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Note: This page contains sample records for the topic "mercury levels cxs" from the National Library of EnergyBeta (NLEBeta).
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1

Wavelengths, Energy Level Classifications, and Energy Levels for the Spectrum of Neutral Mercury  

E-Print Network (OSTI)

Wavelengths, Energy Level Classifications, and Energy Levels for the Spectrum of Neutral Mercury E of neutral mercury Hg I for both the single isotope 198 Hg and for mercury in its natural isotopic abundance of neutral mercury for both 198 Hg and the natural isotopic mixture. Tabular data for 105 classified lines

Magee, Joseph W.

2

MERCURY LEVELS IN HAWAIIAN PREDATORY PEI-AGIC FISHES AND THEIR PREY ASA FUNCTION OF DEPTH AND ECOLOGY  

E-Print Network (OSTI)

MERCURY LEVELS IN HAWAIIAN PREDATORY PEI-AGIC FISHES AND THEIR PREY ASA FUNCTION OF DEPTH Gregory F,. P.av:.zza N{argaretA. N.,Icl\\{anus #12;ABSTRACT Mercury is drstributedthroughout the Earth in plants and animals. Inter- and intra-specific variations in mercury levels of predatory pelagic fish have

Luther, Douglas S.

3

Low-Cost Options for Moderate Levels of Mercury Control  

SciTech Connect

On March 15, 2005, EPA issued the Clean Air Mercury Rule, requiring phased-in reductions of mercury emissions from electric power generators. ADA-ES, Inc., with support from DOE/NETL and industry partners, is conducting evaluations of EPRI's TOXECON II{trademark} process and of high-temperature reagents and sorbents to determine the capabilities of sorbent/reagent injection, including activated carbon, for mercury control on different coals and air emissions control equipment configurations. DOE/NETL targets for total mercury removal are {ge}55% (lignite), {ge}65% (subbituminous), and {ge}80% (bituminous). Based on work done to date at various scales, meeting the removal targets appears feasible. However, work needs to progress to more thoroughly document and test these promising technologies at full scale. This is the final site report for tests conducted at MidAmerican's Louisa Station, one of three sites evaluated in this DOE/NETL program. The other two sites in the program are MidAmerican's Council Bluff Station and Entergy's Independence Station. MidAmerican's Louisa Station burns Powder River Basin (PRB) coal and employs hot-side electrostatic precipitators with flue gas conditioning for particulate control. This part of the testing program evaluated the effect of reagents used in the existing flue gas conditioning on mercury removal.

Sharon Sjostrom

2006-03-31T23:59:59.000Z

4

Low-Cost Options for Moderate Levels of Mercury Control  

SciTech Connect

This is the final technical report for a three-site project that is part of an overall program funded by the U.S. Department of Energy's National Energy Technology Laboratory (DOE/NETL) and industry partners to obtain the necessary information to assess the feasibility and costs of controlling mercury from coal-fired utility plants. This report summarizes results from tests conducted at MidAmerican's Louisa Generating Station and Entergy's Independence Steam Electric Station (ISES) and sorbent screening at MidAmerican's Council Bluffs Energy Center (CBEC) (subsequently renamed Walter Scott Energy Center (WSEC)). Detailed results for Independence and Louisa are presented in the respective Topical Reports. As no full-scale testing was conducted at CBEC, screening updates were provided in the quarterly updates to DOE. ADA-ES, Inc., with support from DOE/NETL, EPRI, and other industry partners, has conducted evaluations of EPRI's TOXECON II{trademark} process and of high-temperature reagents and sorbents to determine the capabilities of sorbent/reagent injection, including activated carbon, for mercury control on different coals and air emissions control equipment configurations. An overview of each plant configuration is presented: (1) MidAmerican's Louisa Generating Station burns Powder River Basin (PRB) coal in its 700-MW Unit 1 and employs hot-side electrostatic precipitators (ESPs) with flue gas conditioning for particulate control. This part of the testing program evaluated the effect of reagents used in the existing flue gas conditioning on mercury removal. (2) MidAmerican's Council Bluffs Energy Center typically burns PRB coal in its 88-MW Unit 2. It employs a hot-side ESP for particulate control. Solid sorbents were screened for hot-side injection. (3) Entergy's Independence Steam Electric Station typically burns PRB coal in its 880-MW Unit 2. Various sorbent injection tests were conducted on 1/8 to 1/32 of the flue gas stream either within or in front of one of four ESP boxes (SCA = 542 ft{sup 2}/kacfm), specifically ESP B. Initial mercury control evaluations indicated that although significant mercury control could be achieved by using the TOXECON II{trademark} design, the sorbent concentration required was higher than expected, possibly due to poor sorbent distribution. Subsequently, the original injection grid design was modeled and the results revealed that the sorbent distribution pattern was determined by the grid design, fluctuations in flue gas flow rates, and the structure of the ESP box. To improve sorbent distribution, the injection grid and delivery system were redesigned and the effectiveness of the redesigned system was evaluated. This project was funded through the DOE/NETL Innovations for Existing Plants program. It was a Phase II project with the goal of developing mercury control technologies that can achieve 50-70% mercury capture at costs 25-50% less than baseline estimates of $50,000-$70,000/lb of mercury removed. Results from testing at Independence indicate that the DOE goal was successfully achieved. Further improvements in the process are recommended, however. Results from testing at Louisa indicate that the DOE goal was not achievable using the tested high-temperature sorbent. Sorbent screening at Council Bluffs also indicated that traditional solid sorbents may not achieve significant mercury removal in hot-side applications.

Sharon Sjostrom

2008-02-09T23:59:59.000Z

5

Achieving very low mercury levels in refinery wastewater by membrane filtration.  

SciTech Connect

Microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) membranes were evaluated for their ability to achieve the world's most stringent Hg discharge criterion (<1.3 ng/L) in an oil refinery's wastewater. The membrane processes were operated at three different pressures to demonstrate the potential for each membrane technology to achieve the targeted effluent mercury concentrations. The presence of mercury in the particulate form in the refinery wastewater makes the use of MF and UF membrane technologies more attractive in achieving very low mercury levels in the treated wastewater. Both NF and RO were also able to meet the target mercury concentration at lower operating pressures (20.7 bar). However, higher operating pressures ({ge}34.5 bar) had a significant effect on NF and RO flux and fouling rates, as well as on permeate quality. SEM images of the membranes showed that pore blockage and narrowing were the dominant fouling mechanisms for the MF membrane while surface coverage was the dominant fouling mechanism for the other membranes. The correlation between mercury concentration and particle size distribution was also investigated to understand mercury removal mechanisms by membrane filtration. The mean particle diameter decreased with filtration from 1.1 {+-} 0.0 {micro}m to 0.74 {+-} 0.2 {micro}m after UF.

Urgun Demirtas, M.; Benda, P.; Gillenwater, P. S.; Negri, M. C.; Xiong, H.; Snyder, S. W. (Center for Nanoscale Materials); ( ES)

2012-05-15T23:59:59.000Z

6

Mercury level in fish caught in Indian River Lagoon higher than it should be?  

E-Print Network (OSTI)

Mercury level in fish caught in Indian River Lagoon higher than it should be? Harbor Branch launches new study of humans who eat fish and live around the estuary By Scott Wyland Tuesday, May 22, 2012 INDIAN RIVER COUNTY -- A 20-year-old man fishes local waters every day for his meals and scoffs

Belogay, Eugene A.

7

A Meta-analysis of Mercury Levels in Lavaca Bay Texas  

E-Print Network (OSTI)

A META-ANALYSIS OF MERCURY LEVELS IN LAVACA BAY TEXAS A Thesis by MARIA C. PILLADO Submitted to the Office of Graduate and Professional Studies of Texas A&M University and the Graduate Faculty of The Texas A&M University Corpus... Subject: Marine Biology Copyright 2014 Maria C. Pillado ...

Pillado, Cecilia Maria

2014-05-07T23:59:59.000Z

8

Total mercury levels in hair, toenail, and urine among women free from occupational exposure and their relations to renal tubular function  

SciTech Connect

To investigate the relations among total mercury levels in hair, toenail, and urine, together with potential effects of methylmercury intake on renal tubular function, we determined their levels, and urinary N-acetyl-{beta}-d-glucosaminidase activity (NAG) and {alpha}{sub 1}-microglobulin (AMG) in 59 women free from occupational exposures, and estimated daily mercury intakes from fish and other seafood using a food frequency questionnaire. Mercury levels (mean+/-SD) in the women were 1.51+/-0.91{mu}g/g in hair, 0.59+/-0.32{mu}g/g in toenail, and 0.86+/-0.66{mu}g/g creatinine in urine; and, there were positive correlations among them (P<0.001). The daily mercury intake of 9.15+/-7.84{mu}g/day was significantly correlated with total mercury levels in hair, toenail, and urine (r=0.551, 0.537, and 0.604, P<0.001). Among the women, the NAG and AMG were positively correlated with both the daily mercury intake and mercury levels in hair, toenail, and urine (P<0.01); and, these relations were almost similar when using multiple regression analysis to adjust for possible confounders such as urinary cadmium (0.47+/-0.28{mu}g/g creatinine) and smoking status. In conclusion, mercury resulting from fish consumption can explain total mercury levels in hair, toenail, and urine to some degree (about 30%), partly through the degradation into the inorganic form, and it may confound the renal tubular effect of other nephrotoxic agents. Also, the following equation may be applicable to the population neither with dental amalgam fillings nor with occupational exposures: [hair mercury ({mu}g/g)]=2.44x[toenail mercury ({mu}g/g)].

Ohno, Tomoko [Department of Environmental Health Sciences, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543 (Japan); Sakamoto, Mineshi [Department of Epidemiology, National Institute for Minamata Disease, Minamata 867-0008 (Japan); Kurosawa, Tomoko [Department of Environmental Health Sciences, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543 (Japan); Dakeishi, Miwako [Department of Environmental Health Sciences, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543 (Japan); Iwata, Toyoto [Department of Environmental Health Sciences, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543 (Japan); Murata, Katsuyuki [Department of Environmental Health Sciences, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543 (Japan)]. E-mail: winestem@med.akita-u.ac.jp

2007-02-15T23:59:59.000Z

9

Correlations Between Gene Expression and Mercury Levels in Blood of Boys With and Without Autism  

E-Print Network (OSTI)

Molecular markers of heavy metal toxicitya new paradigm for2006). Mercury is a toxic and hazardous heavy metal that is

2011-01-01T23:59:59.000Z

10

Investigation of increased mercury levels in the fisheries of Lower East Fork Poplar Creek (Lefpc), Oak Ridge Reservation, Tennessee  

SciTech Connect

The DOE Western Environmental Technology Office (WETO) is supporting remediation efforts on the U.S. Department of Energy Oak Ridge Reservation in Oak Ridge, Tennessee by performing this study. MSE Technology Applications, Inc. (MSE) has performed a series of literature reviews and bench-scale testing to further evaluate the mercury problem in the Lower East Fork Poplar Creek (LEFPC) at Oak Ridge. The primary problem is that total mercury (HgT) levels in LEFPC water decrease, while HgT levels in sunfish muscle tissue increase, with distance away from the National Security Complex (NSC), despite extensive source control efforts at the facility and within downstream riparian zones. Furthermore, dissolved methylmercury (d-MeHg) levels increase downstream from the NSC, especially during warm weather and/or high flow events. MSE performed four test series that focused on conversion of aqueous phase elemental mercury (Hg deg. A) to methyl mercury (MeHg) by algal-bacterial bio-films (periphyton) present in the stream-bed of LEFPC. Small (mg/L) quantities of un-sulphured molasses and peptone were added to some of the Hinds Creek samples to stimulate initial bacterial growth. Other Hinds Creek samples either were dosed with glutaraldehyde to preclude microbial growth, or were wrapped in aluminum foil to preclude Hg photochemical redox effects. The bench-scale testing for Phase II was completed August 2006. The final reporting and the planning for Phase III testing are in progress. (authors)

Byrne-Kelly, D.; Cornish, J.; Hart, A. [MSE Technology Applications, Inc., 200 Technology Way, Butte, MT (United States); Southworth, G. [Oak Ridge National Laboratory, Oak Ridge, TN (United States); Sims, L. [Bechtel Jacobs Company, Oak Ridge, TN (United States)

2007-07-01T23:59:59.000Z

11

Investigation of Increased Mercury Levels in the Fisheries of Lower East Fork Poplar Creek (LEFPC), Oak Ridge Reservation, Tennessee  

SciTech Connect

The DOE Western Environmental Technology Office (WETO) is supporting Oak Ridge's remediation efforts by performing this study. MSE Technology Applications, Inc. (MSE) has performed a series of literature reviews and bench-scale testing to further evaluate the mercury problem in the Lower East Fork Poplar Creek (LEFPC) at Oak Ridge. The primary problem is that total mercury (HgT) levels in LEFPC water decrease, while HgT levels in sunfish muscle tissue increase, with distance away from the National Security Complex (NSC), despite extensive source control efforts at the facility. Furthermore, dissolved methylmercury (d-MeHg) levels increase downstream from the NSC, especially during warm weather and/or high flow events. MSE performed four test series that focused on conversion of dissolved and colloidal forms of elemental mercury (Hg deg.A) to methyl mercury (MeHg) by algal-bacterial bio-films (periphyton) present in the stream-bed of LEFPC; MeHg production by these bio-films under anoxic versus oxic conditions was the critical measurement taken. The bench-scale testing for Phase I was completed November 2005. The final reporting and the planning for Phase II testing are in progress. (authors)

Byrne-Kelly, D.; Cornish, J.; Hart, A. [MSE Technology Applications, Inc., (United States); Southworth, G. [Oak Ridge National Laboratory (United States); Simms, L. [Bechtel Jacobs Company (United States)

2006-07-01T23:59:59.000Z

12

Mercury and Fish  

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

Mercury and Fish Mercury and Fish Name: donna Location: N/A Country: N/A Date: N/A Question: how does mercury get into fish in rivers. what is the ecological process involved which could produce toxic levels of mercury in fish and eventually get into humans? Replies: Hi Donna! Nowadays mercury or its compounds are used at a high scale in many industries as the manufacture of chemicals, paints, household itens, pesticides and fungicides. These products can contaminate humans (and mamals) by direct contact, ingestion or inhalation. Besides the air can become contaminated also, and since mercury compounds produce harmful effects in body tissues and functions, that pollution is very dangerous. Now for your question: Efluent wastes containing mercury in various forms sometimes are dropped in sea water or in rivers or lakes. There the mercury may be converted by bacteria, that are in the muddy sediments, into organic mercurial compounds particularly the highly toxic alkyl mercurials ( methyl and di-methyl mercury), which may in turn be concentrated by the fishes and other aquatic forms of life that are used as food by men. The fishes dont seem to be affected but they are able to concentrate mercury in high poisoning levels, and if human beings, mamals or birds eat these containing mercury fishes, algae, crabs or oysters they will be contaminated and poisoned.

13

Bioaccumulation of Mercury in Sharks  

E-Print Network (OSTI)

Bioaccumulation of Mercury in Sharks Part 2 a Using a subset of data collected on RJD shark research trips, you will analyze the mercury levels found in the Florida Sharks we catch. Based on your analysis, you will be able to conclude which species have the highest levels of mercury contamination

Miami, University of

14

Bioaccumulation of Mercury in Sharks  

E-Print Network (OSTI)

Resources: EPA General Info on Mercury - http://www.epa.gov/mercury/about.htm FDA Mercury Levels in Seafood - http://www.fda.gov/Food/GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/ Seafood/ucm092041/en/index.html Monterey Bay Aquarium Sustainable Seafood Guide - http://www.montereybayaquarium.org/cr/Seafood

Miami, University of

15

DOE Mercury Control Research  

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

Mercury Control Research Mercury Control Research Air Quality III: Mercury, Trace Elements, and Particulate Matter September 9-12, 2002 Rita A. Bajura, Director National Energy Technology Laboratory www.netl.doe.gov 169330 RAB 09/09/02 2 Potential Mercury Regulations MACT Standards * Likely high levels of Hg reduction * Compliance: 2007 Clean Power Act of 2001 * 4-contaminant control * 90% Hg reduction by 2007 Clear Skies Act of 2002 * 3-contaminant control * 46% Hg reduction by 2010 * 70% Hg reduction by 2018 * Hg emission trading President Bush Announcing Clear Skies Initiative February 14, 2002 169330 RAB 09/09/02 3 Uncertainties Mercury Control Technologies * Balance-of-plant impacts * By-product use and disposal * Capture effectiveness with low-rank coals * Confidence of performance 169330 RAB 09/09/02 4

16

Mercury, cadmium, lead and arsenic levels in three pelagic fish species from the Atlantic Ocean: Intra- and inter-specific variability and human health risks for consumption  

Science Journals Connector (OSTI)

Three commonly consumed and commercially valuable fish species (sardine, chub and horse mackerel) were collected from the Northeast and Eastern Central Atlantic Ocean in Portuguese waters during one year. Mercury, cadmium, lead and arsenic amounts were determined in muscles using graphite furnace and cold vapour atomic absorption spectrometry. Maximum mean levels of mercury (0.17150.0857mg/kg, ww) and arsenic (1.1390.350mg/kg, ww) were detected in horse mackerel. The higher mean amounts of cadmium (0.00840.0036mg/kg, ww) and lead (0.03790.0303mg/kg, ww) were determined in chub mackerel and in sardine, respectively. Intra- and inter-specific variability of metals bioaccumulation was statistically assessed and species and length revealed to be the major influencing biometric factors, in particular for mercury and arsenic. Muscles present metal concentrations below the tolerable limits considered by European Commission Regulation and Food and Agriculture Organization of the United Nations/World Health Organization (FAO/WHO). However, estimation of non-carcinogenic and carcinogenic health risks by the target hazard quotient and target carcinogenic risk, established by the US Environmental Protection Agency, suggests that these species must be eaten in moderation due to possible hazard and carcinogenic risks derived from arsenic (in all analyzed species) and mercury ingestion (in horse and chub mackerel species).

C. Vieira; S. Morais; S. Ramos; C. Delerue-Matos; M.B.P.P. Oliveira

2011-01-01T23:59:59.000Z

17

Levels of mercury in scalp hair of fishermen and their families from Camara de Lobos-Madeira (Portugal): A preliminary study  

SciTech Connect

Mercury is probably one of the most investigated natural and anthropogenic contaminants, especially in aquatic environments. Among the inorganic forms, elemental mercury (HgO) presents a marked tendency to reach the air as vapor, and in terrestrial systems to bioaccumulate in plant biomass, whereas other inorganic compounds (e.g., mercury sulphide) are characterized by low mobility and bioavailability. These last compounds once in water (and especially at the water-sediment interface) can undergo a process of methylation. Methylmercury (MeHg) is readily bioaccumulated by aquatic organisms and leads to a phenomenon of enrichment from lower to higher trophic level. The extensive literature on MeHg and human health shows that the consumption of fish and/or shellfish is the main source of exposure, the contribution from air and water being negligible and mainly related to inorganic forms. A human population consuming large amounts of seafood with high MeHg levels can be considered at risk when consumption exceeds a certain amount. This level has been set by the WHO and other agencies, at 300 {mu}g/week of total mercury (totHg) of which there should be no more than 200 {mu}g as MeHg. The nervous system is the principal target of the effects of MeHg in humans. The most common functions affected are the sensory, visual and auditory functions, together with those of the cerebellum, which is concerned with coordination. As far as prenatal exposure is concerned, the developing central nervous system of humans and animals has been found to be more sensitive to damage from MeHg than the adult nervous system. This preliminary study obtains and examines information about eating habits and general health of a group of fisherman and their families living in a fishing village, at high risk because of the high frequency of seafood in their normal diet. 17 refs., 1 fig., 1 tab.

Gaggi, C.; Zino, F.; Duccini, M.; Renzoni, A. [Universita di Siena (Italy)] [Universita di Siena (Italy)

1996-12-31T23:59:59.000Z

18

Groundwater Discharge of Mercury to California Coastal Waters  

E-Print Network (OSTI)

leading to levels in some seafood that can be dangerous ifis all the mercury in seafood coming from? says Russell

Flegal, Russell; Paytan, Adina; Black, Frank

2009-01-01T23:59:59.000Z

19

Mercury Thermometer Replacement Alternatives Thermometer Description Non-Mercury Non-Mercury Non-Mercury  

E-Print Network (OSTI)

Mercury Thermometer Replacement Alternatives Length Thermometer Description Non-Mercury Non-Mercury Non-Mercury Range / Division VWR-Enviro-Safe® Fisherbrand® Brooklyn Thermometer Company Inc. Total/A #12;Mercury Thermometer Replacement Alternatives Length Thermometer Description Non-Mercury Non

20

MERCURY EXCESS  

Science Journals Connector (OSTI)

Congress and EPA probe possibility of long-term STORAGE of liquid metal CHERYL HOGUE, C&EN WASHINGTON ... Hazardous waste handlers keep mercury from polluting the environment by reclaiming the liquid metal from scrap electrical switches, thermometers, and fluorescent light bulbs. ...

2007-07-02T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Process for removing mercury from aqueous solutions  

DOE Patents (OSTI)

A process for removing mercury from water to a level not greater than two parts per billion wherein an anion exchange material that is insoluble in water is contacted first with a sulfide containing compound and second with a compound containing a bivalent metal ion forming an insoluble metal sulfide. To this treated exchange material is contacted water containing mercury. The water containing not more than two parts per billion of mercury is separated from the exchange material.

Googin, John M. (Oak Ridge, TN); Napier, John M. (Oak Ridge, TN); Makarewicz, Mark A. (Knoxville, TN); Meredith, Paul F. (Knoxville, TN)

1986-01-01T23:59:59.000Z

22

Process for removing mercury from aqueous solutions  

DOE Patents (OSTI)

A process for removing mercury from water to a level not greater than two parts per billion wherein an anion exchange material that is insoluble in water is contacted first with a sulfide containing compound and second with a compound containing a bivalent metal ion forming an insoluble metal sulfide. To this treated exchange material is contacted water containing mercury. The water containing not more than two parts per billion of mercury is separated from the exchange material.

Googin, J.M.; Napier, J.M.; Makarewicz, M.A.; Meredith, P.F.

1985-03-04T23:59:59.000Z

23

Mercury control in 2009  

SciTech Connect

Although activated carbon injection (ACI) has been proven to be effective for many configurations and is a preferred option at many plants sufficient quantities of powdered activated coking (PAC) must be available to meet future needs. The authors estimate that upcoming federal and state regulations will result in tripling the annual US demand for activated carbon to nearly 1.5 billion lb from approximately 450 million lb. Rapid expansion of US production capacity is required. Many PAC manufacturers are discussing expansion of their existing production capabilities. One company, ADA Carbon Solutions, is in the process of constructing the largest activated carbon facility in North America to meet the future demand for PAC as a sorbent for mercury control. Emission control technology development and commercialization is driven by regulation and legislation. Although ACI will not achieve > 90% mercury control at every plant, the expected required MACT legislation level, it offers promise as a low-cost primary mercury control technology option for many configurations and an important trim technology for others. ACI has emerged as the clear mercury-specific control option of choice, representing over 98% of the commercial mercury control system orders to date. As state regulations are implemented and the potential for a federal rule becomes more imminent, suppliers are continuing to develop technologies to improve the cost effectiveness and limit the balance of plant impacts associated with ACI and are developing additional PAC production capabilities to ensure that the industry's needs are met. The commercialisation of ACI is a clear example of industry, through the dedication of many individuals and companies with support from the DOE and EPRI, meeting the challenge of developing cost-effectively reducing emissions from coal-fired power plants. 7 refs., 1 fig.

Sjostrom, S.; Durham, M.; Bustard, J.; Martin, C. [ADA Environmental Solutions, Littleton, CO (United States)

2009-07-15T23:59:59.000Z

24

Probing Mercury's Partnering Preferences  

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

Preferences Probing Mercury's Partnering Preferences Merc.gif Why it Matters: Mercury (Hg) is a major global pollutant arising from both natural and anthropogenic sources....

25

Mercury warning given to north state anglers By Ryan Sabalow  

E-Print Network (OSTI)

Mercury warning given to north state anglers By Ryan Sabalow Monday, June 7, 2010 A new study the highest levels of mercury contamination in the state. Although anglers arent being warned to wean,905 fish in 272 of Californias popular lakes and reservoirs for mercury, PCBs, DDT and other contaminants

26

Mercury contamination extraction  

DOE Patents (OSTI)

Mercury is removed from contaminated waste by firstly applying a sulfur reagent to the waste. Mercury in the waste is then permitted to migrate to the reagent and is stabilized in a mercury sulfide compound. The stable compound may then be removed from the waste which itself remains in situ following mercury removal therefrom.

Fuhrmann, Mark (Silver Spring, MD); Heiser, John (Bayport, NY); Kalb, Paul (Wading River, NY)

2009-09-15T23:59:59.000Z

27

NETL: Mercury Emissions Control Technologies - Mercury Control For Plants  

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

Mercury Control For Plants Firing Texas Lignite and Equipped with ESP-wet FGD Mercury Control For Plants Firing Texas Lignite and Equipped with ESP-wet FGD URS Group, Inc., in collaboration with EPRI, Apogee Scientific, AEP, Texas Genco, and TXU Power, ADA-ES, will evaluate sorbent injection for mercury control in an 85/15 blend Texas lignite/PRB derived flue gas, upstream of a cold-side ESP – wet FGD combination. Full-scale sorbent injection tests conducted with various sorbents and combinations of fuel and plant air pollution control devices (APCD) have provided a good understanding of variables that affect sorbent performance. However, many uncertainties exist regarding long-term performance and data gaps remain for specific plant configurations. For example, sorbent injection has not been demonstrated at full-scale for plants firing Texas lignite, which represent approximately 10% of the annual U.S. power plant mercury emissions. The low and variable chloride content of Texas lignite may pose a challenge to achieving high levels of mercury removal with sorbent injection. Furthermore, activated carbon injection may render the fly ash unsuitable for sale, posing an economic liability to Texas lignite utilities. Alternatives to standard activated carbon, such as non-carbon sorbents and alternate injection locations (Toxecon II), have not been fully explored. Toxecon II involves sorbent injection in the middle field(s) of an ESP, thus preserving the integrity of the fly ash in the first fields.

