the asymmetry in ion-counting rates corresponding to the two photon helicities, Fano's spin-orbit perturbation parameter x was determined over a range of several hundred angstroms for K, Rb, and Cs. The spin-orbit perturbation was found to increase from K to Rb to Cs as expected, and the nonlinear behavior of x as a function of the photon energy E was demonstrated for K. Knowledge of x(E) was used to establish accurate values for the position of the Cooper minimum and to estimate the magnitude of the cross section at the minimum. In addition, the x(E) data for Cs were used to gain information about the spin polarization of photoelectrons in a Fano-type polarized electron source. Finally, extrapolation of x(E) for cesium into the discrete spectrum indicated the existence of a pole in the function ?(E) which corresponds to the doublet line-strength ratio ?(EnP)=S(nP32)S(nP12) at the discrete energies EnP. According to our extrapolation, the pole lies in the region of n=10 to 15, in agreement with the early spectroscopic work of Sambursky (1928) and Beutell (1939), whose measurements were discounted by later investigators.

G. Baum; M. S. Lubell; W. Raith

1972-03-01T23:59:59.000Z

228

An Estimate of the Order of Magnitude of the Explosion During a Core Meltdown-Compaction Accident for Heavy Liquid Metal Fast Reactors: A disquieting result updating the Bethe-Tait model  

E-Print Network (OSTI)

but lasting over a timescale of milliseconds. The forms of the energy release and of the resulting struc- tural damage differ significantly between a high explosive detonation and a propellant conflagration. Considering the yield of TNT Containment Law... gravitational compaction of the 100 MWth core, the ves- sel could withstand the 60 kg TNT-equivalent explosion from a 100 $/s reactivity insertion if a bare core is as- sumed; however, allowing for the presence of the unboiled heavy liquid metal coolant...

Arias, Francisco J.; Parks, Geoffrey T.

2014-12-09T23:59:59.000Z

229

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

E-Print Network (OSTI)

and J. I. Drever (1997), Toxicity of heavy metals (Ni,Zn) to2001), Acute toxicity of heavy metals to acetate-utilizing

Gough, Heidi L.

2011-01-01T23:59:59.000Z

230

Metal-binding polymesr as chelating agents  

E-Print Network (OSTI)

Abstract Metal chelating polymers are functional polymers that bear specified chemical groups capable of selectively binding metals. Heavy metal contamination is considered a serious problem because these metals, even at ...

Mohammadi, Zahra

2011-04-11T23:59:59.000Z

231

Transportation system benefits of early deployment of a 75-ton multipurpose canister system  

SciTech Connect

In 1993 the US Civilian Radioactive Waste Management System (CRWMS) began developing two multipurpose canister (MPC) systems to provide a standardized method for interim storage and transportation of spent nuclear fuel (SNF) at commercial nuclear power plants. One is a 75-ton concept with an estimated payload of about 6 metric tons (t) of SNF, and the other is a 125-ton concept with an estimated payload of nearly 11 t of SNF. These payloads are two to three times the payloads of the largest currently certified US rail transport casks, the IF-300. Although is it recognized that a fully developed 125-ton MPC system is likely to provide a greater cost benefit, and radiation exposure benefit than the lower-capacity 75-ton MPC, the authors of this paper suggest that development and deployment of the 75-ton MPC prior to developing and deploying a 125-ton MPC is a desirable strategy. Reasons that support this are discussed in this paper.

Wankerl, M.W. [Oak Ridge National Lab., TN (United States); Schmid, S.P. [Science Applications International Corp., Oak Ridge, TN (United States)

1995-12-31T23:59:59.000Z

232

Radionuclides, Heavy Metals, and Polychlorinated Biphenyls in Soils Collected Around the Perimeter of Low-Level Radioactive Waste Disposal Area G during 2006  

SciTech Connect

Twenty-one soil surface samples were collected in March around the perimeter of Area G, the primary disposal facility for low-level radioactive solid waste at Los Alamos National Laboratory (LANL). Three more samples were collected in October around the northwest corner after elevated tritium levels were detected on an AIRNET station located north of pit 38 in May. Also, four soil samples were collected along a transect at various distances (48, 154, 244, and 282 m) from Area G, starting from the northeast corner and extending to the Pueblo de San Ildefonso fence line in a northeasterly direction (this is the main wind direction). Most samples were analyzed for radionuclides ({sup 3}H, {sup 238}Pu, {sup 239,240}Pu, {sup 241}Am, {sup 234}U, {sup 235}U, and {sup 238}U), inorganic elements (Al, Ba, Be, Ca, Cr, Co, Cu, Fe, Mg, Mn, Ni, K, Na, V, Hg, Zn, Sb, As, Cd, Pb, Se, Ag, and Tl) and polychlorinated biphenyl (PCB) concentrations. As in previous years, the highest levels of {sup 3}H in soils (690 pCi/mL) were detected along the south portion of Area G near the {sup 3}H shafts; whereas, the highest concentrations of {sup 241}Am (1.2 pCi/g dry) and the Pu isotopes (1.9 pCi/g dry for {sup 238}Pu and 5 pCi/g dry for {sup 239,240}Pu) were detected along the northeastern portions near the transuranic waste pads. Concentrations of {sup 3}H in three soil samples and {sup 241}Am and Pu isotopes in one soil sample collected around the northwest corner in October increased over concentrations found in soils collected at the same locations earlier in the year. Almost all of the heavy metals, with the exception of Zn and Sb in one sample each, in soils around the perimeter of Area G were below regional statistical reference levels (mean plus three standard deviations) (RSRLs). Similarly, only one soil sample collected on the west side contained PCB concentrations--67 {micro}g/kg dry of aroclor-1254 and 94 {micro}g/kg dry of aroclor-1260. Radionuclide and inorganic element concentrations in soils collected along a transect from Area G to the Pueblo de San Ildefonso fence line show that most contained concentrations of {sup 241}Am, {sup 238}Pu, and {sup 239,240}Pu above the RSRLs. Overall, all concentrations of radionuclides, heavy metals, and PCBs that were detected above background levels in soils collected around the perimeter of Area G and towards the Pueblo de San Ildefonso boundary were still very low and far below LANL screening levels and regulatory standards.

P. R. Fresquez

2007-02-28T23:59:59.000Z

233

Acceptance test report for the Westinghouse 100 ton hydraulic trailer  

SciTech Connect

The SY-101 Equipment Removal System 100 Ton Hydraulic Trailer was designed and built by KAMP Systems, Inc. Performance of the Acceptance Test Procedure at KAMP`s facility in Ontario, California (termed Phase 1 in this report) was interrupted by discrepancies noted with the main hydraulic cylinder. The main cylinder was removed and sent to REMCO for repair while the trailer was sent to Lampson`s facility in Pasco, Washington. The Acceptance Test Procedure was modified and performance resumed at Lampson (termed Phase 2 in this report) after receipt of the repaired cylinder. At the successful conclusion of Phase 2 testing the trailer was accepted as meeting all the performance criteria specified.

Barrett, R.A.

1995-03-06T23:59:59.000Z

234

Moab Project Disposes 2 Million Tons of Uranium Mill Tailings with Recovery  

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

Moab Project Disposes 2 Million Tons of Uranium Mill Tailings with Moab Project Disposes 2 Million Tons of Uranium Mill Tailings with Recovery Act Funds Moab Project Disposes 2 Million Tons of Uranium Mill Tailings with Recovery Act Funds The Moab Uranium Mill Tailings Remedial Action Project reached its primary American Recovery and Reinvestment Act milestone ahead of schedule on Wednesday with the disposal of 2 million tons of uranium mill tailings. The project had originally planned to ship 2 million tons of tailings with Recovery Act funds. Now, Recovery Act workers are surpassing that goal. Moab Project Disposes 2 Million Tons of Uranium Mill Tailings with Recovery Act Funds More Documents & Publications EIS-0355: Record of Decision EIS-0355: Draft Environmental Impact Statement EIS-0355: Final Environmental Impact Statement

235

Energy Cost Calculator for Commercial Heat Pumps (5.4 >=< 20 Tons) |  

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

Heat Pumps (5.4 >=< 20 Tons) Heat Pumps (5.4 >=< 20 Tons) Energy Cost Calculator for Commercial Heat Pumps (5.4 >=< 20 Tons) October 8, 2013 - 2:22pm Addthis Vary equipment size, energy cost, hours of operation, and /or efficiency level. INPUT SECTION Input the following data (if any parameter is missing, calculator will set to default value). Defaults Project Type New Installation Replacement New Installation Condenser Type Air Source Water Source Air Source Existing Capacity * ton - Existing Cooling Efficiency * EER - Existing Heating Efficiency * COP - Existing IPLV Efficiency * IPLV - New Capacity ton 10 tons New Cooling Efficiency EER 10.1 EER New Heating Efficiency COP 3.2 COP New IPLV Efficiency IPLV 10.4 IPLV Energy Cost $ per kWh $0.06 per kWh

236

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

concentrates: South Africa, 52%; Australia, 43%; and other, 5%. Zirconium, unwrought, including powder: Japan. The leading consumers of zirconium metal and hafnium metal are the nuclear energy and chemical process, 58%; Australia, 24%; Germany, 11%; other, 7%. Tariff: Item Number Normal Trade Relations 12

237

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

was insignificant. Import Sources (2008­11): Zirconium mineral concentrates: Australia, 52%; South Africa, 42. The leading consumers of zirconium metal and hafnium metal are the nuclear energy and chemical process: Item Number Normal Trade Relations 12­31­12 Zirconium ores and concentrates 2615.10.0000 Free

238

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

concentrates: Australia, 49%; South Africa, 44%; and other, 7%. Zirconium, unwrought, including powder: Germany. The leading consumers of zirconium metal and hafnium metal are the nuclear energy and chemical process, 17%; United Kingdom, 5%; and other, 9%. Tariff: Item Number Normal Trade Relations 12-31-11 Zirconium

239

Accumulation of Pb and Cu heavy metals in sea water, sediment, and leaf and root tissue of Enhalus sp. in the seagrass bed of Banten Bay  

SciTech Connect

Banten Bay in Indonesia is a coastal area which has been highly affected by human activity. Previous studies have reported the presence of lead (Pb) and copper (Cu) heavy metals in the seawater of this area. This study was conducted to measure the accumulation of Pb and Cu in seawater, sediment, leaf tissue, and root tissue of the seagrass species Enhalus sp. Sampling was conducted at two observation stations in Banten Bay: Station 1 (St.1) was located closer to the coastline and to industrial plants as source of pollution, while Station 2 (St.2) was located farther away offshore. At each station, three sampling points were established by random sampling. Field sampling was conducted at two different dates, i.e., on 29 May 2012 and 30 June 2012. Samples were processed by wet ashing using concentrated HNO{sub 3} acid and measured using Atomic Absorption Spectrometry (AAS). Accumulation of Pb was only detected in sediment samples in St.1, while Cu was detected in all samples. Average concentrations of Cu in May were as follows: sediment St.1 = 0.731 ppm, sediment St.2 = 0.383 ppm, seawater St.1 = 0.163 ppm, seawater St.2 = 0.174 ppm, leaf St.1 = 0.102 ppm, leaf St.2 = 0.132 ppm, root St.1= 0.139 ppm, and root St.2 = 0.075 ppm. Average measurements of Cu in June were: sediment St.1 = 0.260 ppm, leaf St.1 = 0.335 ppm, leaf St.2 = 0.301 ppm, root St.1= 0.047 ppm, and root St.2 = 0.060 ppm. In June, Cu was undetected in St.2 sediment and seawater at both stations. In May, Cu concentration in seawater exceeded the maximum allowable threshold for water as determined by the Ministry of the Environment. Spatial and temporal variation in Pb and Cu accumulation were most probably affected by distance from source and physical conditions of the environment (e.g., water current and mixing)

Fauziah, Faiza, E-mail: faiza.fauziah@gmail.com; Choesin, Devi N., E-mail: faiza.fauziah@gmail.com [School of Life Sciences and Technology, Institut Teknologi Bandung, Jalan Ganeca 10, Bandung 40132 (Indonesia)

2014-03-24T23:59:59.000Z

240

U.S. Billion-Ton Update: Biomass Supply for a Bioenergy and Bioproducts Industry  

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

An update to the 2005 report, "Biomass as a Feedstock for a Bioenergy and Bioproducts Industry: The Technical Feasibility of a Billion-Ton Annual Supply"

Note: This page contains sample records for the topic "tons heavy metal" 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

Coupling and Testing the Fate and Transport of Heavy Metals and Other Ionic Species in a Groundwater Setting at Oak Ridge, TN - 13498  

SciTech Connect

Historical data show that heavy metals (including mercury) were released from Y -12 National Security Complex (NSC) at Oak Ridge, Tennessee, to the surrounding environments during its operation in 1950's. Studies have also shown that metals accumulated in the soil, rock, and groundwater, and are, at the present time, sources of contamination to nearby rivers and creeks (e.g., East Fork Poplar Creek, Bear Creek). For instance, mercury (Hg), zinc (Zn), cadmium (Cd) and lead (Pb) have been found and reported on the site groundwater. The groundwater type at the site is Ca-Mg-HCO{sub 3}. This paper presents a modeling application of PHREEQC, a model that simulates geochemical processes and couples them to flow and transport settings. The objective was to assess the capability of PHREEQC to simulate the transport of ionic species in groundwater at Oak Ridge, Tennessee; data were available from core holes and monitoring wells over a 736-m distance, within 60-300 m depths. First, predictions of the transport of major ionic species (i.e., Ca{sup 2+} and Mg{sup 2+}) in the water were made between monitoring wells and for GW-131. Second, the model was used to assess hypotheses under two scenarios of transport for Zn, Cd, Pb and Hg, in Ca-Mg-HCO{sub 3} water, as influenced by the following solid-liquid interactions: a) the role of ion exchange and b) the role of both ion exchange and sorption, the latter via surface complexation with Fe(OH){sub 3}. The transport scenario with ion exchange suggests that significant ion exchange is expected to occur for Zn, Cd and Pb concentrations, with no significant impact on Hg, within the first 100 m. Predictions match the expected values of the exchange coefficients relative to Ca{sup 2+} and Mg{sup 2+} (e.g., K{sub Ca/Zn} = K{sub Ca/Cd} > K{sub Ca/Pb} > K{sub Ca/Hg}). The scenario with both ion exchange and sorption does affect the concentrations of Zn and Cd to a small extent within the first 100 m, but does more meaningfully reduce the concentration of Pb, within the same distance, and also decreases the concentration of Hg in between core holes. Analysis of the above results, in the light of available literature on the ions of this study, does fundamentally support the capability of PHREEQC to predict the transport of major ions in a groundwater setting; it also generally supports the hypothesized role of ion exchange and sorption. The results indicate the potential of the model as a tool in the screening, selection and monitoring of remediation technologies for contaminated groundwater sites. (authors)

Noosai, Nantaporn; Fuentes, Hector R. [CEE Florida International University, Miami, FL 33174 (United States)] [CEE Florida International University, Miami, FL 33174 (United States)

2013-07-01T23:59:59.000Z

242

Use of Heavy Oil Fly Ash as a Color Ingredient in Cement Mortar  

Science Journals Connector (OSTI)

Heavy oil fly ash (HOFA) is a byproduct generated by the burning of heavy fuel oil. Chemical analysis showed that HOFA is mainly composed of unburned carbon with a significant amount of heavy metals. Due to to...

Abdullah Mofarrah; Tahir Husain

2013-06-01T23:59:59.000Z

243

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2007, based on zinc contained in concentrate, was about  

E-Print Network (OSTI)

190 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production U.S. production. One primary and 12 large- and medium-sized secondary smelters refined zinc metal by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining and smelting, in order

244

Disposal Facility Reaches 15-Million-Ton Milestone | Department of Energy  

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

Disposal Facility Reaches 15-Million-Ton Milestone Disposal Facility Reaches 15-Million-Ton Milestone Disposal Facility Reaches 15-Million-Ton Milestone July 30, 2013 - 12:00pm Addthis Matt McCormick, manager of the Richland Operations Office, commends a large group of Hanford workers for the 15-million-ton milestone at a public event at the Environmental Restoration Disposal Facility. Matt McCormick, manager of the Richland Operations Office, commends a large group of Hanford workers for the 15-million-ton milestone at a public event at the Environmental Restoration Disposal Facility. RICHLAND, Wash. - EM's Environmental Restoration Disposal Facility (ERDF) - a massive landfill for low-level radioactive and hazardous waste at the Hanford site - has achieved a major cleanup milestone. Since beginning operations in 1996, workers supporting the Richland

245

U.S. Removes Nine Metric Tons of Plutonium From Nuclear Weapons Stockpile |  

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

Removes Nine Metric Tons of Plutonium From Nuclear Weapons Removes Nine Metric Tons of Plutonium From Nuclear Weapons Stockpile U.S. Removes Nine Metric Tons of Plutonium From Nuclear Weapons Stockpile September 17, 2007 - 2:41pm Addthis Declaration Reinforces U.S. Commitment to Nonproliferation VIENNA, AUSTRIA - Secretary of Energy Samuel W. Bodman today announced that the Department of Energy's National Nuclear Security Administration (NNSA) will remove nine metric tons of plutonium from further use as fissile material in U.S. nuclear weapons, signifying the Bush Administration's ongoing commitment to nonproliferation. Nine metric tons of plutonium is enough material to make over 1,000 nuclear weapons. The Secretary made today's announcement while speaking before the International Atomic Energy Agency's annual general conference.

246

Billion-Ton Update: Home-Grown Energy Resources Across the Nation |  

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

Billion-Ton Update: Home-Grown Energy Resources Across the Nation Billion-Ton Update: Home-Grown Energy Resources Across the Nation Billion-Ton Update: Home-Grown Energy Resources Across the Nation August 11, 2011 - 3:59pm Addthis Total potential biomass resources by county in the contiguous U.S. from the baseline scenario of the Update (Figure 6.4, page 159) | Map from Billion-Ton Update Total potential biomass resources by county in the contiguous U.S. from the baseline scenario of the Update (Figure 6.4, page 159) | Map from Billion-Ton Update Paul Bryan Biomass Program Manager, Office of Energy Efficiency & Renewable Energy What does this mean for me? With continued developments in biorefinery capacity and technology, the feedstock resources identified in the report could produce about 85 billion gallons of biofuels -- enough to replace approximately 30 percent

247

U.S. Removes Nine Metric Tons of Plutonium From Nuclear Weapons Stockpile |  

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

U.S. Removes Nine Metric Tons of Plutonium From Nuclear Weapons U.S. Removes Nine Metric Tons of Plutonium From Nuclear Weapons Stockpile U.S. Removes Nine Metric Tons of Plutonium From Nuclear Weapons Stockpile September 17, 2007 - 2:41pm Addthis Declaration Reinforces U.S. Commitment to Nonproliferation VIENNA, AUSTRIA - Secretary of Energy Samuel W. Bodman today announced that the Department of Energy's National Nuclear Security Administration (NNSA) will remove nine metric tons of plutonium from further use as fissile material in U.S. nuclear weapons, signifying the Bush Administration's ongoing commitment to nonproliferation. Nine metric tons of plutonium is enough material to make over 1,000 nuclear weapons. The Secretary made today's announcement while speaking before the International Atomic Energy Agency's annual general conference.