28

Mercury Continuous Emmission Monitor Calibration  

SciTech Connect

Mercury continuous emissions monitoring systems (CEMs) are being implemented in over 800 coal-fired power plant stacks throughput the U.S. Western Research Institute (WRI) is working closely with the Electric Power Research Institute (EPRI), the National Institute of Standards and Technology (NIST), and the Environmental Protection Agency (EPA) to facilitate the development of the experimental criteria for a NIST traceability protocol for dynamic elemental mercury vapor calibrators/generators. These devices are used to calibrate mercury CEMs at power plant sites. The Clean Air Mercury Rule (CAMR) which was published in the Federal Register on May 18, 2005 and vacated by a Federal appeals court in early 2008 required that calibration be performed with NIST-traceable standards. Despite the vacature, mercury emissions regulations in the future will require NIST traceable calibration standards, and EPA does not want to interrupt the effort towards developing NIST traceability protocols. The traceability procedures will be defined by EPA. An initial draft traceability protocol was issued by EPA in May 2007 for comment. In August 2007, EPA issued a conceptual interim traceability protocol for elemental mercury calibrators. The protocol is based on the actual analysis of the output of each calibration unit at several concentration levels ranging initially from about 2-40 {micro}g/m{sup 3} elemental mercury, and in the future down to 0.2 {micro}g/m{sup 3}, and this analysis will be directly traceable to analyses by NIST. The EPA traceability protocol document is divided into two separate sections. The first deals with the qualification of calibrator models by the vendors for use in mercury CEM calibration. The second describes the procedure that the vendors must use to certify the calibrators that meet the qualification specifications. The NIST traceable certification is performance based, traceable to analysis using isotope dilution inductively coupled plasma/mass spectrometry (ID/ICP/MS) performed by NIST in Gaithersburg, MD. The outputs of mercury calibrators are compared to one another using a nesting procedure which allows direct comparison of one calibrator with another at specific concentrations and eliminates analyzer variability effects. The qualification portion of the EPA interim traceability protocol requires the vendors to define calibrator performance as affected by variables such as pressure, temperature, line voltage, and shipping. In 2007 WRI developed and conducted a series of simplified qualification experiments to determine actual calibrator performance related to the variables defined in the qualification portion of the interim protocol.

John Schabron; Eric Kalberer; Ryan Boysen; William Schuster; Joseph Rovani

2009-03-12T23:59:59.000Z

29

FY09 assessment of mercury reduction at SNL/NM.  

SciTech Connect

This assessment takes the result of the FY08 performance target baseline of mercury at Sandia National Laboratories/New Mexico, and records the steps taken in FY09 to collect additional data, encourage the voluntary reduction of mercury, and measure success. Elemental (metallic) mercury and all of its compounds are toxic, and exposure to excessive levels can permanently damage or fatally injure the brain and kidneys. Elemental mercury can also be absorbed through the skin and cause allergic reactions. Ingestion of inorganic mercury compounds can cause severe renal and gastrointestinal damage. Organic compounds of mercury such as methyl mercury, created when elemental mercury enters the environment, are considered the most toxic forms of the element. Exposures to very small amounts of these compounds can result in devastating neurological damage and death.1 SNL/NM is required to report annually on the site wide inventory of mercury for the Environmental Protection Agency's (EPA) Toxics Release Inventory (TRI) Program, as the site's inventory is excess of the ten pound reportable threshold quantity. In the fiscal year 2008 (FY08) Pollution Prevention Program Plan, Section 5.3 Reduction of Environmental Releases, a performance target stated was to establish a baseline of mercury, its principle uses, and annual quantity or inventory. This was accomplished on July 29, 2008 by recording the current status of mercury in the Chemical Information System (CIS).

McCord, Samuel Adam

2010-02-01T23:59:59.000Z

30

Traces of mercury surprise water officials By Mark Noack [ mark@hmbreview.com  

E-Print Network (OSTI)

Print Page Traces of mercury surprise water officials By Mark Noack [ mark of high mercury levels in fish found in Crystal Springs Reservoir -- an important water source, the test suggested the Crystal Springs fish population had one of the highest mercury levels in the state

31

Phytoremediation of Ionic and Methyl Mercury P  

SciTech Connect

Our long-term goal is to enable highly productive plant species to extract, resist, detoxify, and/or sequester toxic heavy metal pollutants as an environmentally friendly alternative to physical remediation methods. We have focused this phytoremediation research on soil and water-borne ionic and methylmercury. Mercury pollution is a serious world-wide problem affecting the health of human and wild-life populations. Methylmercury, produced by native bacteria at mercury-contaminated wetland sites, is a particularly serious problem due to its extreme toxicity and efficient biomagnification in the food chain. We engineered several plant species (e.g., Arabidopsis, tobacco, canola, yellow poplar, rice) to express the bacterial genes, merB and/or merA, under the control of plant regulatory sequences. These transgenic plants acquired remarkable properties for mercury remediation. (1) Transgenic plants expressing merB (organomercury lyase) extract methylmercury from their growth substrate and degrade it to less toxic ionic mercury. They grow on concentrations of methylmercury that kill normal plants and accumulate low levels of ionic mercury. (2) Transgenic plants expressing merA (mercuric ion reductase) extract and electrochemically reduce toxic, reactive ionic mercury to much less toxic and volatile metallic mercury. This metal transformation is driven by the powerful photosynthetic reducing capacity of higher plants that generates excess NADPH using solar energy. MerA plants grow vigorously on levels of ionic mercury that kill control plants. Plants expressing both merB and merA degrade high levels of methylmercury and volatilize metallic mercury. These properties were shown to be genetically stable for several generations in the two plant species examined. Our work demonstrates that native trees, shrubs, and grasses can be engineered to remediate the most abundant toxic mercury pollutants. Building on these data our working hypothesis for the next grant period is that transgenic plants expressing the bacterial merB and merA genes will (a) remove mercury from polluted soil and water and (b) prevent methylmercury from entering the food chain. Our specific aims center on understanding the mechanisms by which plants process the various forms of mercury and volatilize or transpire mercury vapor. This information will allow us to improve the design of our current phytoremediation strategies. As an alternative to volatilizing mercury, we are using several new genes to construct plants that will hyperaccumulate mercury in above-ground tissues for later harvest. The Department of Energy's Oak Ridge National Laboratory and Brookhaven National Laboratory have sites with significant levels of mercury contamination that could be cleaned by applying the scientific discoveries and new phytoremediation technologies described in this proposal. The knowledge and expertise gained by engineering plants to hyperaccumulate mercury can be applied to the remediation of other heavy metals pollutants (e.g., arsenic, cesium, cadmium, chromium, lead, strontium, technetium, uranium) found at several DOE facilities.

Meagher, Richard B.

1999-06-01T23:59:59.000Z

32

Source-attribution for atmospheric mercury deposition: Where does the mercury in mercury deposition come from?  

E-Print Network (OSTI)

1 Source-attribution for atmospheric mercury deposition: Where does the mercury in mercury of the Mercury Working Group, Office of Air Quality, Indiana Department of Environmental Management (IDEM) April 21, 2005 #12;2 For mercury, how important is atmospheric deposition relative to other loading

33

Mercury Calibration System  

SciTech Connect

U.S. Environmental Protection Agency (EPA) Performance Specification 12 in the Clean Air Mercury Rule (CAMR) states that a mercury CEM must be calibrated with National Institute for Standards and Technology (NIST)-traceable standards. In early 2009, a NIST traceable standard for elemental mercury CEM calibration still does not exist. Despite the vacature of CAMR by a Federal appeals court in early 2008, a NIST traceable standard is still needed for whatever regulation is implemented in the future. Thermo Fisher is a major vendor providing complete integrated mercury continuous emissions monitoring (CEM) systems to the industry. WRI is participating with EPA, EPRI, NIST, and Thermo Fisher towards the development of the criteria that will be used in the traceability protocols to be issued by EPA. An initial draft of an elemental mercury calibration traceability protocol was distributed for comment to the participating research groups and vendors on a limited basis in early May 2007. In August 2007, EPA issued an interim traceability protocol for elemental mercury calibrators. Various working drafts of the new interim traceability protocols were distributed in late 2008 and early 2009 to participants in the Mercury Standards Working Committee project. The protocols include sections on qualification and certification. The qualification section describes in general terms tests that must be conducted by the calibrator vendors to demonstrate that their calibration equipment meets the minimum requirements to be established by EPA for use in CAMR monitoring. Variables to be examined include linearity, ambient temperature, back pressure, ambient pressure, line voltage, and effects of shipping. None of the procedures were described in detail in the draft interim documents; however they describe what EPA would like to eventually develop. WRI is providing the data and results to EPA for use in developing revised experimental procedures and realistic acceptance criteria based on actual capabilities of the current calibration technology. As part of the current effort, WRI worked with Thermo Fisher elemental mercury calibrator units to conduct qualification experiments to demonstrate their performance characteristics under a variety of conditions and to demonstrate that they qualify for use in the CEM calibration program. Monitoring of speciated mercury is another concern of this research. The mercury emissions from coal-fired power plants are comprised of both elemental and oxidized mercury. Current CEM analyzers are designed to measure elemental mercury only. Oxidized mercury must first be converted to elemental mercury prior to entering the analyzer inlet in order to be measured. CEM systems must demonstrate the ability to measure both elemental and oxidized mercury. This requires the use of oxidized mercury generators with an efficient conversion of the oxidized mercury to elemental mercury. There are currently two basic types of mercuric chloride (HgCl{sub 2}) generators used for this purpose. One is an evaporative HgCl{sub 2} generator, which produces gas standards of known concentration by vaporization of aqueous HgCl{sub 2} solutions and quantitative mixing with a diluent carrier gas. The other is a device that converts the output from an elemental Hg generator to HgCl{sub 2} by means of a chemical reaction with chlorine gas. The Thermo Fisher oxidizer system involves reaction of elemental mercury vapor with chlorine gas at an elevated temperature. The draft interim protocol for oxidized mercury units involving reaction with chlorine gas requires the vendors to demonstrate high efficiency of oxidation of an elemental mercury stream from an elemental mercury vapor generator. The Thermo Fisher oxidizer unit is designed to operate at the power plant stack at the probe outlet. Following oxidation of elemental mercury from reaction with chlorine gas, a high temperature module reduces the mercuric chloride back to elemental mercury. WRI conducted work with a custom laboratory configured stand-alone oxidized mercury generator unit prov

John Schabron; Eric Kalberer; Joseph Rovani; Mark Sanderson; Ryan Boysen; William Schuster

2009-03-11T23:59:59.000Z

34

Mercury Detection with Gold Nanoparticles  

E-Print Network (OSTI)

R. J. Warmack, Detection of mercury vapor using resonatingA surface acoustic wave mercury vapor sensor, Ieee Trans.N. E. Selin, Integrating mercury science and policy in the

Crosby, Jeffrey

2013-01-01T23:59:59.000Z

35

Process for low mercury coal  

DOE Patents (OSTI)

A process for producing low mercury coal during precombustion procedures by releasing mercury through discriminating mild heating that minimizes other burdensome constituents. Said mercury is recovered from the overhead gases by selective removal.

Merriam, Norman W. (Laramie, WY); Grimes, R. William (Laramie, WY); Tweed, Robert E. (Laramie, WY)

1995-01-01T23:59:59.000Z

36

Process for low mercury coal  

DOE Patents (OSTI)

A process is described for producing low mercury coal during precombustion procedures by releasing mercury through discriminating mild heating that minimizes other burdensome constituents. Said mercury is recovered from the overhead gases by selective removal. 4 figures.

Merriam, N.W.; Grimes, R.W.; Tweed, R.E.

1995-04-04T23:59:59.000Z

37

Oxidation of Mercury in Products of Coal Combustion  

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

Heng Ban Heng Ban Principal Investigator University of Alabama at Birmingham 1150 10th Avenue South Birmingham, AL 35294-4461 205-934-0011 hban@uab.edu Environmental and Water Resources OxidatiOn Of Mercury in PrOducts Of cOal cOMbustiOn Background The 2005 Clean Air Mercury Rule will require significant reductions in mercury emissions from coal-fired power plants. A variety of mercury reduction technologies are under commercial development, but an improved understanding of the fundamental chemical mechanisms that control the transformations and capture of mercury in boilers and pollution control devices is required to achieve necessary performance and cost reduction levels. Oxidized mercury is more easily captured by pollution control devices, such as Selective

38

Mercury Speciation in Piscivorous Fish from Mining-impacted Reservoirs  

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

Mercury Speciation in Piscivorous Mercury Speciation in Piscivorous Fish from Mining-impacted Reservoirs Mercury toxicity generates environmental concerns in diverse aquatic systems because methylmercury enters the water column in diverse ways then biomagnifies through food webs. At the apex of many freshwater food webs, piscivorous fish can then extend that trophic transfer and potential for neurotoxicity to wildlife and humans. Mining activities, particularly those associated with the San Francisco Bay region, can generate both point and non-point mercury sources. Replicate XANES analyses on largemouth bass and hybrid striped bass from Guadalupe Reservoir (GUA), California and Lahontan Reservoir (LAH), Nevada, were performed to determine predominant chemical species of mercury accumulated by high-trophic-level piscivores that are exposed to elevated mercury in both solution and particulate phases in the water column.

39

Mercury Chamber Considerations  

E-Print Network (OSTI)

Mercury Chamber Considerations V. Graves IDS-NF Target Studies July 2011 #12;2 Managed by UT-Battelle for the U.S. Department of Energy Mercury Chamber Considerations, July 2011 Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment

McDonald, Kirk

40

Decreasing aqueous mercury concentrations to achieve safe levels in fish: examining the water-fish relationship in two point-source contaminated streams  

SciTech Connect

East Fork Poplar Creek (EFPC) and White Oak Creek (WOC) are two mercury-contaminated streams located on the Department of Energy s Oak Ridge Reservation in east Tennessee. East Fork Poplar Creek is the larger and more contaminated of the two, with average aqueous mercury (Hg) concentrations exceeding those in reference streams by several hundred-fold. Remedial actions over the past 20 years have decreased aqueous Hg concentrations in EFPC by 85 %. Fish fillet concentrations, however, have not responded to this decrease in aqueous Hg and remain above the U.S. Environmental Protection Agency s ambient water quality criterion (AWQC) of 0.3 mg/kg. The lack of correlation between aqueous and fish tissue Hg concentrations in this creek has led to questions regarding the usefulness of target aqueous Hg concentrations and strategies for future remediation efforts. White Oak Creek has a similar contamination history but aqueous Hg concentrations in WOC are an order of magnitude lower than in EFPC. Despite the lower aqueous Hg concentrations, fish fillet concentrations in WOC have also been above the AWQC, making the most recent aqueous Hg target of 200 ng/L in EFPC seem unlikely to result in an effective decrease in fillet Hg concentrations. Recent monitoring efforts in WOC, however, suggest an aqueous total Hg threshold above which Hg bioaccumulation in fish may not respond. This new information could be useful in guiding remedial actions in EFPC and in other point-source contaminated streams.

Mathews, Teresa J [ORNL; Southworth, George R [ORNL; Peterson, Mark J [ORNL; Roy, W Kelly [ORNL; Ketelle, Richard H [ORNL; Valentine, Charles S [ORNL; Gregory, Scott M [ORNL

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Mercury and Sulfur Dynamics in the SPRUCE Experiment Brandy Toner1  

E-Print Network (OSTI)

Mercury and Sulfur Dynamics in the SPRUCE Experiment Brandy Toner1 , Randy Kolka2 , Steve Sebestyen will lead studies assessing the influence of SPRUCE treatments on the cycling of THg, MeHg and S. Mercury. Mercury levels are determined by complex interactions between deposition, chemical transformation

42

Generalized Mercury/Waterfilling for Multiple-Input Multiple-Output Channels  

E-Print Network (OSTI)

Generalized Mercury/Waterfilling for Multiple-Input Multiple-Output Channels Fernando P procedure that generalizes the mercury/waterfilling algorithm, previously proposed for parallel non-interfering chan- nels. In this generalization the mercury level accounts for the sub- optimal (non-Gaussian) input

Verdú, Sergio

43

MERCURY IN FISH AND SHELLFISH OF THE NORTHEAST PACIFIC. II. SABLEFISH, ANOPLOPOMA FIMBRIA  

E-Print Network (OSTI)

MERCURY IN FISH AND SHELLFISH OF THE NORTHEAST PACIFIC. II. SABLEFISH, ANOPLOPOMA FIMBRIA ALICE S several locations in Alaska, Washington, Oregon, and California were analyzed for their mercury content. Mean mercury level in this species varied with the geographical location of catch, showing a gradual

44

Detection of concealed mercury with thermal neutrons  

SciTech Connect

In the United States today, governments at all levels and the citizenry are paying increasing attention to the effects, both real and hypothetical, of industrial activity on the environment. Responsible modem industries, reflecting this heightened public and regulatory awareness, are either substituting benign materials for hazardous ones, or using hazardous materials only under carefully controlled conditions. In addition, present-day environmental consciousness dictates that we deal responsibly with legacy wastes. The decontamination and decommissioning (D&D) of facilities at which mercury was used or processed presents a variety of challenges. Elemental mercury is a liquid at room temperature and readily evaporates in air. In large mercury-laden buildings, droplets may evaporate from one area only to recondense in other cooler areas. The rate of evaporation is a function of humidity and temperature; consequently, different parts of a building may be sources or sinks of mercury at different times of the day or even the year. Additionally, although mercury oxidizes in air, the oxides decompose upon heating. Hence, oxides contained within pipes or equipment, may be decomposed when those pipes and equipment are cut with saws or torches. Furthermore, mercury seeps through the pores and cracks in concrete blocks and pads, and collects as puddles and blobs in void spaces within and under them.

Bell, Z.W.

1994-08-18T23:59:59.000Z

45

Oxidation of Mercury in Products of Coal Combustion  

SciTech Connect

Laboratory measurements of mercury oxidation during selective catalytic reduction (SCR) of nitric oxide, simulation of pilot-scale measurements of mercury oxidation and adsorption by unburned carbon and fly ash, and synthesis of new materials for simultaneous oxidation and adsorption of mercury, were performed in support of the development of technology for control of mercury emissions from coal-fired boilers and furnaces. Conversion of gas-phase mercury from the elemental state to water-soluble oxidized form (HgCl{sub 2}) enables removal of mercury during wet flue gas desulfurization. The increase in mercury oxidation in a monolithic V{sub 2}O{sub 5}-WO{sub 3}/TiO{sub 2} SCR catalyst with increasing HCl at low levels of HCl (< 10 ppmv) and decrease in mercury oxidation with increasing NH{sub 3}/NO ratio during SCR were consistent with results of previous work by others. The most significant finding of the present work was the inhibition of mercury oxidation in the presence of CO during SCR of NO at low levels of HCl. In the presence of 2 ppmv HCl, expected in combustion products from some Powder River Basin coals, an increase in CO from 0 to 50 ppmv reduced the extent of mercury oxidation from 24 {+-} 3 to 1 {+-} 4%. Further increase in CO to 100 ppmv completely suppressed mercury oxidation. In the presence of 11-12 ppmv HCl, increasing CO from 0 to {approx}120 ppmv reduced mercury oxidation from {approx}70% to 50%. Conversion of SO{sub 2} to sulfate also decreased with increasing NH{sub 3}/NO ratio, but the effects of HCl and CO in flue gas on SO{sub 2} oxidation were unclear. Oxidation and adsorption of mercury by unburned carbon and fly ash enables mercury removal in a particulate control device. A chemical kinetic mechanism consisting of nine homogeneous and heterogeneous reactions for mercury oxidation and removal was developed to interpret pilot-scale measurements of mercury oxidation and adsorption by unburned carbon and fly ash in experiments at pilot scale, burning bituminous coals (Gale, 2006) and blends of bituminous coals with Powder River Basin coal (Gale, 2005). The removal of mercury by fly ash and unburned carbon in the flue gas from combustion of the bituminous coals and blends was reproduced with satisfactory accuracy by the model. The enhancement of mercury capture in the presence of calcium (Gale, 2005) explained a synergistic effect of blending on mercury removal across the baghouse. The extent of mercury oxidation, on the other hand, was not so well described by the simulation, because of oversensitivity of the oxidation process in the model to the concentration of unburned carbon. Combined catalysts and sorbents for oxidation and removal of mercury from flue gas at low temperature were based on surfactant-templated silicas containing a transition metal and an organic functional group. The presence of both metal ions and organic groups within the pore structure of the materials is expected to impart to them the ability to simultaneously oxidize elemental mercury and adsorb the resulting oxidized mercury. Twelve mesoporous organosilicate catalysts/sorbents were synthesized, with and without metals (manganese, titanium, vanadium) and organic functional groups (aminopropyl, chloropropyl, mercaptopropyl). Measurement of mercury oxidation and adsorption by the candidate materials remains for future work.

Peter Walsh; Giang Tong; Neeles Bhopatkar; Thomas Gale; George Blankenship; Conrad Ingram; Selasi Blavo Tesfamariam Mehreteab; Victor Banjoko; Yohannes Ghirmazion; Heng Ban; April Sibley

2009-09-14T23:59:59.000Z

46

Dynamic duo captures mercury  

SciTech Connect

There is strong evidence that the combination of wet flue gas desulphurisation (FGD) scrubbers and selective catalytic reduction (SCR) can prove a viable and formidable combination for knocking out mercury. This article analyzes the capabilities and limitations of the SCR-FGD combination for mercury compliance, including applicability to different types of coal and issues with scrubber by-products. 3 figs.

Senior, C.; Adams, B. [Reaction Engineering International (United States)

2006-02-15T23:59:59.000Z

47

Mercury in the environment  

ScienceCinema (OSTI)

Abbott works for Idaho National Laboratory as an environmental scientist. Using state-of-thescienceequipment, he continuously samples the air, looking for mercury. In turn, he'll analyzethis long-term data and try to figure out the mercury's point of or

Idaho National Laboratory - Mike Abbott

2010-01-08T23:59:59.000Z

48

NETL: Mercury Emissions Control  

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

Home > Technologies > Coal & Power Systems > Innovations for Existing Plants > Mercury Emissions Control Home > Technologies > Coal & Power Systems > Innovations for Existing Plants > Mercury Emissions Control Innovations for Existing Plants Mercury Emissions Control NETL managed the largest funded research program in the country to develop an in-depth understanding of fossil combustion-based mercury emissions. The program goal was to develop effective control options that would allow generators to comply with regulations. Research focus areas included measurement and characterization of mercury emissions, as well as the development of cost-effective control technologies for the U.S. coal-fired electric generating industry. Control Technologies Field Testing Phase I & II Phase III Novel Concepts APCD Co-benefits Emissions Characterization

49

Mercury Jet Studies Tristan Davenne  

E-Print Network (OSTI)

Mercury Jet Studies Tristan Davenne Rutherford Appleton Laboratory Joint UKNF, INO, UKIERI meeting mercury target and reported a radial velocity at surface of mercury jet due to proton beam is 36m/s #12;Numerical simulation of Sievers & Pugnat Result Click on image above to watch video of 2cm mercury target

McDonald, Kirk

50

Mercury Effects, Sources and Control Measures  

E-Print Network (OSTI)

Mercury Effects, Sources and Control Measures Prepared by Alan B. Jones, Brooks Rand, Ltd., Seattle ................................................................................................................................1 MERCURY SOURCES....................................................................................................................................................................................8 Mercury dumping from naval vessels

51

Mercury Sensing with Optically Responsive Gold Nanoparticles  

E-Print Network (OSTI)

We assume that the mass of mercury adsorbed at saturation istactics, nanoparticle based mercury sensing should advancemost sensitive method for mercury sensing. References "1!

James, Jay Zachary

2012-01-01T23:59:59.000Z

52

Immunoassay for mercury in seafood and animal tissues  

SciTech Connect

Methylmercury accumulates to high levels in the tissues of fish and other animals through biomagnification. Since methylmercury is extremely toxic, it is important to identify fish or animal tissues with mercury levels too high for human consumption. Current methods for the analysis of mercury are expensive and time- consuming, and they must be performed in a laboratory setting. In this study, a rapid and inexpensive mercury-specific immunoassay developed by BioNebraska was used to measure total mercury in tissue following acid digestion and methylmercury decomposition. A good correlation was obtained between the immunoassay and cold vapor atomic absorption spectrophotometry (CVAAS). Use of the mercury immunoassay will facilitate the rapid screening of large numbers of tissue samples.

Carlson, L.; Holmquist, B.; Ladd, R.; Riddell, M. [BioNebraska, Inc., Lincoln, NE (United States)

1995-12-01T23:59:59.000Z

53

Feather mercury concentrations and physiological condition of great egret and white ibis nestlings in the Florida Everglades  

E-Print Network (OSTI)

Feather mercury concentrations and physiological condition of great egret and white ibis nestlings 2008 Available online 13 February 2009 Mercury contamination in the Florida Everglades has reportedly leading to population-level effects. We assessed feather mercury levels in great egret (Ardea alba; n=91

Gawlik, Dale E.

54

Analysis of Halogen-Mercury Reactions in Flue Gas  

SciTech Connect

Oxidized mercury species may be formed in combustion systems through gas-phase reactions between elemental mercury and halogens, such as chorine or bromine. This study examines how bromine species affect mercury oxidation in the gas phase and examines the effects of mixtures of bromine and chlorine on extents of oxidation. Experiments were conducted in a bench-scale, laminar flow, methane-fired (300 W), quartz-lined reactor in which gas composition (HCl, HBr, NO{sub x}, SO{sub 2}) and temperature profile were varied. In the experiments, the post-combustion gases were quenched from flame temperatures to about 350 C, and then speciated mercury was measured using a wet conditioning system and continuous emissions monitor (CEM). Supporting kinetic calculations were performed and compared with measured levels of oxidation. A significant portion of this report is devoted to sample conditioning as part of the mercury analysis system. In combustion systems with significant amounts of Br{sub 2} in the flue gas, the impinger solutions used to speciate mercury may be biased and care must be taken in interpreting mercury oxidation results. The stannous chloride solution used in the CEM conditioning system to convert all mercury to total mercury did not provide complete conversion of oxidized mercury to elemental, when bromine was added to the combustion system, resulting in a low bias for the total mercury measurement. The use of a hydroxylamine hydrochloride and sodium hydroxide solution instead of stannous chloride showed a significant improvement in the measurement of total mercury. Bromine was shown to be much more effective in the post-flame, homogeneous oxidation of mercury than chlorine, on an equivalent molar basis. Addition of NO to the flame (up to 400 ppmv) had no impact on mercury oxidation by chlorine or bromine. Addition of SO{sub 2} had no effect on mercury oxidation by chlorine at SO{sub 2} concentrations below about 400 ppmv; some increase in mercury oxidation was observed at SO{sub 2} concentrations of 400 ppmv and higher. In contrast, SO{sub 2} concentrations as low as 50 ppmv significantly reduced mercury oxidation by bromine, this reduction could be due to both gas and liquid phase interactions between SO{sub 2} and oxidized mercury species. The simultaneous presence of chlorine and bromine in the flue gas resulted in a slight increase in mercury oxidation above that obtained with bromine alone, the extent of the observed increase is proportional to the chlorine concentration. The results of this study can be used to understand the relative importance of gas-phase mercury oxidation by bromine and chlorine in combustion systems. Two temperature profiles were tested: a low quench (210 K/s) and a high quench (440 K/s). For chlorine the effects of quench rate were slight and hard to characterize with confidence. Oxidation with bromine proved sensitive to quench rate with significantly more oxidation at the lower rate. The data generated in this program are the first homogeneous laboratory-scale data on bromine-induced oxidation of mercury in a combustion system. Five Hg-Cl and three Hg-Br mechanisms, some published and others under development, were evaluated and compared to the new data. The Hg-halogen mechanisms were combined with submechanisms from Reaction Engineering International for NO{sub x}, SO{sub x}, and hydrocarbons. The homogeneous kinetics under-predicted the levels of mercury oxidation observed in full-scale systems. This shortcoming can be corrected by including heterogeneous kinetics in the model calculations.