248

6 Million Tons of Mill Tailings Removed From DOE Moab Project Site |  

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

6 Million Tons of Mill Tailings Removed From DOE Moab Project Site 6 Million Tons of Mill Tailings Removed From DOE Moab Project Site 6 Million Tons of Mill Tailings Removed From DOE Moab Project Site June 18, 2013 - 12:00pm Addthis Media Contacts Donald Metzler, Moab Federal Project Director (970) 257-2115 Wendee Ryan, S&K Aerospace Public Affairs Manager (970) 257-2145 (Grand Junction, CO) - Today, the Department of Energy (DOE) announced that 6 million tons of uranium mill tailings have been shipped from Moab, Utah, under the Uranium Mill Tailings Remedial Action Project to an engineered disposal cell near Crescent Junction, Utah. The shipments mark continued progress toward relocating the 16-million-ton uranium mill tailings pile away from the Colorado River. "The federal budget continues to be stretched thin, and I am proud this

249

6 Million Tons of Mill Tailings Removed From DOE Moab Project Site |  

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

6 Million Tons of Mill Tailings Removed From DOE Moab Project Site 6 Million Tons of Mill Tailings Removed From DOE Moab Project Site 6 Million Tons of Mill Tailings Removed From DOE Moab Project Site June 18, 2013 - 12:00pm Addthis Media Contacts Donald Metzler, Moab Federal Project Director (970) 257-2115 Wendee Ryan, S&K Aerospace Public Affairs Manager (970) 257-2145 (Grand Junction, CO) - Today, the Department of Energy (DOE) announced that 6 million tons of uranium mill tailings have been shipped from Moab, Utah, under the Uranium Mill Tailings Remedial Action Project to an engineered disposal cell near Crescent Junction, Utah. The shipments mark continued progress toward relocating the 16-million-ton uranium mill tailings pile away from the Colorado River. "The federal budget continues to be stretched thin, and I am proud this

250

Moab Mill Tailings Removal Project Reaches 5 Million Tons Disposed: Project  

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

Moab Mill Tailings Removal Project Reaches 5 Million Tons Disposed: Moab Mill Tailings Removal Project Reaches 5 Million Tons Disposed: Project Accomplishes Milestone While Doing it Safely Moab Mill Tailings Removal Project Reaches 5 Million Tons Disposed: Project Accomplishes Milestone While Doing it Safely February 27, 2012 - 12:00pm Addthis Media Contacts Donald Metzler, Moab Federal Project Director, (970) 257-2115 Wendee Ryan, S&K Aerospace Public Affairs Manager, (970) 257-2145 Grand Junction, CO- The U.S. Department of Energy (DOE) reached another milestone today for the Uranium Mill Tailings Remedial Action Project, having shipped 5 million tons of tailings from the massive pile located in Moab, Utah, to the engineered disposal cell near Crescent Junction, Utah. The pile comprised an estimated 16 million tons total when DOE's Remedial

251

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

%; South Africa, 37%; China, 3%; Canada, 1%; and other, 2%. Zirconium, unwrought, including powder: France coatings, and sandblasting. The leading consumers of zirconium and hafnium metal are the nuclear energy Kingdom, 5%; and other, 9%. Tariff: Item Number Normal Trade Relations 12-31-08 Zirconium ores

252

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

Sources (2002-05): Zirconium ores and concentrates: Australia, 57%; South Africa, 35%; China, 4%; Canada consumers of zirconium and hafnium metal are the nuclear energy and chemical process industries. Salient%; Japan, 4%; and other, 2%. Tariff: Item Number Normal Trade Relations 12-31-06 Zirconium ores

253

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

%; South Africa, 46%; China, 3%; Russia, 1%; and other, 1%. Zirconium, unwrought, including powder: France coatings, and sandblasting. The leading consumers of zirconium and hafnium metal are the nuclear energy, 21%; Canada, 8%; United Kingdom, 6%; and other, 5%. Tariff: Item Number Normal Trade Relations 12

254

ZIRCONIUM AND HAFNIUM (Data in metric tons unless otherwise noted)  

E-Print Network (OSTI)

%; South Africa, 32%; China, 4%; Canada, 2%; and other, 1%. Zirconium, unwrought, including powder: France coatings, and sandblasting. The leading consumers of zirconium and hafnium metal are the nuclear energy, 2%; Austria, 1%; and other, 1%. Tariff: Item Number Normal Trade Relations 12-31-07 Zirconium ores

255

Aging of Iron (Hydr)oxides by Heat Treatment and Effects on Heavy  

E-Print Network (OSTI)

)oxides are used to remove heavy metals from wastewater and in the treatment of air pollution control residuesAging of Iron (Hydr)oxides by Heat Treatment and Effects on Heavy Metal Binding M E T T E A . S Ă? R generated in waste incineration. In this study, iron oxides containing heavy metals (e.g., Pb, Hg, Cr

Frenkel, Anatoly

256

DOE-Sponsored Mississippi Project Hits 1-Million-Ton Milestone for Injected  

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

Mississippi Project Hits 1-Million-Ton Milestone for Mississippi Project Hits 1-Million-Ton Milestone for Injected CO2 DOE-Sponsored Mississippi Project Hits 1-Million-Ton Milestone for Injected CO2 November 5, 2009 - 12:00pm Addthis Washington, DC - A large-scale carbon dioxide (CO2) storage project in Mississippi has become the fifth worldwide to reach the important milestone of more than 1 million tons injected. As a result, it is helping to both further carbon capture and storage (CCS) as a mitigation strategy for global climate change and move forward G-8 recommendations for launching 20 projects of this type internationally by 2010. The project, sponsored by the U.S. Department of Energy's (DOE) Office of Fossil Energy (FE), is located at the Cranfield site in Southwestern Mississippi. It is led by the Southeast Regional Carbon Sequestration

257

Moab Project Disposes 2 Million Tons of Uranium Mill Tailings with Recovery Act Funds  

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

The Moab Uranium Mill Tailings Remedial Action The Moab Uranium Mill Tailings Remedial Action Project reached its primary American Recovery and Reinvestment Act milestone ahead of schedule on Wednesday with the disposal of 2 million tons of uranium mill tailings. The project had originally planned to ship 2 million tons of tailings with Recovery Act funds. Now, Recovery Act workers are surpass- ing that goal. "Although shipping 2 million tons was the original Recovery Act goal, we are planning to exceed this goal by shipping about 300,000 tons more using savings resulting from efficiencies we've gained in our first 2 years of moving tailings," Moab Federal Project Director Donald Metzler said. The project is using $108 million from the Recovery Act to move the tailings from the banks of the Colorado River by rail to a permanent

258

Moab Marks 6-Million-Ton Cleanup Milestone | Department of Energy  

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

Moab Marks 6-Million-Ton Cleanup Milestone Moab Marks 6-Million-Ton Cleanup Milestone Moab Marks 6-Million-Ton Cleanup Milestone June 20, 2013 - 12:00pm Addthis At Tuesday's Grand County Council meeting in Utah, Moab Federal Project Director Donald Metzler, center, moves a piece from a plaque representing Moabñ€™s uranium mill tailings pile to a plaque representing the disposal cell in recognition of the site achieving a milestone by shipping 6 million tons of the tailings. Grand County Council Chair Gene Ciarus is on the left and Grand County Council Vice Chair Lynn Jackson is on the right. At Tuesday's Grand County Council meeting in Utah, Moab Federal Project Director Donald Metzler, center, moves a piece from a plaque representing Moab's uranium mill tailings pile to a plaque representing the disposal

259

DOE to Remove 200 Metric Tons of Highly Enriched Uranium from U.S. Nuclear  

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

to Remove 200 Metric Tons of Highly Enriched Uranium from U.S. to Remove 200 Metric Tons of Highly Enriched Uranium from U.S. Nuclear Weapons Stockpile DOE to Remove 200 Metric Tons of Highly Enriched Uranium from U.S. Nuclear Weapons Stockpile November 7, 2005 - 12:38pm Addthis Will Be Redirected to Naval Reactors, Down-blended or Used for Space Programs WASHINGTON, DC - Secretary of Energy Samuel W. Bodman today announced that the Department of Energy's (DOE) National Nuclear Security Administration (NNSA) will remove up to 200 metric tons (MT) of Highly Enriched Uranium (HEU), in the coming decades, from further use as fissile material in U.S. nuclear weapons and prepare this material for other uses. Secretary Bodman made this announcement while addressing the 2005 Carnegie International Nonproliferation Conference in Washington, DC.

260

DOE Moab Project Safely Removes 7 Million Tons of Mill Tailings  

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

(Grand Junction, CO) ? The U.S. Department of Energy (DOE) has safely moved another million tons of uranium mill tailings from the Moab site in Utah under the Uranium Mill Tailings Remedial Action Project.

Note: This page contains sample records for the topic "tons heavy metal" 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

9,248,559 Metric Tons of CO2 Injected as of January 16, 2015  

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

This carbon dioxide (CO2) has been injected in the United States as part of DOE’s Clean Coal Research, Development, and Demonstration Programs. One million metric tons of CO2 is equivalent to the...

262

Experimental studies of 1 ton/day coal slurry feed type oxygen blown, entrained flow gasifier  

Science Journals Connector (OSTI)

Experimental Studies of a 1 Ton/Day coal slurry feed type oxygen blown, entrained flow gasifier have been performed with the slurry concentration and gasifier temperature at 65% and above 1,300...2.../coal feed r...

Young-Chan Choi; Tae-Jun Park; Jae-Ho Kim…

2001-07-01T23:59:59.000Z

263

9,449,421 Metric Tons of CO2 Injected as of February 12, 2015...  

Energy Savers (EERE)

This carbon dioxide (CO2) has been injected in the United States as part of DOE's Clean Coal Research, Development, and Demonstration Programs. One million metric tons of CO2 is...

264

U.S. Billion-Ton Update: Biomass Supply for a Bioenergy and Bioproduct...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

GW. 1986. Biomass production from herbaceous plant. In biomass energy development. WH Smith (ed.). Plenum Press, New York, NY. pp. 163-175. 165 U.S. BILLION-TON UPDATE: BIOMASS...

265

Purification of alkali metal nitrates  

DOE Patents (OSTI)

A process is disclosed for removing heavy metal contaminants from impure alkali metal nitrates containing them. The process comprises mixing the impure nitrates with sufficient water to form a concentrated aqueous solution of the impure nitrates, adjusting the pH of the resulting solution to within the range of between about 2 and about 7, adding sufficient reducing agent to react with heavy metal contaminants within said solution, adjusting the pH of the solution containing reducing agent to effect precipitation of heavy metal impurities and separating the solid impurities from the resulting purified aqueous solution of alkali metal nitrates. The resulting purified solution of alkali metal nitrates may be heated to evaporate water therefrom to produce purified molten alkali metal nitrate suitable for use as a heat transfer medium. If desired, the purified molten form may be granulated and cooled to form discrete solid particles of alkali metal nitrates.

Fiorucci, Louis C. (Hamden, CT); Gregory, Kevin M. (Woodridge, IL)

1985-05-14T23:59:59.000Z

266

The Influence of Metal Pollution on the Immune System A Potential Stressor for Marine Mammals in the North Sea  

E-Print Network (OSTI)

Kaliszan, R. (1996). Heavy metal pollution in surficialHeavy metals in Baltic herring and cod. Marine Pollutionheavy metals and infectious disease mortality in harbour porpoises from England and Wales. Environmental Pollution,

Kakuschke, Antje; Prange, Andreas

2007-01-01T23:59:59.000Z

267

[Task 1.] Biodenitrification of low nitrate solar pond waters using sequencing batch reactors. [Task 2.] Solidification/stabilization of high strength and biodenitrified heavy metal sludges with a Portland cement/flyash system  

SciTech Connect

Process wastewater and sludges were accumulated on site in solar evaporation ponds during operations at the Department of Energy's Rocky Flats Plant (DOE/RF). Because of the extensive use of nitric acid in the processing of actinide metals, the process wastewater has high concentrations of nitrate. Solar pond waters at DOE/RF contain 300-60,000 mg NO{sub 3}{sup {minus}}/L. Additionally, the pond waters contain varying concentrations of many other aqueous constituents, including heavy metals, alkali salts, carbonates, and low level radioactivity. Solids, both from chemical precipitation and soil material deposition, are also present. Options for ultimate disposal of the pond waters are currently being evaluated and include stabilization and solidification (S/S) by cementation. Removal of nitrates can enhance a wastes amenability to S/S, or can be a unit operation in another treatment scheme. Nitrate removal is also a concern for other sources of pollution at DOE/RF, including contaminated groundwater collected by interceptor trench systems. Finally, nitrate pollution is a problem at many other DOE facilities where actinide metals were processed. The primary objective of this investigation was to optimize biological denitrification of solar pond waters with nitrate concentrations of 300--2,100 mg NO{sub 3}{sup {minus}}/L to below the drinking water standard of 45 mg NO{sub 3}{sup {minus}}/L (10 mg N/L). The effect of pH upon process stability and denitrification rate was determined. In addition, the effect Cr(VI) on denitrification and fate of Cr(VI) in the presence of denitrifying bacteria was evaluated.

Figueroa, L.; Cook, N.E.; Siegrist, R.L.; Mosher, J.; Terry, S.; Canonico, S.

1995-09-22T23:59:59.000Z

268

Methods and results for stress analyses on 14-ton, thin-wall depleted UF{sub 6} cylinders  

SciTech Connect

Uranium enrichment operations at the three US gaseous diffusion plants produce depleted uranium hexafluoride (DUF{sub 6}) as a residential product. At the present time, the inventory of DUF{sub 6} in this country is more than half a million tons. The inventory of DUF{sub 6} is contained in metal storage cylinders, most of which are located at the gaseous diffusion plants. The principal objective of the project is to ensure the integrity of the cylinders to prevent causing an environmental hazard by releasing the contents of the cylinders into the atmosphere. Another objective is to maintain the cylinders in such a manner that the DUF{sub 6} may eventually be converted to a less hazardous material for final disposition. An important task in the DUF{sub 6} cylinders management project is determining how much corrosion of the walls can be tolerated before the cylinders are in danger of being damaged during routine handling and shipping operations. Another task is determining how to handle cylinders that have already been damaged in a manner that will minimize the chance that a breach will occur or that the size of an existing breach will be significantly increased. A number of finite element stress analysis (FESA) calculations have been done to analyze the stresses for three conditions: (1) while the cylinder is being lifted, (2) when a cylinder is resting on two cylinders under it in the customary two-tier stacking array, and (3) when a cylinder is resting on tis chocks on the ground. Various documents describe some of the results and discuss some of the methods whereby they have been obtained. The objective of the present report is to document as many of the FESA cases done at Oak Ridge for 14-ton thin-wall cylinders as possible, giving results and a description of the calculations in some detail.

Kirkpatrick, J.R.; Chung, C.K.; Frazier, J.L.; Kelley, D.K.

1996-10-01T23:59:59.000Z

269

DOE Partner Begins Injecting 50,000 Tons of CO2 in Michigan Basin |  

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

Partner Begins Injecting 50,000 Tons of CO2 in Michigan Basin Partner Begins Injecting 50,000 Tons of CO2 in Michigan Basin DOE Partner Begins Injecting 50,000 Tons of CO2 in Michigan Basin February 27, 2009 - 12:00pm Addthis Washington, D.C. -- Building on an initial injection project of 10,000 metric tons of carbon dioxide (CO2) into a Michigan geologic formation, a U.S. Department of Energy (DOE) team of regional partners has begun injecting 50,000 additional tons into the formation, which is believed capable of storing hundreds of years worth of CO2, a greenhouse gas that contributes to climate change. DOE's Midwest Regional Carbon Sequestration Partnership (MRCSP), led by Battelle of Columbus, Ohio, began injecting the CO2 this week in the Michigan Basin near Gaylord, Mich., in a deep saline formation, the Silurian-age Bass Island dolomite. The MRCSP is one of seven partnerships

270

Modeling Multi-Metal Ion Exchange in Biosorption  

E-Print Network (OSTI)

, may serve as a means for purifying industrial wastewaters that contain toxic heavy metal ions heavy metals often through ion exchange. This biosorption can be used for purification of metalModeling Multi-Metal Ion Exchange in Biosorption S I L K E S C H I E W E R A N D B O H U M I L V O

Volesky, Bohumil

271

Adsorption of Chromium (VI) by metal hydroxide sludge from the metal finishing  

E-Print Network (OSTI)

and Management, United States (2008)" #12;2 1 Introduction Industrial aqueous pollution (heavy metals) accounts sludge (MHS) during the treatment of their liquid effluents charged with heavy metals. Generally, a small for 30 to 40% of industrial pollution. Metal finishing is one of the sectors which contributes mostly

Paris-Sud XI, Université de

272

NETL: News Release - DOE Partner Begins Injecting 50,000 Tons of Carbon  

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

February 27, 2009 February 27, 2009 DOE Partner Begins Injecting 50,000 Tons of Carbon Dioxide in Michigan Basin Project Expected to Advance National Carbon Sequestration Program, Create Jobs Washington, DC-Building on an initial injection project of 10,000 metric tons of carbon dioxide (CO2) into a Michigan geologic formation, a U.S. Department of Energy (DOE) team of regional partners has begun injecting 50,000 additional tons into the formation, which is believed capable of storing hundreds of years worth of CO2, a greenhouse gas that contributes to climate change. MORE INFO Learn more about DOE's Regional Carbon Sequestration Partnership Program DOE's Midwest Regional Carbon Sequestration Partnership (MRCSP), led by Battelle of Columbus, Ohio, began injecting the CO2 this week in the

273

NNSA's Global Threat Reduction Initiative Removes More Than One Ton of  

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

Removes More Than One Ton of Removes More Than One Ton of Food | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > NNSA's Global Threat Reduction Initiative Removes More ... NNSA's Global Threat Reduction Initiative Removes More Than One Ton of Food Posted By Office of Public Affairs Contributing to DOE/NNSA's efforts to support the Office of Personnel

274

NETL: News Release - DOE Regional Partnerships Find Up To 3.5 Billion Tons  

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

7, 2007 7, 2007 DOE Regional Partnerships Find More Than 3,500 Billion Tons of Possible CO2 Storage Capacity Atlas Details Stationary Sources and Geologic Reservoirs in U.S. and Canada WASHINGTON, DC - The Department of Energy's Regional Carbon Sequestration Partnerships have identified the powerplant and other stationary sources of more than 3.8 billion tons a year of the greenhouse gas CO2 in the United States and Canada and companion candidate storage capacity for more than 3,500 billion tons. The results are detailed in the new Carbon Sequestration Atlas of the United States and Canada which became available online today. MORE INFO Link to NETL's Carbon Sequestration Atlas web page Link to the Interactive Carbon Sequestration Atlas Learn more about DOE's Regional Carbon Sequestration Partnership program

275

CHANGING THE LANDSCAPE--LOW-TECH SOLUTIONS TO THE PADUCAH SCRAP METAL REMOVAL PROJECT ARE PROVIDING SAFE, COST-EFFECTIVE REMEDIATION OF CONTAMINATED SCRAP YARDS  

SciTech Connect

Between 1974 and 1983, contaminated equipment was removed from the Paducah Gaseous Diffusion Plant (PGDP) process buildings as part of an enrichment process upgrade program. The upgrades consisted of the dismantlement, removal, and on-site storage of contaminated equipment, cell components, and scrap material (e.g., metal) from the cascade facilities. Scrap metal including other materials (e.g., drums, obsolete equipment) not related to this upgrade program have thus far accumulated in nine contiguous radiologically-contaminated and non-contaminated scrap yards covering 1.05E5 m2 (26 acres) located in the northwestern portion of the PGDP. This paper presents the sequencing of field operations and methods used to achieve the safe removal and disposition of over 47,000 tonnes (53,000 tons) of metal and miscellaneous items contained in these yards. The methods of accomplishment consist of mobilization, performing nuclear criticality safety evaluations, moving scrap metal to ground level, inspection and segregation, sampling and characterization, scrap metal sizing, packaging and disposal, and finally demobilization. Preventing the intermingling of characteristically hazardous and non-hazardous wastes promotes waste minimization, allowing for the metal and materials to be segregated into 13 separate waste streams. Low-tech solutions such as using heavy equipment to retrieve, size, and package scrap materials in conjunction with thorough planning that integrates safe work practices, commitment to teamwork, and incorporating lessons learned ensures that field operations will be conducted efficiently and safely.

Watson, Dan; Eyman, Jeff

2003-02-27T23:59:59.000Z

276

Stress distribution under heavy haul transporters  

SciTech Connect

In a previous cited paper, comparisons were made between the relationship of maximum vertical compressive stress generated with depth by various vehicles, including an automobile, a fully-loaded 18-wheel tractor-trailer combination, a test-loaded 12-axle, 96-wheel heavy transporter trailer, and the transporter prime mover, also test loaded. This paper extends the usefulness of those comparisons by adding a 12-axle, 144-wheel heavy transporter trailer. The transporter is a one-and-one-half-wide hydraulic platform trailer test loaded to 110% of the loading from a Westinghouse steam generator. The total weight on the transporter trailer tires is just over 675 tons. This trailer will be used in an upcoming steam generator replacement project. In addition to examining the distribution of maximum vertical stress with depth, the paper looks at the variation of loading beneath the maximum loaded axle of the transporter at different depths.

Davie, J.R.; Senapathy, H. [Bechtel Power Corp., Gaithersburg, MD (United States)

1999-11-01T23:59:59.000Z

277

Engineering of microorganisms towards recovery of rare metal ions  

Science Journals Connector (OSTI)

The bioadsorption of metal ions using microorganisms is an attractive technology for the recovery of rare metal ions as well as removal of toxic heavy metal ions from aqueous solution. In initial attempts, microo...

Kouichi Kuroda; Mitsuyoshi Ueda

2010-06-01T23:59:59.000Z

278

International Recycling of LLW Metals  

SciTech Connect

Melting of radioactive scrap metal has been successfully practiced for more than 15 years, with approximately 60,000 tons of steel being processed into beneficial reuse applications. This process has converted radioactive scrap metal at a licensed facility into useful products such as shield blocks, security barriers and shield containers. These products are used within the nuclear industry, such as nuclear power plants, waste disposal facilities and high-energy physics research facilities. Recycling provides the following benefits by comparison with direct disposal: - Preserving metal resources. - Conserving valuable Low Level Waste (LLW) disposal site resources, thereby extending disposal site life. - Reducing the cost of metal products to end users by using materials less expensive than virgin metals. This paper outlines international metal recycling practices implemented at EnergySolutions' Bear Creek Facility in Oak Ridge, Tennessee. (authors)

Eshleman, T.; Jansen, J. [EnergySolutions (United States); Shinya, Sawada [KEK - High Energy Accelerator Research Organization (Japan)

2008-07-01T23:59:59.000Z

279

E-Print Network 3.0 - aluminum-fly ash metal Sample Search Results  

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

extent, bottom ash, contain elevated amounts of heavy metals, and fly ash... . The dioxinsfurans on ash then don't seem to create an environmental problem. Heavy metals are...

280

Photo of the Week: An Incredible Journey -- Transporting a 50-ton Magnet |  

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

An Incredible Journey -- Transporting a 50-ton An Incredible Journey -- Transporting a 50-ton Magnet Photo of the Week: An Incredible Journey -- Transporting a 50-ton Magnet July 11, 2013 - 4:38pm Addthis The Muon g-2 (pronounced gee minus two) is an experiment that will use the Fermilab accelerator complex to create an intense beam of muons -- a type of subatomic particle -- traveling at the speed of light. The experiment is picking up after a previous muon experiment at Brookhaven National Laboratory, which concluded in 2001. In this photo, the massive electromagnet is beginning its 3,200-mile journey from the woods of Long Island to the plains near Chicago, where scientists at Fermilab will refill its storage ring with muons created at Fermilabñ€™s Antiproton Source. The 50-foot-diameter ring is made of steel, aluminum and superconducting wire. It will travel down the East Coast, around the tip of Florida, and up the Mississippi River to Fermilab in Illinois. Transporting the 50-ton device by truck requires meticulous precision -- just a tilt or a twist of a few degrees could leave the internal wiring irreparably damaged.

Note: This page contains sample records for the topic "tons heavy metal" 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

Engineering safety evaluation for 22 ton steel disposal box lifting bail design  

SciTech Connect

The objective of this analysis is to design and analyze the lifting bail of the 22 Ton Steel Waste Disposal Box (SWDB). The new design takes the original lifting bail and adds a hinge allowing the top portion of the bail to fold over towards the lid.

BOEHNKE, W.M.

1999-11-23T23:59:59.000Z

282

2 million tons per year: A performing biofuels supply chain for  

E-Print Network (OSTI)

1 2 million tons per year: A performing biofuels supply chain for EU aviation NOTE It is understood that in the context of this text the term "biofuel(s) use in aviation" categorically implies "sustainably produced biofuel(s)" according to the EU legislation. June 2011 #12;2 This technical paper was drafted

283

Fertilizer and Nitrogen 1 billion tons of artificial nitrogen fertilizer used annually.  

E-Print Network (OSTI)

Fertilizer and Nitrogen 1 billion tons of artificial nitrogen fertilizer used annually. Emissions. (fertilizers that use nitric acid or ammonium bicarbonate result in emissions of nitrogen oxides, nitrous oxide, ammonia and carbon dioxide into the atmosphere.) ~Indirect: Phosphorus in excess causes eutrophication

Toohey, Darin W.

284

Energy Department Project Captures and Stores One Million Metric Tons of Carbon  

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

As part of President Obama’s all-of-the-above energy strategy, the Department of Energy announced today that its Illinois Basin-Decatur Project successfully captured and stored one million metric tons of carbon dioxide (CO2) and injected it into a deep saline formation.