Paula Buitrago; Geoffrey Silcox; Constance Senior; Brydger Van Otten

2010-01-01T23:59:59.000Z

55

Assessment of mercury in the Savannah River Site environment  

SciTech Connect

Mercury has been valued by humans for several millennia. Its principal ore, cinnabar, was mined for its distinctive reddish-gold color and high density. Mercury and its salts were used as medicines and aphrodisiacs. At SRS, mercury originated from one of the following: as a processing aid in aluminum dissolution and chloride precipitation; as part of the tritium facilities` gas handling system; from experimental, laboratory, or process support facilities; and as a waste from site operations. Mercury is also found in Par Pond and some SRS streams as the result of discharges from a mercury-cell-type chlor-alkali plant near the city of Augusta, GA. Reactor cooling water, drawn from the Savannah River, transported mercury onto the SRS. Approximately 80,000 kg of mercury is contained in the high level waste tanks and 10,000 kg is located in the SWDF. Additional quantities are located in the various seepage basins. In 1992, 617 wells were monitored for mercury contamination, with 47 indicating contamination in excess of the 0.002-ppm EPA Primary Drinking Water Standard. More than 20 Savannah River Ecology Laboratory (SREL) reports and publications pertinent to mercury (Hg) have been generated during the last two decades. They are divided into three groupings: SRS-specific studies, basic studies of bioaccumulation, and basic studies of effect. Many studies have taken place at Par Pond and Upper Three Runs Creek. Mercury has been detected in wells monitoring the groundwater beneath SRS, but not in water supply wells in excess of the Primary Drinking Water Limit of 0.002 ppm. There has been no significant release of mercury from SRS to the Savannah River. While releases to air are likely, based on process knowledge, modeling of the releases indicates concentrations that are well below the SCDHEC ambient standard.

Kvartek, E.J.; Carlton, W.H.; Denham, M.; Eldridge, L.; Newman, M.C.

1994-09-01T23:59:59.000Z

56

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1989-01-01T23:59:59.000Z

57

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg[sub 2]Cl[sub 2] employing as the electrolyte solution a mixture of HCl and H[sub 2]O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H[sub 2]O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds. 3 figures.

Grossman, M.W.; George, W.A.

1991-06-18T23:59:59.000Z

58

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1988-01-01T23:59:59.000Z

59

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1991-01-01T23:59:59.000Z

60

Recovery of mercury from mercury compounds via electrolytic methods  

DOE Patents (OSTI)

A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg[sub 2]Cl[sub 2] employing as the electrolyte solution a mixture of HCl and H[sub 2]O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H[sub 2]O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds. 3 figs.

Grossman, M.W.; George, W.A.

1989-11-07T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Strategies for the Engineered Phytoremediation of Mercury and Arsenic Pollution  

SciTech Connect

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

Dhankher, Om Parkash; Meagher, Richard B.

2003-03-26T23:59:59.000Z

62

Mercury Risk Assessment  

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

ASSESSING THE MERCURY HEALTH RISKS ASSOCIATED ASSESSING THE MERCURY HEALTH RISKS ASSOCIATED WITH COAL-FIRED POWER PLANTS: IMPACTS OF LOCAL DEPOSITIONS *T.M. Sullivan 1 , F.D. Lipfert 2 , S.M. Morris 2 , and S. Renninger 3 1 Building 830, Brookhaven National Laboratory, Upton, NY 11973 2 Private Consultants 3 Department of Energy, National Energy Technology Laboratory, Morgantown, WV ABSTRACT The U.S. Environmental Protection Agency has announced plans to regulate emissions of mercury to the atmosphere from coal-fired power plants. However, there is still debate over whether the limits should be placed on a nationwide or a plant-specific basis. Before a nationwide limit is selected, it must be demonstrated that local deposition of mercury from coal-fired power plants does not impose an excessive local health risk. The principal health

63

Environmental and health aspects of lighting: Mercury  

SciTech Connect

Most discharge lamps, including fluorescent lamps, metal halide lamps, and high pressure sodium lamps, contain Mercury, a toxic chemical. Lighting professionals need to be able to respond to questions about the direct hazards of Mercury from accidentally breaking lamps, and the potential environmental hazards of lamp operation and disposal. We calculated the exposures that could occur from an accidental breakage of lamps. Acute poisoning appears almost impossible. Under some circumstances a sealed environment, such as a space station, could be contaminated enough to make it unhealthy for long-term occupation. Mercury becomes a potential environmental hazard after it becomes methylated. Mercury is methylated in aquatic environments, where it may accumulate in fish, eventually rendering them toxic to people and other animals. Lighting causes Mercury to enter the environment directly from lamp disposal, and indirectly from power plant emissions. The environmental tradeoffs between incandescent and discharge lamps depend upon the amounts released by these two sources, their local concentrations, and their probabilities of being methylated. Indirect environmental effects of lighting also include the release of other heavy metals (Cadmium, Lead and Arsenic), and other air pollutants and carbon dioxide that are emitted by fossil fuel power plants. For a given light output, the level of power plant emissions depends upon the efficacy of the light source, and is thus much larger for incandescent lamps than for fluorescent or discharge lamps. As disposal and control technologies change the relative direct and indirect emissions from discharge and incandescent lamps will change.

Clear, R.; Berman, S.

1993-07-01T23:59:59.000Z

64

XAS Catches the Chemical Form of Mercury in Fish  

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

view large image view large image contact info Friday, 29 August 2003 X-ray Absorption Spectroscopy Catches the Chemical Form of Mercury in Fish - SSRL Scientists Reveal New Findings in Science Article The presence of "methyl mercury" in fish is well-known, but until now the detailed chemical identity of the mercury has remained a mystery. In an x-ray absorption spectroscopy study published in the August 29 issue of Science (Science 301, 2003: 1203; Science now: Murky Picture on Fish Mercury), SSRL scientists report that the chemical form of mercury involves a sulfur atom (most likely in a so-called aliphatic form). The study presents significant new knowledge - because the toxic properties of mercury (or any element) are critically dependent upon its chemical form - and represents an important milestone in developing an understanding of how harmful mercury in fish might actually be. The study was carried out by SSRL staff scientists Ingrid Pickering and Graham George and postdoctoral fellow Hugh Harris using SSRL's structural molecular biology beam line 9-3. The very high flux, excellent beam stability and state-of-the-art detector technology allowed the team to measure samples of fish containing micromolar levels of mercury, much lower than had previously been possible.

65

Determination of mercury and organic mercury contents in Malaysian seafood  

Science Journals Connector (OSTI)

The contents of mercury and organic mercury in various types of seafood from various location in Malaysia were determined...Rastrelliger kanagurta), Spanish mackerel (Scomberomurus commersoni), shrimp (Peneaus sp...

S. A. Rahman; A. K. Wood; S. Sarmani

1997-03-01T23:59:59.000Z

66

NETL: Mercury Emissions Inactive Mercury Projects  

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

Completed Mercury Projects Completed Mercury Projects View specific project information by clicking the state of interest on the map. Clickable U.S. Map ALABAMA Characterizing Toxic Emissions from Coal-Fired Power Plants Southern Research Institute The objective of this contract is to perform sampling and analysis of air toxic emissions at commercial coal-fired power plants in order to collect data that the EPA will use in their Congressionally mandated report on Hazardous Air Pollutants from Electric Utilities. CALIFORNIA Assessment of Toxic Emissions from a Coal-Fired Power Plant Utilizing an ESP Energy & Environmental Research Corporation – CA The overall objective of this project is to conduct comprehensive assessments of toxic emissions of two coal-fired electric utility power plants. The power plant that was assessed for toxic emissions during Phase I was American Electric Power Service Corporation's Cardinal Station Unit 1.

67

NETL: Mercury Emissions Control Technologies - Low-Cost Options for  

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Low-Cost Options for Moderate Levels of Mercury Control Low-Cost Options for Moderate Levels of Mercury Control ADA- Environmental Solutions will test two new technologies for mercury control. The TOXECON II(tm) technology injects activated carbon directly into the downstream collecting fields of an electrostatic precipitator. The benefit of this technology is that the majority of the fly ash is collected in the upstream collecting fields which results in only a small portion of carbon-contaminated ash. Additionally, the TOXECON II(tm) technology requires minimal capital investment as only minor retrofits to the electrostatic precipitator are needed. The second technology is injection of novel sorbents for mercury removal on units with hot-side electrostatic precipitators (ESPs). Mercury removal from hot-side electrostatic precipitators is difficult as their high operating temperature range keeps the mercury in the vapor phase and prevents the mercury from adsorbing onto sorbents. The TOXECON II(tm) technology will be tested at Entergy's Independence Station which burns PRB coal. The novel sorbents for hot-side ESPs technology will be tested at MidAmerican's Council Bluffs Energy Center and MidAmerican's Louisa Station, both of which burn PRB coal. Additional project partners include EPRI, MidAmerican, Entergy, Alliant, ATCO Power, DTE Energy, Oglethorpe Power, Norit Americas Inc., Xcel Energy, Southern Company, Arch Coal, and EPCOR.

68

Mercury-Related Materials Studies  

E-Print Network (OSTI)

Mercury-Related Materials Studies Van Graves IDS NF Ph M tiIDS-NF Phone Meeting Jan 26, 2010 #12 Evaluation of Cavitation Resistance of Type 316LN Stainless Steel in Mercury Using a Vibratory Horn," J. Nucl Pump Impeller Materials for Mercury Service at the Spallation Neutron Source," Oak Ridge National

McDonald, Kirk

69

Gas Mileage of 1994 Vehicles by Mercury  

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

4 Mercury Vehicles 4 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1994 Mercury Capri 4 cyl, 1.6 L, Automatic 4-spd, Regular Gasoline Compare 1994 Mercury Capri 20 City 21 Combined 24 Highway 1994 Mercury Capri 4 cyl, 1.6 L, Manual 5-spd, Regular Gasoline Compare 1994 Mercury Capri 21 City 23 Combined 26 Highway 1994 Mercury Capri 4 cyl, 1.6 L, Manual 5-spd, Regular Gasoline Compare 1994 Mercury Capri 22 City 24 Combined 28 Highway 1994 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1994 Mercury Cougar 17 City 19 Combined 24 Highway 1994 Mercury Cougar 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1994 Mercury Cougar 16 City 18 Combined 23 Highway 1994 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1994 Mercury Grand Marquis 16

70

Gas Mileage of 1985 Vehicles by Mercury  

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

5 Mercury Vehicles 5 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1985 Mercury Capri 4 cyl, 2.3 L, Automatic 3-spd, Regular Gasoline Compare 1985 Mercury Capri 19 City 20 Combined 23 Highway 1985 Mercury Capri 4 cyl, 2.3 L, Manual 4-spd, Regular Gasoline Compare 1985 Mercury Capri 21 City 23 Combined 27 Highway 1985 Mercury Capri 6 cyl, 3.8 L, Automatic 3-spd, Regular Gasoline Compare 1985 Mercury Capri 17 City 18 Combined 20 Highway 1985 Mercury Capri 8 cyl, 5.0 L, Manual 5-spd, Regular Gasoline Compare 1985 Mercury Capri 15 City 17 Combined 22 Highway 1985 Mercury Capri 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1985 Mercury Capri 15 City 17 Combined 22 Highway 1985 Mercury Capri 4 cyl, 2.3 L, Automatic 3-spd, Regular Gasoline Compare 1985 Mercury Capri 18 City

71

NETL: Mercury Emissions Control Technologies - Oxidation of Mercury Across  

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

Oxidation of Mercury Across SCR Catalysts in Coal-Fired Power Plants Burning Low Rank Fuels Oxidation of Mercury Across SCR Catalysts in Coal-Fired Power Plants Burning Low Rank Fuels The objective of the proposed research is to assess the potential for the oxidation of mercury in flue gas across SCR catalysts in a coal fired power plant burning low rank fuels using a slipstream reactor containing multiple commercial catalysts in parallel. Results from the project will contribute to a greater understanding of mercury behavior across SCR catalysts. Additional tasks include: review existing pilot and field data on mercury oxidation across SCR catalysts and propose a mechanism for mercury oxidation and create a simple computer model for mercury oxidation based on the hypothetical mechanism. Related Papers and Publications: Final Report - December 31, 2004 [PDF-532KB]

72

Water displacement mercury pump  

DOE Patents (OSTI)

A water displacement mercury pump has a fluid inlet conduit and diffuser, a valve, a pressure cannister, and a fluid outlet conduit. The valve has a valve head which seats in an opening in the cannister. The entire assembly is readily insertable into a process vessel which produces mercury as a product. As the mercury settles, it flows into the opening in the cannister displacing lighter material. When the valve is in a closed position, the pressure cannister is sealed except for the fluid inlet conduit and the fluid outlet conduit. Introduction of a lighter fluid into the cannister will act to displace a heavier fluid from the cannister via the fluid outlet conduit. The entire pump assembly penetrates only a top wall of the process vessel, and not the sides or the bottom wall of the process vessel. This insures a leak-proof environment and is especially suitable for processing of hazardous materials.

Nielsen, Marshall G. (Woodside, CA)

1985-01-01T23:59:59.000Z

73

Mercury Vapor | Open Energy Information  

Open Energy Info (EERE)

Mercury Vapor Mercury Vapor Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Mercury Vapor Details Activities (23) Areas (23) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Anomalously high concentrations can indicate high permeability or conduit for fluid flow Hydrological: Field wide soil sampling can generate a geometrical approximation of fluid circulation Thermal: High concentration in soils can be indicative of active hydrothermal activity Dictionary.png Mercury Vapor: Mercury is discharged as a highly volatile vapor during hydrothermal

74

It's Elemental - The Element Mercury  

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

Gold Gold Previous Element (Gold) The Periodic Table of Elements Next Element (Thallium) Thallium The Element Mercury [Click for Isotope Data] 80 Hg Mercury 200.59 Atomic Number: 80 Atomic Weight: 200.59 Melting Point: 234.32 K (-38.83°C or -37.89°F) Boiling Point: 629.88 K (356.73°C or 674.11°F) Density: 13.5336 grams per cubic centimeter Phase at Room Temperature: Liquid Element Classification: Metal Period Number: 6 Group Number: 12 Group Name: none What's in a name? Named after the planet Mercury. Mercury's chemical symbol comes from the Greek word hydrargyrum, which means "liquid silver." Say what? Mercury is pronounced as MER-kyoo-ree. History and Uses: Mercury was known to the ancient Chinese and Hindus and has been found in 3500 year old Egyptian tombs. Mercury is not usually found free in nature

75

Gas Mileage of 1986 Vehicles by Mercury  

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

6 Mercury Vehicles 6 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1986 Mercury Capri 4 cyl, 2.3 L, Automatic 3-spd, Regular Gasoline Compare 1986 Mercury Capri 18 City 20 Combined 23 Highway 1986 Mercury Capri 4 cyl, 2.3 L, Manual 4-spd, Regular Gasoline Compare 1986 Mercury Capri 21 City 23 Combined 26 Highway 1986 Mercury Capri 6 cyl, 3.8 L, Automatic 3-spd, Regular Gasoline Compare 1986 Mercury Capri 17 City 19 Combined 22 Highway 1986 Mercury Capri 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1986 Mercury Capri 15 City 18 Combined 24 Highway 1986 Mercury Capri 8 cyl, 5.0 L, Manual 5-spd, Regular Gasoline Compare 1986 Mercury Capri View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 1986 Mercury Cougar 4 cyl, 2.3 L, Automatic 3-spd, Regular Gasoline

76

Gas Mileage of 1991 Vehicles by Mercury  

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

1 Mercury Vehicles 1 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1991 Mercury Capri 4 cyl, 1.6 L, Automatic 4-spd, Regular Gasoline Compare 1991 Mercury Capri 21 City 22 Combined 24 Highway 1991 Mercury Capri 4 cyl, 1.6 L, Manual 5-spd, Regular Gasoline Compare 1991 Mercury Capri View MPG Estimates Shared By Vehicle Owners 21 City 23 Combined 26 Highway 1991 Mercury Capri 4 cyl, 1.6 L, Manual 5-spd, Regular Gasoline Compare 1991 Mercury Capri 22 City 24 Combined 28 Highway 1991 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1991 Mercury Cougar 17 City 20 Combined 24 Highway 1991 Mercury Cougar 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1991 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 16 City 18 Combined 22 Highway 1991 Mercury Grand Marquis 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline

77

Mercury control challenge for industrial boiler MACT affected facilities  

SciTech Connect

An industrial coal-fired boiler facility conducted a test program to evaluate the effectiveness of sorbent injection on mercury removal ahead of a fabric filter with an inlet flue gas temperature of 375{sup o}F. The results of the sorbent injection testing are essentially inconclusive relative to providing the facility with enough data upon which to base the design and implementation of permanent sorbent injection system(s). The mercury removal performance of the sorbents was significantly less than expected. The data suggests that 50 percent mercury removal across a baghouse with flue gas temperatures at or above 375{sup o}F and containing moderate levels of SO{sub 3} may be very difficult to achieve with activated carbon sorbent injection alone. The challenge many coal-fired industrial facilities may face is the implementation of additional measures beyond sorbent injection to achieve high levels of mercury removal that will likely be required by the upcoming new Industrial Boiler MACT rule. To counter the negative effects of high flue gas temperature on mercury removal with sorbents, it may be necessary to retrofit additional boiler heat transfer surface or spray cooling of the flue gas upstream of the baghouse. Furthermore, to counter the negative effect of moderate or high SO{sub 3} levels in the flue gas on mercury removal, it may be necessary to also inject sorbents, such as trona or hydrated lime, to reduce the SO{sub 3} concentrations in the flue gas. 2 refs., 1 tab.

NONE

2009-09-15T23:59:59.000Z

78

PyMercury: Interactive Python for the Mercury Monte Carlo Particle Transport Code  

SciTech Connect

Monte Carlo particle transport applications are often written in low-level languages (C/C++) for optimal performance on clusters and supercomputers. However, this development approach often sacrifices straightforward usability and testing in the interest of fast application performance. To improve usability, some high-performance computing applications employ mixed-language programming with high-level and low-level languages. In this study, we consider the benefits of incorporating an interactive Python interface into a Monte Carlo application. With PyMercury, a new Python extension to the Mercury general-purpose Monte Carlo particle transport code, we improve application usability without diminishing performance. In two case studies, we illustrate how PyMercury improves usability and simplifies testing and validation in a Monte Carlo application. In short, PyMercury demonstrates the value of interactive Python for Monte Carlo particle transport applications. In the future, we expect interactive Python to play an increasingly significant role in Monte Carlo usage and testing.

Iandola, F N; O'Brien, M J; Procassini, R J

2010-11-29T23:59:59.000Z

79

NETL: Mercury Emissions Control Technologies - Evaluation of Sorbent  

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Evaluation of Sorbent Injection for Mercury Control Evaluation of Sorbent Injection for Mercury Control ADA Environmental Solutions will evaluate injection of activated carbon and other sorbents to remove mercury for a variety of coal and air pollution control equipment configurations. The scope of work is for 36 months and intended to gather operating data that will document actual performance levels and accurate cost information to assess the costs of controlling mercury from coal fired utilities. Testing will be conducted at four different host sites that represent a significant percentage of unit configurations. The subsequent cost analyses will include capital costs, by-product utilization issues, sorbent usage, any necessary enhancements, such as SO3 control or flue gas conditioning, balance of plant, manpower requirements and waste issues. The host sites are Sunflower Electric's Holcomb Station, Ontario Power Generation's Nanticoke Station, AmerenUE's Meramec Station and American Electric Power's (AEP) Conesville Station.

80

Evaluation of Background Mercury Concentrations in the SRS Groundwater System  

SciTech Connect

Mercury analyses associated with the A-01 Outfall have highlighted the importance of developing an understanding of mercury in the Savannah River Site groundwater system and associated surface water streams. This activity is critical based upon the fact that the EPA Ambient Water Quality Criteria (AWQC) for this constituent is 0.012mg/L, a level that is well below conventional detection limits of 0.1 to 0.2 mg/L. A first step in this process is obtained by utilizing the existing investment in groundwater mercury concentrations (20,242 records) maintained in the SRS geographical information management system (GIMS) database. Careful use of these data provides a technically defensible initial estimate for total recoverable mercury in background and contaminated SRS wells.

Looney, B.B.

1999-03-03T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Gas Mileage of 2002 Vehicles by Mercury  

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

2 Mercury Vehicles 2 Mercury Vehicles EPA MPG MODEL City Comb Hwy 2002 Mercury Cougar 4 cyl, 2.0 L, Manual 5-spd, Regular Gasoline Compare 2002 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 21 City 24 Combined 31 Highway 2002 Mercury Cougar 6 cyl, 2.5 L, Automatic 4-spd, Regular Gasoline Compare 2002 Mercury Cougar 18 City 21 Combined 26 Highway 2002 Mercury Cougar 6 cyl, 2.5 L, Manual 5-spd, Regular Gasoline Compare 2002 Mercury Cougar 18 City 21 Combined 27 Highway 2002 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 2002 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 2002 Mercury Mountaineer 2WD 6 cyl, 4.0 L, Automatic 5-spd, Regular Gasoline Compare 2002 Mercury Mountaineer 2WD 14 City

82

Gas Mileage of 1989 Vehicles by Mercury  

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

9 Mercury Vehicles 9 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1989 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1989 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 17 City 20 Combined 25 Highway 1989 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Premium Gasoline Compare 1989 Mercury Cougar 15 City 17 Combined 21 Highway 1989 Mercury Cougar 6 cyl, 3.8 L, Manual 5-spd, Premium Gasoline Compare 1989 Mercury Cougar 15 City 18 Combined 22 Highway 1989 Mercury Grand Marquis 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1989 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 22 Highway 1989 Mercury Grand Marquis Wagon 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1989 Mercury Grand Marquis Wagon 15

83

Gas Mileage of 1993 Vehicles by Mercury  

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

3 Mercury Vehicles 3 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1993 Mercury Capri 4 cyl, 1.6 L, Automatic 4-spd, Regular Gasoline Compare 1993 Mercury Capri 20 City 21 Combined 24 Highway 1993 Mercury Capri 4 cyl, 1.6 L, Manual 5-spd, Regular Gasoline Compare 1993 Mercury Capri View MPG Estimates Shared By Vehicle Owners 21 City 23 Combined 26 Highway 1993 Mercury Capri 4 cyl, 1.6 L, Manual 5-spd, Regular Gasoline Compare 1993 Mercury Capri View MPG Estimates Shared By Vehicle Owners 22 City 24 Combined 28 Highway 1993 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1993 Mercury Cougar 17 City 19 Combined 24 Highway 1993 Mercury Cougar 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1993 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 15

84

Gas Mileage of 2008 Vehicles by Mercury  

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

8 Mercury Vehicles 8 Mercury Vehicles EPA MPG MODEL City Comb Hwy 2008 Mercury Grand Marquis FFV 8 cyl, 4.6 L, Automatic 4-spd, Regular Gas or E85 Compare 2008 Mercury Grand Marquis FFV Gas 15 City 18 Combined 23 Highway E85 11 City 13 Combined 16 Highway 2008 Mercury Mariner 4WD 4 cyl, 2.3 L, Automatic 4-spd, Regular Gasoline Compare 2008 Mercury Mariner 4WD 19 City 21 Combined 24 Highway 2008 Mercury Mariner 4WD 6 cyl, 3.0 L, Automatic 4-spd, Regular Gasoline Compare 2008 Mercury Mariner 4WD View MPG Estimates Shared By Vehicle Owners 17 City 19 Combined 22 Highway 2008 Mercury Mariner FWD 4 cyl, 2.3 L, Automatic 4-spd, Regular Gasoline Compare 2008 Mercury Mariner FWD 20 City 22 Combined 26 Highway 2008 Mercury Mariner FWD 6 cyl, 3.0 L, Automatic 4-spd, Regular Gasoline Compare 2008 Mercury Mariner FWD

85

Gas Mileage of 1987 Vehicles by Mercury  

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

7 Mercury Vehicles 7 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1987 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1987 Mercury Cougar 17 City 19 Combined 24 Highway 1987 Mercury Cougar 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1987 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 16 City 19 Combined 24 Highway 1987 Mercury Grand Marquis 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1987 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 16 City 19 Combined 24 Highway 1987 Mercury Grand Marquis Wagon 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1987 Mercury Grand Marquis Wagon 16 City 19 Combined 24 Highway 1987 Mercury Lynx 4 cyl, 1.9 L, Automatic 3-spd, Regular Gasoline Compare 1987 Mercury Lynx 23

86

Gas Mileage of 1990 Vehicles by Mercury  

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

90 Mercury Vehicles 90 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1990 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Premium Gasoline Compare 1990 Mercury Cougar 15 City 18 Combined 21 Highway 1990 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1990 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 17 City 20 Combined 24 Highway 1990 Mercury Cougar 6 cyl, 3.8 L, Manual 5-spd, Premium Gasoline Compare 1990 Mercury Cougar 15 City 18 Combined 22 Highway 1990 Mercury Grand Marquis 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1990 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 22 Highway 1990 Mercury Grand Marquis Wagon 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1990 Mercury Grand Marquis Wagon 15

87

Biosequence Similarity Search on the Mercury System  

E-Print Network (OSTI)

Biosequence Similarity Search on the Mercury System Praveen Krishnamurthy, Jeremy Buhler, Roger Chamberlain, Mark Franklin, Kwame Gyang, and Joseph Lancaster, "Biosequence Similarity Search on the Mercury on the Mercury System Praveen Krishnamurthy, Jeremy Buhler, Roger Chamberlain, Mark Franklin, Kwame Gyang

Chamberlain, Roger

88

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and then quenching the reactivity of the nitric acid prior to nitration of the mercury metal.

Greenhalgh, Wilbur O. (Richland, WA)

1989-01-01T23:59:59.000Z

89

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and thence quenching the reactivity of the nitric acid prior to nitration of the mercury metal. 1 fig.

Greenhalgh, W.O.

1987-02-27T23:59:59.000Z

90

Mercury Strategic Plan Outfall 200 Mercury Treatment Facility  

Office of Environmental Management (EM)

Partial LMR * Alpha-5 LMR & Bldg Characterization * S&M mercury removal * Hg waterfishsediment studies * Technology Development Plan * Debris treatability study * Fate and...