285

TITANIUM AND TITANIUM DIOXIDE1 (Data in metric tons, unless otherwise noted)  

E-Print Network (OSTI)

Stockpile Center continued to solicit offers for the sale of titanium sponge held in the Government-grade sponge. For fiscal year 2001, 4,540 tons of titanium sponge is being offered for sale. Stockpile Status for disposal FY 2000 FY 2000 Titanium sponge 19,100 3,390 19,100 4,540 4,240 Ev

286

Energy Department Project Captures and Stores more than One Million Metric Tons of CO2  

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

WASHINGTON – Following the one year mark since the release of the President’s Climate Action Plan, the U.S. Department of Energy (DOE) - in partnership with Air Products and Chemicals Inc. – today announced a major milestone, successfully capturing more than one million metric tons of carbon dioxide (CO2) at the hydrogen-production facility in Port Arthur, Texas.

287

E-Print Network 3.0 - affecting metal concentration Sample Search...  

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

Surface Precipitation of Hydrolyzable Metal Ions on Oxide Surfaces S. E. Fendorf Heavy metal... retention on solid surfaces is a primary determinant in affecting the environmental...

288

E-Print Network 3.0 - aggregate structures metal Sample Search...  

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

J. Camobreco... 161:740-750 1996 ABSTRACT Soils accumulate heavy metals when sewage sludge is applied to land... -borne metals could represent if mobilized, many studies have...

289

(Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: U.S. mine production of copper in 2012 increased by 4% to about 1.15 million tons,  

E-Print Network (OSTI)

48 COPPER (Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: U.S. mine production of copper in 2012 increased by 4% to about 1.15 million tons of production--accounted for more than 99% of domestic mine production; copper also was recovered in Alaska

290

(Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: U.S. mine production of copper in 2011 increased slightly to about 1.1 million tons  

E-Print Network (OSTI)

48 COPPER (Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: U.S. mine production of copper in 2011 increased slightly to about 1.1 million tons order of production--accounted for more than 99% of domestic mine production; copper also was recovered

291

(Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: U.S. mine production of copper in 2013 increased by 4% to about 1.22 million tons,  

E-Print Network (OSTI)

48 COPPER (Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: U.S. mine production of copper in 2013 increased by 4% to about 1.22 million tons of production--accounted for more than 99% of domestic mine production; copper also was recovered in Idaho

292

Upgrading platform using alkali metals  

DOE Patents (OSTI)

A process for removing sulfur, nitrogen or metals from an oil feedstock (such as heavy oil, bitumen, shale oil, etc.) The method involves reacting the oil feedstock with an alkali metal and a radical capping substance. The alkali metal reacts with the metal, sulfur or nitrogen content to form one or more inorganic products and the radical capping substance reacts with the carbon and hydrogen content to form a hydrocarbon phase. The inorganic products may then be separated out from the hydrocarbon phase.

Gordon, John Howard

2014-09-09T23:59:59.000Z

293

Identification of Molecular and Cellular Responses of Desulfovibrio vulgaris Biofilms under Culture Conditions Relevant to Field Conditions for Bioreduction of Heavy Metals  

SciTech Connect

Desulfovibrio vulgaris Hildenborough is a Gramnegative sulfate-reducing bacterium (SRB), and the physiology of SRBs can impact many anaerobic environments including radionuclide waste sites, oil reservoirs and metal pipelines. In an attempt to understand D. vulgaris as a population that can adhere to surfaces, D. vulgaris cultures were grown in a defined medium and analysed for carbohydrate production, motility and biofilm formation. Desulfovibrio vulgaris wild-type cells had increasing amounts of carbohydrate into stationary phase and approximately half of the carbohydrate remained internal. In comparison, a mutant that lacked the 200 kb megaplasmid, strain DMP, produced less carbohydrate and the majority of carbohydrate remained internal of the cell proper. To assess the possibility of carbohydrate re-allocation, biofilm formation was investigated. Wild-type cells produced approximately threefold more biofilm on glass slides compared with DMP; however, wild-type biofilm did not contain significant levels of exopolysaccharide. In addition, stains specific for extracellular carbohydrate did not reveal polysaccharide material within the biofilm. Desulfovibrio vulgaris wild-type biofilms contained long filaments as observed with scanning electron microscopy (SEM), and the biofilm-deficient DMP strain was also deficient in motility. Biofilms grown directly on silica oxide transmission electron microscopy (TEM) grids did not contain significant levels of an exopolysaccharide matrix when viewed with TEM and SEM, and samples stained with ammonium molybdate also showed long filaments that resembled flagella. Biofilms subjected to protease treatments were degraded, and different proteases that were added at the time of inoculation inhibited biofilm formation. The data indicated that D. vulgaris did not produce an extensive exopolysaccharide matrix, used protein filaments to form biofilm between cells and silica oxide surfaces, and the filaments appeared to be flagella. It is likely that D. vulgaris used flagella for more than a means of locomotion to a surface, but also used flagella, or modified flagella, to establish and/or maintain biofilm structure.

Fields, Matthew W [Montana State University

2007-10-01T23:59:59.000Z

294

Changes in species assemblages and diets of Collembola along a gradient of metal pollution  

E-Print Network (OSTI)

pollution. Keywords: Collembolan communities, Heavy metals, Gut contents 1. Introduction * Corresponding.1016/S0929-1393(02)00134-8 #12;2 Pollution by heavy metals, due to smelter, mining or agricultural the hypothesis that soil animal communities sampled along a gradient of heavy metal pollution show a) shifts

Paris-Sud XI, Université de

295

Humus forms and metal pollution in soil S. GILLET & J.F. PONGE  

E-Print Network (OSTI)

pollution by heavy metals. We have studied a poplar plantation downwind of an active zinc smelter. Three debris to assess the impact of heavy metal pollution on the humus forms and on soil faunal activity. We. Introduction Today, in northern France, numerous sites are polluted by heavy metals (Balabane et al., 1999

Paris-Sud XI, Université de

296

ORIGINAL ARTICLE The study of metal contamination in urban topsoils of Mexico City  

E-Print Network (OSTI)

- politan area of Mexico City. Keywords Heavy metals Á GIS Á Mexico City Á Urban topsoils Á Pollution Á to environmental quality. Typical pollutants of urban environments are heavy metals which are emitted distribution of heavy metals (Pb, Cu, Zn, Ba, Co, Cr, Ni and V) in the urban environments of Mexico City using

Short, Daniel

297

Titanium metal: extraction to application  

SciTech Connect

In 1998, approximately 57,000 tons of titanium metal was consumed in the form of mill products (1). Only about 5% of the 4 million tons of titanium minerals consumed each year is used to produce titanium metal, with the remainder primarily used to produce titanium dioxide pigment. Titanium metal production is primarily based on the direct chlorination of rutile to produce titanium tetrachloride, which is then reduced to metal using the Kroll magnesium reduction process. The use of titanium is tied to its high strength-to-weight ratio and corrosion resistance. Aerospace is the largest application for titanium. In this paper, we discuss all aspects of the titanium industry from ore deposits through extraction to present and future applications. The methods of both primary (mining of ore, extraction, and purification) and secondary (forming and machining) operations will be analyzed. The chemical and physical properties of titanium metal will be briefly examined. Present and future applications for titanium will be discussed. Finally, the economics of titanium metal production also are analyzed as well as the advantages and disadvantages of various alternative extraction methods.

Gambogi, Joseph (USGS, Reston, VA); Gerdemann, Stephen J.

2002-09-01T23:59:59.000Z

298

U.S. Manufacturers Save $1 Billion, 11 Million Tons of CO2 through Energy  

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

You are here You are here Home » U.S. Manufacturers Save $1 Billion, 11 Million Tons of CO2 through Energy Efficiency Investments U.S. Manufacturers Save $1 Billion, 11 Million Tons of CO2 through Energy Efficiency Investments September 25, 2013 - 12:00pm Addthis News Media Contact (202) 586-4940 WASHINGTON - Underscoring the Obama Administration's efforts to double energy productivity by 2030 and help businesses save money and energy, the Energy Department today recognized more than 120 manufacturers that are making smart investments to save on energy costs, cut greenhouse gas emissions and improve their bottom lines. Through the Department's Better Buildings, Better Plants Program (Better Plants), over 1,750 plants across the United States have saved about $1 billion in energy costs and

299

Cleanup of 77 Waste Sites Meets Two TPA Milestones: 1.2 million tons of  

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

Cleanup of 77 Waste Sites Meets Two TPA Milestones: 1.2 million Cleanup of 77 Waste Sites Meets Two TPA Milestones: 1.2 million tons of soil and debris disposed of from D, H Reactor Areas Cleanup of 77 Waste Sites Meets Two TPA Milestones: 1.2 million tons of soil and debris disposed of from D, H Reactor Areas January 11, 2012 - 12:00pm Addthis Media Contacts Cameron Hardy, DOE (509) 376-5365, Cameron.Hardy@rl.doe.gov Dieter Bohrmann, Ecology (509) 372-7954, Dieter.Bohrmann@ecy.wa.gov Emerald Laija, EPA (509) 376-4919, Laija.Emerald@epamail.epa.gov RICHLAND, WASH. - Department of Energy (DOE) contractor, Washington Closure Hanford, recently cleaned up 77 waste sites at Hanford to meet two Tri-Party Agreement (TPA) milestones before the end of 2011. The waste sites were located in the D and H Reactor Areas at Hanford along

300

NETL: News Release - DOE-Sponsored Mississippi Project Hits 1-Million-Ton  

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

5, 2009 5, 2009 DOE-Sponsored Mississippi Project Hits 1-Million-Ton Milestone for Injected CO2 Project Helping Further CCS Technology and Meeting G-8 Goals for Deployment Washington, D.C. -A large-scale carbon dioxide (CO2) storage project in Mississippi has become the fifth worldwide to reach the important milestone of more than 1 million tons injected. As a result, it is helping to both further carbon capture and storage (CCS) as a mitigation strategy for global climate change and move forward G-8 recommendations for launching 20 projects of this type internationally by 2010. MORE INFO Learn more about DOE's Regional Carbon Sequestration Partnership Program Link to SECARB web site The project, sponsored by the U.S. Department of Energy's (DOE) Office of Fossil Energy (FE), is located at the Cranfield site in Southwestern

Note: This page contains sample records for the topic "tons heavy metal" 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

Desulfurization of heavy oil  

Science Journals Connector (OSTI)

Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil. The desulfurization methods includin...

Rashad Javadli; Arno de Klerk

2012-03-01T23:59:59.000Z

302

Colloids and Surfaces A: Physicochem. Eng. Aspects 281 (2006) 194201 Multi-metal biosorption in a fixed-bed flow-through column  

E-Print Network (OSTI)

-biosorbent biomass of Sargassum fluitans brown seaweed biomass is capable of effectively removing toxic heavy metals of toxic heavy metals from industrial metal-bearingeffluentshasbeenstudiedforsometime[1,19,28]. Biosorption is a process employing dead biomass to sorb heavy metals from aqueous solutions [18]. Low costs and relatively

Volesky, Bohumil

303

The effects of metal and nutrient addition on Ribbed Mussels, Geukensia demissa, in the Great Sippewissett Salt Marsh and Eel Pond  

E-Print Network (OSTI)

the potential effects of nutrient loading and heavy metal pollution on salt marshes, researchers established highly contaminated with heavy metals. Nutrient additions did not promote or deter the health of mussels Marsh plots, perhaps a result of metal contamination. Keywords Salt marsh, nutrients, heavy metals

Vallino, Joseph J.

304

(Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2004, clay and shale production was reported in 41 States. About 240  

E-Print Network (OSTI)

million tons. The 49 million tons probably includes crude clay production tonnages which contain E Recycling: Insignificant. Import Sources (2000-03): Brazil, 68%; Mexico, 9%; United Kingdom, 8 probably includes crude clay production which contains significant water content. Compensating

305

Trace metal concentration and fish size: Variation among fish species in a Mediterranean river  

E-Print Network (OSTI)

29 April 2014 Accepted 12 May 2014 Keywords: Bioaccumulation Heavy metals Llobregat River species in an Iberian river with moderate metal pollution. Al, Fe and Zn were the most abundant metals trace elements (Bervoets and Blust, 2003; Noël et al., 2013). Heavy metals in fish represent a potential

GarcĂ­a-Berthou, Emili

306

Recrystallization of heavy metals after cold deformation  

SciTech Connect

Rapid heating experiments, of the order of tens of seconds, were performed on a 90%W-7%Ni-3%Fe alloy, which was cold worked by rotary swaging to 50% reduction in diameter. It was found that even very short periods of heating brings to the separation of the elongated tungsten grains into small round ones, therefore refining the microstructure. The process involves melting of the matrix and its penetration into the tungsten grains. During cooling, very small, new grains are precipitated. It is suggested that grain refining is achieved by penetration of the molten matrix into the solid tungsten grains through subgrain boundaries.

Goren-Muginstein, G.R.; Rosen, A. [Israel Inst. of Tech., Haifa (Israel). Dept. of Materials Engineering

1996-06-01T23:59:59.000Z

307

Functional Mesoporous Metal-Organic Frameworks for the Capture...  

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

Functional Mesoporous Metal-Organic Frameworks for the Capture of Heavy Metal Ions and Size-Selective Catalysis Previous Next List Qian-Rong Fang, Da-Qian Yuan, Julian Sculley,...

308

E-Print Network 3.0 - active site metal Sample Search Results  

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

Summary: collected from a reference site and a site with a long-term history of heavy-metal pollution. Direct... the metal-polluted site were more tolerant of metals but less...

309

Yeast Biosorption and Recycling of Metal Ions by Cell Surface Engineering  

Science Journals Connector (OSTI)

Metal biosorption by microorganisms contributes to the removal of toxic heavy metal ions and collection of metal resources from waste ... . Cell surface biosorption enhanced by cell surface engineering is a uniqu...

Kouichi Kuroda; Mitsuyoshi Ueda

2011-01-01T23:59:59.000Z

310

PLATINUM-GROUP METALS (Platinum, palladium, rhodium, ruthenium, iridium, osmium)  

E-Print Network (OSTI)

are also used in other air pollution abatement processes to remove organic vapors, odors, or carbon platinum-group metals (PGM) mine. The mine, located near Nye, MT, processed more than 400,000 metric tons and biomedical devices. Salient Statistics--United States: 1995 1996 1997 1998 1999e Mine production:1 Platinum 1

311

PLATINUM-GROUP METALS (Platinum, palladium, rhodium, ruthenium, iridium, osmium)  

E-Print Network (OSTI)

automobile exhaust emissions. Oxidation catalysts are also used in many air pollution abatement processes platinum-group metals (PGM) mine. The mine, located near Nye, MT, processed about 430,000 metric tons--United States: 1994 1995 1996 1997 1998e Mine production: Platinum 1,960 1,590 1,840 2,610 3,5001 Palladium 6

312

PLATINUM-GROUP METALS (Platinum, palladium, rhodium, ruthenium, iridium, osmium)  

E-Print Network (OSTI)

automobile exhaust emissions. Oxidation catalysts are also used in many air pollution abatement processes platinum-group metals (PGM) mine. The mine, located near Nye, MT, processed about 350,000 metric tons--United States: 1993 1994 1995 1996 1997e Mine production: Platinum 2,050 1,960 1,590 1,840 2,5002 Palladium 6

313

Exploiting heavy oil reserves  

E-Print Network (OSTI)

North Sea investment potential Exploiting heavy oil reserves Beneath the waves in 3D Aberdeen the potential of heavy oil 8/9 Taking the legal lessons learned in the north Sea to a global audience 10 potential Exploiting heavy oil reserves Aberdeen: A community of science AT WORK FOR THE ENERGY SECTOR ISSUE

Levi, Ran

314

Questions and Answers - How many atoms would it take to create a ton?  

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

there in the world? there in the world? Previous Question (How many atoms are there in the world?) Questions and Answers Main Index Next Question (Could you please explain density?) Could you please explain density? How many atoms would it take to create a ton? There's a lot more to this question than first appears. There are many types of atoms and each of them has its own mass, so the answer varies depending on which atom you are talking about. Since even a tiny bit of matter has many atoms, it has become customary to use the unit "mole" to signify a standard number of atoms, namely, it is Avogadro's number which (almost) equals 6*1023, or 600,000 billion billon. If you look up the periodic table of elements, one of the numbers usually listed is the atomic mass which is the mass (in grams) of one mole of those atoms. Let's use

315

Cracked lifting lug welds on ten-ton UF{sub 6} cylinders  

SciTech Connect

Ten-ton, Type 48X, UF{sub 6} cylinders are used at the Portsmouth Gaseous Diffusion Plant to withdraw enriched uranium hexafluoride from the cascade, transfer enriched uranium hexafluoride to customer cylinders, and feed enriched product to the cascade. To accomplish these activities, the cylinders are lifted by cranes and straddle carriers which engage the cylinder lifting lugs. In August of 1988, weld cracks on two lifting lugs were discovered during preparation to lift a cylinder. The cylinder was rejected and tagged out, and an investigating committee formed to determine the cause of cracking and recommend remedial actions. Further investigation revealed the problem may be general to this class of cylinder in this use cycle. This paper discusses the actions taken at the Portsmouth site to deal with the cracked lifting lug weld problem. The actions include inspection activities, interim corrective actions, metallurgical evaluation of cracked welds, weld repairs, and current monitoring/inspection program.

Dorning, R.E. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States)

1991-12-31T23:59:59.000Z

316

Dynamic performance testing of prototype 3 ton air-cooled carrier absorption chiller  

SciTech Connect

The performance of a prototype 3 ton cooling capacity air-cooled lithium bromide/water absorption chiller was tested using an absorption chiller test facility which was modified to expand its testing capabilities to include air-cooled chillers in addition to water-cooled chillers. Temperatures of the three externally supplied fluid loops: hot water, chilled water, and cooling air, were varied in order to determine the effects this would have on the two principal measures of chiller performance: cooling capacity and thermal coefficient of performance (COP). A number of interrelated factors were identified as contributing to less than expected performance. For comparison, experimental correlations of other investigators for this and other similar absorption chillers are presented. These have been plotted as both contour and three-dimensional performance maps in order to more clearly show the functional dependence of the chiller performance on the fluid loop temperatures.

Borst, R.R.; Wood, B.D.

1985-05-01T23:59:59.000Z

317

The ArDM - a ton-scale liquid argon experiment for direct Dark Matter Detection  

SciTech Connect

The ArDM is a ton-scale double phase detector for the direct search of the Weakly Interacting Massive Particle (WIMPs) as Dark Matter candidates. The detector is based on a liquid Argon (LAr) target. The present goal is to assemble, fully characterize the detector on the surface and then operate it at an underground facility. The scintillation light and ionization charge produced by recoiling nuclei in WIMP-Ar collision can be measured independently. The discrimination of the WIMP induced nuclear recoils from the electron/gamma background is done using the pulse discrimination technique and the ratio between the produced light and charge. The experiment and the last results from the detector commissioning are presented.

Otyugova, Polina [Physik-Institut der Universitaet Zuerich, Winterthurerstrasse 190, CH-8057 Zuerich (Switzerland)

2010-06-23T23:59:59.000Z

318

Structural Basis for Metal Binding Specificity: the N-terminal Cadmium Binding Domain of the  

E-Print Network (OSTI)

In bacteria, P1-type ATPases are responsible for resistance to di- and monovalent toxic heavy metals by taking years and no common mechanism for resistance toward toxic heavy metals such as Cd(II), Zn(II), HgStructural Basis for Metal Binding Specificity: the N-terminal Cadmium Binding Domain of the P1

Scott, Robert A.

319

(Data in thousand metric tons of copper content, unless otherwise noted) Domestic Production and Use: Domestic mine production in 2003 declined to 1.12 million tons and was valued at  

E-Print Network (OSTI)

54 COPPER (Data in thousand metric tons of copper content, unless otherwise noted) Domestic% of domestic production; copper was also recovered at mines in three other States. Although copper-electrowinning facilities operated during the year. Refined copper and direct melt scrap were consumed at about 30 brass

320

(Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: Domestic mine production in 2007 declined nominally to 1.19 million tons, but its  

E-Print Network (OSTI)

54 COPPER (Data in thousand metric tons of copper content unless otherwise noted) Domestic--Arizona, Utah, New Mexico, Nevada, and Montana--accounted for 99% of domestic production; copper was also recovered at mines in two other States. Although copper was recovered at 26 mines operating in the United

Note: This page contains sample records for the topic "tons heavy metal" 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

(Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: Domestic mine production in 2009 declined by about 9% to 1.2 million tons and its  

E-Print Network (OSTI)

48 COPPER (Data in thousand metric tons of copper content unless otherwise noted) Domestic--Arizona, Utah, New Mexico, Nevada, and Montana--accounted for more than 99% of domestic production; copper also was recovered at mines in Idaho and Missouri. Although copper was recovered at 29 mines operating in the United

322

ZIRCONIUM AND HAFNIUM (Data in metric tons of zirconium oxide (ZrO ) equivalent, unless otherwise noted)2  

E-Print Network (OSTI)

and concentrates: Australia, 51%; South Africa, 48%; and other, 1%. Zirconium, wrought, unwrought, waste and scrap: France, 69%; Australia, 21%; Germany, 8%; and United Kingdom, 2%. Tariff: Item Number Normal Trade, the U.S. Department of Energy (DOE) held over 500 tons of zirconium in various forms. DOE also

323

HEAVY-DUTYDIEGRINDERS EXTRAROBUSTERECTIFIEUSESPOURMATRICES  

E-Print Network (OSTI)

HEAVY-DUTYDIEGRINDERS EXTRAROBUSTERECTIFIEUSESPOURMATRICES HEAVYDUTYRECTIFICADORDEMATRICES OPERATOR tool. Keep cord away from heat, oil, sharp edges, or moving parts. Damaged or entangled cords increase

Kleinfeld, David

324

Bioconversion of Heavy oil.  

E-Print Network (OSTI)

??70 % of world?s oil reservoirs consist of heavy oil, and as the supply of conventional oil decreases, researchers are searching for new technologies to… (more)

Steinbakk, Sandra

2011-01-01T23:59:59.000Z

325

Stabilization of Electrocatalytic Metal Nanoparticles at Metal...  

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

Electrocatalytic Metal Nanoparticles at Metal-Metal Oxide-Graphene Triple Junction Points. Stabilization of Electrocatalytic Metal Nanoparticles at Metal-Metal Oxide-Graphene...

326

High temperature experiments on a 4 tons UF6 container TENERIFE program  

SciTech Connect

The paper presents an experimental program (called TENERIFE) whose aim is to investigate the behaviour of a cylinder containing UF{sub 6} when exposed to a high temperature fire for model validation. Taking into account the experiments performed in the past, the modelization needs further information in order to be able to predict the behaviour of a real size cylinder when engulfed in a 800{degrees}C fire, as specified in the regulation. The main unknowns are related to (1) the UF{sub 6} behaviour beyond the critical point, (2) the relationship between temperature field and internal pressure and (3) the equivalent conductivity of the solid UF{sub 6}. In order to investigate these phenomena in a representative way it is foreseen to perform experiments with a cylinder of real diameter, but reduced length, containing 4 tons of UF{sub 6}. This cylinder will be placed in an electrically heated furnace. A confinement vessel prevents any dispersion of UF{sub 6}. The heat flux delivered by the furnace will be calibrated by specific tests. The cylinder will be changed for each test.

Casselman, C.; Duret, B.; Seiler, J.M.; Ringot, C.; Warniez, P.

1991-12-31T23:59:59.000Z

327

1000–ton testing machine for cyclic fatigue tests of materials at liquid nitrogen temperatures  

SciTech Connect

One of the main tasks of superconductive magnets R and D is to determine the mechanical and fatigue properties of structural materials and the critical design elements in the cryogenic temperature range. This paper describes a new facility built based on the industrial 1000-ton (10 MN) testing machine Schenk PC10.0S. Special equipment was developed to provide the mechanical and cyclic tensile fatigue tests of large-scale samples at the liquid nitrogen temperature and in a given load range. The main feature of the developed testing machine is the cryostat, in which the device converting a standard compression force of the testing machine to the tensile force affected at the test object is placed. The control system provides the remote control of the test and obtaining, processing and presentation of test data. As an example of the testing machine operation the test program and test results of the cyclic tensile fatigue tests of fullscale helium inlet sample of the PF1 coil ITER are presented.

Khitruk, A. A.; Klimchenko, Yu. A.; Kovalchuk, O. A.; Marushin, E. L.; Mednikov, A. A.; Nasluzov, S. N.; Privalova, E. K.; Rodin, I. Yu.; Stepanov, D. B.; Sukhanova, M. V. [The D.V. Efremov Scientific Research Institute of Electrophysical Apparatus (NIIEFA), 3 Doroga na Metallostroy, Metallostroy, Saint Petersburg 196641 (Russian Federation)

2014-01-29T23:59:59.000Z

328

E-Print Network 3.0 - albumin metal interaction Sample Search...  

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

STABILIZATION PONDS... Sheva, Israel (RecewedMay 1986) Abstract--The distribution of toxic heavy metals ... Source: Ben-Gurion University, Department of Electrical and Computer...

329

Removal of dissolved metals by the Imperial and Brawley Constructed Wetlands, Imperial Valley, C.A.  

E-Print Network (OSTI)

??The main objective of this study was to examine the effectiveness of heavy metal removal by two pilot constructed wetlands in Imperial Valley, California. The… (more)

Bucher, Tiffany N.

2013-01-01T23:59:59.000Z

330

E-Print Network 3.0 - aastat metal travel Sample Search Results  

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

smell By Tina Hesman | St. Louis Post-Dispatch Posted March 2, 2003 ST. LOUIS -- Heavy metal Source: Suslick, Kenneth S. - Department of Chemistry, University of Illinois at...

331

E-Print Network 3.0 - alkaline-earth metal cations Sample Search...  

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

K. (2002): A novel group of alkaline earth metal amides: synthesis... ): Not just heavy "Grignards": Recent advances in the organometallic chemistry of the alkaline earth...

332

E-Print Network 3.0 - anthropogenic trace metal Sample Search...  

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

Collection: Geosciences 57 Heavy metal contamination in highway soils. Comparison of Corpus Christi, Texas and Cincinnati, Ohio shows organic matter is key to mobility...

333

SUPRI heavy oil research program  

SciTech Connect

The 14th Annual Report of the SUPRI Heavy Oil Research Program includes discussion of the following topics: (1) A Study of End Effects in Displacement Experiments; (2) Cat Scan Status Report; (3) Modifying In-situ Combustion with Metallic Additives; (4) Kinetics of Combustion; (5) Study of Residual Oil Saturation for Steam Injection and Fuel Concentration for In-Situ Combustion; (6) Analysis of Transient Foam Flow in 1-D Porous Media with Computed Tomography; (7) Steam-Foam Studies in the Presence of Residual Oil; (8) Microvisualization of Foam Flow in a Porous Medium; (9) Three- Dimensional Laboratory Steam Injection Model; (10) Saturation Evaluation Following Water Flooding; (11) Numerical Simulation of Well-to-Well Tracer Flow Test with Nonunity Mobility Ratio.

Aziz, K.; Ramey, H.J. Jr.; Castanier, L.M.

1991-12-01T23:59:59.000Z

334

Quarkonia and heavy flavors at the LHC  

E-Print Network (OSTI)

Perspectives for quarkonia and heavy flavors measurements in heavy ion collisions at LHC are reviewed

P. Crochet

2005-03-14T23:59:59.000Z

335

Biosorption of anionic metal complexes Hui Niu and Bohumil Volesky*  

E-Print Network (OSTI)

containing toxic heavy metals, often in anionic complex forms such as anionic chromate (CrO4 2- ), vanadate1 Biosorption of anionic metal complexes Hui Niu and Bohumil Volesky* http Street, MONTREAL, Canada H3A 2B2 *corresponding author Anionic metal complexes, are very effectively

Volesky, Bohumil

336

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)

337

E-Print Network 3.0 - airbone trace metals Sample Search Results  

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

and Loss of Heavy Metals from Experimental Salt Marsh Plots Summary: L of 12 M trace metal grade hydrochloric acid (HCl) and reheated the samples to 65-80 C in a water bath......

338

Methodology for Estimating ton-Miles of Goods Movements for U.S. Freight Mulitimodal Network System  

SciTech Connect

Ton-miles is a commonly used measure of freight transportation output. Estimation of ton-miles in the U.S. transportation system requires freight flow data at disaggregated level (either by link flow, path flows or origin-destination flows between small geographic areas). However, the sheer magnitude of the freight data system as well as industrial confidentiality concerns in Census survey, limit the freight data which is made available to the public. Through the years, the Center for Transportation Analysis (CTA) of the Oak Ridge National Laboratory (ORNL) has been working in the development of comprehensive national and regional freight databases and network flow models. One of the main products of this effort is the Freight Analysis Framework (FAF), a public database released by the ORNL. FAF provides to the general public a multidimensional matrix of freight flows (weight and dollar value) on the U.S. transportation system between states, major metropolitan areas, and remainder of states. Recently, the CTA research team has developed a methodology to estimate ton-miles by mode of transportation between the 2007 FAF regions. This paper describes the data disaggregation methodology. The method relies on the estimation of disaggregation factors that are related to measures of production, attractiveness and average shipments distances by mode service. Production and attractiveness of counties are captured by the total employment payroll. Likely mileages for shipments between counties are calculated by using a geographic database, i.e. the CTA multimodal network system. Results of validation experiments demonstrate the validity of the method. Moreover, 2007 FAF ton-miles estimates are consistent with the major freight data programs for rail and water movements.

Oliveira Neto, Francisco Moraes [ORNL] [ORNL; Chin, Shih-Miao [ORNL] [ORNL; Hwang, Ho-Ling [ORNL] [ORNL

2013-01-01T23:59:59.000Z

339

Evaluation of environmental pollution and possible management options of heavy oil fly ash  

Science Journals Connector (OSTI)

Due to the presence of toxic metals, dumping of heavy oil fly ash (HOFA) is causing ever-growing environmental problem including the pollution of air, water and soil. The present study investigates the possibl...

Abdullah Mofarrah; Tahir Husain

2013-01-01T23:59:59.000Z

340

Heavy Hybrid mesons Masses  

E-Print Network (OSTI)

We estimate the ground state masses of the heavy hybrid mesons using a phenomenological QCD-type potential. 0^{- -},1^{- -},0^{- +},1^{- +} and 0^{+ -} J^{PC} states are considered.

F. Iddir; L. Semlala

2006-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

HEAVY ION INERTIAL FUSION  

E-Print Network (OSTI)

Accelerators as Drivers for Inertially Confined Fusion, W.B.LBL-9332/SLAC-22l (1979) Fusion Driven by Heavy Ion Beams,OF CALIFORNIA f Accelerator & Fusion Research Division

Keefe, D.

2008-01-01T23:59:59.000Z

342

Studies of a three-stage dark matter and neutrino observatory based on multi-ton combinations of liquid xenon and liquid argon detectors  

E-Print Network (OSTI)

We study a three stage dark matter and neutrino observatory based on multi-ton two-phase liquid Xe and Ar detectors with sufficiently low backgrounds to be sensitive to WIMP dark matter interaction cross sections down to 10E-47 cm^2, and to provide both identification and two independent measurements of the WIMP mass through the use of the two target elements in a 5:1 mass ratio, giving an expected similarity of event numbers. The same detection systems will also allow measurement of the pp solar neutrino spectrum, the neutrino flux and temperature from a Galactic supernova, and neutrinoless double beta decay of 136Xe to the lifetime level of 10E27 - 10E28 y corresponding to the Majorana mass predicted from current neutrino oscillation data. The proposed scheme would be operated in three stages G2, G3, G4, beginning with fiducial masses 1-ton Xe + 5-ton Ar (G2), progressing to 10-ton Xe + 50-ton Ar (G3) then, dependent on results and performance of the latter, expandable to 100-ton Xe + 500-ton Ar (G4). This ...

Arisaka, K; Smith, P F; Beltrame, P; Ghag, C; Lung, K; Teymourian, A; Wang, H; Cline, D B

2011-01-01T23:59:59.000Z

343

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Towards Heavy Fermions in Europium Intermetallic Compounds Towards Heavy Fermions in Europium Intermetallic Compounds Print Wednesday, 29 July 2009 00:00 For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische UniversitÀt Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

344

Platinum Metals Rev., 2008, 52, (3), 144-154  

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

Metals Rev., 2008, 52, (3), 144-154 Metals Rev., 2008, 52, (3), 144-154 144 1. Introduction Coal-fired utility boilers are the largest anthro- pogenic emitters of mercury in the United States, accounting for approximately one third of the 150 tons of mercury emitted annually (1, 2). In 2005, the U.S. Environmental Protection Agency (EPA) announced the Clean Air Mercury Rule, to limit mercury emissions from coal-fired utility boilers to 15 tons annually, approximately 30% of 1999 levels, by 2018 (3). At the time of publication (July 2008) this measure is under legal dispute. Of alter- native legislative proposals to regulate mercury along with other pollutants, most would require a 90% mercury reduction, with deadlines for control varying from 2011 to 2015. Mercury exists in three forms in coal-derived flue gas: elemental (Hg

345

Chapter 1 - Refining Heavy Oil and Extra-heavy Oil  

Science Journals Connector (OSTI)

The definitions of heavy oil, extra-heavy oil, and tar sand bitumen are inadequate insofar as the definitions rely upon a single physical property to define a complex feedstock. This chapter presents viable options to the antiquated definitions of the heavy feedstocks (heavy oil, extra-heavy oil, and tar sand bitumen) as well as an introduction to the various aspects of heavy feedstock refining in order for the reader to place each feedstock in the correct context of properties, behavior, and refining needs.

James G. Speight

2013-01-01T23:59:59.000Z

346

Development of an on-site ex-situ unsaturated-flow remediation process for trace metal contaminated soils.  

E-Print Network (OSTI)

??Innovative means and methods were tested to develop an economical, pragmatic and environmentally sustainable soil remediation process for heavy metal contaminated soils. An unsaturated-flow soil… (more)

Andrade, Marc-David

2005-01-01T23:59:59.000Z

347

Photobiont diversity in lichens from metal-rich substrata based on ITS rDNA sequences  

E-Print Network (OSTI)

sensitive partner of lichen symbiosis in metal pollution. For this reason the presence of a metal tolerant photobiont in lichens may be a key factor of ecological success of lichens growing on metal polluted heavy metal content (in localities as well as lichen thalli) and photobiont diversity. Presence

348

(Data in metric tons of lithium content unless otherwise noted) Domestic Production and Use: Chile was the leading lithium chemical producer in the world; Argentina, China, and  

E-Print Network (OSTI)

%; primary aluminum production, 6%; continuous casting, 4%; rubber and thermoplastics, 4%; pharmaceuticals, 294 LITHIUM (Data in metric tons of lithium content unless otherwise noted) Domestic Production resources, reported production and value of production were withheld from publication to avoid disclosing

349

Upgrading of petroleum oil feedstocks using alkali metals and hydrocarbons  

DOE Patents (OSTI)

A method of upgrading an oil feedstock by removing heteroatoms and/or one or more heavy metals from the oil feedstock composition. This method reacts the oil feedstock with an alkali metal and an upgradant hydrocarbon. The alkali metal reacts with a portion of the heteroatoms and/or one or more heavy metals to form an inorganic phase separable from the organic oil feedstock material. The upgradant hydrocarbon bonds to the oil feedstock material and increases the number of carbon atoms in the product. This increase in the number of carbon atoms of the product increases the energy value of the resulting oil feedstock.

Gordon, John Howard

2014-09-09T23:59:59.000Z

350

DOE Science Showcase - Rare Earth Metal Research from DOE Databases |  

Office of Scientific and Technical Information (OSTI)

Rare Earth Metal Research from DOE Databases Rare Earth Metal Research from DOE Databases Information Bridge Energy Citations Database Highlighted documents of Rare Earth Metal research in DOE databases Information Bridge - Corrosion-resistant metal surfaces DOE R&D Project Summaries - Structural and magnetic studies on heavy rare earth metals at high pressures using designer diamonds Energy Citations Database - Intermultiplet transitions in rare-earth metals DOE Green Energy - LaNi.sub.5 is-based metal hydride electrode in Ni-MH rechargeable cells Science.gov - H.R.4866 - Rare Earths Supply-Chain Technology and Resources Transformation Act of 2010 WorldWideScience.org - China produces most of the world's rare earth metals DOepatents - Recycling of rare earth metals from rare earth-transition metal alloy scrap by liquid metal extraction

351

Manufacturers Saving with Lost Foam Metal Casting | Department of Energy  

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

Manufacturers Saving with Lost Foam Metal Casting Manufacturers Saving with Lost Foam Metal Casting Manufacturers Saving with Lost Foam Metal Casting December 18, 2009 - 2:43pm Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy What are the key facts? Metal casting was identified as one of the top 10 energy users in manufacturing. The technology represents a 20- to 25-percent reduction in production costs and uses 7 percent fewer materials than traditional processes. One example of this technology is being used by General Motors to make lightweight engine blocks for the fuel-efficient vehicles they manufacture. A government-funded effort to support development of foam metal casting helped reduce an estimated 9.4 million tons of solid waste between 1994 and 2005, which saved industry an estimated 3 trillion Btu.

352

Metal inks  

DOE Patents (OSTI)

Self-reducing metal inks and systems and methods for producing and using the same are disclosed. In an exemplary embodiment, a method may comprise selecting metal-organic (MO) precursor, selecting a reducing agent, and dissolving the MO precursor and the reducing agent in an organic solvent to produce a metal ink that remains in a liquid phase at room temperature. Metal inks, including self-reducing and fire-through metal inks, are also disclosed, as are various applications of the metal inks.

Ginley, David S; Curtis, Calvin J; Miedaner, Alex; van Hest, Marinus Franciscus Antonius Maria; Kaydanova, Tatiana

2014-02-04T23:59:59.000Z

353

Metal Oxides  

Science Journals Connector (OSTI)

Metal oxides are the class of materials having the widest application in gas sensors. This chapter presents information related to the application of various metal oxides in gas sensors designed on different p...

Ghenadii Korotcenkov

2013-01-01T23:59:59.000Z

354

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische UniversitÀt Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

355

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische UniversitÀt Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

356

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische UniversitÀt Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

357

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische UniversitÀt Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

358

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische UniversitÀt Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

359

Silicone metalization  

DOE Patents (OSTI)

A system for providing metal features on silicone comprising providing a silicone layer on a matrix and providing a metal layer on the silicone layer. An electronic apparatus can be produced by the system. The electronic apparatus comprises a silicone body and metal features on the silicone body that provide an electronic device.

Maghribi, Mariam N. (Livermore, CA); Krulevitch, Peter (Pleasanton, CA); Hamilton, Julie (Tracy, CA)

2006-12-05T23:59:59.000Z

360

Coordination chemistry of two heavy metals: I, Ligand preferences in lead(II) complexation, toward the development of therapeutic agents for lead poisoning: II, Plutonium solubility and speciation relevant to the environment  

SciTech Connect

The coordination chemistry and solution behavior of the toxic ions lead(II) and plutonium(IV, V, VI) have been investigated. The ligand pK{sub a}s and ligand-lead(II) stability constants of one hydroxamic acid and four thiohydroaxamic acids were determined. Solution thermodynamic results indicate that thiohydroxamic acids are more acidic and slightly better lead chelators than hydroxamates, e.g., N-methylthioaceto-hydroxamic acid, pK{sub a} = 5.94, log{beta}{sub 120} = 10.92; acetohydroxamic acid, pK{sub a} = 9.34, log{beta}{sub l20} = 9.52. The syntheses of lead complexes of two bulky hydroxamate ligands are presented. The X-ray crystal structures show the lead hydroxamates are di-bridged dimers with irregular five-coordinate geometry about the metal atom and a stereochemically active lone pair of electrons. Molecular orbital calculations of a lead hydroxamate and a highly symmetric pseudo octahedral lead complex were performed. The thermodynamic stability of plutonium(IV) complexes of the siderophore, desferrioxamine B (DFO), and two octadentate derivatives of DFO were investigated using competition spectrophotometric titrations. The stability constant measured for the plutonium(IV) complex of DFO-methylterephthalamide is log{beta}{sub 110} = 41.7. The solubility limited speciation of {sup 242}Pu as a function of time in near neutral carbonate solution was measured. Individual solutions of plutonium in a single oxidation state were added to individual solutions at pH = 6.0, T = 30.0, 1.93 mM dissolved carbonate, and sampled over intervals up to 150 days. Plutonium solubility was measured, and speciation was investigated using laser photoacoustic spectroscopy and chemical methods.

Neu, M.P. [Lawrence Berkeley Lab., CA (United States)

1993-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

Heavy Fuel Oil Prices for Electricity Generation - EIA  

Gasoline and Diesel Fuel Update (EIA)

Heavy Fuel Oil Prices for Electricity Generation for Selected Countries1 Heavy Fuel Oil Prices for Electricity Generation for Selected Countries1 U.S. Dollars per Metric Ton2 Country 2001 2002 2003 2004 2005 2006 2007 2008 2009 Argentina NA NA NA NA NA NA NA NA NA Australia NA NA NA NA NA NA NA NA NA Austria 83.0 96.4 146.4 153.3 182.2 226.1 220.3 342.3 248.3 Barbados NA NA NA NA NA NA NA NA NA Belgium 155.1 160.4 - - - - - - - - - - - - - - Bolivia NA NA NA NA NA NA NA NA NA Brazil NA NA NA NA NA NA NA NA NA Canada 115.7 117.8 180.4 141.5 198.4 222.4 NA NA NA Chile NA NA NA NA NA NA NA NA NA China NA NA NA NA NA NA NA NA NA Chinese Taipei (Taiwan) NA NA NA NA NA NA NA NA NA Colombia NA NA NA NA NA NA NA NA NA Cuba NA NA NA 183.4 NA NA NA NA NA

362

PHENIX recent heavy flavor results  

E-Print Network (OSTI)

Cold nuclear matter (CNM) effects provide an important baseline for the interpretation of data in heavy ion collisions. Such effects include nuclear shadowing, Cronin effect, and initial patron energy loss, and it is interesting to study the dependence on impact parameter and kinematic region. Heavy quark production is a good measurement to probe the CNM effects particularly on gluons, since heavy quarks are mainly produced via gluon fusions at RHIC energy. The PHENIX experiment has experiment has ability to study the CNM effects by measuring heavy quark production in $d$$+$Au collisions at variety of kinematic ranges. Comparisons of heavy quark production at different rapidities allow us to study modification of gluon density function in the Au nucleus depending on momentum fraction. Furthermore, comparisons to the results from heavy ion collisions (Au$+$Au and Cu$+$Cu) measured by PHENIX provide insight into the role of CNM effects in such collisions. Recent PHENIX results on heavy quark production are discussed.

Sanghoon Lim for the PHENIX collaboration

2014-02-28T23:59:59.000Z

363

Relativistic Heavy Ion Collider  

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

Relativistic Heavy Ion Collider Relativistic Heavy Ion Collider managed for the U.S. Department of Energy by Brookhaven Science Associates, founded by Stony Brook University and Battelle. managed for the U.S. Department of Energy by Brookhaven Science Associates, a company founded by Stony Brook University and Battelle 07/07 Brookhaven National Laboratory Funded by the U.S. Department of Energy, Brookhaven National Laboratory is a multipurpose research institution located on a 5,300-acre site on Long Island, New York. Six Nobel Prize-winning discoveries have been made at Brookhaven Lab. The Laboratory operates large-scale scientific facilities and performs research in physics, chemistry, biology, medicine, applied science, and

364

Characterizing Heavy Ion  

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

Heavy Ion Heavy Ion Reactions in the 1980's Is there Treasure at the end of the Rainbow? & What happens and how do different modes compete? John Schiffer One of the three research areas for ATLAS, as stated in a 1984 document to Congress: Are there some new marvelous symmetries, hidden in resonances in heavier nuclei, beyond 12 C+ 12 C and its immediate vicinity? (s.c. linac work, pre-ATLAS) Other attempts to chase the rainbow 180 o elastic scattering of 12 C on 40 Ca shows structure Fusion of 16 O on 40 Ca does not. In the end, it seemed that these structures were sometimes present in alpha-particle nuclei, but almost never in others. Some optimists, continued the pursuit. We also looked at the total fusion cross section in systems that showed resonances in scattering.

365

Detecting heavy quarks  

SciTech Connect

In this exercise we examine the performance of a detector specifically configured to tag heavy quark (HQ) jets through direct observations of D-meson decays with a high resolution vertex detector. To optimize the performance of such a detector, we assume the small diamond beam crossing configuration as described in the 1978 ISABELLE proposal, giving a luminosity of 10/sup 32/ cm/sup -2/ sec/sup -1/. Because of the very large backgrounds from light quark (LQ) jets, most triggering schemes at this luminosity require high P/sub perpendicular to/ leptons and inevitably give missing neutrinos. If alternative triggering schemes could be found, then one can hope to find and calculate the mass of objects decaying to heavy quarks. A scheme using the high resolution detector will also be discussed in detail. The study was carried out with events generated by the ISAJET Monte Carlo and a computer simulation of the described detector system. (WHK)

Benenson, G.; Chau, L.L.; Ludlam, T.; Paige, F.E.; Platner, E.D.; Protopopescu, S.D.; Rehak, P.