91

Behavior of mercury and iodine during vitrification of simulated alkaline Purex waste  

SciTech Connect

Current plans indicate that the high-level wastes stored at the Savannah River Plant will be solidified by vitrification. The behavior of mercury and iodine during the vitrification process is of concern because: mercury is present in the waste in high concentrations (0.1 to 2.8 wt%); mercury will react with iodine and the other halogens present in the waste during vitrification and; the mercury compounds formed will be volatilized from the vitrification process placing a high particulate load in the vitrification system off-gas. Twelve experiments were completed to study the behavior of mercury during vitrification of simulated SRP Purex waste. The mercury was completely volatized from the vitrification system in all experiments. The mercury reacted with iodine, chlorine and oxygen to form a fine particulate solid. Quantitative recovery of mercury compounds formed in the vitrification system off-gas was not possible due to high (37 to 90%) deposition of solids in the off-gas piping. The behavior of mercury and iodine was most strongly influenced by the vitrification system atmosphere. During experiments performed in which the oxygen content of the vitrification system atmosphere was low (< 1 vol%); iodine retention in the glass product was 27 to 55%, the mercury composition of the solids recovered from the off-gas scrub solutions was 75 to 85 wt%, and a small quantity of metallic mercury was recovered from the off-gas scrub solution. During experiments performed in which the oxygen content of the vitrification system atmosphere was high (20 vol%), iodide retention in the glass product was 3 to 15%, the mercury composition of the solids recovered from the off-gas scrub solutions was 60 to 80 wt%, and very little metallic mercury was recovered from the off-gas scrub solution.

Holton, L.K.

1981-09-01T23:59:59.000Z

92

Field Testing of Activated Carbon Injection Options for Mercury Control at TXU's Big Brown Station  

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

Field TesTing oF AcTivATed cArbon Field TesTing oF AcTivATed cArbon injecTion opTions For Mercury conTrol AT TXu's big brown sTATion Background The 2005 Clean Air Mercury Rule will require significant reductions in mercury emissions from coal-fired power plants. Lignite coal is unique because of its highly variable ash content (rich in alkali and alkaline-earth elements), high moisture levels, low chlorine content, and high calcium content. Unique to Texas lignite coals are relatively high iron and selenium concentrations. When combusting Texas lignite coals, up to 80 percent of the mercury in the flue gas is present as elemental mercury, which is not readily captured by downstream pollution control devices. To better understand the factors that influence mercury control at units firing

93

Neutrino Factory Mercury Flow Loop  

E-Print Network (OSTI)

Neutrino Factory Mercury Flow Loop V. GravesV. Graves C. Caldwell IDS-NF Videoconference March 9, 2010 #12;Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94 2 liter/min 24 9 gpm)mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment showed that a pump

McDonald, Kirk

94

FINAL REPORT ON THE AQUATIC MERCURY ASSESSMENT STUDY  

SciTech Connect

In February 2000, the United States Environmental Protection Agency (EPA) Region 4 issued a proposed Total Maximum Daily Load (TMDL) for total mercury in the middle and lower Savannah River. The initial TMDL, which would have imposed a 1 ng/l mercury limit for discharges to the middle/lower Savannah River, was revised to 2.8 ng/l in the final TMDL released in February 2001. The TMDL was intended to protect people from the consumption of contaminated fish, which is the major route of mercury exposure to humans. The most bioaccumulative form of mercury is methylmercury, which is produced in aquatic environments by the action of microorganisms on inorganic mercury. Because of the environmental and economic significance of the mercury discharge limits that would have been imposed by the TMDL, the Savannah River Site (SRS) initiated several studies concerning: (1) mercury in SRS discharges, SRS streams and the Savannah River, (2) mercury bioaccumulation factors for Savannah River fish, (3) the use of clams to monitor the influence of mercury from tributary streams on biota in the Savannah River, and (4) mercury in rainwater falling on the SRS. The results of these studies are presented in detail in this report. The first study documented the occurrence, distribution and variation of total and methylmercury at SRS industrial outfalls, principal SRS streams and the Savannah River where it forms the border with the SRS. All of the analyses were performed using the EPA Method 1630/31 ultra low-level and contaminant-free techniques for measuring total and methylmercury. Total mercury at National Pollutant Discharge Elimination System (NPDES) outfalls ranged from 0.31-604 ng/l with a mean of 8.71 ng/l. Mercury-contaminated groundwater was the source for outfalls with significantly elevated mercury concentrations. Total mercury in SRS streams ranged from 0.95-15.7 ng/l. Mean total mercury levels in the streams varied from 2.39 ng/l in Pen Branch to 5.26 ng/l in Tims Branch. Methylmercury ranged from 0.002 ng/l in Upper Three Runs to 2.60 ng/l in Tims Branch. Total mercury in the Savannah River ranged from 0.62 ng/l to 43.9 ng/l, and methylmercury ranged from 0.036 ng/l to 7.54 ng/l. Both total and methylmercury concentrations were consistently high in the river near the mouth of Steel Creek. Total mercury was positively correlated with methylmercury (r = 0.88). Total mercury bound to particulates ranged from 41% to 57% in the river and from 28% to 90% in the streams. Particulate methylmercury varied from 9% to 37% in the river and from 6% to 79% in the streams. Small temporary pools in the Savannah River swamp area near and around Fourmile Branch had the highest concentrations observed in the Savannah River watershed, reaching 1,890 ng/l for total mercury and 34.0 ng/l for methylmercury. The second study developed a mercury bioaccumulation factor (BAF) for the Savannah River near SRS. A BAF is the ratio of the concentration of mercury in fish flesh to the concentration of mercury in the water. BAFs are important in the TMDL process because target concentrations for mercury in water are computed from BAFs. Mercury BAFs are known to differ substantially among fish species, water bodies, and possibly seasons. Knowledge of such variation is needed to determine a BAF that accurately represents average and extreme conditions in the water body under study. Analysis of fish tissue and aqueous methylmercury samples collected at a number of locations and over several seasons in a 110 km (68 mile) reach of the Savannah River demonstrated that BAFs for each species under study varied by factors of three to eight. Influences on BAF variability were location, habitat and season-related differences in fish mercury levels and seasonal differences in methylmercury levels in the water. Overall (all locations, habitats, and seasons) average BAFs were 3.7 x 10{sup 6} for largemouth bass, 1.4 x 10{sup 6} for sunfishes, and 2.5 x 10{sup 6} for white catfish. This study showed that determination of representative BAFs for large rivers requires the collect

Halverson, N

2008-09-30T23:59:59.000Z

95

Category:Mercury Vapor | Open Energy Information  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Mercury Vapor page? For detailed information on Mercury Vapor as exploration techniques,...

96

Permitted Mercury Storage Facility Notifications | Department...  

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

Services Waste Management Waste Disposition Long-Term Management and Storage of Elemental Mercury is in the Planning Stages Permitted Mercury Storage Facility...

97

Mercury Detection with Gold Nanoparticles  

E-Print Network (OSTI)

samples by cold vapor-atomic absorption spectrometry, J.S. Gucer, Direct atomic absorption determination of mercuryL. A. Vasilieva, Direct atomic absorption determination of

Crosby, Jeffrey

2013-01-01T23:59:59.000Z

98

Magnetoacoustic Effect in Mercury  

Science Journals Connector (OSTI)

Geometric resonances in the ultrasonic attenuations have been observed in high-purity mercury single crystals with longitudinal sound waves propagated along five crystallographic directions at frequencies up to 165 MHz. Of the five, only data for the (110), (110), and (112) directions are reported. The dominant resonance branches have been assigned to calipers of the second-band electron-lens surface, with three major symmetry calipers being obtained. The remainder of the resonance branches have been assigned to orbits on the first-band hole surface. Various breakthrough dimensions of the hole surface were determined from these orbits. The pseudopotential coefficients corresponding to the planes bounding the first Brillouin zone in mercury have been estimated by comparing the geometric resonance data with the results of a fourpseudowave calculation neglecting spin-orbit coupling.

Tommy E. Bogle; Julian B. Coon; Claude G. Grenier

1969-01-15T23:59:59.000Z

99

NETL: Environmental Research - Fate of Mercury in Synthetic Gypsum Used for  

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

Fate of Mercury in Synthetic Gypsum Used for Wallboard Production Fate of Mercury in Synthetic Gypsum Used for Wallboard Production This project will provide information about the fate of mercury in synthetic gypsum produced by wet FGD systems on coal-fired power plants, when used as feedstock for wallboard production. Wet FGD systems play a key role in current and future efforts to limit the air emissions of mercury control from coal-fired plants. Potential emissions of mercury from FGD byproduct gypsum during wallboard production could limit overall mercury control levels achieved by the coal power industry. Furthermore, any adverse effects of elevated mercury levels in wallboard products could undermine the use of FGD gypsum as a feedstock for wallboard plants. Under a Cooperative Agreement with DOE-NETL, USG Corp., a major producer of wallboard, will provide high-quality data on the extent and location of mercury release during the wallboard production process, and provide additional information on the potential for mercury leaching at the end of the wallboard life cycle, when it is disposed in municipal landfills.

100

Bioaccumulation of mercury in pelagic fishes in NW Gulf of Mexico  

E-Print Network (OSTI)

Total mercury (Hg) levels were determined in the tissues of ten taxa of pelagic fishes, with a special emphasis on apex predators (large vertebrates). Highest Hg levels were observed in blue marlin (Makaira nigricans), carcharhinid sharks (Genus...

Cai, Yan

2006-08-16T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Apparatus for mercury refinement  

DOE Patents (OSTI)

The effluent from mercury collected during the photochemical separation of the [sup 196]Hg isotope is often contaminated with particulate mercurous chloride, Hg[sub 2]Cl[sub 2]. The use of mechanical filtering via thin glass tubes, ultrasonic rinsing with acetone (dimethyl ketone) and a specially designed cold trap have been found effective in removing the particulate (i.e., solid) Hg[sub 2]Cl[sub 2] contaminant. The present invention is particularly directed to such filtering. 5 figures.

Grossman, M.W.; Speer, R.; George, W.A.

1991-07-16T23:59:59.000Z

102

Method for mercury refinement  

DOE Patents (OSTI)

The effluent from mercury collected during the photochemical separation of the [sup 196]Hg isotope is often contaminated with particulate mercurous chloride, Hg[sub 2]Cl[sub 2]. The use of mechanical filtering via thin glass tubes, ultrasonic rinsing with acetone (dimethyl ketone) and a specially designed cold trap have been found effective in removing the particulate (i.e., solid) Hg[sub 2]Cl[sub 2] contaminant. The present invention is particularly directed to such filtering. 5 figures.

Grossman, M.W.; Speer, R.; George, W.A.

1991-04-09T23:59:59.000Z

103

Gas Mileage of 2000 Vehicles by Mercury  

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

2000 Mercury Vehicles 2000 Mercury Vehicles EPA MPG MODEL City Comb Hwy 2000 Mercury Cougar 4 cyl, 2.0 L, Manual 5-spd, Regular Gasoline Compare 2000 Mercury Cougar 21 City 25 Combined 31 Highway 2000 Mercury Cougar 6 cyl, 2.5 L, Automatic 4-spd, Regular Gasoline Compare 2000 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 18 City 21 Combined 26 Highway 2000 Mercury Cougar 6 cyl, 2.5 L, Manual 5-spd, Regular Gasoline Compare 2000 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 18 City 21 Combined 26 Highway 2000 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 2000 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 16 City 18 Combined 23 Highway 2000 Mercury Mountaineer 2WD 6 cyl, 4.0 L, Automatic 5-spd, Regular Gasoline

104

Gas Mileage of 2004 Vehicles by Mercury  

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

4 Mercury Vehicles 4 Mercury Vehicles EPA MPG MODEL City Comb Hwy 2004 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 2004 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 2004 Mercury Marauder 8 cyl, 4.6 L, Automatic 4-spd, Premium Gasoline Compare 2004 Mercury Marauder View MPG Estimates Shared By Vehicle Owners 15 City 17 Combined 21 Highway 2004 Mercury Monterey Wagon FWD 6 cyl, 4.2 L, Automatic 4-spd, Regular Gasoline Compare 2004 Mercury Monterey Wagon FWD View MPG Estimates Shared By Vehicle Owners 15 City 17 Combined 21 Highway 2004 Mercury Mountaineer 2WD 8 cyl, 4.6 L, Automatic 5-spd, Regular Gasoline Compare 2004 Mercury Mountaineer 2WD 13 City 15 Combined 18 Highway 2004 Mercury Mountaineer 2WD 6 cyl, 4.0 L, Automatic 5-spd, Regular Gasoline

105

Gas Mileage of 1997 Vehicles by Mercury  

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

7 Mercury Vehicles 7 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1997 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1997 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 16 City 19 Combined 24 Highway 1997 Mercury Cougar 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1997 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 1997 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1997 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 1997 Mercury Mountaineer 2WD 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1997 Mercury Mountaineer 2WD View MPG Estimates Shared By Vehicle Owners 12 City 14 Combined 17 Highway 1997 Mercury Mountaineer 4WD 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline

106

Gas Mileage of 1995 Vehicles by Mercury  

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

5 Mercury Vehicles 5 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1995 Mercury Cougar 6 cyl, 3.8 L, Automatic 4-spd, Regular Gasoline Compare 1995 Mercury Cougar 17 City 19 Combined 24 Highway 1995 Mercury Cougar 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1995 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 1995 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1995 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 23 Highway 1995 Mercury Mystique 4 cyl, 2.0 L, Automatic 4-spd, Regular Gasoline Compare 1995 Mercury Mystique View MPG Estimates Shared By Vehicle Owners 21 City 24 Combined 29 Highway 1995 Mercury Mystique 6 cyl, 2.5 L, Automatic 4-spd, Regular Gasoline

107

Gas Mileage of 2001 Vehicles by Mercury  

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

1 Mercury Vehicles 1 Mercury Vehicles EPA MPG MODEL City Comb Hwy 2001 Mercury Cougar 4 cyl, 2.0 L, Manual 5-spd, Regular Gasoline Compare 2001 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 21 City 24 Combined 31 Highway 2001 Mercury Cougar 6 cyl, 2.5 L, Automatic 4-spd, Regular Gasoline Compare 2001 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 18 City 21 Combined 26 Highway 2001 Mercury Cougar 6 cyl, 2.5 L, Manual 5-spd, Regular Gasoline Compare 2001 Mercury Cougar View MPG Estimates Shared By Vehicle Owners 18 City 21 Combined 27 Highway 2001 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 2001 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 16 City 18 Combined 23 Highway 2001 Mercury Mountaineer 2WD 6 cyl, 4.0 L, Automatic 5-spd, Regular Gasoline

108

Gas Mileage of 1998 Vehicles by Mercury  

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

8 Mercury Vehicles 8 Mercury Vehicles EPA MPG MODEL City Comb Hwy 1998 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 1998 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 15 City 18 Combined 22 Highway 1998 Mercury Mountaineer 2WD 6 cyl, 4.0 L, Automatic 5-spd, Regular Gasoline Compare 1998 Mercury Mountaineer 2WD View MPG Estimates Shared By Vehicle Owners 14 City 16 Combined 18 Highway 1998 Mercury Mountaineer 2WD 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline Compare 1998 Mercury Mountaineer 2WD 12 City 14 Combined 17 Highway 1998 Mercury Mountaineer 4WD 6 cyl, 4.0 L, Automatic 5-spd, Regular Gasoline Compare 1998 Mercury Mountaineer 4WD View MPG Estimates Shared By Vehicle Owners 14 City 15 Combined 18 Highway 1998 Mercury Mountaineer 4WD 8 cyl, 5.0 L, Automatic 4-spd, Regular Gasoline

109

Gas Mileage of 2005 Vehicles by Mercury  

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

5 Mercury Vehicles 5 Mercury Vehicles EPA MPG MODEL City Comb Hwy 2005 Mercury Grand Marquis 8 cyl, 4.6 L, Automatic 4-spd, Regular Gasoline Compare 2005 Mercury Grand Marquis View MPG Estimates Shared By Vehicle Owners 16 City 19 Combined 23 Highway 2005 Mercury Mariner 2WD 4 cyl, 2.3 L, Automatic 4-spd, Regular Gasoline Compare 2005 Mercury Mariner 2WD View MPG Estimates Shared By Vehicle Owners 19 City 21 Combined 24 Highway 2005 Mercury Mariner 2WD 6 cyl, 3.0 L, Automatic 4-spd, Regular Gasoline Compare 2005 Mercury Mariner 2WD View MPG Estimates Shared By Vehicle Owners 17 City 19 Combined 23 Highway 2005 Mercury Mariner 4WD 4 cyl, 2.3 L, Automatic 4-spd, Regular Gasoline Compare 2005 Mercury Mariner 4WD 17 City 19 Combined 21 Highway 2005 Mercury Mariner 4WD 6 cyl, 3.0 L, Automatic 4-spd, Regular Gasoline

110

A Critical Review on the Heterogeneous Catalytic Oxidation of Elemental Mercury in Flue Gases  

E-Print Network (OSTI)

of novel and highly efficient Hg0 oxidation catalysts. 1. INTRODUCTION Mercury is a leading concern among. Exposure to high levels of mercury has been associated with serious neurological and developmental effects to tremors, inability to walk, convulsions, and death.1,2 Coal-fired utility boilers, which release more than

Guo, John Zhanhu

111

NETL: Health Effects - Risk Assessment of Reduced Mercury Emissions From  

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

Risk Assessment of Reduced Mercury Emissions From Coal-Fired Power Plants Risk Assessment of Reduced Mercury Emissions From Coal-Fired Power Plants Given that mercury emissions from coal power plants will almost certainly be limited by some form of national regulation or legislation, Brookhaven National Laboratory (BNL) is performing an assessment of the reduction in human health risk that may be achieved through reduction in coal plant emissions of mercury. The primary pathway for mercury exposure is through consumption of fish. The most susceptible population to mercury exposure is the fetus. Therefore, the risk assessment focuses on consumption of fish by women of child-bearing age. Preliminary Risk Assessment A preliminary risk assessment was conducted using a simplified approach based on three major topics: Hg emissions and deposition (emphasizing coal plants), Hg consumption through fish, and dose-response functions for Hg. Using information available from recent literature, dose response factors (DRFs) were generated from studies on loss of cognitive abilities (language skills, motor skills, etc.) by young children whose mothers consumed large amounts of fish with high Hg levels. Population risks were estimated for the general population in three regions of the country, (the Midwest, Northeast, and Southeast) that were identified by EPA as being heavily impacted by coal emissions.

112

NETL: Mercury Emissions Control Technologies - Demonstration of Mer-Cure  

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

Demonstration of Mer-Cure Technology for Enhanced Mercury Control Demonstration of Mer-Cure Technology for Enhanced Mercury Control ALSTOM Power, Inc. – U.S. Power Plant Laboratories (ALSTOM-PPL) proposes herein a consortium-based program to demonstrate ALSTOM-PPL's Mer-Cure™ technology – a novel, sorbent-based (Mer-Clean™ ) mercury control technology in coal-fired boilers. The program objective is (i) to demonstrate at a full scale greater than 90% mercury capture based on baseline mercury level (ii) at a cost significantly less than 50% of the $60,000/lb of mercury removed. The proposed full-scale demonstration program is to perform two- to six-month test campaigns in three independent host sites with various boiler configurations over a two-year period. The demonstration program will include a two- to four-week short-term field test followed by two- to six-month long-term demonstration for each of the three selected sites.

113

Treatment of Mercury Contaminated Oil from the Mound Site  

SciTech Connect

Over one thousand gallons of tritiated oil, at various contamination levels, are stored in the Main Hill Tritium Facility at the Miamisburg Environmental Management Project (MEMP), commonly referred to as Mound Site. This tritiated oil is to be characterized for hazardous materials and radioactive contamination. Most of the hazardous materials are expected to be in the form of heavy metals, i.e., mercury, silver, lead, chromium, etc, but transuranic materials and PCBs could also be in some oils. Waste oils, found to contain heavy metals as well as being radioactively contaminated, are considered as mixed wastes and are controlled by Resource Conservation and Recovery Act (RCRA) regulations. The SAMMS (Self-Assembled Mercaptan on Mesoporous Silica) technology was developed by the Pacific Northwest National Laboratory (PNNL) for removal and stabilization of RCRA metals (i.e., lead, mercury, cadmium, silver, etc.) and for removal of mercury from organic solvents. The SAMMS material is based on self-assembly of functionalized monolayers on mesoporous oxide surfaces. The unique mesoporous oxide supports provide a high surface area, thereby enhancing the metal-loading capacity. SAMMS material has high flexibility in that it binds with different forms of mercury, including metallic, inorganic, organic, charged, and neutral compounds. The material removes mercury from both organic wastes, such as pump oils, and from aqueous wastes. Mercury-loaded SAMMS not only passes TCLP tests, but also has good long-term durability as a waste form because: (1) the covalent binding between mercury and SAMMS has good resistance in ion-exchange, oxidation, and hydrolysis over a wide pH range and (2) the uniform and small pore size of the mesoporous silica prevents bacteria from solubilizing the bound mercury.

Klasson, KT

2000-11-09T23:59:59.000Z

114

Gravitomagnetism and the Earth-Mercury range  

E-Print Network (OSTI)

We numerically work out the impact of the general relativistic Lense-Thirring effect on the Earth-Mercury range caused by the gravitomagnetic field of the rotating Sun. The peak-to peak nominal amplitude of the resulting time-varying signal amounts to 1.75 10^1 m over a temporal interval 2 yr. Future interplanetary laser ranging facilities should reach a cm-level in ranging to Mercury over comparable timescales; for example, the BepiColombo mission, to be launched in 2014, should reach a 4.5 - 10 cm level over 1 - 8 yr. We looked also at other Newtonian (solar quadrupole mass moment, ring of the minor asteroids, Ceres, Pallas, Vesta, Trans-Neptunian Objects) and post-Newtonian (gravitoelectric Schwarzschild solar field) dynamical effects on the Earth-Mercury range. They act as sources of systematic errors for the Lense-Thirring signal which, in turn, if not properly modeled, may bias the recovery of some key parameters of such other dynamical features of motion. Their nominal peak-to-peak amplitudes are as large as 4 10^5 m (Schwarzschild), 3 10^2 m (Sun's quadrupole), 8 10^1 m (Ceres, Pallas, Vesta), 4 m (ring of minor asteroids), 8 10^-1 m (Trans-Neptunian Objects). Their temporal patterns are different with respect to that of the gravitomagnetic signal.

Lorenzo Iorio

2011-08-29T23:59:59.000Z

115

NETL: IEP - Mercury Emissions Control: Methods Development  

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

Methods Development Methods Development EPRI and NETL collaboratively funded a $3-million program under the DOE/ University of North Dakota Energy and Environmental Research Center (UNDEERC) Jointly Sponsored Research Program (JSRP) to evaluate, develop, and validate a mercury speciation method for coal-fired produced flue gas. There was a 60/40 percent split of the funding, as required under the JSRP for this two-year effort. The work conducted by the EERC identified the Ontario Hydro Method as the best mercury speciation method. The EERC has validated the Ontario Hydro Method at both pilot- and full-scale levels. Radian International aided in the full-scale validation, with a written protocol of the method being finalized through the American Society for Testing and Materials (ASTM).

116

NETL: Mercury Emissions Control Technologies - Pilot Testing of Mercury  

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

Testing of Mercury Oxidation Catalysts Project Summary Testing of Mercury Oxidation Catalysts Project Summary URS Group, Inc., Austin, TX, will demonstrate at the pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion, and the use of a wet flue gas desulfurization (FGD) system downstream to remove the oxidized mercury at high efficiency. The project's pilot tests, conducted at electric generating plants using wet flue gas desulfurization systems and particulate collection systems, will be conducted for periods up to 14 months to provide data for future, full-scale designs. Mercury-oxidation potential will be measured periodically to provide long-term catalyst life data. The project is applicable to about 90,000 megawatts of generation capacity. Project partners are the Electric Power Research Institute, Palo Alto, CA, which will co-manage and co-fund the pilot tests, and five utilities.

117

NETL: Mercury Emissions Control Technologies - Evaluation of Mercury  

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

Control Technology Evaluation of Mercury Emissions from Coal-Fired Facilities w/ SCR and FGD Systems Control Technology Evaluation of Mercury Emissions from Coal-Fired Facilities w/ SCR and FGD Systems CONSOL is evaluating the mercury removal co-benefits achieved by SCR-FGD combi nations. Specific issues that will be addressed include the effects of SCR, catalyst degradation, and load changes on mercury oxidation and capture. This objective will be achieved by measuring mercury removal achieved by SCR-FGD combinations at ten plants with such equipment configurations. These plants include five with wet limestone, three wet lime, and two with dry scrubbing. Material balance will be conducted. Related Papers and Publications: Final Report - April 2006 [PDF-377KB] Topical Report # 11 - January 2006 [PDF-19MB] Topical Report # 9 - January 2006 [PDF-6MB]

118

Mercury-Related Materials Studies  

E-Print Network (OSTI)

. Pawel, "Assessment of Cavitation-Erosion Resistance of Potential Pump Impeller Materials for MercuryMercury-Related Materials Studies Van Graves IDS NF Ph M tiIDS-NF Phone Meeting Jan 26, 2010 ­ updated Feb 3, 2010 #12;ORNL Material Reports Reviewed · IDS-NF requested ORNL research any past SNS

McDonald, Kirk

119

Stanford University Mercury Thermometer Replacement  

E-Print Network (OSTI)

Stanford University Mercury Thermometer Replacement Program Instructions for Reuniting Separated Fluid Column of Non-Mercury Thermometer Heating Method Heat the thermometers bulb in an upright position of the thermometer. Note that over filling the expansion chamber will break the thermometer. Tap the thermometer

120

RMP Mercury Strategy 06-03-09.doc Page 1 of 5 RMP MERCURY STRATEGY  

E-Print Network (OSTI)

RMP Mercury Strategy 06-03-09.doc Page 1 of 5 RMP MERCURY STRATEGY Mercury is a pollutant of high the information most urgently needed by managers to find remedies to the Bay's mercury problem. The focus of total mercury in the Bay are expected to slowly decline over coming decades. The premise

Note: This page contains sample records for the topic "mercury levels cxs" 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

Mercury Speciation in the Presence of Polysulfides  

E-Print Network (OSTI)

Mercury Speciation in the Presence of Polysulfides J E N N Y A Y L A J A Y , * , F R A N C¸ O I Environmental mercury methylation appears modulated by sulfide concentrations, possibly via changes in mercury, there has been much recent interest in quantifying the chemical speciation and lipid solubility of mercury

Morel, François M. M.

122

Methods for dispensing mercury into devices  

DOE Patents (OSTI)

A process for dispensing mercury into devices which requires mercury. Mercury is first electrolytically separated from either HgO or Hg.sub.2 Cl.sub.2 and plated onto a cathode wire. The cathode wire is then placed into a device requiring mercury.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1987-04-28T23:59:59.000Z

123

Mercury and the Gold Country Angler Survey  

E-Print Network (OSTI)

#12;#12;Mercury and the Gold Rush #12;#12;#12;#12;#12;#12;#12;#12;#12;Gold Country Angler Survey A Pilot Study to Assess Mercury Exposure from Sport Fish Consumption in the Sierra Nevada Carrie Monohan, Ph.D. #12;Mercury and the Gold Rush Deer Creek 1908 Greenhorn Creek 2011 Mercury was used during

124

Methods for dispensing mercury into devices  

DOE Patents (OSTI)

A process is described for dispensing mercury into devices which requires mercury. Mercury is first electrolytically separated from either HgO or Hg[sub 2]Cl[sub 2] and plated onto a cathode wire. The cathode wire is then placed into a device requiring mercury. 2 figs.