1983-01-01T23:59:59.000Z

366

Heavy Ions - Cyclotron  

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

Heavy Ions Heavy Ions Heavy ions used at the BASE Facility are accelerated in the form of "cocktails," named because of the fact that several heavy ions with the same mass-to-charge ratio are sent into the Cyclotron, which accelerates the ions while acting as a precision mass separator. The Control Room Operator then uses Cyclotron frequency to select only the desired ion, a process that takes about 2 minutes. We provide four standard cocktails: 4.5, 10, 16, and 30 MeV/nucleon. Depending on the cocktail, LETs from 1 to 100 MeV/(mg/cm^2) and flux levels of up to 1E7 ions/cm2-sec are available. Parts are tested in our vacuum chamber, and can be remotely positioned horizontally, vertically, or rotationally (y and z axes) with the motion table. An alignment laser is available to ensure the part is in the center of the beam. Mounting hardware is readily available. 12xBNC (F-F), 2x25-pin D (F-M or M-F), 4x40-pin flat ribbon (M-M), 4x50-pin flat ribbon (M-M), 12xSMA (F-F), and 2xEthernet vacuum feedthroughs are mounted upon request. (The 4x40-pin and 4x50-pin flat ribbon connectors are wired straight across, so you will need a F-F adapter to correct the pin numbers to normal.) Holes are provided through the cave shielding blocks for connecting additional test equipment, with a distance of approximately 10 feet from vacuum feedthrough to the top of the shielding block.

367

Utah Heavy Oil Program  

SciTech Connect

The Utah Heavy Oil Program (UHOP) was established in June 2006 to provide multidisciplinary research support to federal and state constituents for addressing the wide-ranging issues surrounding the creation of an industry for unconventional oil production in the United States. Additionally, UHOP was to serve as an on-going source of unbiased information to the nation surrounding technical, economic, legal and environmental aspects of developing heavy oil, oil sands, and oil shale resources. UHOP fulGilled its role by completing three tasks. First, in response to the Energy Policy Act of 2005 Section 369(p), UHOP published an update report to the 1987 technical and economic assessment of domestic heavy oil resources that was prepared by the Interstate Oil and Gas Compact Commission. The UHOP report, entitled 'A Technical, Economic, and Legal Assessment of North American Heavy Oil, Oil Sands, and Oil Shale Resources' was published in electronic and hard copy form in October 2007. Second, UHOP developed of a comprehensive, publicly accessible online repository of unconventional oil resources in North America based on the DSpace software platform. An interactive map was also developed as a source of geospatial information and as a means to interact with the repository from a geospatial setting. All documents uploaded to the repository are fully searchable by author, title, and keywords. Third, UHOP sponsored Give research projects related to unconventional fuels development. Two projects looked at issues associated with oil shale production, including oil shale pyrolysis kinetics, resource heterogeneity, and reservoir simulation. One project evaluated in situ production from Utah oil sands. Another project focused on water availability and produced water treatments. The last project considered commercial oil shale leasing from a policy, environmental, and economic perspective.

J. Bauman; S. Burian; M. Deo; E. Eddings; R. Gani; R. Goel; C.K. Huang; M. Hogue; R. Keiter; L. Li; J. Ruple; T. Ring; P. Rose; M. Skliar; P.J. Smith; J.P. Spinti; P. Tiwari; J. Wilkey; K. Uchitel

2009-10-20T23:59:59.000Z

368

A MATHEMATICAL EVOLUTION MODEL FOR PHYTOREMEDIATION OF METALS  

E-Print Network (OSTI)

polluted by heavy metals such as chromium. One of the new innovative methods of eradi- cating metals from prompted the need for new less expensive technologies. Remediation techniques have been based on either, the contaminant in the soil can be remediated to below a prescribed EPA target. Section 4 numerically simulates

Thomas, Diana

369

Constitutive Expression of a High-Affinity Sulfate Transporter in Indian Mustard Affects Metal Tolerance and Accumulation  

E-Print Network (OSTI)

of a gene that confers enhanced metal translocation or tolerance. TOXIC METALS and metalloids of heavy metals there is an increased demand for reduced S compounds like GSH and PCs, and genes involvedConstitutive Expression of a High-Affinity Sulfate Transporter in Indian Mustard Affects Metal

370

Heavy Vehicle Propulsion Materials: Recent Progress and Future Plans  

SciTech Connect

The Heavy Vehicle Propulsion Materials Program provides enabling materials technology for the U.S. DOE Office of Heavy Vehicle Technologies (OHVT). The technical agenda for the program is based on an industry assessment and the technology roadmap for the OHVT. A five-year program plan was published in 2000. Major efforts in the program are materials for diesel engine fuel systems, exhaust aftertreatment, and air handling. Additional efforts include diesel engine valve-train materials, structural components, and thermal management. Advanced materials, including high-temperature metal alloys, intermetallics, cermets, ceramics, amorphous materials, metal- and ceramic-matrix composites, and coatings, are investigated for critical engine applications. Selected technical issues and planned and ongoing projects as well as brief summaries of several technical highlights are given.

D. Ray Johnson; Sidney Diamond

2001-05-14T23:59:59.000Z

371

Defining the Proton Topology of the Zr6Based Metal-Organic Framework NU-1000  

E-Print Network (OSTI)

,16-19 heavy metal capture,20,21 sensing,12 ionic conductivity,22 toxic industrial chemical capture,23Defining the Proton Topology of the Zr6Based Metal-Organic Framework NU-1000 Nora Planas,, Joseph E of Science, King Abdulaziz University, Jeddah, Saudi Arabia *S Supporting Information ABSTRACT: Metal

372

Copper-induced oxidative stress in three-spined stickleback : relationship with hepatic metal levels  

E-Print Network (OSTI)

contamination of aquatic ecosystems by heavy metals. Among them, copper is a widespread pollutant found, 1999). Although this metal is a required element, high concentrations appear to be toxic to freshwater1 Copper-induced oxidative stress in three-spined stickleback : relationship with hepatic metal

Paris-Sud XI, Université de

373

Title of the article MODELLING OF METAL POLLUTANT LEACHING THROUGH A SMECTITE  

E-Print Network (OSTI)

, such as heavy metals, in soil constitutes a potential source of groundwater pollution. In the literature, some1 Title of the article MODELLING OF METAL POLLUTANT LEACHING THROUGH A SMECTITE Authors Chantal as the clay CEC. Keywords Leaching; metals; clay; copper; kinetic; modelling; CEC insu-00665250,version1-9May

Paris-Sud XI, Université de

374

Study of two sampling procedures for the valorization of metal hydroxide sludge as pollutant trapper  

E-Print Network (OSTI)

treatment, CrVI 1 Introduction Industrial aqueous pollution (heavy metals) accounts for 30 to 40% of all1 Study of two sampling procedures for the valorization of metal hydroxide sludge as pollutant@emse.fr Abstract: For the valorisation of metal hydroxide sludge as adsorbent of pollutant, it is necessary to make

Boyer, Edmond

375

Historical trends of metal pollution recorded in the sediments of the Culiacan River Estuary, Northwestern Mexico  

E-Print Network (OSTI)

Historical trends of metal pollution recorded in the sediments of the Culiacan River Estuary indicated a slight pollution by all the trace metals examined, although levels of enrichment for Ni and Pb) is strongly recommended. # 2002 Elsevier Science Ltd. All rights reserved. 1. Introduction Heavy metals

Long, Bernard

376

Electrochimica Acta 50 (2004) 205210 A direct analysis of nanomolar metal ions in environmental water  

E-Print Network (OSTI)

pollution is one of the most serious subjects since water is essential for the life. Especially heavy metalElectrochimica Acta 50 (2004) 205­210 A direct analysis of nanomolar metal ions in environmental Stripping Voltammetry (SWASV) was combined with microfabricated microelectrodes to analyze metal ions

Kwak, Juhyoun

377

INL '@work' heavy equipment mechanic  

ScienceCinema (OSTI)

INL's Cad Christensen is a heavy equipment mechanic. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

Christensen, Cad

2013-05-28T23:59:59.000Z

378

RHIC | Relativistic Heavy Ion Collider  

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

breakthrough accelerator could collide electrons with heavy ions or protons at nearly the speed of light to create "snapshots" of the force binding all visible matter. Accelerator...

379

Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine Test Schedule for Representative Measurement of Heavy-Duty Engine Emissions Creation and Testing of the ACES Heavy...

380

Rheological properties of heavy oils and heavy oil emulsions  

SciTech Connect

In this study, the author investigated the effects of a number of process variables such as shear rate, measurement temperature, pressure, the influence of pretreatment, and the role of various amounts of added water on the rheology of the resulting heavy oil or the emulsion. Rheological properties of heavy oils and the corresponding emulsions are important from transportation and processing standpoints.

Khan, M.R. [Texaco, Inc., Beacon, NY (United States). Fuels and Lubricants Technology Dept.

1996-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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

(Data in thousand metric tons, unless otherwise noted) Domestic Production and Use: In 1996, clays were produced in most States except Alaska, Delaware, Hawaii, Rhode  

E-Print Network (OSTI)

46 CLAYS (Data in thousand metric tons, unless otherwise noted) Domestic Production and Use% kiln furniture, 6% fiberglass, 4% paint, and 3% rubber; ball clay--25% floor and wall tile, 21 Statistics--United States: 1992 1993 1994 1995 19961 e Production, mine: Kaolin 8,740 8,830 8,770 9,480 9

382

(Data in metric tons of contained lithium, unless otherwise noted) Domestic Production and Use: Chile was the largest lithium chemical producer in the world, followed by China, the  

E-Print Network (OSTI)

and greases and in the production of synthetic rubber. Salient Statistics--United States: 1995 1996 1997 1998100 LITHIUM (Data in metric tons of contained lithium, unless otherwise noted) Domestic Production States, Russia, and Argentina, in descending order of production. Australia and Canada were major

383

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1997, based on contained zinc recoverable from  

E-Print Network (OSTI)

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining and smelting: 1993 1994 1995 1996 1997e Production: Mine, recoverable 488 570 614 600 6071 Primary slab zinc 240 217

384

(Data in metric tons of contained lithium, unless otherwise noted) Domestic Production and Use: The United States was the largest producer and consumer of lithium minerals and  

E-Print Network (OSTI)

and greases and in the production of synthetic rubber. Salient Statistics--United States: 1992 1993 1994 199598 LITHIUM (Data in metric tons of contained lithium, unless otherwise noted) Domestic Production worldwide. The value of domestic lithium production was estimated to be about $115 million in 1996. Two

385

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2000, based on contained zinc recoverable from  

E-Print Network (OSTI)

186 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production three-fourths of production. Three primary and 12 large- and medium-sized secondary smelters refined compounds and dust were used principally by the agriculture, chemical, paint, and rubber industries. Major

386

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1999, based on contained zinc recoverable from  

E-Print Network (OSTI)

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining and smelting: 1995 1996 1997 1998 1999e Production: Mine, recoverable1 614 600 605 722 775 Primary slab zinc 232 226

387

(Data in metric tons of lithium content, unless otherwise noted) Domestic Production and Use: Chile was the largest lithium chemical producer in the world; Argentina, China,  

E-Print Network (OSTI)

in the manufacture of lubricants and greases and in the production of synthetic rubber. Salient Statistics98 LITHIUM (Data in metric tons of lithium content, unless otherwise noted) Domestic Production from domestic resources, reported production and value of production data cannot be published

388

(Data in metric tons of lithium content, unless otherwise noted) Domestic Production and Use: Chile was the largest lithium chemical producer in the world; Argentina, China,  

E-Print Network (OSTI)

in the manufacture of lubricants and greases and in the production of synthetic rubber. Salient Statistics96 LITHIUM (Data in metric tons of lithium content, unless otherwise noted) Domestic Production from domestic resources, reported production and value of production data cannot be published

389

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2006, based on contained zinc recoverable from  

E-Print Network (OSTI)

186 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production accounted for about 80% of total U.S. production. Two primary and 12 large- and medium-sized secondary, and rubber industries. Major coproducts of zinc mining and smelting, in order of decreasing tonnage, were

390

(Data in metric tons of contained lithium, unless otherwise noted) Domestic Production and Use: Chile was the largest lithium chemical producer in the world, followed by China,  

E-Print Network (OSTI)

and greases and in the production of synthetic rubber. Salient Statistics--United States: 1994 1995 1996 1997102 LITHIUM (Data in metric tons of contained lithium, unless otherwise noted) Domestic Production, the United States, and Argentina, in descending order of production. Australia and Canada were major

391

(Data in metric tons of contained lithium, unless noted) Domestic Production and Use: The United States was the largest producer and consumer of lithium minerals and  

E-Print Network (OSTI)

and greases and synthetic rubber production. Salient Statistics--United States: 1991 1992 1993 1994 1995e96 LITHIUM (Data in metric tons of contained lithium, unless noted) Domestic Production and Use. The value of domestic lithium production was estimated to be about $115 million in 1995. Two companies

392

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2003, based on contained zinc recoverable from  

E-Print Network (OSTI)

188 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production three-fourths of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber

393

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2005, based on contained zinc recoverable from  

E-Print Network (OSTI)

190 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production accounted for 86% of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber

394

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1998, based on contained zinc recoverable from  

E-Print Network (OSTI)

192 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production principally by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining--United States: 1994 1995 1996 1997 1998e Production: Mine, recoverable 570 614 598 605 6551 Primary slab zinc

395

(Data in metric tons of lithium content, unless otherwise noted) Domestic Production and Use: Chile was the largest lithium chemical producer in the world; Argentina, China,  

E-Print Network (OSTI)

in the manufacture of lubricants and greases and in the production of synthetic rubber. Salient Statistics100 LITHIUM (Data in metric tons of lithium content, unless otherwise noted) Domestic Production from domestic resources, reported production and value of production data cannot be published

396

(Data in metric tons unless otherwise noted) Domestic Production and Use: Indium was not recovered from ores in the United States in 2007. Indium-containing  

E-Print Network (OSTI)

were exported to Canada for processing. Two companies, one in New York and the other in Rhode Island for the recycling industry to handle because of large capital costs, environmental restrictions, and storage space gallium diselenide (CIGS) solar cells require approximately 50 metric tons of indium to produce 1 gigawatt

397

Metal oxide films on metal  

DOE Patents (OSTI)

A structure including a thin film of a conductive alkaline earth metal oxide selected from the group consisting of strontium ruthenium trioxide, calcium ruthenium trioxide, barium ruthenium trioxide, lanthanum-strontium cobalt oxide or mixed alkaline earth ruthenium trioxides thereof upon a thin film of a noble metal such as platinum is provided.

Wu, Xin D. (Los Alamos, NM); Tiwari, Prabhat (Los Alamos, NM)

1995-01-01T23:59:59.000Z

398

(Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2005, 6 companies operated 15 primary aluminum smelters; 4 smelters  

E-Print Network (OSTI)

547 550 542 554 Norway 1,320 1,350 1,320 1,380 Russia 3,590 3,650 3,640 3,760 South Africa 863 830 850%. Tariff: Item Number Normal Trade Relations 12-31-05 Unwrought (in coils) 7601.10.3000 2.6% ad val aluminum production decreased slightly owing to cutbacks attributed to increased energy and alumina costs

399

(Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2006, 5 companies operated 13 primary aluminum smelters; 6 smelters were  

E-Print Network (OSTI)

,800 South Africa 851 890 860 900 United Arab Emirates, Dubai 75%. Tariff: Item Number Normal Trade Relations 12-31-06 Unwrought (in coils) 7601.10.3000 2.6% ad val aluminum production decreased slightly owing to cutbacks attributed to increased energy and alumina costs

400

(Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2012, 5 companies operated 10 primary aluminum smelters; 4 smelters were  

E-Print Network (OSTI)

­11): Canada, 62%; Russia, 7%; China, 5%; Mexico, 4%; and other, 22%. Tariff: Item Number Normal Trade@usgs.gov] #12;17 ALUMINUM with the amount exported in 2011, and imports of crude and semifabricated aluminum in 2012 were 21% higher than the amount imported in 2011. China, Canada, Mexico, and the Republic of Korea

Note: This page contains sample records for the topic "tons heavy metal" 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

Heavy oil transportation by pipeline  

SciTech Connect

Worldwide there are a number of pipelines used to transport heavy crude oils. The operations are facilitated in a variety of ways. For example, the Alyeska pipeline is an insulated pipeline transporting warm oil over 800 miles. This 48-inch line experiences limited heat loss due to the insulation, volume of oil contained, and heat gain due to friction and pumping. Some European trunk lines periodically handle heavy and waxy crudes. This is achieved by proper sizing of batches, following waxy crudes with non-waxy crudes, and increased use of scrapers. In a former Soviet republic, the transportation of heavy crude oil by pipeline has been facilitated by blending with a lighter Siberian crude. The paper describes the pipeline transport of heavy crudes by Interprovincial Pipe Line Inc. The paper describes enhancing heavy oil transportation by emulsion formation, droplet suspension, dilution, drag reducing agents, and heating.

Gerez, J.M.; Pick, A.R. [Interprovincial Pipe Line Inc., Edmonton, Alberta (Canada)

1996-12-31T23:59:59.000Z

402

Managing Inventories of Heavy Actinides  

SciTech Connect

The Department of Energy (DOE) has stored a limited inventory of heavy actinides contained in irradiated targets, some partially processed, at the Savannah River Site (SRS) and Oak Ridge National Laboratory (ORNL). The 'heavy actinides' of interest include plutonium, americium, and curium isotopes; specifically 242Pu and 244Pu, 243Am, and 244/246/248Cm. No alternate supplies of these heavy actinides and no other capabilities for producing them are currently available. Some of these heavy actinide materials are important for use as feedstock for producing heavy isotopes and elements needed for research and commercial application. The rare isotope 244Pu is valuable for research, environmental safeguards, and nuclear forensics. Because the production of these heavy actinides was made possible only by the enormous investment of time and money associated with defense production efforts, the remaining inventories of these rare nuclear materials are an important part of the legacy of the Nuclear Weapons Program. Significant unique heavy actinide inventories reside in irradiated Mark-18A and Mark-42 targets at SRS and ORNL, with no plans to separate and store the isotopes for future use. Although the costs of preserving these heavy actinide materials would be considerable, for all practical purposes they are irreplaceable. The effort required to reproduce these heavy actinides today would likely cost billions of dollars and encompass a series of irradiation and chemical separation cycles for at least 50 years; thus, reproduction is virtually impossible. DOE has a limited window of opportunity to recover and preserve these heavy actinides before they are disposed of as waste. A path forward is presented to recover and manage these irreplaceable National Asset materials for future use in research, nuclear forensics, and other potential applications.

Wham, Robert M [ORNL; Patton, Bradley D [ORNL

2011-01-01T23:59:59.000Z

403

heavy_oil | netl.doe.gov  

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

Heavy Oil Publications KMD Contacts Project Summaries EPAct 2005 Arctic Energy Office Announcements Software Stripper Wells Heavy oil is a vast U.S. oil resource that is...

404

Theoretical Studies on Heavy Metal Sulfides in Solution  

SciTech Connect

'Calculating the stabilities, Raman and UV spectra and acidities of As sulfides in aqueous solution', J. A. Tossell, M. D. Zimmermann and G. R. Helz. Some of the Raman spectra obtained by reacting aqueous As(OH)3 with aqueous bisulfide are shown, taken from Wood, et al. (2002). To interpret these spectra we have carried out an extensive series of calculations, detailed for the case of AsS(SH){sub 2}{sup -} in Table 1 below. By employing state of the art quantum chemical techniques to determine gas-phase harmonic and anharmonic frequencies and solution phase corrections we can accurately match features in the experimental spectrum shown in the top figure. The AsS(SH){sub 2}{sup -}...22 H{sub 2}O nanocluster employed is shown in the lower figure. For this species we have calculated the equilibrium structure and the harmonic vibrational spectrum at the CBSB7 B3LYP level. For the free solute species AsS(SH){sub 2}{sup -} we have carried out a whole series of calculations, evaluating harmonic and anharmonic vibrational frequencies at a number of different quantum mechanical levels. In the spectra below, Fig. 3 and Fig. 5 from Wood, et al. (2002), the features around 700-800 cm{sup -1} are attributed to As-O stretches and those around 350-450 cm{sup -1} to As-S stretches. In the nanocluster an isolated vibrational feature is observed at 425 cm{sup -1}, an As=S stretch, close to the value (415 cm{sup -1}) determined by Wood, et al. (2002). Analysis of the calculated frequencies for AsS(SH){sub 2}{sup -} within a polarizable continuum model yields a similar result. Taking the highest level harmonic results, obtained from a CCSD calculation, and adding anharmonic and PCM corrections at the B3LYP level (designated (3) + (5) - (1) in Table 1) gives a frequency for the intense high frequency As=S stretch within 15 cm{sup -1} of experiment. Although there is still interesting work to be done on the stabilities and the Raman and UV spectra of As sulfides, most of the basic concepts have been worked out and we are therefore proposing to move to a new area, that of humic acids (while continuing our studies complexes formed by As oxides and sulfides, now applied to functional groups present in humic acids).

Tossell, John A.

2007-10-31T23:59:59.000Z

405

Pesticide and heavy metal residues in Louisiana river otter  

E-Print Network (OSTI)

chromatography. Hercury levels averaged 1. 29 porn in liver (N=100) and 3. 88 ppm in hair (N=24), Liver and hair mercury residues were highly correlated (r=0. 98). Fetal whole body mercury levels averaged 0. 07 ppm (N=4). Fetal and maternal mercury levels... correlations between ani- mal weights and residue levels were observed for mercury, dieldrin, and mirex. There were no apparent relationships between residue levels of mercury and liver weight or liver:carcass weight ratio. There was no significant...

Beck, Debra Lynn

2012-06-07T23:59:59.000Z

406

Coal burning leaves toxic heavy metal legacy in the Arctic  

Science Journals Connector (OSTI)

...Cap in northeastern Canada have been reported (8). Pb is the most extensively studied, with results reported from Camp Century in northwestern Greenland (12) and Summit in central Greenland (11, 13–16). A total of 36 discrete ice core...

Joseph R. McConnell; Ross Edwards

2008-01-01T23:59:59.000Z

407

United abominations: Density functional studies of heavy metal chemistry  

SciTech Connect

Carbonyl and nitrile addition to uranyl (UO{sup 2}{sup 2+}) are studied. The competition between nitrile and water ligands in the formation of uranyl complexes is investigated. The possibility of hypercoordinated uranyl with acetone ligands is examined. Uranyl is studied with diactone alcohol ligands as a means to explain the apparent hypercoordinated uranyl. A discussion of the formation of mesityl oxide ligands is also included. A joint theory/experimental study of reactions of zwitterionic boratoiridium(I) complexes with oxazoline-based scorpionate ligands is reported. A computational study was done of the catalytic hydroamination/cyclization of aminoalkenes with zirconium-based catalysts. Techniques are surveyed for programming for graphical processing units (GPUs) using Fortran.

Schoendorff, George

2012-04-02T23:59:59.000Z

408

High-Level Treatment of Stormwater Heavy Metals  

E-Print Network (OSTI)

Capacities for Different Media CEC (meq/100 g) Peat Moss 22 Compost 19 Activated Carbon 5.4 Zeolite 6-Section The MCTT is comprised of three main sections: - an inlet having a conventional catchbasin with litter traps

Clark, Shirley E.

409

Heavy Metals in Glass Beads Used in Pavement Markings  

E-Print Network (OSTI)

Pavement markings are vital for safely navigating roadways. The nighttime visibility of pavement markings is enhanced by addition of retroreflective glass beads, most of which are made from recycled glass. Concern has been raised over the presence...

Mangalgiri, Kiranmayi

2012-07-16T23:59:59.000Z

410

Heavy-Electron Metals: New Highly Correlated States of Matter  

Science Journals Connector (OSTI)

...temperature T and (bottom) the inverse of the ultra-sonic attenuation coefficient a ver-sus...specific heat at low temperatures (T-~ 50 mK); the experimental results are in excellent...palladium for platinum reduces Tc to below 20 mK, and in general magnetic and nonmagnetic...

Z. FISK; D. W. HESS; C. J. PETHICK; D. PINES; J. L. SMITH; J. D. THOMPSON; J. O. WILLIS

1988-01-01T23:59:59.000Z

411

Metal Toxicity  

Science Journals Connector (OSTI)

Problems posed to plants by metal toxicity in the soils of the world are basically of two kinds. The first kind are of natural origin. These arise either as a consequence of the nature of the parent material f...

T. McNeilly

1994-01-01T23:59:59.000Z

412

(Data in thousand metric tons of boric oxide (B2O3), unless otherwise noted) Domestic Production and Use: The estimated value of boric oxide contained in minerals and compounds produced in  

E-Print Network (OSTI)

was centered in southern California. The largest producer operated an open-pit tincal and kernite mine domestic producer continued mining and processing ore at its open pit mine. The production of boron, sodium year to 60,000 tons per year by 2002. Turkey is building a 274,000-ton-per-year pyrite-burning sulfuric

413

(Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: Domestic mine production of copper in 2010 declined by about 5% to 1.12 million  

E-Print Network (OSTI)

48 COPPER (Data in thousand metric tons of copper content unless otherwise noted) Domestic Production and Use: Domestic mine production of copper in 2010 declined by about 5% to 1.12 million tons--Arizona, Utah, Nevada, New Mexico, and Montana--accounted for more than 99% of domestic production; copper also

414

Plutonium by the Ton  

Science Journals Connector (OSTI)

...N reactor at the Hanford Reservation in Senator...was in just such a meeting between senators...discuss the issue in public for fear ofviolating...and forth in secret meetings, a private group...through the year 2000. The databook reports...by the Washington Public Power Supply System...

ELIOT MARSHALL

1987-05-01T23:59:59.000Z

415

Dendritic metal nanostructures  

DOE Patents (OSTI)

Dendritic metal nanostructures made using a surfactant structure template, a metal salt, and electron donor species.

Shelnutt, John A. (Tijeras, NM); Song, Yujiang (Albuquerque, NM); Pereira, Eulalia F. (Vila Nova de Gaia, PT); Medforth, Craig J. (Winters, CA)

2010-08-31T23:59:59.000Z

416

INTRODUCTION Metals comprise about 75% of the known elements and can  

E-Print Network (OSTI)

quality. Metals have traditionally been classified into categories such as light, heavy, semimetal (i of less than 0.1%. In biochemical and bio- medical research, trace element concentrations in plant

Sparks, Donald L.

417

Heavy ion fusion--Using heavy ions to make electricity  

E-Print Network (OSTI)

for a practical fusion power reactor. HIF is the only fusionenter the reactor chamber, and focus Heavy Ion Fusion ontoengineering test reactor. The promise of fusion as a power

Celata, C.M.

2004-01-01T23:59:59.000Z

418

Heavy Ion Collisions at RHIC  

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

at Heavy Ion Colliders at Heavy Ion Colliders Theory Drivers & View from LHC Urs Achim Wiedemann CERN PH-TH NSAC Implementation Subcommittee Hearings 7 September 2012 Heavy Ion Physics - Main Tools of Theorists Understanding properties of hot and dense matter from the elementary interactions in QCD High Energy Physics String Theory Computational Physics Fluid Dynamics Dissipative fluid dynamic description * Based on: E-p conservation: 2 nd law of thermodynamics: * Sensitive to properties of matter that are calculated from first principles in quantum field theory - EOS: and sound velocity - transport coefficients: shear , bulk viscosity, conductivities ...

419

Multiyear Program Plan: Reducing Friction and Wear in Heavy Vehicles  

SciTech Connect

As described in its multiyear program plan for 1998-2000, the Office of Heavy Vehicle Technologies (OHVT) envisions the development of a fuel-flexible, energy-efficient, near-zero-emissions, heavy-duty U.S. diesel engine technology devolving into all truck classes as a real and viable strategy for reducing energy requirements for commercial transport services and the rapidly growing multipurpose vehicle market (pickups, vans, and sport utility vehicles). Implementation of the OHVT program plan will have significant national benefits in energy savings, cleaner air, more jobs, and increased gross domestic product (GDP). Successful implementation will reduce the petroleum consumption of Class 1-8 trucks by 1.4 million barrels of oil per day by 2020 and over 1.8 million by 2030, amounting to a reduction in highway petroleum consumption of 13.2% and 18.6%, respectively. All types of regulated emissions will be reduced, that is, 20% drop in PM10 emissions (41,000 metric tons per year) by 203 0, 17% reduction in CO2 greenhouse gases (205 million metric tons per year), 7% reduction in NOx, 20% reduction in NMHC, and 30% reduction in CO. An increase of 15,000 jobs by 2020 is expected, as is an increase of $24 billion in GDP. The strategy of OHVT is to focus primarily on the diesel engine since it has numerous advantages. It has the highest efficiency of any engine today, 45% versus 30% for production gasoline engines; and it can be made more efficient at least to 55% and possibly up to 63%. It is the engine of choice for heavy vehicles (trucks), because it offers power, efficiency, durability, and reliability and is used extensively in rail, marine, and off-road applications. Its emission can be ultra-low to near zero, and the production infrastructure is already in place. The primary goals of OHVT are as follows: (1) Develop by 2002 the diesel-engine enabling technologies to support large-scale industry dieselization of light trucks, achieving a 35% fuel efficiency improvement over equivalent gasoline-fueled trucks. (2) Develop by 2004 the enabling technology for a Class 7-8 truck with a fuel efficiency of 10 mpg (at 65 mph) that will meet prevailing emission standards, using either diesel or a liquid alternative fuel. (3) Develop by 2006 diesel engines with fuel flexibility and a thermal efficiency of 55% with liquid alternative fuels, and a thermal efficiency of 55% with dedicated gaseous fuels. (4) Develop a methodology for analyzing and evaluating the operation of a heavy vehicle as an integrated system, considering such factors as engine efficiency; emissions; rolling resistance; aerodynamic drag; friction, wear, and lubrication effects; auxiliary power units; material substitutions for reducing weight; and other sources of parasitic energy losses. Overarching these considerations is the need to preserve system functionality, cost, competitiveness, reliability, durability, and safety.

R.R. Fessler; G.R. Fenske

1999-12-13T23:59:59.000Z

420

Experimental Study of In Situ Combustion with Tetralin and Metallic Catalysts  

E-Print Network (OSTI)

or metallic catalysts; the second run used heavy oil premixed with 3 wt% tetralin and 500ppm nickel catalyst; and the third run was with heavy oil premixed with 3 wt% tetralin and 500ppm iron catalyst. For the three runs, the cell production pressure was kept...

Palmer-Ikuku, Emuobonuvie

2010-01-16T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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.


421

Alaska has 4. 0 trillion tons of low-sulfur coal: Is there a future for this resource  

SciTech Connect

The demand for and use of low-sulfur coal may increase because of concern with acid rain. Alaska's low-sulfur coal resources can only be described as enormous: 4.0 trillion tons of hypothetical onshore coal. Mean total sulfur content is 0.34% (range 0.06-6.6%, n = 262) with a mean apparent rank of subbituminous B. There are 50 coal fields in Alaska; the bulk of the resources are in six major fields or regions: Nenana, Cook Inlet, Matanuska, Chignik-Herendeen Bay, North Slope, and Bering River. For comparison, Carboniferous coals in the Appalachian region and Interior Province have a mean total sulfur content of 2.3% (range 0.1-19.0%, n = 5,497) with a mean apparent rank of high-volatile A bituminous coal, and Rocky Mountain and northern Great Plains Cretaceous and Tertiary coals have a mean total sulfur content of 0.86% (range 0.02-19.0%, n = 2,754) with a mean apparent rank of subbituminous B. Alaskan coal has two-fifths the total sulfur of western US coals and one-sixth that of Carboniferous US coals. Even though Alaska has large resources of low-sulfur coal, these resources have not been developed because of (1) remote locations and little infrastructure, (2) inhospitable climate, and (3) long distances to potential markets. These resources will not be used in the near future unless there are some major, and probably violent, changes in the world energy picture.

Stricker, G.D. (Geological Survey, Denver, CO (USA))

1990-05-01T23:59:59.000Z

422

Processing capabilties for the elimination of contaminated metal scrapyards at DOE/ORO-managed sites. [Metal smelting facility  

SciTech Connect

Capabilities exist for reducing all the contaminated nickel, aluminum, and copper scrap to ingot form by smelting. Processing these metals at existing facilities could be completed in about 5 or 6 years. However, these metals represent only about 20% of the total metal inventories currently on hand at the DOE/ORO-managed sites. No provisions have been made for the ferrous scrap. Most of the ferrous scrap is unclassified and does not require secured storage. Also, the potential resale value of the ferrous scrap at about $100 per ton is very low in comparison. Consequently, this scrap has been allowed to accumulate. With several modifications and equipment additions, the induction melter at PGDP could begin processing ferrous scrap after its commitment to nickel and aluminum. The PGDP smelter is a retrofit installation, and annual throughput capabilities are limited. Processing of the existing ferrous scrap inventories would not be completed until the FY 1995-2000 time frame. An alternative proposal has been the installation of induction melters at the other two enrichment facilities. Conceptual design of a generic metal smelting facility is under way. The design study includes capital and operating costs for scrap preparation through ingot storage at an annual throughput of 10,000 tons per year. Facility design includes an induction melter with the capability of melting both ferrous and nonferrous metals. After three years of operation with scrapyard feed, the smelter would have excess capacity to support on-site decontamination and decomissioning projects or upgrading programs. The metal smelting facility has been proposed for FY 1984 line item funding with start-up operations in FY 1986.

Mack, J.E.; Williams, L.C.

1982-01-01T23:59:59.000Z

423

Heavy vehicle propulsion system materials program semiannual progress report for April 1999 through September 1999  

SciTech Connect

The purpose of the Heavy Vehicle Propulsion System Materials Program is the development of materials: ceramics, intermetallics, metal alloys, and metal and ceramic coatings, to support the dieselization of class 1-3 trucks to realize a 35% fuel-economy improvement over current gasoline-fueled trucks and to support commercialization of fuel-flexible LE-55 low-emissions, high-efficiency diesel engines for class 7-8 trucks.

Johnson, D.R.

2000-01-01T23:59:59.000Z

424

RHIC | Relativistic Heavy Ion Collider  

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

Relativistic Heavy Ion Collider Relativistic Heavy Ion Collider Photo of LINAC The Relativistic Heavy Ion Collider (RHIC) is a world-class particle accelerator at Brookhaven National Laboratory where physicists are exploring the most fundamental forces and properties of matter and the early universe. RHIC accelerates beams of particles (e.g., the nuclei of heavy atoms such as gold) to nearly the speed of light, and smashes them together to recreate a state of matter thought to have existed immediately after the Big Bang some 13.8 billion years ago. STAR and PHENIX, two large detectors located around the 2.4-mile-circumference accelerator, take "snapshots" of these collisions to reveal a glimpse of the basic constituents of visible matter, quarks and gluons. Understanding matter at

425

LCLS Heavy Met Outgassing Tests  

SciTech Connect

A Heavy Met that is 95% tungsten, 3% nickel and 2% iron and sintered to 100% density and is Ultra High Vacuum (UHV) compatible is proposed for use as the X-ray slit in the Front End Enclosure and the Fixed Mask for the Linac Coherent Light Source (LCLS). The Heavy Met was tested in the LLNL Vacuum Sciences and Engineering Lab (VSEL) to determine its outgassing rate and its overall compatibility with the vacuum requirements for LCLS.

Kishiyama, K. I.

2010-12-01T23:59:59.000Z

426

DOE Hydrogen and Fuel Cells Program Record 11002: Number of Cars Equivalent to 100 Metric Tons of Avoided Greenhouse Gases per Year  

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

02 Date: January 5, 2011 02 Date: January 5, 2011 Title: Number of Cars Equivalent to 100 Metric Tons of Avoided Greenhouse Gases per Year Originator: Andrea Chew & Tien Nguyen Approved by: Sunita Satyapal Date: January 25, 2011 A conventional mid-size gasoline car emits 0.45 kg of greenhouse gases (GHG) per mile. 1 One hundred (100) metric tons (t) of GHG per year are equivalent to emissions from 17 conventional gasoline cars. Item: The GHG emissions cited above are from an analysis record prepared by the Department of Energy's Fuel Cell Technologies and Vehicle Technologies Programs on life-cycle emissions of greenhouse gases and petroleum use for several light-duty vehicles. 1 For cars that are between 1 and 5 years old, the average mileage is approximately 13,000,

427

Single-step multiplex detection of toxic metal ions by Au nanowires-on-chip sensor using reporter elimination  

E-Print Network (OSTI)

Single-step multiplex detection of toxic metal ions by Au nanowires-on-chip sensor using reporter sensitively detect multiple toxic metal ions. Most importantly, the reporter elimination method simplified by using this sensor. 1. Introduction Heavy metal ions such as mercury (Hg2+ ), silver (Ag+ ), and lead (Pb

Kim, Bongsoo

428

Declining metal levels at Foundry Cove (Hudson River, New York): Response to localized dredging of contaminated sediments  

E-Print Network (OSTI)

a well-recognized case of heavy metal pollution at Foundry Cove (FC), Hudson River, New York. This tidal River. Ă? 2007 Elsevier Ltd. All rights reserved. Keywords: River pollution; Cadmium; Metal removalDeclining metal levels at Foundry Cove (Hudson River, New York): Response to localized dredging

Levinton, Jeffrey

429

Demonstration and evaluation of the 20-ton-capacity load-cell-based weighing system, Eldorado Resources, Ltd. , Port Hope, Ontario, September 3-4, 1986  

SciTech Connect

On September 3 and 4, 1986, the prototype 20-ton-capacity load-cell-based weighing system (LCBWS) developed by the US Enrichment Safeguards Program (ESP) at Martin Marietta Energy Systems, Inc., was field tested at the Eldorado Resources, Ltd., (ERL) facility in Port Hope, Ontario. The 20-ton-capacity LCBWS has been designed and fabricated for use by the International Atomic Energy Agency (IAEA) for verifying the masses of large-capacity UF/sub 6/ cylinders during IAEA safeguards inspections at UF/sub 6/ handling facilities. The purpose of the Canadian field test was to demonstrate and to evaluate with IAEA inspectorates and with UF/sub 6/ bulk handling facility operators at Eldorado the principles, procedures, and hardware associated with using the 20-ton-capacity LCBWS as a portable means for verifying the masses of 10- and 14-ton UF/sub 6/ cylinders. Session participants included representatives from the IAEA, Martin Marietta Energy Systems, Inc., Eldorado Resources, Ltd., the Atomic Energy Control Board (AECB), and the International Safeguards Project Office (ISPO) at Brookhaven National Laboratory (BNL). Appendix A presents the list of participants and their organization affiliation. The two-day field test involved a formal briefing by ESP staff, two cylinder weighing sessions, IAEA critiques of the LCBWS hardware and software, and concluding discussions on the field performance of the system. Appendix B cites the meeting agenda. Summarized in this report are (1) the technical information presented by the system developers, (2) results from the weighing sessions, and (3) observations, suggestions, and concluding statements from meeting participants.

Cooley, J.N.; Huxford, T.J.

1986-10-01T23:59:59.000Z

430

Composite metal membrane  

DOE Patents (OSTI)

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, Nathaniel M. (Espanola, NM); Dye, Robert C. (Los Alamos, NM); Snow, Ronny C. (Los Alamos, NM); Birdsell, Stephan A. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

431

Composite metal membrane  

DOE Patents (OSTI)

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, N.M.; Dye, R.C.; Snow, R.C.; Birdsell, S.A.

1998-04-14T23:59:59.000Z

432

RHIC | Relativistic Heavy Ion Collider  

NLE Websites -- All DOE Office Websites

Brookhaven National Laboratory Brookhaven National Laboratory search U.S. Department of Energy logo Home RHIC Science News Images Videos For Scientists Björn Schenke 490th Brookhaven Lecture, 12/18 Join Björn Schenke of Brookhaven Lab's Physics Department for the 490th Brookhaven Lecture, titled 'The Shape and Flow of Heavy Ion Collisions,' on Wednesday, Dec. 18, at 4 p.m. in Berkner Hall. droplets Tiny Drops of Hot Quark Soup-How Small Can They Be? New analyses indicate that collisions of small particles with large gold nuclei at the Relativistic Heavy Ion Collider may be serving up miniscule servings of hot quark-gluon plasma. RHIC Physics RHIC is the first machine in the world capable of colliding ions as heavy as gold. The Spin Puzzle RHIC is the world's only machine capable of colliding beams of polarized

433

CMVRTC: Heavy Truck Duty Cycle  

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

heavy truck duty cycle (HTDC) project heavy truck duty cycle (HTDC) project OVERVIEW The Heavy Truck Duty Cycle (HTDC) Project was initiated in 2004 and is sponsored by the US Department of Energy's (DOE's) Office of FreedomCar and Vehicle Technologies Program. ORNL designed the research program to generate real-world-based duty cycle data from trucks operating in long-haul operations and was designed to be conducted in three phases: identification of parameters to be collected, instrumentation and pilot testing, identification of a real-world fleet, design of the data collection suite and fleet instrumentation, and data collection, analysis, and development of a duty cycle generation tool (DCGT). ANL logo dana logo michelin logo Schrader logo This type of data will be useful for supporting energy efficiency

434

Elliptic flow of heavy flavors  

E-Print Network (OSTI)

The propagation of charm and bottom quarks through a ellipsoidal domain of quark gluon plasma has been studied within the ambit of non-equilibrium statistical mechanics. Energy dissipation of heavy quarks by both radiative and collisional processes are taken in to account. The experimental data on the elliptic flow of the non-photonic electrons resulting from the semi-leptonic decays of hadrons containing heavy flavours has been reproduced with the same formalism that has been used earlier to reproduce the nuclear suppression factors. The elliptic flow of the non-photonic electron from heavy meson decays produced in nuclear collisions at LHC and low energy RHIC run have also been predicted.

Das, Santosh K

2010-01-01T23:59:59.000Z

435

Elliptic flow of heavy flavors  

E-Print Network (OSTI)

The propagation of charm and bottom quarks through an ellipsoidal domain of quark gluon plasma has been studied within the ambit of non-equilibrium statistical mechanics. Energy dissipation of heavy quarks by both radiative and collisional processes are taken in to account. The experimental data on the elliptic flow of the non-photonic electrons resulting from the semi-leptonic decays of hadrons containing heavy flavours has been reproduced with the same formalism that has been used earlier to reproduce the nuclear suppression factors. The elliptic flow of the non-photonic electron from heavy meson decays produced in nuclear collisions at LHC and low energy RHIC run have also been predicted.

Santosh K Das; Jan-e Alam

2010-08-16T23:59:59.000Z

436

Pionic Fusion of Heavy Ions  

Science Journals Connector (OSTI)

We report the first experimental observation of the pionic fusion of two heavy ions. The 12C(12C,24Mg)?0 and 12C(12C,24Na)?+ cross sections have been measured to be 208±38 and 182±84 pb, respectively, at Ecm=137MeV. This cross section for heavy-ion pion production, at an energy just 6 MeV above the absolute energy-conservation limit, constrains possible production mechanisms to incorporate the kinetic energy of the entire projectile-target system as well as the binding energy gained in fusion.

D. Horn; G. C. Ball; D. R. Bowman; W. G. Davies; D. Fox; A. Galindo-Uribarri; A. C. Hayes; G. Savard; L. Beaulieu; Y. Larochelle; C. St-Pierre

1996-09-16T23:59:59.000Z

437

Spontaneous emission of heavy clusters  

Science Journals Connector (OSTI)

The lifetimes of some heavy nuclei relative to the spontaneous emission of various clusters heavier than the alpha particle are estimated with a model extended from the fission theory of alpha decay, showing that this phenomenon is a new manifestation of the nuclear shell structure. A greater probability is obtained for parent-heavy-cluster combinations leading to a magic or almost magic daughter nucleus. The analytical formula obtained allows one to handle a large number of cases to search for new kinds of radioactivities.

D N Poenaru; M Ivascu; A Sandulescu; W Greiner

1984-01-01T23:59:59.000Z

438

Central collisions of heavy ions  

SciTech Connect

This report describes the activities of the Heavy Ion Physics Group at the University of California, Riverside from October 1, 1990 to September 30, 1991. During this period, our program focuses on particle production at AGS energies, and correlation studies at the Bevalac in nucleus central collisions. We participated in the preparation of letters of intent for two RHIC experiments -- the OASIS proposal and the Di-Muon proposal -- and worked on two RHIC R D efforts -- a silicon strip detector project and a muon-identifier project. A small fraction of time was also devoted to physics programs outside the realm of heavy ion reactions by several individuals.

Fung, Sun-yiu.