Grossman, M.W.; George, W.A.

1987-04-28T23:59:59.000Z

125

Mercury Spill Information and Response Guidance  

E-Print Network (OSTI)

Mercury Spill Information and Response Guidance Background Information Mercury can be found, plumbing traps and vacuum pumps. When mercury is spilled, it forms beads or droplets that can accumulate mercury vapors can be very dangerous, depending on the amount inhaled and the length of exposure

Holland, Jeffrey

126

Collection of atomic mercury by electrostatic precipitators  

Science Journals Connector (OSTI)

... Flameless atomic absorption spectroscopy was used to measure the difference in the mercury concentration of gas ...

O. M. G. NEWMAN; D. J. PALMER

1978-10-12T23:59:59.000Z

127

Atmospheric Chemistry, Modeling, and Biogeochemistry of Mercury  

E-Print Network (OSTI)

activities that release mercury to the atmosphere include coal burning, industrial processes, waste incine

128

Mercury Isotope Fractionation by Environmental Transport and Transformation Processes  

E-Print Network (OSTI)

measurements of atomic mercury. Applied Physics B, 87(2),M. & Covelli, S. , 2000. Mercury speciation in sedimentsarea of the Idrija mercury mine, Slovenia. Environmental

Koster van Groos, Paul Gijsbert

2011-01-01T23:59:59.000Z

129

Mercury Vapor (Kooten, 1987) | Open Energy Information  

Open Energy Info (EERE)

Mercury Vapor (Kooten, 1987) Mercury Vapor (Kooten, 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor (Kooten, 1987) Exploration Activity Details Location Unspecified Exploration Technique Mercury Vapor Activity Date Usefulness useful DOE-funding Unknown Notes Surface soil-mercury surveys are an inexpensive and useful exploration tool for geothermal resources. ---- Surface geochemical surveys for mercury were conducted in 16 areas in 1979-1981 by ARCO Oil and Gas Company as part of its geothermal evaluation program. Three techniques used together have proved satisfactory in evaluating surface mercury data. These are contouring, histograms and cumulative frequency plots of the data. Contouring geochemical data and constructing histograms are standard

130

Mercury Concentrations in Common Tern Sterna hirundo and Slender-billed Gull Larus genei from the Shadegan Marshes of Iran, in North-western Corner of the Persian Gulf  

Science Journals Connector (OSTI)

We examined mercury levels in several tissues of Common Terns and Slender-billed Gulls collected from Shadegan Marshes of south-western Iran. In both species, total mercury content was highest in feathers foll...

Rasool Zamani-Ahmadmahmoodi; Mostafa Alahverdi

2014-06-01T23:59:59.000Z

131

Fluorescent sensor for mercury  

DOE Patents (OSTI)

The present invention provides a sensor for detecting mercury, comprising: a first polynucleotide, comprising a first region, and a second region, a second polynucleotide, a third polynucleotide, a fluorophore, and a quencher, wherein the third polynucleotide is optionally linked to the second region; the fluorophore is linked to the first polynucleotide and the quencher is linked to the second polynucleotide, or the fluorophore is linked to the second polynucleotide and the quencher is linked to the first polynucleotide; the first region and the second region hybridize to the second polynucleotide; and the second region binds to the third polynucleotide in the presence of Hg.sup.2+ ions.

Wang, Zidong (Urbana, IL); Lee, Jung Heon (Evanston, IL); Lu, Yi (Champaign, IL)

2011-11-22T23:59:59.000Z

132

The removal of mercury from solid mixed waste using chemical leaching processes  

SciTech Connect

The focus of this research was to evaluate chemical leaching as a technique to treat soils, sediments, and glass contaminated with either elemental mercury or a combination of several mercury species. Potassium iodide/iodine solutions were investigated as chemical leaching agents for contaminated soils and sediments. Clean, synthetic soil material and surrogate storm sewer sediments contaminated with mercury were treated with KI/I{sub 2} solutions. It was observed that these leaching solutions could reduce the mercury concentration in soil and sediments by 99.8%. Evaluation of selected posttreatment sediment samples revealed that leachable mercury levels in the treated solids exceeded RCRA requirements. The results of these studies suggest that KI/I{sub 2} leaching is a treatment process that can be used to remove large quantities of mercury from contaminated soils and sediments and may be the only treatment required if treatment goals are established on Hg residual concentrations in solid matrices. Fluorescent bulbs were used to simulate mercury contaminated glass mixed waste. To achieve mercury contamination levels similar to those found in larger bulbs such as those used in DOE facilities a small amount of Hg was added to the crushed bulbs. The most effective agents for leaching mercury from the crushed fluorescent bulbs were KI/I{sub 2}, NaOCl, and NaBr + acid. Radionuclide surrogates were added to both the EPA synthetic soil material and the crushed fluorescent bulbs to determine the fate of radionuclides following chemical leaching with the leaching agents determined to be the most promising. These experiments revealed that although over 98% of the dosed mercury solubilized and was found in the leaching solution, no Cerium was measured in the posttreatment leaching solution. This finding suggest that Uranium, for which Ce was used as a surrogate, would not solubilize during leaching of mercury contaminated soil or glass.

Gates, D.D.; Chao, K.K.; Cameron, P.A.

1995-07-01T23:59:59.000Z

133

Mercury (Hg) and methyl mercury (MMHg) bioaccumulation in three fish species (sea food) from Persian Gulf  

Science Journals Connector (OSTI)

In this study, mercury (Hg) and methyl mercury (MMHg) were determined in three fish species including benthic, benthopelagic and pelagic fish from Arvand river, northwest of Persian Gulf. Mercury and methyl mercu...

Sajad Abdolvand; Sahar Kayedinejad Esfahani

2014-09-01T23:59:59.000Z

134

JV Task 96 - Phase 2 - Investigating the Importance of the Mercury-Selenium Interaction  

SciTech Connect

In order to improve the understanding of the mercury issue, it is vital to study mercury's effects on selenium physiology. While mercury present in the environment or food sources may pose health risks, the protective effects of selenium have not been adequately considered in establishing regulatory policy. Numerous studies report that vulnerability to mercury toxicity is inversely proportional to selenium status or level. However, selenium status has not been considered in the development of the reference dosage levels for mercury exposure. Experimental animals fed low-selenium diets are far more vulnerable to mercury toxicity than animals fed normal selenium, and animals fed selenium-rich diets are even more resistant. Selenium-dependent enzymes in brain and endocrine tissues can be impaired by excessive mercury exposure, apparently because mercury has an extremely high binding affinity for selenium. When selenium becomes bound to mercury, it is unable to participate in the metabolic cycling of selenoprotein synthesis. Because of mercury-dependent impairments of selenoprotein synthesis, various antioxidant and regulatory functions in brain biochemistry are compromised. This report details a 2-year multiclient-funded research program designed to examine the interactions between mercury and selenium in animal models. The studies explored the effects of dietary intakes of toxic amounts of methylmercury and the protective effects of the normal dietary range of selenium in counteracting mercury toxicity. This study finds that the amounts of selenium present in ocean fish are sufficient to protect against far larger quantities of methylmercury than those present in typical seafoods. Toxic effects of methylmercury exposure were not directly proportional to mercury concentrations in blood, brain, or any other tissues. Instead, mercury toxicity was proportional to molar ratios of mercury relative to selenium. In order to accurately assess risk associated with methylmercury or mercury exposures, mercury-selenium ratios appear to be far more accurate and effective in identifying risk and protecting human and environmental health. This study also finds that methylmercury toxicity can be effectively treated by dietary selenium, preventing the death and progressive disabilities that otherwise occur in methylmercury-treated subjects. Remarkably, the positive response to selenium therapy was essentially equivalent regardless of whether or not toxic amounts of methylmercury were still administered. The findings of the Physiologically Oriented Integration of Nutrients and Toxins (POINT) models of the effects of mercury and selenium developed in this project are consistent with the hypothesis that mercury toxicity arises because of mercury-dependent inhibition of selenium availability in brain and endocrine tissues. This appears to occur through synergistic effects of mercury-dependent inhibition of selenium transport to these tissues and selective sequestration of the selenium present in the tissues. Compromised transport of selenium to the brain and endocrine tissues would be particularly hazardous to the developing fetus because the rapidly growing tissues of the child have no selenium reserves. Therefore, maternal consumption of foods with high mercury-selenium ratios is hazardous. In summation, methylmercury exposure is unlikely to cause harm in populations that eat selenium-rich diets but may cause harm among populations that consume certain foods that have methylmercury present in excess of selenium.

Nicholas Ralston; Laura Raymond

2008-03-01T23:59:59.000Z

135

MESSENGER Observations of Magnetic Reconnection in Mercurys Magnetosphere  

Science Journals Connector (OSTI)

...Prague 14131, Czech Republic. Solar wind energy transfer to planetary magnetospheres...MP reconnection transfers solar wind energy into the magnetosphere, where...Mercury's magnetosphere. | Solar wind energy transfer to planetary magnetospheres...

James A. Slavin; Mario H. Acua; Brian J. Anderson; Daniel N. Baker; Mehdi Benna; Scott A. Boardsen; George Gloeckler; Robert E. Gold; George C. Ho; Haje Korth; Stamatios M. Krimigis; Ralph L. McNutt; Jr.; Jim M. Raines; Menelaos Sarantos; David Schriver; Sean C. Solomon; Pavel Trvn?ek; Thomas H. Zurbuchen

2009-05-01T23:59:59.000Z

136

Mercury's moment of inertia from spin and gravity data  

E-Print Network (OSTI)

2006), Evolution of Mercurys obliquity, Icarus, 181, 327longitude librations of Mercury, Icarus, 207, 11 of 11The free librations of Mercury and the size of its inner

2012-01-01T23:59:59.000Z

137

"Seeing" Mercury Methylation in Progress  

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

Mercury in the environment can easily reach toxic levels. In a process called methylation, Hg is transformed into a form that can be accumulated in the muscle and fatty tissue of fish. Accumulated levels of methylmercury become higher as the fish grow, and levels are magnified up the food web as larger fish eat smaller fish, a process called biomagnification. As a result, mercury concentrations in fish can be millions of times higher than in surrounding waters [1]. Fish advisories have been set to limit consumption of certain fish higher up on the food web, especially for pregnant women and small children (see Figure 1). Mercury in the environment can easily reach toxic levels. In a process called methylation, Hg is transformed into a form that can be accumulated in the muscle and fatty tissue of fish. Accumulated levels of methylmercury become higher as the fish grow, and levels are magnified up the food web as larger fish eat smaller fish, a process called biomagnification. As a result, mercury concentrations in fish can be millions of times higher than in surrounding waters [1]. Fish advisories have been set to limit consumption of certain fish higher up on the food web, especially for pregnant women and small children (see Figure 1). figure 1 Figure 1. Mercury health risks Health advisory from the CALFED Science Program to limit consumption of fish, in order to avoid excessive accumulation of Hg. Methylated Hg is biomagnified up the food chain, attaining high levels in some types of sportfish. http://science.calwater.ca.gov/images/scinews_hg_da_lg.jpg

138

NETL: Mercury Emissions Control Technologies - Testing of Mercury Control  

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

Testing of Mercury Control with Calcium-Based Sorbents and Oxidizing Agents Testing of Mercury Control with Calcium-Based Sorbents and Oxidizing Agents Southern Research Institute, Birmingham, Alabama Subcontractor- ARCADIS Geraghty & Miller The overall goal of this project is to test the effectiveness of calcium-based sorbents and oxidizing agents for controlling mercury emissions from coal-fired power plant boilers. ARCADIS Geraghty & Miller, with EPA support, has developed calcium-based sorbents to remove SO2 and mercury simultaneously. The sorbents consist of hydrated lime (Ca(OH)2) and an added oxidant and a silica-modified calcium (CaSiO3) with an added oxidant. The mercury capacity in ug Hg/g sorbent for the two sorbents is 20 and 110-150, respectively, verses a mercury capacity for the current standard sorbent, activated carbon, of 70-100. The advantages of a lime based sorbent verses carbon is lower cost, simultaneous removal of sulfur, and allowance of ash to be utilized for a cement additive.

139

MERCURY EMISSIONS FROM A SIMULATED IN-SITU OIL SHALE RETORT  

E-Print Network (OSTI)

measured mercury levels in shale gases and waters. The TLV'srecovery shale Spent shale gas (wet) CS~35 cs~s6 CS-57 CS-59on large areas of the shale bed if gas channeling and

Fox, J. P.

2012-01-01T23:59:59.000Z

140

DATABASE Open Access Regional distribution of mercury in sediments  

E-Print Network (OSTI)

DATABASE Open Access Regional distribution of mercury in sediments of the main rivers of French led to locally high concentrations in soils and sediments. The present study maps the levels of Hg concentrations in river sediments from five main rivers of French Guiana (Approuague River, Comté River, Mana

Boyer, Edmond

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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

Mercury Emissions from Biomass Burning in China  

Science Journals Connector (OSTI)

Because the burned area products from remote sensors with medium resolution often miss the crop burning in fields due to its small size, we used the official statistics data at the provincial level to estimate the mercury emissions from crop residues burning in fields and biofuel combustion in homes. ... Although the amount of crop residues burnt in fields in China could not be reflected accurately in burned area products (MCD45A1) because of their small size, they could be located by MODIS fire counts data. ... Frequently burning grasslands in Africa and Australia, and agricultural waste burning globally, contribute relatively little to the Hg budget. ...

Xin Huang; Mengmeng Li; Hans R. Friedli; Yu Song; Di Chang; Lei Zhu

2011-09-27T23:59:59.000Z

142

Quantification of the Mercury Adsorption Mechanism on Brominated Activated  

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

Quantification of the Mercury Adsorption Mechanism on Brominated Activated Quantification of the Mercury Adsorption Mechanism on Brominated Activated Carbon Saturday, August 31, 2013 The primary anthropogenic source of mercury (Hg) emissions into the atmosphere is coal-fired power utilities. This work explores materials designed for Hg capture to be applied in the ductwork of a power plant to prevent Hg release into the atmosphere. Bench-scale combustion experiments have been carried out, in which sorbent materials were placed in a simulated flue gas stream doped with ppb levels of Hg. The sorbent surfaces were probed using x-ray absorption spectroscopy to determine the mechanism of Hg binding and to ultimately improve solvent design. The spectroscopy data was analyzed alongside results from density functional theory (DFT) for benchmarking so that DFT can be used as a screening tool for material

143

In situ mercury stabilization  

SciTech Connect

BNL Royalty Project Internal Status Report. The funds from the allotment of royalty income were used to experimentally explore feasibility of related, potential new techniques based on the Environmental Sciences Department successful technology licensed for the ex situ treatment of mercury. Specifically, this work is exploring the concept of using Sulfur Polymer Cement (SPC) in an in situ application to stabilize and/or remove mercury (Hg) from surficial soil. Patent disclosure forms have been filed for this process. Soil was artificially spiked with 500 ppm Hg and a series of experiments were set up in which SPC rods were placed in the center of a mass of this soil. Some experiments were conducted at 20 C and others at 50 C. After times ranging from 11 to 24 days, these experiments were opened, photographed and the soil was sampled from discrete locations in the containers. The soil and SPC samples were analyzed for Fe and Hg by x-ray fluorescence. The Hg profile in the soil was significantly altered, with concentrations along the outer edge of the soil reduced by as much as 80% from the starting concentration. Conversely, closer to the treatment rod containing SPC, concentrations of Hg were significantly increased over the original concentration. Preliminary results for elevated temperature sample are shown graphically in Figure 2. Apparently the Hg had migrated toward the SPC and reacted with sulfur to form Hg S. This appears to be a reaction between gaseous phases of both S and Hg, with Hg having a greater vapor pressure. The concentration of low solubility HgS (i.e., low leaching properties) developed within 11 days at 50 C and 21 days at 20 C, confirming the potential of this concept.

Fuhrmann, M.; Kalb, P.; Adams, J.

2004-09-01T23:59:59.000Z

144

Spatial assessment of net mercury emissions from the use of fluorescent bulbs  

SciTech Connect

While fluorescent lighting is an important technology for reducing electrical energy demand, mercury used in the bulbs is an ongoing concern. Using state and country level data, net emissions of mercury from the marginal use of fluorescent lightbulbs are examined for a base year of 2004 for each of the 50 United States and 130 countries. Combustion of coal for electric power generation is generally the largest source of atmospheric mercury pollution; reduction in electricity demand from the substitution of incandescent bulbs with fluorescents leads to reduced mercury emissions during the use of the bulb. This analysis considers the local mix of power sources, coal quality, thermal conversion efficiencies, distribution losses, and any mercury control technologies that might be in place. Emissions of mercury from production and end-of-life treatment of the bulbs are also considered, providing a life-cycle perspective. Net reductions in mercury over the entire life cycle range from -1.2 to 97 mg per bulb depending on the country. The consequences for atmospheric mercury emissions of several policy scenarios are also discussed. 46 refs., 4 figs., 3 tabs.

Matthew J. Eckelman; Paul T. Anastas; Julie B. Zimmerman [Yale University, New Haven, CT (United States). Department of Chemical Engineering

2008-11-15T23:59:59.000Z

145

SULFUR POLYMER STABILIZATION/SOLIDIFICATION (SPSS) TREATABILITY OF LOS ALAMOS NATIONAL LABORATORY MERCURY WASTE.  

SciTech Connect

Brookhaven National Laboratory's Sulfur Polymer Stabilization/Solidification (SPSS) process was used to treat approximately 90kg of elemental mercury mixed waste from Los Alamos National Laboratory. Treatment was carried out in a series of eight batches using a 1 ft{sup 3} pilot-scale mixer, where mercury loading in each batch was 33.3 weight percent. Although leach performance is currently not regulated for amalgamated elemental mercury (Hg) mixed waste, Toxicity Characteristic Leach Procedure (TCLP) testing of SPSS treated elemental mercury waste indicates that leachability is readily reduced to below the TCLP limit of 200 ppb (regulatory requirement following treatment by retort for wastes containing > 260 ppb Hg), and with process optimization, to levels less than the stringent Universal Treatment Standard (UTS) limit of 25 ppb that is applied to waste containing < 260 ppm Hg. In addition, mercury-contaminated debris, consisting of primary glass and plastic containers, as well as assorted mercury thermometers, switches, and labware, was first reacted with SPSS components to stabilize the mercury contamination, then macroencapsulated in the molten SPSS product. This treatment was done by vigorous agitation of the sulfur polymer powder and the comminuted debris. Larger plastic and metal containers were reacted to stabilize internal mercury contamination, and then filled with molten sulfur polymer to encapsulate the treated product.

ADAMS,J.W.; KALB,P.D.

2001-11-01T23:59:59.000Z

146

IntroductionIntroduction Mercury: Monitoring Patients with ParkinsonMercury: Monitoring Patients with Parkinson''s Diseases Disease  

E-Print Network (OSTI)

IntroductionIntroduction Mercury: Monitoring Patients with ParkinsonMercury: Monitoring Patients's Disease EvaluationEvaluation Mercury ArchitectureMercury Architecture Mercury is a wireless sensor network and disconnections Node Behavior Hardware PlatformHardware Platform Usage Scenario InternetInternet http://fiji.eecs.harvard.edu/Mercury

Chen, Yiling

147

Mercury-Mercury Tunneling Junctions. 1. Electron Tunneling Across Symmetric and Asymmetric Alkanethiolate Bilayers  

E-Print Network (OSTI)

Mercury-Mercury Tunneling Junctions. 1. Electron Tunneling Across Symmetric and Asymmetric by bringing in contact two small (3 ? 10-3 cm2) mercury drop electrodes in a 5-20% (v/v) hexadecane solution incorporating alkanethiolate-type monolayer films. The results reported below convince us that the mercury

Majda, Marcin

148

Evaluation of Mercury Emissions from Coal-Fired Facilities with SCR and FGD Systems  

SciTech Connect

CONSOL Energy Inc., Research & Development (CONSOL), with support from the U.S. Department of Energy, National Energy Technology Laboratory (DOE) and the Electric Power Research Institute (EPRI), is evaluating the effects of selective catalytic reduction (SCR) on mercury (Hg) capture in coal-fired plants equipped with an electrostatic precipitator (ESP)--wet flue gas desulfurization (FGD) combination or a spray dyer absorber--fabric filter (SDA-FF) combination. In this program CONSOL is determining mercury speciation and removal at 10 coal-fired facilities. The principal purpose of this work is to develop a better understanding of the potential mercury removal ''co-benefits'' achieved by NO{sub x}, and SO{sub 2} control technologies. It is expected that these data will provide the basis for fundamental scientific insights into the nature of mercury chemistry in flue gas, the catalytic effect of SCR systems on mercury speciation and the efficacy of different FGD technologies for mercury capture. Ultimately, this insight could help to design and operate SCR and FGD systems to maximize mercury removal. The objectives are (1) to evaluate the effect of SCR on mercury capture in the ESP-FGD and SDA-FF combinations at coal-fired power plants, (2) evaluate the effect of SCR catalyst degradation on mercury capture; (3) evaluate the effect of low load operation on mercury capture in an SCR-FGD system, and (4) collect data that could provide the basis for fundamental scientific insights into the nature of mercury chemistry in flue gas, the catalytic effect of SCR systems on mercury speciation and the efficacy of different FGD technologies for mercury capture. This document, the ninth in a series of topical reports, describes the results and analysis of mercury sampling performed on Unit 1 at Plant 7, a 566 MW unit burning a bituminous coal containing 3.6% sulfur. The unit is equipped with a SCR, ESP, and wet FGD to control NO{sub x}, particulate, and SO{sub 2} emissions, respectively. Four sampling tests were performed in August 2004 during ozone season with the SCR operating; flue gas mercury speciation and concentrations were determined at the SCR inlet, SCR outlet, air heater outlet (ESP inlet), ESP outlet (FGD inlet), and at the stack (FGD outlet) using the Ontario Hydro method. Three sampling tests were also performed in November 2004 during non-ozone season with the SCR bypassed; flue gas mercury speciation and concentrations were determined at the ESP outlet (FGD inlet), and at the stack (FGD outlet). Process samples for material balances were collected during the flue gas measurements. The results show that, at the point where the flue gas enters the FGD, a greater percentage of the mercury was in the oxidized form when the SCR was operating compared to when the SCR was bypassed (97% vs 91%). This higher level of oxidation resulted in higher mercury removals in the FGD because the FGD removed 90-94% of the oxidized mercury in both cases. Total coal-to-stack mercury removal was 86% with the SCR operating, and 73% with the SCR bypassed. The average mercury mass balance closure was 81% during the ozone season tests and 87% during the non-ozone season tests.

J. A. Withum; S. C. Tseng; J. E. Locke

2006-01-31T23:59:59.000Z

149

Mercury switch with non-wettable electrodes  

DOE Patents (OSTI)

A mercury switch device comprising a pool of mercury and a plurality of electrical contacts made of or coated with a non-wettable material such as titanium diboride.

Karnowsky, Maurice M. (Albulquerque, NM); Yost, Frederick G. (Carlsbad, NM)

1987-01-01T23:59:59.000Z

150

Mercury Solar Systems | Open Energy Information  

Open Energy Info (EERE)

commercial and residential clients in the New York metrotri-state area. References: Mercury Solar Systems1 This article is a stub. You can help OpenEI by expanding it. Mercury...

151

Mercury speciation in the Persian Gulf sediments  

Science Journals Connector (OSTI)

The concentrations of total mercury (Hg) and methyl mercury (MMHg) were determined in 78 marine sediments in the Iranian coastal waters of the Persian Gulf along nine transects perpendicular to the coastline....?...

Homira Agah; Marc Elskens

2009-10-01T23:59:59.000Z

152

Mercury and organochlorines in eggs from a Norwegian gannet colony  

SciTech Connect

The materials for this study consisted of addled eggs that were collected shortly after the laying season and stored frozen until analysis took place. The collection site is located near Nordmjele at 69/sup 0/ 08' N in northern Norway. Eggs were analyzed for DDE, PCBs and HCB by a gas chromatographic method described by BJERK and SUNDBY (1970). The PCBs were determined via pattern recognition using the commercial PCB standard Aroclor 1254, and the sum of peaks numbers 7, 8, and 10 was used (JENSEN 1972). Analysis for total mercury by flameless atomic absorbtion spectrophotometry followed the procedure of HATCH and OTT (1968). Results show a significant decrease in DDE as well as PCBs levels had taken place between the years 1972 and 1978. The 1979 data support the hypothesis that this indicates a trend as the average DDE and PCBs concentrations dropped further by 33 and 43 per cent, respectively. Only the eggs collected in 1979 were analyzed for HCB. The concentrations were very low (0.033 +/- 0.0018 ppm). The average mercury levels increased from 0.58 ppm in 1972 to 0.80 ppm in 1978 and then dropped to 0.36 ppm the following year. The present levels of DDE, PCBs, and HCB are well below those that by experience have caused problems as, for example, eggshell thinning. The mercury concentrations come closer to such levels as 0.5 ppm of mercury in eggs have been associated with reproductive impairment in pheasants. However, since fish and seafood in general, which constitute the diet of gannets, are rich in selenium, a strong antagonist to mercury such concentrations are probably well within safe limits too.

Fimreite, N. (Telemark College, BO, Norway); Brevik, E.M.; Torp, R.

1982-01-01T23:59:59.000Z

153

A Tragic Reminder about Organic Mercury  

Science Journals Connector (OSTI)

...politically contentious. Mercury is used in industry primarily in the manufacture of batteries, latex paint, urethane, and polyvinyl chloride. Pollution of the environment by mercury occurs mainly through incinerators, fossil-fuel plants, leaching from mining waste, and municipal sewage systems. Industrial discharge... Exposure to mercury and its potential toxic effects is a subject that involves everyone, because we are all frequently exposed. The toxicologic literature has clearly established the dangers of excessive exposure to mercury. What is less clear is the dose ...

Kulig K.