1991-10-01T23:59:59.000Z

439

PLATINUM-GROUP METALS (Platinum, palladium, rhodium, ruthenium, iridium, osmium)  

E-Print Network (OSTI)

for air-pollution abatement in both light- and heavy-duty vehicles. PGMs are also used in the chemical in kilograms unless otherwise noted) Domestic Production and Use: The Stillwater and East Boulder Mines in south-central Montana were the only primary platinum-group metals (PGMs) mines in the United States

440

PLATINUM-GROUP METALS (Platinum, palladium, rhodium, ruthenium, iridium, osmium)  

E-Print Network (OSTI)

for air-pollution abatement in both light- and heavy-duty vehicles. PGMs are also used in the chemical in kilograms unless otherwise noted) Domestic Production and Use: The Stillwater and East Boulder Mines in south-central Montana are the only primary platinum-group metals (PGMs) mines in the United States

Note: This page contains sample records for the topic "tons heavy metal" 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

Heavy quarks in effective field theories  

E-Print Network (OSTI)

Heavy quark physics serves as a probe to understand QCD, measure standard model parameters, and look for signs of new physics. We study several aspects of heavy quark systems in an effective field theory framework, including ...

Jain, Ambar

2009-01-01T23:59:59.000Z

442

Investigations on catalyzed steam gasification of biomass: feasibility study of methane production via catalytic gasification of 200 tons of wood per day  

SciTech Connect

This report is a result of an additional study made of the economic feasibility of producing substitute natural gas (SNG) from wood via catalytic gasification with steam. The report has as its basis the original 2000 tons of wood per day study generated from process development unit testing performed by the Pacific Northwest Laboratory. The goal of this additional work was to determine the feasibility of a smaller scale plant one-tenth the size of the original or 200 tons of dry wood feed per day. Plant production based on this wood feed is 2.16 MM Scfd of SNG with a HHV of 956 Btu per Scf. All process and support facilities necessary to convert wood to SNG are included in this study. The plant location is Newport, Oregon. The capital cost for the plant is $26,680,000 - September 1980 basis. Gas production costs which allow for return on capital have been calculated for various wood prices for both utility and private investor financing. These wood prices represent the cost of unchipped wood delivered to the plant site. For utility financing, the gas production costs are, respectively, $14.34, $14.83, $15.86, and $17.84 per MM Btu for wood costs of $5, $10, $20, and $40 per dry ton. For private investor financing, the corresponding product costs are $18.76, $19.26, $20.28, and $22.31 per MM Btu for the corresponding wood costs. The costs calculated by the utility financing method includes a return on equity of 15% and an interest rate of 10% on the debt. The private investor financing method, which is 100% equity financing, incorporates a discounted cash flow (DCF) return on equity of 12%. The thermal efficiency without taking an energy credit for char is 57.4%.

Mudge, L.K.; Weber, S.L.; Mitchell, D.H.; Sealock, L.J. Jr.; Robertus, R.J.

1981-01-01T23:59:59.000Z

443

A nuclear criticality safety assessment of the loss of moderation control in 2 1/2 and 10-ton cylinders containing enriched UF{sub 6}  

SciTech Connect

Moderation control for maintaining nuclear criticality safety in 2 {1/2}-ton, 10-ton, and 14-ton cylinders containing enriched uranium hexafluoride (UF{sub 6}) has been used safely within the nuclear industry for over thirty years, and is dependent on cylinder integrity and containment. This assessment evaluates the loss of moderation control by the breaching of containment and entry of water into the cylinders. The first objective of this study was to estimate the required amounts of water entering these large UF{sub 6} cylinders to react with, and to moderate the uranium compounds sufficiently to cause criticality. Hypothetical accident situations were modeled as a uranyl fluoride (UO{sub 2}F{sub 2}) slab above a UF{sub 6} hemicylinder, and a UO{sub 2}F{sub 2} sphere centered within a UF{sub 6} hemicylinder. These situations were investigated by computational analyses utilizing the KENO V.a Monte Carlo Computer Code. The results were used to estimate both the masses of water required for criticality, and the limiting masses of water that could be considered safe. The second objective of the assessment was to calculate the time available for emergency control actions before a criticality would occur, i.e., a {open_quotes}safetime{close_quotes}, for various sources of water and different size openings in a breached cylinder. In the situations considered, except the case for a fire hose, the safetime appears adequate for emergency control actions. The assessment shows that current practices for handling moderation controlled cylinders of low enriched UF{sub 6}, along with the continuation of established personnel training programs, ensure nuclear criticality safety for routine and emergency operations.

Newvahner, R.L. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States); Pryor, W.A. [PAI Corp., Oak Ridge, TN (United States)

1991-12-31T23:59:59.000Z

444

Strangeness signals in heavy ion collisions  

SciTech Connect

The experimental data on strange meson and strange baryon production in relativistic heavy ion collisions are reviewed.

Remsberg, L.P.

1992-11-01T23:59:59.000Z

445

Strangeness signals in heavy ion collisions  

SciTech Connect

The experimental data on strange meson and strange baryon production in relativistic heavy ion collisions are reviewed.

Remsberg, L.P.

1992-01-01T23:59:59.000Z

446

Heavy oils (natural and refined)  

SciTech Connect

This section of the Petroleum and Coal review again contains discussions on the analysis of asphalts, bitumens, tars, and pitches as well as heavy natural and refined oils. The characterization of these heavy (high-boiling) materials impacts the way they are produced, their effect on the processing environment, and their suitability for various end products. The analysis of these heavy materials is becoming increasingly important as crude oil stocks get heavier and larger quantities of high-boiling materials are processed to derive clean lower boiling products. This review covers articles found in the literature in the last two years. This review will cover new or improved analytical procedures and applications to new sources of heavy oils. This review will be subdivided into individual separation or analytical techniques. Combined analytical techniques (e.g., GC-FT-IR) will be included under the technique most emphasized in the article. The review is categorized further by chromatographic techniques, spectroscopic techniques, thermal techniques, and miscellaneous. 71 refs.

Lintelmann, K.A. [Marathon Oil Co., Littleton, CO (United States)

1995-06-15T23:59:59.000Z

447

The Search for Heavy Elements  

ScienceCinema (OSTI)

The 1994 documentary "The Search for Heavy Elements" chronicles the expansion of the periodic table through the creation at Berkeley Lab of elements heavier than uranium. The documentary features a mix of rarely-seen archival footage, historical photos, and interviews with scientists who made history, such as Glenn Seaborg and Albert Ghiorso.

None

2010-01-08T23:59:59.000Z

448

Fusion and Heavy Ion Reactions  

Science Journals Connector (OSTI)

......February 2004 research-article Articles Fusion and Heavy Ion Reactions David M. Brink...useful for understanding of sub-barrier fusion processes. The Christensen-Winther...potentials like the CW interaction give good fusion cross-sections near and for a few MeV......

David M. Brink

2004-02-01T23:59:59.000Z

449

Heavy quark physics from LEP  

SciTech Connect

A review of some of the latest results on heavy flavor physics from the LEP Collaborations is presented. The emphasis is on B physics, particularly new results and those where discrepancies is given of the many techniques which have been developed to permit these analyses.

Dornan, P.J. [Imperial College of Science Technology and Medicine, London (United Kingdom)

1997-01-01T23:59:59.000Z

450

The Search for Heavy Elements  

SciTech Connect

The 1994 documentary "The Search for Heavy Elements" chronicles the expansion of the periodic table through the creation at Berkeley Lab of elements heavier than uranium. The documentary features a mix of rarely-seen archival footage, historical photos, and interviews with scientists who made history, such as Glenn Seaborg and Albert Ghiorso.

2008-04-17T23:59:59.000Z

451

Proton Distribution in Heavy Nuclei  

DOE R&D Accomplishments (OSTI)

It is reasoned that, from considerations connected with beta-decay stability and Coulomb repulsion forces, a neutron excess is developed on the surface of heavy nuclei. Several consequences of this qualitative analysis in nucleon interactions are briefly noted. (K.S.)

Johnson, M. H; Teller, E.

1953-11-13T23:59:59.000Z

452

Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions  

E-Print Network (OSTI)

Heavy baryon/meson ratios Lambda(c)/D(0) and Lambda(b)/(B) over bar (0) in relativistic heavy ion collisions are studied in the quark coalescence model. For heavy baryons, we include production from coalescence of heavy quarks with free light quarks...

Oh, Yongseok; Ko, Che Ming; Lee, Su Houng; Yasui, Shigehiro.

2009-01-01T23:59:59.000Z

453

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

454

Heavy Quark Production in ep Collisions  

E-Print Network (OSTI)

Heavy Quark Production in ep Collisions o Introduction o Charm Production o Beauty Production o in ep collisions 23 February 2007 2/17 Heavy Flavor Production Boson-Gluon Fusion, dominant process Hard of the proton: #12;G. Leibenguth, Heavy Quarks Production in ep collisions 23 February 2007 3/17 HERA, Electron

455

3, 37453768, 2003 Heavy hydrogen in  

E-Print Network (OSTI)

ACPD 3, 3745­3768, 2003 Heavy hydrogen in the stratosphere T. Ršockmann et al. Title Page Abstract/3745/ © European Geosciences Union 2003 Atmospheric Chemistry and Physics Discussions Heavy hydrogen Heavy hydrogen in the stratosphere T. Ršockmann et al. Title Page Abstract Introduction Conclusions

Paris-Sud XI, Université de

456

Heavy oil production from Alaska  

SciTech Connect

North Slope of Alaska has an estimated 40 billion barrels of heavy oil and bitumen in the shallow formations of West Sak and Ugnu. Recovering this resource economically is a technical challenge for two reasons: (1) the geophysical environment is unique, and (2) the expected recovery is a low percentage of the oil in place. The optimum advanced recovery process is still undetermined. Thermal methods would be applicable if the risks of thawing the permafrost can be minimized and the enormous heat losses reduced. Use of enriched natural gas is a probable recovery process for West Sak. Nearby Prudhoe Bay field is using its huge natural gas resources for pressure maintenance and enriched gas improved oil recovery (IOR). Use of carbon dioxide is unlikely because of dynamic miscibility problems. Major concerns for any IOR include close well spacing and its impact on the environment, asphaltene precipitation, sand production, and fines migration, in addition to other more common production problems. Studies have indicated that recovering West Sak and Lower Ugnu heavy oil is technically feasible, but its development has not been economically viable so far. Remoteness from markets and harsh Arctic climate increase production costs relative to California heavy oil or Central/South American heavy crude delivered to the U.S. Gulf Coast. A positive change in any of the key economic factors could provide the impetus for future development. Cooperation between the federal government, state of Alaska, and industry on taxation, leasing, and permitting, and an aggressive support for development of technology to improve economics is needed for these heavy oil resources to be developed.

Mahmood, S.M.; Olsen, D.K. [NIPER/BDM-Oklahoma, Inc., Bartlesville, OK (United States); Thomas, C.P. [Idaho National Engineering Lab., Idaho Falls, ID (United States)

1995-12-31T23:59:59.000Z

457

Comparing Emissions Benefits from Regulating Heavy Vehicle Idling...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

from Regulating Heavy Vehicle Idling Comparing Emissions Benefits from Regulating Heavy Vehicle Idling 2005 Diesel Engine Emissions Reduction (DEER) Conference...

458

Refiner options for converting and utilizing heavy fuel oil  

SciTech Connect

Ongoing advances in established technologies, together with recent commercial applications of residue fluid catalytic cracking (RFCC), automated residue demetallization, solvent deasphalting and gasification of pitch and coke, have markedly enhanced options for processing and economically using residues. Key long-term driving forces for processing strategies are: the need for flexibility to handle heavy, high-metals crude oils, and the economic benefit of being able to convert low-value residues to high-value light transportation fuels, hydrogen and electric power. Narrowing light/heavy crude oil price differentials and relatively low crude oil price levels since the early 1990s until the first quarter of 1996 have slowed the addition of new bottom-of-the-barrel conversion projects over the past two years. At the same time, world crude oil demand has increased at an annual average rate of nearly one million barrels/day (MMbpd) since 1985. Some major producer/refining companies forecast this rate of increase to continue well into the next decade. The inevitable net result will be the increased production of heavier crude oils. The authors project that this will be accompanied by flat or declining markets for heavy fuel oil and a resultant need for additional residue conversion/utilization capacity. The paper discusses technology application and status, economic observations, and technology outlook.

Dickenson, R.L.; Biasca, F.E.; Schulman, B.L.; Johnson, H.E. [SFA Pacific, Inc., Mountain View, CA (United States)

1997-02-01T23:59:59.000Z

459

Open heavy flavor production at RHIC  

E-Print Network (OSTI)

The study of heavy flavor production in relativistic heavy ion collisions is an extreme experimental challenge but provides important information on the properties of the Quark-Gluon Plasma (QGP) created in Au+Au collisions at RHIC. Heavy-quarks are believed to be produced in the initial stages of the collision, and are essential on the understanding of parton energy loss in the dense medium created in such environment. Moreover, heavy-quarks can help to investigate fundamental properties of QCD in elementary p+p collisions. In this work we review recent results on heavy flavor production and their interaction with the hot and dense medium at RHIC.

A. A. P. Suaide

2007-02-16T23:59:59.000Z

460

Impact and future of heavy oil produciton  

SciTech Connect

Heavy oil resources are becoming increaingly important in meeting world oil demand. Heavy oil accounts for 10% of the worlds current oil production and is anticipated to grow significantly. Recent narrowing of the price margins between light and heavy oil and the development of regional heavy oil markets (production, refining and marketing) have prompted renewed investment in heavy oil. Production of well known heavy oil resources of Canada, Venezuela, United States, and elsewhere throughout the world will be expanded on a project-by-project basis. Custom refineries designed to process these heavy crudes are being expanded. Refined products from these crudes will be cleaner than ever before because of the huge investment. However, heavy oil still remains at a competitive disadvantage due to higher production, transportation and refining have to compete with other investment opportunities available in the industry. Expansion of the U.S. heavy oil industry is no exception. Relaxation of export restrictions on Alaskan North Slope crude has prompted renewed development of California's heavy oil resources. The location, resource volume, and oil properties of the more than 80-billion barrel U.S. heavy oil resource are well known. Our recent studies summarize the constraints on production, define the anticipated impact (volume, location and time frame) of development of U.S. heavy oil resources, and examines the $7-billion investment in refining units (bottoms conversion capacity) required to accommodate increased U.S. heavy oil production. Expansion of Canadian and Venezuelan heavy oil and tar sands production are anticipated to dramatically impact the U.S. petroleum market while displacing some imported Mideast crude.

Olsen, D.K, (National Inst. for Petroleum and Energy Research/BDM-Oklahoma Inc., Bartlesville, OK (United States))

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tons heavy metal" 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.


461

Impact and future of heavy oil produciton  

SciTech Connect

Heavy oil resources are becoming increaingly important in meeting world oil demand. Heavy oil accounts for 10% of the worlds current oil production and is anticipated to grow significantly. Recent narrowing of the price margins between light and heavy oil and the development of regional heavy oil markets (production, refining and marketing) have prompted renewed investment in heavy oil. Production of well known heavy oil resources of Canada, Venezuela, United States, and elsewhere throughout the world will be expanded on a project-by-project basis. Custom refineries designed to process these heavy crudes are being expanded. Refined products from these crudes will be cleaner than ever before because of the huge investment. However, heavy oil still remains at a competitive disadvantage due to higher production, transportation and refining have to compete with other investment opportunities available in the industry. Expansion of the U.S. heavy oil industry is no exception. Relaxation of export restrictions on Alaskan North Slope crude has prompted renewed development of California`s heavy oil resources. The location, resource volume, and oil properties of the more than 80-billion barrel U.S. heavy oil resource are well known. Our recent studies summarize the constraints on production, define the anticipated impact (volume, location and time frame) of development of U.S. heavy oil resources, and examines the $7-billion investment in refining units (bottoms conversion capacity) required to accommodate increased U.S. heavy oil production. Expansion of Canadian and Venezuelan heavy oil and tar sands production are anticipated to dramatically impact the U.S. petroleum market while displacing some imported Mideast crude.

Olsen, D.K, [National Inst. for Petroleum and Energy Research/BDM-Oklahoma Inc., Bartlesville, OK (United States)

1996-12-31T23:59:59.000Z

462

Muon bremsstrahlung on heavy atoms  

Science Journals Connector (OSTI)

The cross section for high energy muon bremsstrahlung on heavy atoms is calculated without the use of the Born approximation. It is shown that the correction to the Born approximation in the region of momentum transfers q of the order of ?c has the same order of magnitude as the well-known correction of Davies, Bethe, and Maximon. It is shown also that these corrections have different signs and nearly compensate each other.

Yu. M. Andreev and E. V. Bugaev

1997-02-01T23:59:59.000Z

463

Central collisions of heavy ions  

SciTech Connect

This report describes the activities of the Heavy Ion Physics Group at the University of California, Riverside from October 1, 1991 to September 30, 1992. During this period, the program focused on particle production at AGS energies, and correlation studies at the Bevalac in nucleus-nucleus central collisions. As part of the PHENIX collaboration, contributions were made to the Preliminary Conceptual Design Report (pCDR), and work on a RHIC silicon microstrip detector R D project was performed.

Fung, Sun-yiu.

1992-10-01T23:59:59.000Z

464

Metal-phosphate binders  

DOE Patents (OSTI)

A metal-phosphate binder is provided. The binder may include an aqueous phosphoric acid solution, a metal-cation donor including a metal other than aluminum, an aluminum-cation donor, and a non-carbohydrate electron donor.

Howe, Beth Ann [Lewistown, IL; Chaps-Cabrera, Jesus Guadalupe [Coahuila, MX

2009-05-12T23:59:59.000Z

465

SOVENT BASED ENHANCED OIL RECOVERY FOR IN-SITU UPGRADING OF HEAVY OIL SANDS  

SciTech Connect

With the depletion of conventional crude oil reserves in the world, heavy oil and bitumen resources have great potential to meet the future demand for petroleum products. However, oil recovery from heavy oil and bitumen reservoirs is much more difficult than that from conventional oil reservoirs. This is mainly because heavy oil or bitumen is partially or completely immobile under reservoir conditions due to its extremely high viscosity, which creates special production challenges. In order to overcome these challenges significant efforts were devoted by Applied Research Center (ARC) at Florida International University and The Center for Energy Economics (CEE) at the University of Texas. A simplified model was developed to assess the density of the upgraded crude depending on the ratio of solvent mass to crude oil mass, temperature, pressure and the properties of the crude oil. The simplified model incorporated the interaction dynamics into a homogeneous, porous heavy oil reservoir to simulate the dispersion and concentration of injected CO2. The model also incorporated the characteristic of a highly varying CO2 density near the critical point. Since the major challenge in heavy oil recovery is its high viscosity, most researchers have focused their investigations on this parameter in the laboratory as well as in the field resulting in disparaging results. This was attributed to oil being a complex poly-disperse blend of light and heavy paraffins, aromatics, resins and asphaltenes, which have diverse behaviors at reservoir temperature and pressures. The situation is exacerbated by a dearth of experimental data on gas diffusion coefficients in heavy oils due to the tedious nature of diffusivity measurements. Ultimately, the viscosity and thus oil recovery is regulated by pressure and its effect on the diffusion coefficient and oil swelling factors. The generation of a new phase within the crude and the differences in mobility between the new crude matrix and the precipitate readily enables removal of asphaltenes. Thus, an upgraded crude low in heavy metal, sulfur and nitrogen is more conducive for further purification.

Munroe, Norman

2009-01-30T23:59:59.000Z

466

Metal Hydrides - Science Needs  

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

Storage Grand Challenge Pre-Solicitation Meeting, June 19, 2003 1 Metal Hydrides - Science Needs TRADITIONAL METALLIC HYDRIDES: 1.5 to 2 wt.% H. Well studied. COMPLEX...

467

Probing metal solidification nondestructively  

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

Probing metal solidification nondestructively This is the first time that high-energy protons have been used to nondestructively image a large metal sample during melting and...

468

Probing metal solidification nondestructively  

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

Probing metal solidification nondestructively This is the first time that high-energy protons have been used to nondestructively image a large metal sample during melting...

469

Heavy ion Rutherford Backscattering Spectrometry (HIRBS) for the near surface characterization of electronic materials  

SciTech Connect

The use of heavy ion projectiles for Rutherford Backscattering Spectrometry (RBS) provides several potential advantages over conventional RBS with /sup 4/He beams. Among these advantages are the improved mass resolution for heavy elements (>50 amu) and the increased accessible depth of analysis. A series of experiments using 20-MeV /sup 16/O beam backscattered from a variety of targets was performed in order to examine the potential advantages of heavy ion RBS in the near-surface characterization of semiconductors with masses >50 amu. Important questions such as mass resolution, depth resolution, isotopic effects, absolute sensitivity and minimum detectable limit of impurities were investigated. Ion implantations and multiple layered structures on GaAs substrates as well as metal germanide systems were studied. The development of the method in conjunction with the channeling technique is also discussed.

Yu, K.M.

1984-12-01T23:59:59.000Z

470

Damages induced by heavy ions in titanium silicon carbide: effects of nuclear and electronic interactions at room temperature  

E-Print Network (OSTI)

, of general formula Mn+1AXn where n = {1,2,3}, M is an early transition metal, A is an A-group (mostly IIIADamages induced by heavy ions in titanium silicon carbide: effects of nuclear and electronic Thanks to their refractoriness, carbides are sensed as fuel coating for the IVth generation of reactors

Paris-Sud XI, Université de

471

Trending: Metal Oxo Bonds  

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

Trending: Metal Oxo Bonds Trending: Metal Oxo Bonds Trending: Metal Oxo Bonds Print Wednesday, 29 May 2013 00:00 Metal oxides are important for scientific and technical applications in a variety of disciplines, including materials science, chemistry, and biology. Highly covalent metal-oxygen multiple bonds (metal oxos) are the building blocks of metal oxides and have a bearing on the oxide's desirable chemical, magnetic, electronic, and thermal properties. The lack of a more sophisticated grasp of bonding in metal oxides constitutes a roadblock to innovation in a wide variety of important emergent technologies, including industrial catalysis, biomimetic transformations, and artificial photosynthesis. To address this problem, a research team from four national laboratories, three Department of Energy synchrotron user facilities, and the University of Washington has applied spectroscopic and computational analyses to a number of metal oxides, quantifying trends in metal oxo bonding for groups of metals across the periodic table.

472

Investigations on catalyzed steam gasification of biomass. Appendix A. Feasibility study of methane production via catalytic gasification of 2000 tons of wood per day  

SciTech Connect

A study has been made of the economic feasibility of producing substitute natural gas (SNG) from wood via catalytic gasification with steam. The plant design in this study was developed from information on gasifier operation supplied by the Pacific Northwest Laboratory (PNL). The plant is designed to process 2000 tons per day of dry wood to SNG. Plant production is 21.6 MM scfd of SNG with a HHV of 956 Btu per scf. All process and support facilities necessary to convert wood to SNG are included. The plant location is Newport, Oregon. The capital cost for the plant is $95,115,000 - September, 1980 basis. Gas production costs which allow for return on capital have been calculated for various wood prices for both utility and private investor financing. For utility financing, the gas production costs are respectively $5.09, $5.56, $6.50, and $8.34 per MM Btu for wood costs of $5, $10, $20, and $40 per dry ton delivered to the plant at a moisture content of 49.50 wt %. For private investor financing, the corresponding product costs are $6.62, $7.11, $8.10, and $10.06 per MM Btu. The cost calculated by the utility financing method includes a return on equity of 15% and an interest rate of 10% on the debt. The private investor financing method, which is 100% equity financing, incorporates a discounted cash flow (DCF) return on equity of 12%. The thermal efficiency without taking an energy credit for by-product char is 58.3%.

Mudge, L.K.; Weber, S.L.; Mitchell, D.H.; Sealock, L.J. Jr.; Robertus, R.J.

1981-01-01T23:59:59.000Z

473

Neglected heavy leptons at the LHC  

Science Journals Connector (OSTI)

New heavy leptons with standard model gauge couplings have well-determined cross sections for pair production. A standard pattern of mass mixing implies that the most likely decays are ???W?? and ???W?. Interestingly there have been no direct searches for heavy leptons with these decays at the LHC. However comparison with several multilepton searches allows us to set new limits on the heavy lepton masses. Three observed excesses in the signal regions prevent us from setting stronger limits.

B. Holdom and M. Ratzlaff

2014-07-18T23:59:59.000Z

474

Heavy vehicle propulsion system materials program semiannual progress report for April 1998 thru September 1998  

SciTech Connect

The purpose of the Heavy Vehicle Propulsion System Materials Program is the development of materials: ceramics, intermetallics, metal alloys, and metal and ceramic coatings, to support the dieselization of class 1--3 trucks to realize a 35{percent} fuel-economy improvement over current gasoline-fueled trucks and to support commercialization of fuel-flexible LE-55 low-emissions, high-efficiency diesel engines for class 7--8 trucks. The Office of Transportation Technologies, Office of Heavy Vehicle Technologies (OTT OHVT) has an active program to develop the technology for advanced LE-55 diesel engines with 55{percent} efficiency and low emissions levels of 2.0 g/bhp-h NO{sub x} and 0.05 g/bhp-h particulates. The goal is also for the LE-55 engine to run on natural gas with efficiency approaching that of diesel fuel. The LE-55 program is being completed in FY 1997 and, after approximately 10 years of effort, has largely met the program goals of 55{percent} efficiency and low emissions. However, the commercialization of the LE-55 technology requires more durable materials than those that have been used to demonstrate the goals. Heavy Vehicle Propulsion System Materials will, in concert with the heavy-duty diesel engine companies, develop the durable materials required to commercialize the LE-55 technologies.

Johnson, D.R.

1999-01-01T23:59:59.000Z

475

Pyroprocessing of IFR Metal Fuel  

SciTech Connect

The Integral Fast Reactor (IFR) fuel cycle features the use of an innovative reprocessing method, known as {open_quotes}pyroprocessing{close_quotes} featuring fused-salt electrofining of the spent fuel. Electrofining of IFR spent fuel involves uranium recovery by electro-transport to a solid steel cathode. The thermodynamics of the system preclude plutonium recovery in the same way, so a liquid cadmium cathode located in the electrolyte salt phase is utilized. The deposition of Pu, Am, Np, and Cm takes place at the liquid cadmium cathode in the form of cadmium intermetallic compounds (e.g, PuCd{sub 6}), and uranium deposits as the pure metal when cadmium saturation is reached. A small amount of rare earth fission products deposit together with the heavy metals at both the solid and liquid cadmium cathodes, providing a significant degree of self-protection. A full scope demonstration of the IFR fuel cycle will begin in 1993, using fuel irradiated in EBR-II.

Laidler, J.J. [Argonne National Laboratory, IL (United States)

1993-12-31T23:59:59.000Z

476

Compositional changes in heavy oil steamflood simulators.  

E-Print Network (OSTI)

??The numerical simulation of heavy oil steamfloods has generally been conducted assuming that the oil is non-volatile. Reservoir simulation has traditionally ignored compositional effect s… (more)

Lolley, Christopher Scott

2012-01-01T23:59:59.000Z

477

Adiabatic and Isothermal Compressibilities of Heavy Water  

Science Journals Connector (OSTI)

... ABOUT 50 grams of heavy water supplied by the Norsk Hydro-Elektrisk Kvaelstofaktieselskab as 99·2 per cent pure has been used in the present ...

S. BHAGAVANTAM; B. SUNDARA RAMA RAO

1937-12-25T23:59:59.000Z

478

Heavy flavor production in the STAR experiment  

E-Print Network (OSTI)

In this paper, recent STAR heavy flavor measurements in proton-proton and heavy-ion collisions are highlighted. We report studies of open charm mesons, reconstructed directly from hadronic decay products, and studies of electrons from semi-leptonic decays of heavy flavor hadrons. We also present J/$\\psi$ measurements via the di-electron decay channel at various collision systems and energies. In Au+Au collisions the energy dependence of J/$\\psi$ production measured at $\\sqrt{s_{NN}}$ = 39, 62.4 and 200 GeV is shown. Finally, prospects of heavy flavor measurements with the STAR detector upgrades are discussed.

Barbara Trzeciak; for the STAR Collaboration

2014-09-11T23:59:59.000Z

479

Trending: Metal Oxo Bonds  

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

Trending: Metal Oxo Bonds Print Trending: Metal Oxo Bonds Print Metal oxides are important for scientific and technical applications in a variety of disciplines, including materials science, chemistry, and biology. Highly covalent metal-oxygen multiple bonds (metal oxos) are the building blocks of metal oxides and have a bearing on the oxide's desirable chemical, magnetic, electronic, and thermal properties. The lack of a more sophisticated grasp of bonding in metal oxides constitutes a roadblock to innovation in a wide variety of important emergent technologies, including industrial catalysis, biomimetic transformations, and artificial photosynthesis. To address this problem, a research team from four national laboratories, three Department of Energy synchrotron user facilities, and the University of Washington has applied spectroscopic and computational analyses to a number of metal oxides, quantifying trends in metal oxo bonding for groups of metals across the periodic table.

480

Trending: Metal Oxo Bonds  

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

Trending: Metal Oxo Bonds Print Trending: Metal Oxo Bonds Print Metal oxides are important for scientific and technical applications in a variety of disciplines, including materials science, chemistry, and biology. Highly covalent metal-oxygen multiple bonds (metal oxos) are the building blocks of metal oxides and have a bearing on the oxide's desirable chemical, magnetic, electronic, and thermal properties. The lack of a more sophisticated grasp of bonding in metal oxides constitutes a roadblock to innovation in a wide variety of important emergent technologies, including industrial catalysis, biomimetic transformations, and artificial photosynthesis. To address this problem, a research team from four national laboratories, three Department of Energy synchrotron user facilities, and the University of Washington has applied spectroscopic and computational analyses to a number of metal oxides, quantifying trends in metal oxo bonding for groups of metals across the periodic table.

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481

Trending: Metal Oxo Bonds  

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

Trending: Metal Oxo Bonds Print Trending: Metal Oxo Bonds Print Metal oxides are important for scientific and technical applications in a variety of disciplines, including materials science, chemistry, and biology. Highly covalent metal-oxygen multiple bonds (metal oxos) are the building blocks of metal oxides and have a bearing on the oxide's desirable chemical, magnetic, electronic, and thermal properties. The lack of a more sophisticated grasp of bonding in metal oxides constitutes a roadblock to innovation in a wide variety of important emergent technologies, including industrial catalysis, biomimetic transformations, and artificial photosynthesis. To address this problem, a research team from four national laboratories, three Department of Energy synchrotron user facilities, and the University of Washington has applied spectroscopic and computational analyses to a number of metal oxides, quantifying trends in metal oxo bonding for groups of metals across the periodic table.

482

Trending: Metal Oxo Bonds  

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

Trending: Metal Oxo Bonds Print Trending: Metal Oxo Bonds Print Metal oxides are important for scientific and technical applications in a variety of disciplines, including materials science, chemistry, and biology. Highly covalent metal-oxygen multiple bonds (metal oxos) are the building blocks of metal oxides and have a bearing on the oxide's desirable chemical, magnetic, electronic, and thermal properties. The lack of a more sophisticated grasp of bonding in metal oxides constitutes a roadblock to innovation in a wide variety of important emergent technologies, including industrial catalysis, biomimetic transformations, and artificial photosynthesis. To address this problem, a research team from four national laboratories, three Department of Energy synchrotron user facilities, and the University of Washington has applied spectroscopic and computational analyses to a number of metal oxides, quantifying trends in metal oxo bonding for groups of metals across the periodic table.

483

The Heavy Ion Fusion Virtual National Laboratory The Heavy Ion Path to Fusion Energy  

E-Print Network (OSTI)

-consistent power plant design for a multi- beam induction linac, final focus and chamber propagationThe Heavy Ion Fusion Virtual National Laboratory The Heavy Ion Path to Fusion Energy Grant Logan Director Heavy-Ion Fusion Virtual National Laboratory Presented to FESAC Workshop on Development Paths

484

Radical scavengers from heavy hydrocarbons  

SciTech Connect

The hydrogen-donating properties of some hydrocarbons form the basis for processes such as coal liquefaction and heavy oil upgrading. However, these hydrocarbons have seldom been used for other purposes, because their potential applications have not been well recognized. Research has indicated that these hydrogen-donating hydrocarbons can be used in important reactions as radical scavengers and have properties particular to those of pure hydrocarbons without functional groups containing heteroatoms. Over years of study researchers have found that pure hydrocarbons with radical-scavenging effects nearly as high as those in conventional hindered phenolic antioxidants can be produced from petroleum, and these hydrogen-donating hydrocarbons exhibit such effects even in oxidative atmospheres (i.e., they function as antioxidants). He has also shown that these mixtures have some properties particular to pure hydrocarbons without functional groups containing heteroatoms, and they`ve seen that a mechanism based on the steric effects appears when these hydrocarbons are used in heavy oil hydroprocessing. Hydrogen-donating hydrocarbons should be a viable resource in many applications. In this article, he presents radical-scavenging abilities, characteristics as pure hydrocarbons, and applications on the basis of the studies.

Kubo, Junichi [Nippon Oil Co. Ltd. (Japan)

1996-10-01T23:59:59.000Z

485

Heavy Petroleum Composition. 3. Asphaltene Aggregation  

Science Journals Connector (OSTI)

The ever-increasing worldwide demand for energy has led to the upgrading of heavy crude oil and asphaltene-rich feedstocks becoming viable refining options for the petroleum industry. ... fractions of heavy petroleums were examd. ... changes, introduction of miscible gases and liqs., mixing with diluents and other oils, and, during acid stimulation, hot oiling and other oilfield operations. ...

Amy M. McKenna; Lynda J. Donald; Jade E. Fitzsimmons; Priyanka Juyal; Victor Spicer; Kenneth G. Standing; Alan G. Marshall; Ryan P. Rodgers

2013-01-16T23:59:59.000Z

486

New Zealand Heavy-Water Scheme  

Science Journals Connector (OSTI)

... has decided to withdraw from participation in the Wairakei Scheme. This scheme provided for utilizing geothermal steam for the generation of electric power and for the manufacture of heavy water, ... the heavy-water plant would be much higher than was originally estimated. A company, Geothermal Development, Ltd., was formed for this purpose, and this will be wound up ...

1956-02-04T23:59:59.000Z

487

A Heavy Flavor Tracker for STAR  

SciTech Connect

We propose to construct a Heavy Flavor Tracker (HFT) for the STAR experiment at RHIC. The HFT will bring new physics capabilities to STAR and it will significantly enhance the physics capabilities of the STAR detector at central rapidities. The HFT will ensure that STAR will be able to take heavy flavor data at all luminosities attainable throughout the proposed RHIC II era.

Xu, Z.; Chen, Y.; Kleinfelder, S.; Koohi, A.; Li, S.; Huang, H.; Tai, A.; Kushpil, V.; Sumbera, M.; Colledani, C.; Dulinski, W.; Himmi,A.; Hu, C.; Shabetai, A.; Szelezniak, M.; Valin, I.; Winter, M.; Surrow,B.; Van Nieuwenhuizen, G.; Bieser, F.; Gareus, R.; Greiner, L.; Lesser,F.; Matis, H.S.; Oldenburg, M.; Ritter, H.G.; Pierpoint, L.; Retiere, F.; Rose, A.; Schweda, K.; Sichtermann, E.; Thomas, J.H.; Wieman, H.; Yamamoto, E.; Kotov, I.

2005-03-14T23:59:59.000Z

488

Research and Development Opportunities for Heavy Trucks  

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

1] 1] Introduction Heavy-duty long-haul trucks are critical to the movement of the Nation's freight. These vehicles, which currently consume about 10 percent of the Nation's oil, are characterized by high fuel consumption, fast market turnover, and rapid uptake of new technologies. Improving the fuel economy of Class 8 trucks will dramatically impact both fuel and cost savings. This paper describes the importance of heavy trucks to the Nation's economy, and its potential for fuel efficiency gains. Why Focus on Heavy Trucks? Large and Immediate Impact Investments in improving the fuel economy of heavy Class 8 trucks will result in large reduction in petroleum consumption within a short timeframe. While heavy-duty vehicles make up only 4% of the

489

Heavy photon search experiment at JLAB  

SciTech Connect

The Heavy Photon Search (HPS) experiment in Hall-B at Jefferson Lab will search for new heavy vector boson(s), aka 'heavy photons', in the mass range of 20 MeV/c{sup 2} to 1000 MeV/c{sup 2} using the scattering of high energy, high intensity electron beams off a high Z target. The proposed measurements will cover the region of parameter space favored by the muon g-2 anomaly, and will explore a significant region of parameter space, not only at large couplings (??/? > 10{sup ?7}), but also in the regions of small couplings, down to ??/??10{sup ?10}. The excellent vertexing capability of the Si-tracker uniquely enables HPS to cover the small coupling region. Also, HPS will search for heavy photons in an alternative to the e{sup +}e{sup ?} decay mode, in the heavy photon's decay to ?{sup +}??.

Stepanyan, S. [Jefferson Lab, Newport News, VA (United States); Collaboration: HPS Collaboration

2013-11-07T23:59:59.000Z

490

QCD mechanisms for heavy particle production  

SciTech Connect

For very large pair mass, the production of heavy quarks and supersymmetric particles is expected to be governed by ACD fusion subprocesses. At lower mass scales other QCD mechanisms such as prebinding distortion and intrinsic heavy particle Fock states can become important, possibly accounting for the anomalies observed for charm hadroproduction. We emphasize the importance of final-state Coulomb interactions at low relative velocity in QCD and predict the existence of heavy narrow four quark resonances (c c-bar u u-bar) and (cc c-bar c-bar) in ..gamma gamma.. reactions. Coherent QCD contributions are discussed as a contribution to the non-additivity of nuclear structure functions and heavy particle production cross sections. We also predict a new type of amplitude zero for exclusive heavy meson pair production which follows from the tree-graph structure of QCD. 35 refs., 8 figs., 1 tab.

Brodsky, S.J.

1985-09-01T23:59:59.000Z

491

Simulation of heavy ion induced electron yield at grazing incidence  

Science Journals Connector (OSTI)

We compare simulations to experiments measuring electron yield from heavy ions striking metal surfaces, in particular at grazing incidence, for 1.0 MeV potassium and 182.0 MeV gold ions striking stainless steel as measured in two recent experiments. We find the electron yield is proportional to within 3% for the potassium experiments and 13% for the gold experiments to the simulated energy deposited by the ions in a thin (?20???Ć) layer at the target surface. We discuss how nonequilibrium stopping and ion wake fields may account for the larger disagreement with the gold experiments. An analytic estimate based on specular reflection predicts the peak in simulated and measured electron yield as a function of angle to within a few percent.

P. H. Stoltz; S. Veitzer; R. Cohen; A. W. Molvik; J.-L. Vay

2004-10-12T23:59:59.000Z

492

Activation energy of hydrogen and muon in transition metals  

Science Journals Connector (OSTI)

The quantum theory of diffusion due to Flynn and Stoneham is used to calculate the activation energies of H, D, ?+, O, and N in bcc transition metals Nb, V, Ta, Mo, ?-W, and ?-Cr, and in fcc metals Pd, Ni, Cu, Ag, Au, and Al. It is found that the symmetric-mode contribution to the activation energy dominates in fcc metals while the reverse is the situation for bcc metals. The strain field produced by ?+ is found to be almost isotropic. The larger anisotropy and the volume of solution leads to large activation energy for heavy impurities. The calculated activation energies are found in good agreement with the experimental values. The variation of activation energy with the anisotropy parameter is also studied.

L. L. Dhawan and S. Prakash

1981-09-15T23:59:59.000Z

493

INDUCED BIOCHEMICAL INTERACTIONS IN IMMATURE AND BIODEGRADED HEAVY CRUDE OILS  

SciTech Connect

Studies in which selective chemical markers have been used to explore the mechanisms by which biocatalysts interact with heavy crude oils have shown that the biochemical reactions follow distinct trends. The term biocatalyst refers to a group of extremophilic microorganisms which, under the experimental conditions used, interact with heavy crude oils to (1) cause a redistribution of hydrocarbons, (2) cause chemical changes in oil fractions containing sulfur compounds and lower the sulfur content, (3) decrease organic nitrogen content, and (4) decrease the concentration of trace metals. Current data indicate that the overall effect is due to simultaneous reactions yielding products with relatively higher concentration of saturates and lower concentrations of aromatics and resins. The compositional changes depend on the microbial species and the chemistry of the crudes. Economic analysis of a potential technology based on the available data indicate that such a technology, used in a pre-refinery mode, may be cost efficient and promising. In the present paper, the background of oil biocatalysis and some recent results will be discussed.

PREMUZIC,E.T.; LIN,M.S.; BOHENEK,M.; JOSHI-TOPE,G.; SHELENKOVA,L.; ZHOU,W.M.

1998-10-27T23:59:59.000Z

494

Induced biochemical interactions in immature and biodegraded heavy crude oils  

SciTech Connect

Studies in which selective chemical markers have been used to explore the mechanisms by which biocatalysts interact with heavy crude oils have shown that the biochemical reactions follow distinct trends. The term biocatalyst refers to a group of extremophilic microorganisms which, under the experimental conditions used, interact with heavy crude oils to (1) cause a redistribution of hydrocarbons, (2) cause chemical changes in oil fractions containing sulfur compounds and lower the sulfur content, (3) decrease organic nitrogen content, and (4) decrease the concentration of trace metals. Current data indicate that the overall effect is due to simultaneous reactions yielding products with relatively higher concentration of saturates and lower concentrations of aromatics and resins. The compositional changes depend on the microbial species and the chemistry of the crudes. Economic analysis of a potential technology based on the available data indicate that such a technology, used in a pre-refinery mode, may be cost efficient and promising. In the present paper, the background of oil biocatalysis and some recent results will be discussed.

Premuzic, E.T.; Lin, M.S.; Bohenek, M.; Joshi-Tope, G.; Shelenkova, L.; Zhou, W.M.

1998-11-01T23:59:59.000Z

495

Metal-Air Batteries  

SciTech Connect

Metal-air batteries have much higher specific energies than most currently available primary and rechargeable batteries. Recent advances in electrode materials and electrolytes, as well as new designs on metal-air batteries, have attracted intensive effort in recent years, especially in the development of lithium-air batteries. The general principle in metal-air batteries will be reviewed in this chapter. The materials, preparation methods, and performances of metal-air batteries will be discussed. Two main metal-air batteries, Zn-air and Li-air batteries will be discussed in detail. Other type of metal-air batteries will also be described.

Zhang, Jiguang; Bruce, Peter G.; Zhang, Gregory

2011-08-01T23:59:59.000Z

496

Heavy Duty Vehicle Futures Analysis.  

SciTech Connect

This report describes work performed for an Early Career Research and Development project. This project developed a heavy-duty vehicle (HDV) sector model to assess the factors influencing alternative fuel and efficiency technology adoption. This model builds on a Sandia light duty vehicle sector model and provides a platform for assessing potential impacts of technological advancements developed at the Combustion Research Facility. Alternative fuel and technology adoption modeling is typically developed around a small set of scenarios. This HDV sector model segments the HDV sector and parameterizes input values, such as fuel prices, efficiencies, and vehicle costs. This parameterization enables sensitivity and trade space analyses to identify the inputs that are most associated with outputs of interest, such as diesel consumption and greenhouse gas emissions. Thus this analysis tool enables identification of the most significant HDV sector drivers that can be used to support energy security and climate change goals.

Askin, Amanda Christine; Barter, Garrett; West, Todd H.; Manley, Dawn Kataoka

2014-05-01T23:59:59.000Z

497

Heavy quark physics from SLD  

SciTech Connect

This report covers preliminary measurements from SLD on heavy quark production at the Z{sup 0}, using 150,000 hadronic Z{sup 0} decays accumulated during the 1993-1995 runs. A measurement of R{sub b} with a lifetime double tag is presented. The high electron beam polarization of the SLC is employed in the direct measurement of the parity-violating parameters A{sub b} and A{sub c} by use of the left-right forward-backward asymmetry. The lifetimes of B{sup +} and B{sup 0} mesons have been measured by two analyses. The first identifies semileptonic decays of B mesons with high (p,p{sub t}) leptons; the second analysis isolates a sample of B meson decays with a two-dimensional impact parameter tag and reconstructs the decay length and charge using a topological vertex reconstruction method.

Messner, R. [Stanford Univ., CA (United States)

1997-01-01T23:59:59.000Z

498

Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Emissions Optimization of Heavy-Duty Diesel Engines using Model-Based Transient Calibration Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel Engines using...

499

LNT + SCR Aftertreatment for Medium-Heavy Duty Applications:...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

+ SCR Aftertreatment for Medium-Heavy Duty Applications: A Systems Approach LNT + SCR Aftertreatment for Medium-Heavy Duty Applications: A Systems Approach Poster presentation at...

500

Development of SCR on Diesel Particulate Filter System for Heavy...  

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

SCR on Diesel Particulate Filter System for Heavy Duty Applications Development of SCR on Diesel Particulate Filter System for Heavy Duty Applications Evaluation of a system...