1998-06-04T23:59:59.000Z

154

2003 Mercury Computer Systems, Inc. Data Reorganization  

E-Print Network (OSTI)

© 2003 Mercury Computer Systems, Inc. Data Reorganization Interface (DRI) Data Reorganization Interface (DRI) Kenneth Cain Jr. Mercury Computer Systems, Inc. High Performance Embedded Computing (HPEC Mercury Computer Systems, Inc. Status update for the DRI-1.0 standard since Sep. 2002 publication Outline

Kepner, Jeremy

155

3, 35253541, 2003 Modelling of Mercury  

E-Print Network (OSTI)

ACPD 3, 3525­3541, 2003 Modelling of Mercury with the Danish Eulerian Hemispheric Model J. H and Physics Discussions Modelling of mercury with the Danish Eulerian Hemispheric Model J. H. Christensen, J Correspondence to: J. H. Christensen (jc@dmu.dk) 3525 #12;ACPD 3, 3525­3541, 2003 Modelling of Mercury

Paris-Sud XI, Université de

156

Constraining Mercury Oxidation Using Wet Deposition  

E-Print Network (OSTI)

Constraining Mercury Oxidation Using Wet Deposition Noelle E. Selin and Christopher D. Holmes mercury oxidation [Selin & Jacob, Atmos. Env. 2008] 30 60 90 120 150 30 60 90 120 150 30 60 90 120 150 30 Influences on Mercury Wet Deposition · Hg wet dep = f(precipitation, [Hg(II)+Hg(P)]) Correlation (r2) between

Selin, Noelle Eckley

157

Mercury: Recovering Forgotten Passwords Using Personal Devices  

E-Print Network (OSTI)

Mercury: Recovering Forgotten Passwords Using Personal Devices Mohammad Mannan1 , David Barrera2, and to allow forgotten passwords to be securely restored, we present a scheme called Mercury. Its primary mode and revealed to the user. A prototype implementation of Mercury is available as an Android application. 1

Van Oorschot, Paul

158

2003 Mercury Computer Systems, Inc. Delivered Performance  

E-Print Network (OSTI)

© 2003 Mercury Computer Systems, Inc. Delivered Performance Predictions and Trends for RISC Applications Luke Cico (lcico@mc.com) Mark Merritt (mmerritt@mc.com) Mercury Computer Systems, Inc. Chelmsford, MA 01824 #12;© 2003 Mercury Computer Systems, Inc. Goals of PresentationGoals of Presentation

Kepner, Jeremy

159

Mercury Pollution in the Marine Environment  

E-Print Network (OSTI)

Collaborative December 2012 SourceSto Seafood SourceSto Seafood #12;About the report In 2010, the Toxic Metals.P. Mason, L.R. Rardin, C.V. Schmitt, N.S. Serrell, and E.M. Sunderland. 2012. Sources to Seafood: Mercury. 2 Sources to Seafood: Mercury Pollution in the Marine Environment #12;Executive Summary Mercury

Shepherd, Simon

160

REPLACE YOUR MERCURY THERMOMETERS BEFORE THEY BREAK!  

E-Print Network (OSTI)

REPLACE YOUR MERCURY THERMOMETERS BEFORE THEY BREAK! Did you know, mercury from broken thermometers to the local environment, if broken thermometers in sinks eventually end at the sanitary sewer plant. Broken mercury thermometers create hazardous waste that is costly to clean up and costly to dispose of. Other

Note: This page contains sample records for the topic "mercury levels cxs" 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

MERCURY OXIDIZATION IN NON-THERMAL PLASMA BARRIER DISCHARGE SYSTEM  

SciTech Connect

In the past decade, the emission of toxic elements from human activities has become a matter of great public concern. Hg, As, Se and Cd typically volatilize during a combustion process and are not easily caught with conventional air pollution control techniques. In addition, there is no pollution prevention technique available now or likely be available in the foreseeable future that can prevent the emission of these trace elements. These trace elements pose additional scientific challenge as they are present at only ppb levels in large gas streams. Mercury, in particular, has attracted significant attention due to its high volatility, toxicity and potential threat to human health. In the present research work, a non-thermal plasma dielectric barrier discharge technique has been used to oxidize Hg{sup 0}(g) to HgO. The basic premise of this approach is that Hg{sup 0} in vapor form cannot be easily removed in an absorption tower whereas HgO as a particulate is amiable to water scrubbing. The work presented in this report consists of three steps: (1) setting-up of an experimental apparatus to generate mercury vapors at a constant rate and modifying the existing non-thermal plasma reactor system, (2) solving the analytical challenge for measuring mercury vapor concentration at ppb level, and (3) conducting experiments on mercury oxidation under plasma conditions to establish proof of concept.

V.K. Mathur

2003-02-01T23:59:59.000Z

162

Evaluation of Mercury Emissions from Coal-Fired Facilities with SCR and FGD Systems  

SciTech Connect

CONSOL Energy Inc., Research & Development (CONSOL), with support from the U.S. Department of Energy, National Energy Technology Laboratory (DOE) and the Electric Power Research Institute (EPRI), is evaluating the effects of selective catalytic reduction (SCR) on mercury (Hg) capture in coal-fired plants equipped with an electrostatic precipitator (ESP)--wet flue gas desulfurization (FGD) combination or a spray dyer absorber--fabric filter (SDA-FF) combination. In this program CONSOL is determining mercury speciation and removal at 10 coal-fired facilities. The principal purpose of this work is to develop a better understanding of the potential mercury removal ''co-benefits'' achieved by NO{sub x}, and SO{sub 2} control technologies. It is expected that this data will provide the basis for fundamental scientific insights into the nature of mercury chemistry in flue gas, the catalytic effect of SCR systems on mercury speciation and the efficacy of different FGD technologies for mercury capture. Ultimately, this insight could help to design and operate SCR and FGD systems to maximize mercury removal. The objectives are (1) to evaluate the effect of SCR on mercury capture in the ESP-FGD and SDA-FF combinations at coal-fired power plants, (2) evaluate the effect of SCR catalyst degradation on mercury capture; (3) evaluate the effect of low load operation on mercury capture in an SCR-FGD system, and (4) collect data that could provide the basis for fundamental scientific insights into the nature of mercury chemistry in flue gas, the catalytic effect of SCR systems on mercury speciation and the efficacy of different FGD technologies for mercury capture. This document, the tenth in a series of topical reports, describes the results and analysis of mercury sampling performed on two 468 MW units burning bituminous coal containing 1.3-1.7% sulfur. Unit 2 is equipped with an SCR, ESP, and wet FGD to control NO{sub x}, particulate, and SO{sub 2} emissions, respectively. Unit 1 is similar to Unit 2, except that Unit 1 has no SCR for NOx control. Four sampling tests were performed on both units in January 2005; flue gas mercury speciation and concentrations were determined at the economizer outlet, air heater outlet (ESP inlet), ESP outlet (FGD inlet), and at the stack (FGD outlet) using the Ontario Hydro method. Process samples for material balances were collected with the flue gas measurements. The results show that the SCR increased the oxidation of the mercury at the air heater outlet. At the exit of the air heater, a greater percentage of the mercury was in the oxidized and particulate forms on the unit equipped with an SCR compared to the unit without an SCR (97.4% vs 91%). This higher level of oxidation resulted in higher mercury removals in the scrubber. Total mercury removal averaged 97% on the unit with the SCR, and 87% on the unit without the SCR. The average mercury mass balance closure was 84% on Unit 1 and 103% on Unit 2.

J. A. Withum; J. E. Locke

2006-02-01T23:59:59.000Z

163

DFJ Mercury | Open Energy Information  

Open Energy Info (EERE)

DFJ Mercury DFJ Mercury Jump to: navigation, search Name DFJ Mercury Place Houston, Texas Zip 77046 Product Houston-based seed and early-stage venture capital firm that targets the information technology, advanced materials, and bioscience sectors. Coordinates 29.76045°, -95.369784° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.76045,"lon":-95.369784,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

164

Processing results of 1,800 gallons of mercury and radioactively contaminated mixed waste rinse solution  

SciTech Connect

The mercury-contaminated rinse solution (INEL waste ID{number_sign} 123; File 8 waste) was successfully treated at the Idaho National Engineering Laboratory (INEL). This waste was generated during the decontamination of the Heat Transfer Reactor Experiment 3 (HTRE-3) reactor shield tank. Approximately 1,800 gal of waste was generated and was placed into 33 drums. Each drum contained precipitated sludge material ranging from 1--10 in. in depth, with the average depth of about 2.5 in. The pH of each drum varied from 3--11. The bulk liquid waste had a mercury level of 7.0 mg/l, which exceeded the Resource Conservation and Recovery Act (RCRA) limit of 0.2 mg/l. The average liquid bulk radioactivity was about 2.1 pCi/ml, while the average sludge contamination was about 13,800 pci/g. Treatment of the waste required separation of the liquid from the sludge, filtration, pH adjustment, and ion exchange. Because of difficulties in processing, three trials were required to reduce the mercury levels to below the RCRA limit. In the first trial, insufficient filtration of the waste allowed solid particulate produced during pH adjustment to enter into the ion exchange columns and ultimately the waste storage tank. In the second trial, the waste was filtered down to 0.1 {mu} to remove all solid mercury compounds. However, before filtration could take place, a solid mercury complex dissolved and mercury levels exceeded the RCRA limit after filtration. In the third trial, the waste was filtered through 0.3-A filters and then passed through the S-920 resin to remove the dissolved mercury. The resulting solution had mercury levels at 0.0186 mg/l and radioactivity of 0.282 pCi/ml. This solution was disposed of at the TAN warm waste pond, TAN782, TSF-10.

Thiesen, B.P.

1993-01-01T23:59:59.000Z

165

Mercury capture in bench-scale absorbers  

SciTech Connect

This paper gives,a brief overview of research being conducted at Argonne National Laboratory on the capture of mercury by both dry sorbents and wet scrubbers. The emphasis in the research is on development of a better understanding of the key factors that control the capture of mercury. Future work is expected to utilize that information for the development of new or modified process concepts featuring enhanced mercury capture capabilities. The results and conclusions to date from the Argonne -research on dry sorbents can be summarized as follows: lime hydrates, either regular or high-surface-area, are `not effective in removing mercury; mercury removals are enhanced by the addition of activated carbon; mercury removals with activated carbon decrease with increasing temperature, larger particle size, and decreasing mercury concentration in the gas; and chemical pretreatment (e.g., with sulfur or (CaCl{sub 2}) can greatly increase the removal capacity of activated carbon. Preliminary results from the wet scrubbing research include: no removal of elemental mercury is obtained under normal scrubber operating conditions; mercury removal is improved by the addition of packing or production of smaller gas bubbles to increase the gas-liquid contact area; polysulfide solutions do not appear promising for enhancing mercury removal in typical FGC systems; stainless steel packing appears to have beneficial properties for mercury removal and should be investigated further; and other chemical additives may offer greatly enhanced removals.

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

1994-08-01T23:59:59.000Z

166

NETL: Mercury Emissions Control Technologies - Advanced Mercury Sorbents  

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

Advanced Mercury Sorbents with Low Impact on Power Plant Operations Advanced Mercury Sorbents with Low Impact on Power Plant Operations Apogee Scientific, Inc. (Apogee) will lead a Team comprised of Southern Company Services, TXU, Tennessee Valley Authority, EPRI, URS Group, University of Illinois-Illinois State Geological Survey (ISGS), Southern Research Institute (SRI), Calgon Carbon, and TDA Research, Inc., to evaluate a number of advanced sorbents for removing vapor-phase mercury from coal-fired flue gas that have minimal impact on by-product utilization and/or on existing particulate collection devices (PCD). The main objective of this program is to evaluate several advanced sorbents for removing mercury from coal-fired flue gas while posing minimal impact on plant operations through three advanced sorbent concepts: 1) Sorbents which minimize impact on concrete production through selective chemical passivation of activated carbon and use of non-carbon material, 2) sorbents that minimize baghouse pressure drop and ESP emissions, and 3) sorbents that can be recovered and reused.

167

NETL: Mercury Emissions Control Technologies - Evaluation of MerCAP for  

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

Evaluation of MerCAP(tm) for Power Plant Mercury Control Evaluation of MerCAP(tm) for Power Plant Mercury Control URS Group and its test team will perform research to further develop the novel Mercury Control via Adsorption Process (MerCAP™). The general MerCAP™ concept is to place fixed structures into a flue gas stream to adsorb mercury and then periodically regenerate them and recover the captured mercury. EPRI has shown that gold-based sorbents can achieve high levels of mercury removal in scrubbed flue gases. URS is proposing tests at two power plants using gold MerCAP™, installed downstream of either a baghouse or wet scrubber, to evaluate mercury removal from flue gas over a period of 6 months. At Great River Energy’s Stanton Station, which burns North Dakota lignite, sorbent structures will be retrofitted into a single compartment in the Unit 10 baghouse enabling reaction with a 6 MWe equivalence of flue gas. At Southern Company Services’ Plant Yates, which burns Eastern bituminous coal, gold-coated plates will be configured as a mist eliminator (ME) located downstream of a 1 MWe pilot wet absorber , which receives flue gas from Unit 1.

168

Mercury pollution in Doha (Qatar) coastal environment  

SciTech Connect

Surface water and sediment samples were collected from the Doha coastal area and analyzed for content of physico-chemical forms of mercury. Dissolved reactive Hg represented 81.0% of the total dissolved Hg. Organic Hg contributed only 5.0% of total Hg. Mercury showed a strong tendency to be associated with suspended matter in Doha coastal waters, as it represented about 73.0% of the total. Total Hg in bulk Doha surface sediments fluctuated between 0.14 and 1.75 [mu]g g[sup [minus]1] dry weight, with an average of 0.54 [+-] 0.46 [mu]g g[sup [minus]1] dry weight. The sediment fraction past 63 [mu]m contained 0.73 [+-] 0.60 [mu]g g[sup [minus]1] dry weight total Hg. Leachable and methyl Hg averaged 0.10 [+-] 0.11 and 0.02 [+-] 0.03 [mu]g g[sup [minus]1] dry weight, respectively, in the < 63-[mu]m sediment fraction. There is a general trend for all Hg species determined in water and sediments to decrease seaward. The significantly elevated Hg levels at certain locations indicated that the main Hg sources to Doha coastal environment are leachate from the solid waste disposal site, the two harbors, and surface-water discharge.

Al-Madfa, H.; Dahab, O.A.; Holail, H. (Univ. of Qatar, Doha (Qatar). Dept. of Geology)

1994-05-01T23:59:59.000Z

169

Mercury and lead content in fuels: a literature review  

SciTech Connect

The scope of this report is to provide information on levels of mercury and lead in fuels entering the portland cement manufacturing process. Information was gathered from published literature and cement companies. Most information available for fuels was for coal, followed by information on tire-derived and waste-derived fuel. Limited information was available for petroleum coke and heavy oil. The majority of studies report the maximum levels of mercury in coal, tire-derived fuel, petroleum coke, and heavy oil to be under 1 ppm. Mercury in coal is likely to be associated with pyrite, or organically associated. The majority of studies report the maximum levels of lead in coal to be under 25 ppm, with higher levels in tire-derived and waste-derived fuel, and no information found for lead in petroleum coke and heavy oil fuels. Values provided in this report are concentration levels, mean values, and standard deviation (as available). 24 refs., 7 tabs., 2 figs.

Hills, L.

2006-07-01T23:59:59.000Z

170

All mercury lamps contain small amounts of mercury. An electric current passes through the lamp and vaporizes the mercury to generate light. Recycling mercury containing lamps protects human health and our environment from heavy  

E-Print Network (OSTI)

All mercury lamps contain small amounts of mercury. An electric current passes through the lamp and vaporizes the mercury to generate light. Recycling mercury containing lamps protects human health and our the environment by recycling universal wastes, contact EH&S at (949) 824-6200 or visit: www.ehs.uci.edu Mercury

George, Steven C.

171

Predictable SCR co-benefits for mercury control  

SciTech Connect

A test program, performed in cooperation with Dominion Power and the Babcock and Wilcox Co., was executed at Dominion Power's Mount Storm power plant in Grant County, W. Va. The program was focused on both the selective catalytic reduction (SCR) catalyst capability to oxide mercury as well as the scrubber's capability to capture and retain the oxidized mercury. This article focuses on the SCR catalyst performance aspects. The Mount Storm site consists of three units totaling approximately 1,660 MW. All units are equipped with SCR systems for NOx control. A full-scale test to evaluate the effect of the SCR was performed on Unit 2, a 550 MWT-fired boiler firing a medium sulfur bituminous coal. This test program demonstrated that the presence of an SCR catalyst can significantly affect the mercury speciation profile. Observation showed that in the absence of an SCR catalyst, the extent of oxidation of element a mercury at the inlet of the flue gas desulfurization system was about 64%. The presence of a Cornertech SCR catalyst improved this oxidation to levels greater than 95% almost all of which was captured by the downstream wet FGD system. Cornertech's proprietary SCR Hg oxidation model was used to accurately predict the field results. 1 ref., 2 figs., 1 tab.

Pritchard, S. [Cormtech Inc. (USA)

2009-01-15T23:59:59.000Z

172

An assessment of methyl mercury and volatile mercury in land-applied sewage sludge  

SciTech Connect

In 1993, the US Environmental Protection Agency issued regulations covering the land-application of municipal sewage sludge. These regulations established maximum pollutant concentrations and were based upon a risk assessment of human exposure. Mercury, assumed to be inorganic and non-volatile, was one pollutant evaluated. From April, 1995 through February, 1996, the authors studied the species of mercury contaminating municipal sludge applied to land, and the potential for volatilization of mercury from land-applied sludge. Methyl mercury was found at 0.1% of total mercury concentrations and was emitted from land-applied sludge to the atmosphere. Elemental mercury (Hg) was formed in land-applied sludge via the reduction of oxidized mercury and was also emitted to the atmosphere. Hg emission from land-applied sludge was significantly elevated over background soil emission. Methyl mercury is more toxic and more highly bioaccumulated than inorganic mercury, and warrants assessment considering these special criteria. Additionally, mercury emission from sludge-amended soil may lead to the contamination of other environmental media with significant concentrations of the metal. Although these pathways were not evaluated in the regulatory risk assessment, they are an important consideration for evaluating the risks from mercury in land-applied sludge. This presentation will summarize the results of a re-assessment of US EPA regulations regarding the land-application of municipal sewage sludge using data on methyl mercury toxicity and mercury transport in the atmosphere.

Carpi, A. [Cornell Univ., Ithaca, NY (United States); Lindberg, S.E. [Oak Ridge National Lab., TN (United States)

1995-12-31T23:59:59.000Z

173

Chemical Form Matters: Differential Accumulation of Mercury Following Inorganic and Organic Mercury Exposures in Zebrafish Larvae  

SciTech Connect

Mercury, one of the most toxic elements, exists in various chemical forms each with different toxicities and health implications. Some methylated mercury forms, one of which exists in fish and other seafood products, pose a potential threat, especially during embryonic and early postnatal development. Despite global concerns, little is known about the mechanisms underlying transport and toxicity of different mercury species. To investigate the impact of different mercury chemical forms on vertebrate development, we have successfully combined the zebrafish, a well-established developmental biology model system, with synchrotron-based X-ray fluorescence imaging. Our work revealed substantial differences in tissue-specific accumulation patterns of mercury in zebrafish larvae exposed to four different mercury formulations in water. Methylmercury species not only resulted in overall higher mercury burdens but also targeted different cells and tissues than their inorganic counterparts, thus revealing a significant role of speciation in cellular and molecular targeting and mercury sequestration. For methylmercury species, the highest mercury concentrations were in the eye lens epithelial cells, independent of the formulation ligand (chloride versus L-cysteine). For inorganic mercury species, in absence of L-cysteine, the olfactory epithelium and kidney accumulated the greatest amounts of mercury. However, with L-cysteine present in the treatment solution, mercuric bis-L-cysteineate species dominated the treatment, significantly decreasing uptake. Our results clearly demonstrate that the common differentiation between organic and inorganic mercury is not sufficient to determine the toxicity of various mercury species.

Korbas, Malgorzata; MacDonald, Tracy C.; Pickering, Ingrid J.; George, Graham N.; Krone, Patrick H. (Saskatchewan)

2013-04-08T23:59:59.000Z

174

A Cavity Ring-Down Spectroscopy Mercury Continuous Emission Monitor  

SciTech Connect

The Sensor Research & Development Corporation (SRD) has undertaken the development of a Continuous Emissions Monitor (CEM) for mercury based on the technique of Cavity Ring-Down Spectroscopy (CRD). The project involved building an instrument for the detection of trace levels of mercury in the flue gas emissions from coal-fired power plants. The project has occurred over two phases. The first phase concentrated on the development of the ringdown cavity and the actual detection of mercury. The second phase dealt with the construction and integration of the sampling system, used to carry the sample from the flue stack to the CRD cavity, into the overall CRD instrument. The project incorporated a Pulsed Alexandrite Laser (PAL) system from Light Age Incorporated as the source to produce the desired narrow band 254 nm ultra-violet (UV) radiation. This laser system was seeded with a diode laser to bring the linewidth of the output beam from about 150 GHz to less than 60 MHz for the fundamental beam. Through a variety of non-linear optics the 761 nm fundamental beam is converted into the 254 nm beam needed for mercury detection. Detection of the mercury transition was verified by the identification of the characteristic natural isotopic structure observed at lower cavity pressures. The five characteristic peaks, due to both natural isotopic abundance and hyperfine splitting, provided a unique identifier for mercury. SRD scientists were able to detect mercury in air down below 10 parts-per-trillion by volume (pptr). This value is dependent on the pressure and temperature within the CRD cavity at the time of detection. Sulfur dioxide (SO{sub 2}) absorbs UV radiation in the same spectral region as mercury, which is a significant problem for most mercury detection equipment. However, SRD has not only been able to determine accurate mercury concentrations in the presence of SO{sub 2}, but the CRD instrument can in fact determine the SO{sub 2} concentration as well. Detection of mercury down to the low hundreds of pptr has been accomplished in the presence of SO{sub 2} at concentration levels much higher than that found in typical flue gas emissions. SRD scientists extended the interferent testing to each individual component found in flue gas. It was found that only SO{sub 2} had a significant effect on the ring-down decay curve. Upon completion of testing the components of flue gas individually a simulated flue gas stream was used to test to the CRD instrument. The result showed accurate detection of mercury down to levels below 100 pptr in a simulated flue gas stream with the concentrations of the various components above that found in a typical untreated flue gas. A sampling system was designed and integrated into the CRD instrument to carry the sample from the flue gas stack to the CRD cavity. The sampling system was constructed so that it could be placed very close to the sampling port. SRD scientists were able to couple the UV laser light into an optical fiber, which is then sent to the sampling system. This allows the laser system to be isolated from the sampling system. Initial long-term testing revealed a couple of problems related to the stability of the output frequency of the laser system. These problems have been successfully dealt with by incorporating specific software solutions into the overall data acquisition program. The project culminated in a field test conducted at the DOE/NETL pilot plant facility in Pittsburgh, Pennsylvania. The object of the test was the evaluation of a cavity ringdown spectrometer constructed for the detection of TOTAL vapor phase mercury as a continuous emission monitor (CEM). Although there is the potential for the instrument to determine the amount of speciation between neutral elemental mercury (Hg{sup (o)}) and oxidized mercury (Hg{sup (+2)}), the initial test plan was to concentrate on the measurement of the total mercury. Another added benefit is that the measurements will report the sulfur dioxide (SO 2) concentration throughout the test. This report concludes the technical work asso

Christopher C. Carter

2004-12-15T23:59:59.000Z

175

Mercury emissions from municipal solid waste combustors  

SciTech Connect

This report examines emissions of mercury (Hg) from municipal solid waste (MSW) combustion in the United States (US). It is projected that total annual nationwide MSW combustor emissions of mercury could decrease from about 97 tonnes (1989 baseline uncontrolled emissions) to less than about 4 tonnes in the year 2000. This represents approximately a 95 percent reduction in the amount of mercury emitted from combusted MSW compared to the 1989 mercury emissions baseline. The likelihood that routinely achievable mercury emissions removal efficiencies of about 80 percent or more can be assured; it is estimated that MSW combustors in the US could prove to be a comparatively minor source of mercury emissions after about 1995. This forecast assumes that diligent measures to control mercury emissions, such as via use of supplemental control technologies (e.g., carbon adsorption), are generally employed at that time. However, no present consensus was found that such emissions control measures can be implemented industry-wide in the US within this time frame. Although the availability of technology is apparently not a limiting factor, practical implementation of necessary control technology may be limited by administrative constraints and other considerations (e.g., planning, budgeting, regulatory compliance requirements, etc.). These projections assume that: (a) about 80 percent mercury emissions reduction control efficiency is achieved with air pollution control equipment likely to be employed by that time; (b) most cylinder-shaped mercury-zinc (CSMZ) batteries used in hospital applications can be prevented from being disposed into the MSW stream or are replaced with alternative batteries that do not contain mercury; and (c) either the amount of mercury used in fluorescent lamps is decreased to an industry-wide average of about 27 milligrams of mercury per lamp or extensive diversion from the MSW stream of fluorescent lamps that contain mercury is accomplished.

Not Available

1993-05-01T23:59:59.000Z

176

A Mercury orientation model including non-zero obliquity and librations  

E-Print Network (OSTI)

Long-period forcing of Mercurys libration in longitude.M. : Resonant forcing of Mercurys libration in longitude.A revised control network for Mercury. J. Geophys. Res. 104,

Margot, Jean-Luc

2009-01-01T23:59:59.000Z

177

Atmospheric Mercury Deposition during the Last 270 Years: A  

E-Print Network (OSTI)

Atmospheric Mercury Deposition during the Last 270 Years: A Glacial Ice Core Record of Natural, and U.S. Geological Survey, Wisconsin District Mercury Research Laboratory, Middleton, Wisconsin 53562 Mercury (Hg) contamination of aquatic ecosystems and subsequent methylmercury bioaccumulation

178

Mercury-Contaminated Hydraulic Mining Debris in San Francisco Bay  

E-Print Network (OSTI)

S, and Flegal AR 2008. Mercury in the San Francisco Estuary.may 2010 Mercury-Contaminated Hydraulic Mining Debris in Sancontaminants such as ele- mental mercury and cyanide used in

Bouse, Robin M; Fuller, Christopher C; Luoma, Sam; Hornberger, Michelle I; Jaffe, Bruce E; Smith, Richard E

2010-01-01T23:59:59.000Z

179

Mercury Surface, Space Environment, Geochemistry, and Ranging Mission  

E-Print Network (OSTI)

MESSENGER Mercury Surface, Space Environment, Geochemistry, and Ranging Mission Frequently Asked Mercury's characteristics and environment during two complementary mission phases. The mission's primary goal is to increase our understanding of Mercury's density, geologic history, magnetic field, core

Mojzsis, Stephen J.

180

Control of mercury methylation in wetlands through iron addition  

E-Print Network (OSTI)

Mason, R. P. ; Flegal, A. R. , Mercury speciation in the SanP. ; Flegal, A. R. , Decadal mercury trends in San FranciscoP. G. ; Nelson, D. C. , Mercury methylation from unexpected

Sedlak, David L; Ulrich, Patrick D

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Determination of Mercury in Soils by Flameless Atomic Absorption Spectrometry  

Science Journals Connector (OSTI)

...chemical analysis exploration flameless geochemical methods mercury...Determination of Mercury in Soils by Flameless Atomic Absorption Spectrometry...Determinationof Mercury in Soilsby Flameless Atomic AbsorptionSpectrometry...the mercuryre- RF Induction Heater work coils 1. Carriergas...

B. G. Weissberg

182

Assessing Sources of Human Methylmercury Exposure Using Stable Mercury Isotopes  

Science Journals Connector (OSTI)

Oken, E.; Radesky, J. S.; Wright, R. O.; Bellinger, D. C.; Amarasiriwardena, C. J.; Kleinman, K. P.; Hu, H.; Gillman, M. W.Maternal fish intake during pregnancy, blood mercury levels, and child cognition at age 3 years in a US cohort Am. ... Oken Emily; Radesky Jenny S; Wright Robert O; Bellinger David C; Amarasiriwardena Chitra J; Kleinman Ken P; Hu Howard; Gillman Matthew W ...

Miling Li; Laura S. Sherman; Joel D. Blum; Philippe Grandjean; Bjarni Mikkelsen; Pl Weihe; Elsie M. Sunderland; James P. Shine

2014-06-26T23:59:59.000Z

183

COST OF MERCURY REMOVAL IN IGCC PLANTS  

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

Cost of Mercury Removal Cost of Mercury Removal in an IGCC Plant Final Report September 2002 Prepared for: The United States Department of Energy National Energy Technology Laboratory By: Parsons Infrastructure and Technology Group Inc. Reading, Pennsylvania Pittsburgh, Pennsylvania DOE Product Manager: Gary J. Stiegel DOE Task Manager: James R. Longanbach Principal Investigators: Michael G. Klett Russell C. Maxwell Michael D. Rutkowski PARSONS The Cost of Mercury Removal in an IGCC Plant Final Report i September 2002 TABLE OF CONTENTS Section Title Page 1 Summary 1 2 Introduction 3 3 Background 4 3.1 Regulatory Initiatives 4 3.2 Mercury Removal for Conventional Coal-Fired Plants 4 3.3 Mercury Removal Experience in Gasification 5 3.4 Variability of Mercury Content in Coal 6 4 Design Considerations 7 4.1 Carbon Bed Location

184

Assessment of Low Cost Novel Mercury Sorbents  

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

Testing of Mercury Control Technologies Testing of Mercury Control Technologies for Coal-Fired Power Plants by Thomas J. Feeley, III 1. , Lynn A. Brickett 1. , B. Andrew O'Palko 1. , and James T. Murphy 2. 1. U.S. Department of Energy, National Energy Technology Laboratory 2. Science Applications International Corporation The U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) is conducting a comprehensive research, development, and demonstration (RD&D) program directed at advancing the performance and economics of mercury control technologies for coal- fired power plants. The program also includes evaluating the fate of mercury in coal by-products and studying the transport and transformation of mercury in power plant plumes. This paper presents results from ongoing full-scale and slip-stream field testing of several mercury control

185

Remediation of Mercury-Contaminated Storm Sewer Sediments from the West End Mercury Area at the Y-12 National Security Complex in Oak Ridge, Tennessee - 12061  

SciTech Connect

The Y-12 National Security Complex in Oak Ridge, TN has faced an ongoing challenge from mercury entrapped in soils beneath and adjacent to buildings, storm sewers, and process pipelines. Previous actions to reduce the quantity and/or mobilization of mercury-contaminated media have included plugging of building floor drains, cleaning of sediment and sludge from sumps, manholes, drain lines, and storm sewers, lining/relining of storm sewers and replacement of a portion of the storm sewer trunk line, re-routing and removal of process piping, and installation of the Central Mercury Treatment System to capture and treat contaminated sump water. Despite the success of these actions, mercury flux in the storm sewer out-falls that discharge to Upper East Fork Poplar Creek (UEFPC) continues to pose a threat to long-term water quality. A video camera survey of the storm sewer network revealed several sections of storm sewer that had large cracks, separations, swells, and accumulations of sediment/sludge and debris. The selected remedy was to clean and line the sections of storm sewer pipe that were determined to be primary contributors to the mercury flux in the storm sewer out-falls. The project, referred to as the West End Mercury Area (WEMA) Storm Sewer Remediation Project, included cleaning sediment and debris from over 2,460 meters of storm sewer pipe followed by the installation of nearly 366 meters of cure-in-place pipe (CIPP) liner. One of the greatest challenges to the success of this project was the high cost of disposal associated with the mercury-contaminated sludge and wastewater generated from the storm sewer cleaning process. A contractor designed and operated an on-site wastewater pre-treatment system that successfully reduced mercury levels in 191 cubic meters of sludge to levels that allowed it to be disposed at Nevada Nuclear Security Site (NNSS) disposal cell as a non-hazardous, low-level waste. The system was also effective at pre-treating over 1,514,000 liters of wastewater to levels that met the waste acceptance criteria for the on-site West End [wastewater] Treatment Facility (WETF). This paper describes the storm sewer cleaning and lining process and the methods used to process the mercury-contaminated sludge and wastewater, as well as several 'lessons learned' that would be relevant to any future projects involving storm sewer cleaning and debris remediation. (authors)

Tremaine, Diana [Science and Ecology Corporation, Knoxville, Tennessee, 37931 (United States); Douglas, Steven G. [B and W Y-12, Oak Ridge, Tennessee, 37831 (United States)

2012-07-01T23:59:59.000Z

186

Mercury Replacement Program It is the policy of California State University, Fullerton to remove mercury containing  

E-Print Network (OSTI)

Mercury Replacement Program I. Policy It is the policy of California State University, Fullerton to remove mercury containing devices throughout campus, insofar as is reasonably possible, and provide, the University has an obligation to safeguard employees from the potential health effects of mercury vapor while

de Lijser, Peter

187

Sulfurization of a carbon surface for vapor phase mercury removal II: Sulfur forms and mercury uptake  

E-Print Network (OSTI)

promote the formation of organic sulfur and the presence of H2S during the cooling process increased in the presence of H2S was very effective towards Hg uptake in nitrogen. Corre- lation of mercury uptake capacitySulfurization of a carbon surface for vapor phase mercury removal ­ II: Sulfur forms and mercury

Borguet, Eric

188

Remediation of Mercury and Industrial Contaminants Applied Field...  

Office of Environmental Management (EM)

Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative (RoMIC-AFRI) Remediation of Mercury and Industrial Contaminants Applied Field Research...

189

Mercury/Waterfilling: Optimum Power Allocation with Arbitrary Input Constellations  

E-Print Network (OSTI)

Mercury/Waterfilling: Optimum Power Allocation with Arbitrary Input Constellations Angel Lozano gives the power allocation policy, referred to as mercury/waterfilling, that maximizes the sum mutual

Verdú, Sergio

190

DOE Interim Guidance on Mercury Management Procedures and Standards...  

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

Services Waste Management Waste Disposition Long-Term Management and Storage of Elemental Mercury is in the Planning Stages DOE Interim Guidance on Mercury Management...

191

Mercury: A Diode-Pumped Solid-State Laser  

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

with the development of the National Ignition Facility and its goal of achieving thermonuclear burn was another ambitious Livermore laser project named Mercury. The Mercury...

192

Apparatus for isotopic alteration of mercury vapor  

DOE Patents (OSTI)

An apparatus for enriching the isotopic Hg content of mercury is provided. The apparatus includes a reactor, a low pressure electric discharge lamp containing a fill including mercury and an inert gas. A filter is arranged concentrically around the lamp. In a preferred embodiment, constant mercury pressure is maintained in the filter by means of a water-cooled tube that depends from it, the tube having a drop of mercury disposed in it. The reactor is arranged around the filter, whereby radiation from said lamp passes through the filter and into said reactor. The lamp, the filter and the reactor are formed of a material which is transparent to ultraviolet light.

Grossman, Mark W. (Belmont, MA); George, William A. (Gloucester, MA); Marcucci, Rudolph V. (Danvers, MA)

1988-01-01T23:59:59.000Z

193

Alkaline sorbent injection for mercury control  

DOE Patents (OSTI)

A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.

Madden, Deborah A. (Boardman, OH); Holmes, Michael J. (Washington Township, Stark County, OH)

2003-01-01T23:59:59.000Z

194

Alkaline sorbent injection for mercury control  

DOE Patents (OSTI)

A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.

Madden, Deborah A. (Boardman, OH); Holmes, Michael J. (Washington Township, Stark County, OH)

2002-01-01T23:59:59.000Z

195

Mercury Sensing with Optically Responsive Gold Nanoparticles  

E-Print Network (OSTI)

1.1.5 Mercury detection Atomic absorption 19 and atomicsacrifices in simplicity. Atomic absorption or fluorescencedown to low nanogram masses. Atomic absorption/fluorescence

James, Jay Zachary

2012-01-01T23:59:59.000Z

196

Mercury, to put it plainly, is bad stuff. In people, it causes exhaustion, headaches, memory loss, even brain damage; in birds it appears to have similar nervous system impacts and can harm their eggs; in the environment, there's almost no way to get rid  

E-Print Network (OSTI)

Mercury, to put it plainly, is bad stuff. In people, it causes exhaustion, headaches, memory loss; in the environment, there's almost no way to get rid of it. Mercury in the San Francisco Bay is especially sinister with for cleaning up our bay and mitigating past errors, often make mercury levels worse. But why that is, where it

197

Oak Ridge Moves Forward in Mercury Cleanup | Department of Energy  

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

Oak Ridge Moves Forward in Mercury Cleanup Oak Ridge Moves Forward in Mercury Cleanup Oak Ridge Moves Forward in Mercury Cleanup March 28, 2013 - 12:00pm Addthis Workers recently removed five large mercury-contaminated tanks from Y-12. Workers recently removed five large mercury-contaminated tanks from Y-12. Removing these tanks is part of the steps to reduce potential risk from mercury at Y-12. Removing these tanks is part of the steps to reduce potential risk from mercury at Y-12. Workers recently removed five large mercury-contaminated tanks from Y-12. Removing these tanks is part of the steps to reduce potential risk from mercury at Y-12. OAK RIDGE, Tenn. - Oak Ridge's EM program is making significant progress to reduce environmental mercury releases from the Y-12 National Security Complex. Mercury is one of the greatest environmental concerns facing the Oak Ridge

198

Oak Ridge Moves Forward in Mercury Cleanup | Department of Energy  

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

Moves Forward in Mercury Cleanup Moves Forward in Mercury Cleanup Oak Ridge Moves Forward in Mercury Cleanup March 28, 2013 - 12:00pm Addthis Workers recently removed five large mercury-contaminated tanks from Y-12. Workers recently removed five large mercury-contaminated tanks from Y-12. Removing these tanks is part of the steps to reduce potential risk from mercury at Y-12. Removing these tanks is part of the steps to reduce potential risk from mercury at Y-12. Workers recently removed five large mercury-contaminated tanks from Y-12. Removing these tanks is part of the steps to reduce potential risk from mercury at Y-12. OAK RIDGE, Tenn. - Oak Ridge's EM program is making significant progress to reduce environmental mercury releases from the Y-12 National Security Complex. Mercury is one of the greatest environmental concerns facing the Oak Ridge

199

CARBON BED MERCURY EMISSIONS CONTROL FOR MIXED WASTE TREATMENT  

SciTech Connect

Mercury has had various uses in nuclear fuel reprocessing and other nuclear processes, and so is often present in radioactive and mixed (both radioactive and hazardous according tohe Resource Conservation and Recovery Act) wastes. Depending on regulatory requirements, the mercury in the off-gas must be controlled with sometimes very high efficiencies. Compliance to the Hazardous Waste Combustor (HWC) Maximum Achievable Control Technology (MACT) standards can require off-gas mercury removal efficiencies up to 99.999% for thermally treating some mixed waste streams. Several test programs have demonstrated this level of off-gas mercury control using fixed beds of granular sulfur-impregnated activated carbon. Other results of these tests include: (a) The depth of the mercury control mass transfer zone was less than 15-30 cm for the operating conditions of these tests, (b) MERSORB carbon can sorb Hg up to 19 wt% of the carbon mass, and (c) the spent carbon retained almost all (98 99.99%) of the Hg; but when even a small fraction of the total Hg dissolves, the spent carbon can fail the TCLP test when the spent carbon contains high Hg concentrations. Localized areas in a carbon bed that become heated through heat of adsorption, to temperatures where oxidation occurs, are referred to as bed hot spots. Carbon bed hot spots must be avoided in processes that treat radioactive and mixed waste. Key to carbon bed hot spot mitigation are (a) designing for sufficient gas velocity, for avoiding gas flow maldistribution, and for sufficient but not excessive bed depth, (b) monitoring and control of inlet gas flowrate, temperature, and composition, (c) monitoring and control of in-bed and bed outlet gas temperatures, and (d) most important, monitoring of bed outlet CO concentrations. An increase of CO levels in the off-gas downstream of the carbon bed to levels about 50-100 ppm higher than the inlet CO concentration indicate CO formation in the bed, caused by carbon bed hot spots. Corrective actions must be implemented quickly if bed hot spots are detected, using a graded approach and sequence starting with corrective actions that are simple, quick, cause the least impact to the process, and are easiest to recover from. Multiple high and high-high alarm levels should be used, with appropriate corrective actions for each level.

Nick Soelberg; Joe Enneking

2010-11-01T23:59:59.000Z

200

Trends in mercury concentrations in the hair of women of Nome, Alaska - Evidence of seafood consumption or abiotic absorption  

SciTech Connect

Eighty samples of hair from women of child-bearing age from Nome, Alaska, and seven control samples from women living in Sequim, Washington, were analyzed for mercury concentration by segmental analysis in an effort to determine whether seasonal fluctuations in mercury concentration in the hair samples can be correlated to seasonal seafood consumption. Full-length hair strands were analyzed in 1.1-cm segments representing 1 month's growth using a strong acid digestion and cold vapor atomic fluorescence analysis. It was assumed that the concentration of mercury in each segment is an indicator of the mercury body burden during the month in which the segment emerged from the scalp. Eighteen of the samples show seasonal variability, with five of the controls and one Nome resident showing winter highs while all Nome residents show summer highs. Twenty-six of the samples show an increase in mercury concentration toward the distal end of the strand regardless of month of growth. The trend of increasing mercury concentrations toward the distal end of the hair strand regardless of month of emergence, and the documented presence of elevated levels of elemental mercury in the Nome area suggest that these elevated levels may actually be due to external contamination of the hair strands by adsorption and not due to ingestion of contaminated foodstuffs such as seafood.

Lasorsa, B. (Battelle/Marine Sciences Lab., Sequim, WA (United States))

1992-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Trends in mercury concentrations in the hair of women of Nome, Alaska - Evidence of seafood consumption or abiotic absorption?  

SciTech Connect

Eighty samples of hair from women of child-bearing age from Nome, Alaska, and seven control samples from women living in Sequim, Washington, were analyzed for mercury concentration by segmental analysis in an effort to determine whether seasonal fluctuations in mercury concentration in the hair samples can be correlated to seasonal seafood consumption. Full-length hair strands were analyzed in 1.1-cm segments representing 1 month`s growth using a strong acid digestion and cold vapor atomic fluorescence analysis. It was assumed that the concentration of mercury in each segment is an indicator of the mercury body burden during the month in which the segment emerged from the scalp. Eighteen of the samples show seasonal variability, with five of the controls and one Nome resident showing winter highs while all Nome residents show summer highs. Twenty-six of the samples show an increase in mercury concentration toward the distal end of the strand regardless of month of growth. The trend of increasing mercury concentrations toward the distal end of the hair strand regardless of month of emergence, and the documented presence of elevated levels of elemental mercury in the Nome area suggest that these elevated levels may actually be due to external contamination of the hair strands by adsorption and not due to ingestion of contaminated foodstuffs such as seafood.

Lasorsa, B. [Battelle/Marine Sciences Lab., Sequim, WA (United States)

1992-06-01T23:59:59.000Z

202

Emissions, Monitoring and Control of Mercury from Subbituminous Coal-Fired Power Plants  

SciTech Connect

The Subbituminous Energy Coalition (SEC) identified a need to re-test stack gas emissions from power plants that burn subbituminous coal relative to compliance with the EPA mercury control regulations for coal-fired plants. In addition, the SEC has also identified the specialized monitoring needs associated with mercury continuous emissions monitors (CEM). The overall objectives of the program were to develop and demonstrate solutions for the unique emission characteristics found when burning subbituminous coals. The program was executed in two phases; Phase I of the project covered mercury emission testing programs at ten subbituminous coal-fired plants. Phase II compared the performance of continuous emission monitors for mercury at subbituminous coal-fired power plants and is reported separately. Western Research Institute and a number of SEC members have partnered with Eta Energy and Air Pollution Testing to assess the Phase I objective. Results of the mercury (Hg) source sampling at ten power plants burning subbituminous coal concluded Hg emissions measurements from Powder River Basin (PBR) coal-fired units showed large variations during both ICR and SEC testing. Mercury captures across the Air Pollution Control Devices (APCDs) present much more reliable numbers (i.e., the mercury captures across the APCDs are positive numbers as one would expect compared to negative removal across the APCDs for the ICR data). Three of the seven units tested in the SEC study had previously shown negative removals in the ICR testing. The average emission rate is 6.08 lb/TBtu for seven ICR units compared to 5.18 lb/TBtu for ten units in the SEC testing. Out of the ten (10) SEC units, Nelson Dewey Unit 1, burned a subbituminous coal and petcoke blend thus lowering the total emission rate by generating less elemental mercury. The major difference between the ICR and SEC data is in the APCD performance and the mercury closure around the APCD. The average mercury removal values across the APCDs are 2.1% and 39.4% with standard deviations (STDs) of 1990 and 75%, respectively for the ICR and SEC tests. This clearly demonstrates that variability is an issue irrespective of using 'similar' fuels at the plants and the same source sampling team measuring the species. The study also concluded that elemental mercury is the main Hg specie that needs to be controlled. 2004 technologies such as activated carbon injection (ACI) may capture up to 60% with double digit lb/MMacf addition of sorbent. PRB coal-fired units have an Hg input of 7-15 lb/TBtu; hence, these units must operate at over 60% mercury efficiency in order to bring the emission level below 5.8 lb/TBtu. This was non-achievable with the best technology available as of 2004. Other key findings include: (1) Conventional particulate collectors, such as Cold-side Electro-Static Precipitators (CESPs), Hot-side Electro-Static Precipitator (HESP), and Fabric Filter (FF) remove nearly all of the particulate bound mercury; (2) CESPs perform better highlighting the flue gas temperature effect on the mercury removal. Impact of speciation with flue gas cooling is apparent; (3) SDA's do not help in enhancing adsorption of mercury vapor species; and (4) Due to consistently low chlorine values in fuels, it was not possible to analyze the impact of chlorine. In summary, it is difficult to predict the speciation at two plants that burn the same fuel. Non-fuel issues, such as flue gas cooling, impact the speciation and consequently mercury capture potential.

Alan Bland; Kumar Sellakumar; Craig Cormylo

2007-08-01T23:59:59.000Z

203

2006 Mercury Control Technology Conference Proceedings  

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

Mercury Control Technology Conference Mercury Control Technology Conference December 11-13, 2006 Table of Contents Disclaimer Papers and Presentations Introduction Sorbent Injection By-Product Characterization/Management Mercury Oxidation and Co-Removal with FGD Systems Other Mercury Control Technology Panel Discussions Posters New 2006 Phase III Mercury Field Testing Projects Sorbent Injection Pretreatment of Coal Oxidation of Mercury Environmental Studies on Mercury Mercury in CUBs Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government or any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

204

Isotope Effect of Mercury Diffusion in Air  

Science Journals Connector (OSTI)

Isotope fractionation describes the separation of a reservoir with one isotope composition into fractions with different isotope compositions due to small isotopic differences in equilibrium partitioning, rates of mass transfer, or rates of transformation. ... (29) ?202Hg is the value most frequently used to examine mass dependent fractionation of mercury isotopes as 202Hg is the heaviest mercury isotope without significant isobaric interferences. ...

Paul G. Koster van Groos; Bradley K. Esser; Ross W. Williams; James R. Hunt

2013-12-23T23:59:59.000Z

205

The influence of floodplains on mercury availability  

SciTech Connect

The floodplains of the German river Elbe affect the mercury distribution in the river system in two different ways: they act both as a medium-term sink and as a long-term source. The large amounts of mercury deposited onto the floodplains during annual floodings are first effectively fixed in the soils, rendering them basically unavailable. Sequential extraction experiments reveal that only a small fraction of the mercury (< 3%) is present in available forms, whereas the vast majority is associated with humic substances or present in sulfidic binding forms. After deposition, a small fraction of the total mercury is gradually remobilized into the aqueous phase bound passively to water-soluble humic acids. The availability of mercury in these complexes is still low, since environmental influences such as changes in pH or redox potential and competition with other cations do not cause any mercury liberation. In the next step, reactions in the aqueous phase lead to the formation of the highly available volatile species Hg{sup 0} and dimethylmercury (DMM). Their evaporation gives rise to a strong mercury flux from the floodplains into the atmosphere. Preliminary mass balances indicate that the majority of the deposited mercury stays bound in the floodplain soils, while small amounts are emitted back into the river`s ecosystem. Atmospheric emission is more important as a remobilization pathway than aquatic export.

Wallschlaeger, D.; Wilken, R.D. [GKSS Research Center, Geesthacht (Germany). Inst. of Physical and Chemical Analytics

1997-09-01T23:59:59.000Z

206

Mercury Chamber NF-IDS Meeting  

E-Print Network (OSTI)

-Battelle for the U.S. Department of Energy Mercury Chamber Update Oct 2011 Starting Point: Coil and Shielding Concept IDS120H #12;3 Managed by UT-Battelle for the U.S. Department of Energy Mercury Chamber Update Oct 2011 · Penetrations (ports) into chamber ­ Nozzle ­ Hg drains (overflow and maintenance) ­ Vents (in and out) ­ Beam

McDonald, Kirk

207

Milestone Project Demonstrates Innovative Mercury Emissions Reduction  

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

Milestone Project Demonstrates Innovative Mercury Emissions Milestone Project Demonstrates Innovative Mercury Emissions Reduction Technology Milestone Project Demonstrates Innovative Mercury Emissions Reduction Technology January 12, 2010 - 12:00pm Addthis Washington, DC - An innovative technology that could potentially help some coal-based power generation facilities comply with anticipated new mercury emissions standards was successfully demonstrated in a recently concluded milestone project at a Michigan power plant. Under a cooperative agreement with the U.S. Department of Energy's (DOE's) National Energy Technology Laboratory (NETL), WE Energies demonstrated the TOXECON(TM) process in a $52.9million project at the Presque Isle Power Plant in Marquette, Mich. TOXECON is a relatively cost-effective option for achieving significant reductions in mercury emissions and increasing the

208

Effect of salinity on methylation of mercury  

SciTech Connect

Monomethyl and dimethylmercury are potent neurotoxins subject to biomagnification in food webs. This fact was tragically demonstrated by the Minamata and Niigata poisoning incidents in Japan in which 168 persons who ate seafood from mercury polluted waters were poisoned, 52 fatally. Shortly after these two incidents, work conducted in freshwater environments demonstrated the microbial conversion of inorganic and phenylmercury compounds to mono- and di-methylmercury. Consideration of some fragmentary evidence from the literature, however, indicates that the rate and the significance of microbial methylation of mercury in freshwater and saltwater environments may not be the same. A demonstrated relationship between mercury methylation rates and water salinity would greatly influence our thinking about mercury pollution effects in marine versus freshwater environments. Since we were unable to locate published reports on this subject, we are investigating the influence of salinity on the rate of mercury methylation in an estuarine sediment.

Blum, J.E.; Bartha, R.

1980-09-01T23:59:59.000Z

209

MERCURY HANDLING FOR THE TARGET SYSTEM FOR A MUON COLLIDER  

E-Print Network (OSTI)

MERCURY HANDLING FOR THE TARGET SYSTEM FOR A MUON COLLIDER Van Graves , ORNL, Oak Ridge, TN 37830 Factory is a free-stream mercury jet within a 20-T magnetic field being impacted by an 8-GeV proton beam. A pool of mercury serves as a receiving reservoir for the mercury and a dump for the unexpended proton

McDonald, Kirk

210

Thursday, March 15, 2007 POSTER SESSION II: MERCURY  

E-Print Network (OSTI)

Thursday, March 15, 2007 POSTER SESSION II: MERCURY 6:30 p.m. Fitness Center Dombard A. J. Hauck S. A. II Despinning Plus Global Contraction and the Orientation of Lobate Scarps on Mercury [#2026] We thermal models of Mercury. King S. D. A Possible Connection Between Convection in Mercury's Mantle

Rathbun, Julie A.

211

2003 Mercury Computer Systems, Inc. Optimizing System Compute  

E-Print Network (OSTI)

© 2003 Mercury Computer Systems, Inc. Optimizing System Compute Density for Deployed HPEC Electronics Engineering Mercury Computer Systems, Inc. rbanton@mc.com Richard Jaenicke, Director, Product Marketing Mercury Computer Systems, Inc. rjaenicke@mc.com #12;2 © 2002 Mercury Computer Systems, Inc.© 2003

Kepner, Jeremy

212

Laser Altimeter Observations from MESSENGER's First Mercury Flyby  

E-Print Network (OSTI)

REPORT Laser Altimeter Observations from MESSENGER's First Mercury Flyby Maria T. Zuber,1 * David E Barnouin-Jha,8 John K. Harmon10 A 3200-kilometers-long profile of Mercury by the Mercury Laser Altimeter compensated. Sampled craters on Mercury are shallower than their counterparts on the Moon, at least in part

Hauck II, Steven A.

213

Sources to Seafood: Mercury Pollution in the Marine Environment  

E-Print Network (OSTI)

Sources to Seafood: Mercury Pollution in the Marine Environment The Coastal and Marine Mercury a series of scientific papers on mercury pollution in the marine environment from sources to seafood and in June 2012 in Environmental Health Perspectives. The summary report, Sources to Seafood: Mercury

214

Geothermal Exploration Using Surface Mercury Geochemistry | Open Energy  

Open Energy Info (EERE)

Surface Mercury Geochemistry Surface Mercury Geochemistry Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geothermal Exploration Using Surface Mercury Geochemistry Details Activities (5) Areas (3) Regions (0) Abstract: Shallow, soil-mercury surveys can be used effectively in exploration for geothermal resources. Soil-mercury data from six areas in Nevada, California and New Mexico are analyzed using contour maps, histogram and probability graphs. Plotting on probability graphs allows background and anomalous populations to be resolved even when considerable overlap between populations is present. As is shown in several examples, separate soil-mercury populations can be plausibly interpreted. Mercury data can significantly enhance the structural understanding of a prospect

215

Figure 2: The mercury jet target geometry. The proton beam and mercury jet cross at z=-37.5 cm.  

E-Print Network (OSTI)

Figure 2: The mercury jet target geometry. The proton beam and mercury jet cross at z=-37.5 cm. Figure 3: The layout of multiple proton beam entry directions relative to mercury jet at z=-75 cm. A PION of a free liquid mercury jet with an intense proton beam. We study the variation of meson production

McDonald, Kirk

216

Mercury Lamps Recycling Fluorescent light-tubes, compact fluorescent bulbs, mercury and sodium vapor lamps, ultraviolet and  

E-Print Network (OSTI)

Mercury Lamps Recycling Fluorescent light-tubes, compact fluorescent bulbs, mercury and sodium vapor lamps, ultraviolet and HID (high-intensity discharge) lamps and all other mercury containing labeled for shipment to a recycling plant for mercury, glass and aluminum recovery. The beneficial re

Baker, Chris I.

217

Survey of mercury, cadmium and lead content of household batteries  

SciTech Connect

Highlights: A well selected sample of 146 batteries was analysed for its heavy metals content. A comparison was made between heavy metals contents in batteries in 2006 and 2011. No significant change after implementation of the new EU Batteries Directive. Severe differences in heavy metal contents were found in different battery-types. - Abstract: The objective of this work was to provide updated information on the development of the potential impact of heavy metal containing batteries on municipal waste and battery recycling processes following transposition of the new EU Batteries Directive 2006/66/EC. A representative sample of 146 different types of commercially available dry and button cells as well as lithium-ion accumulators for mobile phones were analysed for their mercury (Hg)-, cadmium (Cd)- and lead (Pb)-contents. The methods used for preparing the cells and analysing the heavy metals Hg, Cd, and Pb were either developed during a former study or newly developed. Several batteries contained higher mass fractions of mercury or cadmium than the EU limits. Only half of the batteries with mercury and/or lead fractions above the marking thresholds were labelled. Alkalinemanganese mono-cells and Li-ion accumulators, on average, contained the lowest heavy metal concentrations, while zinccarbon batteries, on average, contained the highest levels.

Recknagel, Sebastian, E-mail: sebastian.recknagel@bam.de [BAM Federal Institute for Materials Research and Testing, Department of Analytical Chemistry, Reference Materials, Richard-Willsttter-Strae 11, D-12489 Berlin (Germany); Radant, Hendrik [BAM Federal Institute for Materials Research and Testing, Department of Analytical Chemistry, Reference Materials, Richard-Willsttter-Strae 11, D-12489 Berlin (Germany); Kohlmeyer, Regina [German Federal Environment Agency (UBA), Section III 1.6 Extended Producer Responsibility, Wrlitzer Platz 1, D-06844 Dessau-Rolau (Germany)

2014-01-15T23:59:59.000Z

218

Utilization of Partially Gasified Coal for Mercury Removal  

SciTech Connect

In this project, General Electric Energy and Environmental Research Corporation (EER) developed a novel mercury (Hg) control technology in which the sorbent for gas-phase Hg removal is produced from coal in a gasification process in-situ at a coal burning plant. The main objective of this project was to obtain technical information necessary for moving the technology from pilot-scale testing to a full-scale demonstration. A pilot-scale gasifier was used to generate sorbents from both bituminous and subbituminous coals. Once the conditions for optimizing sorbent surface area were identified, sorbents with the highest surface area were tested in a pilot-scale combustion tunnel for their effectiveness in removing Hg from coal-based flue gas. It was determined that the highest surface area sorbents generated from the gasifier process ({approx}600 m{sup 2}/g) had about 70%-85% of the reactivity of activated carbon at the same injection rate (lb/ACF), but were effective in removing 70% mercury at injection rates about 50% higher than that of commercially available activated carbon. In addition, mercury removal rates of up to 95% were demonstrated at higher sorbent injection rates. Overall, the results of the pilot-scale tests achieved the program goals, which were to achieve at least 70% Hg removal from baseline emissions levels at 25% or less of the cost of activated carbon injection.

Chris Samuelson; Peter Maly; David Moyeda

2008-09-09T23:59:59.000Z

219

Human exposure to mercury: A critical assessment of the evidence of adverse health effects  

SciTech Connect

The ubiquitous nature of mercury in the environment, its global atmospheric cycling, and its toxicity to humans at levels that are uncomfortably close to exposures experienced by a proportion of the population are some of the current concerns associated with this pollutant. The purpose of this review is to critically evaluate the scientific quality of published reports involving human exposures to mercury and associated health outcomes as an aid in the risk evaluation of this chemical. A comprehensive review of the scientific literature involving human exposures to mercury was performed and each publication evaluated using a defined set of criteria that are considered standards in epidemiologic and toxicologic research. Severe, sometimes fatal, effects of mercury exposure at high levels were primarily reported as case studies. The disasters in Minamata, Japan, in the 1950s and in Iraq in 1971-1972 clearly demonstrated neurologic effects associated with ingestion of methylmercury both in adults and in infants exposed in utero. The effects were convincingly Associated with methylmercury ingestion, despite limitations of the study design. Several well-conducted studies have investigated the effects of methylmercury at levels below those in the Iraq incident but have not provided clear evidence of an effect. The lower end of the dose-response curve constructed from the Iraq data therefore still needs to be confirmed. The studies of mercury exposure in the workplace were mainly of elemental or inorganic mercury, and effects that were observed at relatively low exposure levels were primarily neurologic and renal. Several studies have investigated effects associated with dental amalgam but have been rated as inconclusive because of methodologic deficiencies. In our overall evaluation, 29 of 110 occupational studies and 20 of 54 studies where exposure occurred in the natural environment provided at least suggestive evidence of an exposure-related effect. 259 refs., 4 tabs.

Ratcliffe, H.E.; Swanson, G.M.; Fischer, L.J. [Michigan State Univ., East Lansing, MI (United States)

1996-10-25T23:59:59.000Z

220

Development of an electromagnetically actuated mercury microvalve  

SciTech Connect

The development of microscale fluid handling components has been recognized as a crucial element in the design of microscale chemical detection systems. Recently, work has been undertaken at Sandia National Laboratories to construct a valve that uses a small mercury droplet to control the flow of gas through capillary passages. Electromagnetic forces that are provided by small permanent magnets and a current supply are used to drive the mercury into position. Driving the mercury droplet into a tapered passage halts gas flow through a capillary, while surface tension forces prevent the mercury from passing through the passage. Models have been developed to describe the movement of the mercury droplet and the sealing of the gas passage, and millimeter-scale units have been tested to explore design options. Predictions from the model show that a valve with 10 micron sized features can seal against pressures up to 1.5 atmospheres. Experiments have highlighted the promise of mercury valves and demonstrated problems that can arise from contamination of the mercury.

Adkins, D.R.; Wong, C.C.

1998-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

SORBENT DEVELOPMENT FOR MERCURY CONTROL. Final topical report including semiannual for January 1, 1998 through June 30, 1998.  

SciTech Connect

The US Environmental Protection Agency (EPA) draft Mercury Study Report to Congress (1) estimated anthropogenic mercury emissions to be 253 tons/yr in the US, with the majority (216 tons/yr) from combustion sources. The three main combustion sources listed were coal (72 tons/yr), medical waste incinerators (65 tons/yr), and municipal waste combustors (64 tons/yr). The emissions from both medical waste incinerators and municipal waste combustors were recently regulated, which, together with the reduction of mercury in consumer products such as batteries and fluorescent lights, has already reduced the emissions from these sources, as stated in the final EPA Mercury Report to Congress (2). EPA now estimates total point-source mercury emissions to be 158 tons/yr, with coal remaining at 72 tons/yr, while medical waste incinerators are down to 16 tons/yr and municipal waste combustors are at 30 tons/yr. Coal is now the primary source of anthropogenic mercury emissions in the US, accounting for 46%. In addition, the use of coal in the US has been increasing every year and passed the 1-billion-ton-per-year mark for the first time in 1997 (3). At the current rate of increase, coal consumption would reach 1.4 billion tons annually by the year 2020. On a worldwide basis, the projected increase in coal usage over the next two decades in China, India, and Indonesia will dwarf the current US coal consumption level. Therefore, in the US coal will be the dominant source of mercury emissions and worldwide coal may be the cause of significantly increased mercury emissions unless an effective control strategy is implemented. However, much uncertainty remains over the most technically sound and cost-effective approach for reducing mercury emissions from coal-fired boilers, and a number of critical research needs will have to be met to develop better control (2).

David J. Hassett; Edwin S. Olson; Grant E. Dunham; Ramesh K. Sharma; Ronald C. Timpe; Stanley J. Miller

1998-10-01T23:59:59.000Z

222

OXIDATION OF MERCURY ACROSS SCR CATALYSTS IN COAL-FIRED POWER PLANTS BURNING LOW RANK FUELS  

SciTech Connect

The objectives of this program were to measure the oxidation of mercury in flue gas across SCR catalyst in a coal-fired power plant burning low rank fuels using a slipstream reactor containing multiple commercial catalysts in parallel and to develop a greater understanding of mercury oxidation across SCR catalysts in the form of a simple model. The Electric Power Research Institute (EPRI) and Argillon GmbH provided co-funding for this program. REI used a multicatalyst slipstream reactor to determine oxidation of mercury across five commercial SCR catalysts at a power plant that burned a blend of 87% subbituminous coal and 13% bituminous coal. The chlorine content of the blend was 100 to 240 {micro}g/g on a dry basis. Mercury measurements were carried out when the catalysts were relatively new, corresponding to about 300 hours of operation and again after 2,200 hours of operation. NO{sub x}, O{sub 2} and gaseous mercury speciation at the inlet and at the outlet of each catalyst chamber were measured. In general, the catalysts all appeared capable of achieving about 90% NO{sub x} reduction at a space velocity of 3,000 hr{sup -1} when new, which is typical of full-scale installations; after 2,200 hours exposure to flue gas, some of the catalysts appeared to lose NO{sub x} activity. For the fresh commercial catalysts, oxidation of mercury was in the range of 25% to 65% at typical full-scale space velocities. A blank monolith showed no oxidation of mercury under any conditions. All catalysts showed higher mercury oxidation without ammonia, consistent with full-scale measurements. After exposure to flue gas for 2,200 hours, some of the catalysts showed reduced levels of mercury oxidation relative to the initial levels of oxidation. A model of Hg oxidation across SCRs was formulated based on full-scale data. The model took into account the effects of temperature, space velocity, catalyst type and HCl concentration in the flue gas.

Constance Senior

2004-12-31T23:59:59.000Z

223

Mercury cleanup efforts intensify | Y-12 National Security Complex  

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

Mercury cleanup efforts ... Mercury cleanup efforts ... Mercury cleanup efforts intensify Posted: February 11, 2013 - 3:31pm | Y-12 Report | Volume 9, Issue 2 | 2013 Millions of pounds of mercury were required to support Y-12's post-World War II mission of separating lithium isotopes. Cleaning up the toxic heavy metal poses many challenges, but what Y-12 is learning could help conquer mercury pollution worldwide. There's a reason you won't find mercury in many thermometers these days. Mercury is a heavy metal that occurs in several chemical forms, all of which can produce toxic effects in high enough doses. Mercury was used in the column exchange process, which Y-12 employed to produce lithium-6 from 1953 to 1962. Through process spills, system leaks and surface runoff, some 700,000 pounds of mercury have been lost to the

224

NETL: Mercury Emissions Control Technologies - Enhanced High Temperature  

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

Enhanced High Temperature Mercury Oxidation and Enhanced High Temperature Mercury Oxidation and In-Situ Active Carbon Generation for Low Cost Mercury Capture Mercury oxidation phenomenon and the studies of this phenomenon have generally focused on lower temperatures, typically below 650°F. This has been based on the mercury vapor equilibrium speciation curve. The baseline extents of mercury oxidation as reported in the ICR dataset and observed during subsequent tests has shown a tremendous amount of scatter. The objective of this project is to examine, establish and demonstrate the effect of higher temperature kinetics on mercury oxidation rates. Further, it is the objective of this project to demonstrate how the inherent mercury oxidation kinetics can be influenced to dramatically increase the mercury oxidation.

225

Mercury contaminated sediment sitesAn evaluation of remedial options  

SciTech Connect

Mercury (Hg) is a naturally-occurring element that is ubiquitous in the aquatic environment. Though efforts have been made in recent years to decrease Hg emissions, historically-emitted Hg can be retained in the sediments of aquatic bodies where they may be slowly converted to methylmercury (MeHg). Consequently, Hg in historically-contaminated sediments can result in high levels of significant exposure for aquatic species, wildlife and human populations consuming fish. Even if source control of contaminated wastewater is achievable, it may take a very long time, perhaps decades, for Hg-contaminated aquatic systems to reach relatively safe Hg levels in both water and surface sediment naturally. It may take even longer if Hg is present at higher concentration levels in deep sediment. Hg contaminated sediment results from previous releases or ongoing contributions from sources that are difficult to identify. Due to human activities or physical, chemical, or biological processes (e.g. hydrodynamic flows, bioturbation, molecular diffusion, and chemical transformation), the buried Hg can be remobilized into the overlying water. Hg speciation in the water column and sediments critically affect the reactivity (i.e. conversion of inorganic Hg(II) to MeHg), transport, and its exposure to living organisms. Also, geochemical conditions affect the activity of methylating bacteria and its availability for methylation. This review paper discusses remedial considerations (e.g. key chemical factors in fate and transport of Hg, source characterization and control, environmental management procedures, remediation options, modeling tools) and includes practical case studies for cleaning up Hg-contaminated sediment sites. -- Highlights: ? Managing mercury-contaminated sediment sites are challenging to remediate. ? Remediation technologies are making a difference in managing these sites. ? Partitioning plays a dominant role in the distribution of mercury species. ? Mathematical models can be used to help us understand the chemistry and processes.

Randall, Paul M., E-mail: randall.paul@epa.gov [U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, 26 West Martin Luther King Drive, Cincinnati, OH 45268 (United States); Chattopadhyay, Sandip, E-mail: Sandip.Chattopadhyay@tetratech.com [Tetra Tech, Inc., 250 West Court Street, Suite 200W, Cincinnati, OH 45202 (United States)] [Tetra Tech, Inc., 250 West Court Street, Suite 200W, Cincinnati, OH 45202 (United States)

2013-08-15T23:59:59.000Z

226

NETL: News Release - Meeting Mercury Standards  

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

June 18, 2001 June 18, 2001 Meeting Mercury Standards DOE Selects 6 Projects to Develop Cost-Saving Technologies for Curbing Mercury Emissions from Coal Power Plants Power Plant with Fish - MORGANTOWN, WV - With President Bush's National Energy Plan calling for mandatory reductions in the release of mercury from electric power plants - part of the Plan's multi-pollutant reduction strategy - the U.S. Department of Energy today named six new projects to develop innovative technologies that can curb mercury emissions from coal plants more effectively and at a fraction of today's costs. The winning projects were submitted by the University of North Dakota's Energy & Environmental Research Center in Grand Forks; URS Group. Inc., of Austin, TX; CONSOL, Inc., of Library, PA; Southern Research Institute in

227

ZZ Mercury Storage Book.indb  

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

2 2 Comment Response Document Environmental Impact Statement Final Final Environmental Impact Statement DOE/EIS-0423 January 2011 Long-Term Management and Storage of Elemental Mercury Long-Term Management and Storage of Elemental Mercury For additional information on this Final Mercury Storage EIS, contact: AVAILABILITY OF THIS FINAL LONG-TERM MANAGEMENT AND STORAGE OF ELEMENTAL MERCURY ENVIRONMENTAL IMPACT STATEMENT David Levenstein, Document Manager Office of Environmental Compliance (EM-41) U.S. Department of Energy Post Office Box 2612 Germantown, MD 20874 Website: http://www.mercurystorageeis.com Fax: 877-274-5462 Printed with soy ink on recycled paper Cover Sheet Lead Agency: U.S. Department of Energy (DOE) Cooperating Agencies: U.S. Environmental Protection Agency (EPA)

228

Mercury sorbent delivery system for flue gas  

DOE Patents (OSTI)

The invention presents a device for the removal of elemental mercury from flue gas streams utilizing a layer of activated carbon particles contained within the filter fabric of a filter bag for use in a flue gas scrubbing system.

Klunder; ,Edgar B. (Bethel Park, PA)

2009-02-24T23:59:59.000Z

229

Future trends in environmental mercury concentrations: implications  

E-Print Network (OSTI)

Future trends in environmental mercury concentrations: implications for prevention strategies interactions among natural and human climate system components; objectively assess uncertainty in economic, monitor and verify greenhouse gas emissions and climatic impacts. This reprint is one of a series intended

230

Remediation of Mercury and Industrial Contaminants  

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

The mission of the Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative is to control the flux of contaminants in soil and water environments for the purpose of...

231

Filter for isotopic alteration of mercury vapor  

DOE Patents (OSTI)

A filter for enriching the .sup.196 Hg content of mercury, including a reactor, a low pressure electric discharge lamp containing a fill of mercury and an inert gas. A filter is arranged concentrically around the lamp. The reactor is arranged around said filter, whereby radiation from said lamp passes through the filter and into said reactor. The lamp, the filter and the reactor are formed of quartz, and are transparent to ultraviolet light. The .sup.196 Hg concentration in the mercury fill is less than that which is present in naturally occurring mercury, that is less than about 0.146 atomic weight percent. Hydrogen is also included in the fill and serves as a quenching gas in the filter, the hydrogen also serving to prevent disposition of a dark coating on the interior of the filter.

Grossman, Mark W. (Belmont, MA); George, William A. (Gloucestor, MA)

1989-01-01T23:59:59.000Z

232

Filter for isotopic alteration of mercury vapor  

DOE Patents (OSTI)

A filter is described for enriching the [sup 196]Hg content of mercury, including a reactor, a low pressure electric discharge lamp containing a fill of mercury and an inert gas. A filter is arranged concentrically around the lamp. The reactor is arranged around said filter, whereby radiation from said lamp passes through the filter and into said reactor. The lamp, the filter and the reactor are formed of quartz, and are transparent to ultraviolet light. The [sup 196]Hg concentration in the mercury fill is less than that which is present in naturally occurring mercury, that is, less than about 0.146 atomic weight percent. Hydrogen is also included in the fill and serves as a quenching gas in the filter, the hydrogen also serving to prevent disposition of a dark coating on the interior of the filter. 9 figs.

Grossman, M.W.; George, W.A.

1989-06-13T23:59:59.000Z

233

Mercury's Magnetosphere After MESSENGER's First Flyby  

Science Journals Connector (OSTI)

...IMF is unfavorable to dayside magnetic reconnection with Mercury's magnetic field and greatly limits the rate of solar wind energy transfer across the MP (2). The earlier southward IMF intervals before MESSENGER's entry into the magnetosphere...

James A. Slavin; Mario H. Acua; Brian J. Anderson; Daniel N. Baker; Mehdi Benna; George Gloeckler; Robert E. Gold; George C. Ho; Rosemary M. Killen; Haje Korth; Stamatios M. Krimigis; Ralph L. McNutt; Jr.; Larry R. Nittler; Jim M. Raines; David Schriver; Sean C. Solomon; Richard D. Starr; Pavel Trvn?ek; Thomas H. Zurbuchen

2008-07-04T23:59:59.000Z

234

THE CONCENTRATION OF MERCURY, COPPER, NICKEL, SILVER, CADMIUM, AND LEAD IN THE NORTHERN ADRIATIC  

E-Print Network (OSTI)

for the Mediterranean 1972). Recent research has drawn attention to the increasing hazards of heavy metal pollution of the Adriatic, and already the level of some heavy metals (e.g. mercury) in water and edible marine organisms pollutant loads into the northern Adriatic. The Po alone is the second largest and perhaps most heavily

235

Toxecon Retrofit for Mercury and Mulit-Pollutant Control on Three 90-MW Coal-Fired Boilers  

SciTech Connect

This U.S. Department of Energy (DOE) Clean Coal Power Initiative (CCPI) project was based on a cooperative agreement between We Energies and the DOE Office of Fossil Energy's National Energy Technology Laboratory (NETL) to design, install, evaluate, and demonstrate the EPRI-patented TOXECON{trademark} air pollution control process. Project partners included Cummins & Barnard, ADA-ES, and the Electric Power Research Institute (EPRI). The primary goal of this project was to reduce mercury emissions from three 90-MW units that burn Powder River Basin coal at the We Energies Presque Isle Power Plant in Marquette, Michigan. Additional goals were to reduce nitrogen oxide (NO{sub x}), sulfur dioxide (SO{sub 2}), and particulate matter emissions; allow reuse and sale of fly ash; advance commercialization of the technology; demonstrate a reliable mercury continuous emission monitor (CEM) suitable for use at power plants; and demonstrate recovery of mercury from the sorbent. Mercury was controlled by injection of activated carbon upstream of the TOXECON{trademark} baghouse, which achieved more than 90% removal on average over a 44-month period. During a two-week test involving trona injection, SO{sub 2} emissions were reduced by 70%, although no coincident removal of NOx was achieved. The TOXECON{trademark} baghouse also provided enhanced particulate control, particularly during startup of the boilers. On this project, mercury CEMs were developed and tested in collaboration with Thermo Fisher Scientific, resulting in a reliable CEM that could be used in the power plant environment and that could measure mercury as low as 0.1 {micro}g/m{sup 3}. Sorbents were injected downstream of the primary particulate collection device, allowing for continued sale and beneficial use of captured fly ash. Two methods for recovering mercury using thermal desorption on the TOXECON{trademark} PAC/ash mixture were successfully tested during this program. Two methods for using the TOXECON{trademark} PAC/ash mixture in structural concrete were also successfully developed and tested. This project demonstrated a significant reduction in the rate of emissions from Presque Isle Units 7, 8, and 9, and substantial progress toward establishing the design criteria for one of the most promising mercury control retrofit technologies currently available. The Levelized Cost for 90% mercury removal at this site was calculated at $77,031 per pound of mercury removed with a capital cost of $63,189 per pound of mercury removed. Mercury removal at the Presque Isle Power Plant averages approximately 97 pounds per year.

Steven Derenne; Robin Stewart

2009-09-30T23:59:59.000Z

236

Symplectic Integrator Mercury: Bug Report  

E-Print Network (OSTI)

We report on a problem found in MERCURY, a hybrid symplectic integrator used for dynamical problems in Astronomy. The variable that keeps track of bodies' statuses is uninitialised, which can result in bodies disappearing from simulations in a non-physical manner. Some FORTRAN compilers implicitly initialise variables, preventing simulations from having this problem. With other compilers, simulations with a suitably large maximum number of bodies parameter value are also unaffected. Otherwise, the problem manifests at the first event after the integrator is started, whether from scratch or continuing a previously stopped simulation. Although the problem does not manifest in some conditions, explicitly initialising the variable solves the problem in a permanent and unconditional manner.

K. de Souza Torres; D. R. Anderson

2008-08-04T23:59:59.000Z

237

Mercury bioaccumulation in Lavaca Bay, Texas  

E-Print Network (OSTI)

MERCURY BIOACCUMULATION IN LAVACA BAY, TEXAS A Thesis by SALLY JO PALMER Submitted to the Office of Graduate Studies of Texas ABM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1992 Major... Subject: Oceanography MERCURY BIOACCUMULATION IN LAVACA BAY, TEXAS A Thesis by SALLY JO PALMER Approved as to style and content by: obby J. Pr y (Chair of Committee) Robe J. Tayl (Member) owell (Member) Marvin W. Rowe (Member) Gi bert T. Rowe...

Palmer, Sally Jo

2012-06-07T23:59:59.000Z

238

Modeling mercury in power plant plumes  

SciTech Connect

Measurements of speciated mercury (Hg) downwind of coal-fired power plants suggest that the Hg{sup II}/(Hg{sup 0} + Hg{sup II}) ratio decreases significantly between the point of emission and the downwind ground-level measurement site, but that the SO{sub 2}/(Hg{sup 0} + Hg{sup II}) ratio is conserved. The authors simulated nine power plant plume events with the Reactive & Optics Model of Emissions (ROME), a reactive plume model that includes a comprehensive treatment of plume dispersion, transformation, and deposition. The model simulations fail to reproduce such a depletion in Hg{sup II}. A sensitivity study of the impact of the Hg{sup II} dry deposition velocity shows that a difference in dry deposition alone cannot explain the disparity. Similarly, a sensitivity study of the impact of cloud chemistry on results shows that the effect of clouds on Hg chemistry has only minimal impact. Possible explanations include Hg{sup II} reduction to Hg{sup 0} in the plume, rapid reduction of Hg{sup II} to Hg{sup 0} on ground surfaces, and/or an overestimation of the Hg{sup II} fraction in the power plant emissions. The authors propose that a chemical reaction not included in current models of atmospheric mercury reduces Hg{sup II} to Hg{sup 0} in coal-fired power plant plumes. The incorporation of two possible reduction pathways for Hg{sup II} shows better agreement between the model simulations and the ambient measurements. These potential Hg{sup II} to Hg{sup 0} reactions need to be studied in the laboratory to investigate this hypothesis. Because the speciation of Hg has a significant effect on Hg deposition, models of the fate and transport of atmospheric Hg may need to be modified to account for the reduction of Hg{sup II} in coal-fired power plant plumes if such a reaction is confirmed in further experimental investigations. 31 refs., 2 figs., 6 tabs.

Kristen Lohman; Christian Seigneur; Eric Edgerton; John Jansen [Atmospheric & Environmental Research, Inc., San Ramon, CA (United States)

2006-06-15T23:59:59.000Z

239

Glutathione peroxidase response in tissues of rats fed diets containing fish protein concentrate prepared from shark flesh of known mercury and selenium contents  

SciTech Connect

Studies have been reported using experimental animals and synthetic diets containing selenium and mercury compounds to demonstrate detoxification of mercury by selenium. The mechanism of detoxification remains obscure. Most experiments have involved the use of high levels of both elements and relied on the observation of gross symptoms. The measurement of enzyme systems may be useful in detecting effects of mercury at a lower, subclinical level and in elucidating the biochemistry of mercury/selenium interactions. The activity of the selenoenzyme glutathione peroxidase (GSH-Px) in rats is dependent on dietary selenium and attempts have been made to use this enzyme as an indicator of mercury/selenium interactions. The research described in this paper was designed to investigate the effect of mercury, in the form and amounts which occur naturally in seafood, on the availability of selenium at levels approximating the nutritional requirement. In anticipation of mercury lowering the GSH-Px response a range of selenium concentrations was used, from nutritional deficiency to three times the nutritional requirement.

Thrower, S.J. (Commonwealth Scientific and Industrial Research Organization, Hobart, Australia); Andrewartha, K.A.

1981-01-01T23:59:59.000Z

240

Evaluation of Sorbent Injection for Mercury Control  

SciTech Connect

The power industry in the U.S. is faced with meeting new regulations to reduce the emissions of mercury compounds from coal-fired plants. These regulations are directed at the existing fleet of nearly 1,100 boilers. These plants are relatively old with an average age of over 40 years. Although most of these units are capable of operating for many additional years, there is a desire to minimize large capital expenditures because of the reduced (and unknown) remaining life of the plant to amortize the project. Injecting a sorbent such as powdered activated carbon into the flue gas represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. This is the final site report for tests conducted at Laramie River Station Unit 3, one of five sites evaluated in this DOE/NETL program. The overall objective of the test program is to evaluate the capabilities of activated carbon injection at five plants: Sunflower Electric's Holcomb Station Unit 1, AmerenUE's Meramec Station Unit 2, Missouri Basin Power Project's Laramie River Station Unit 3, Detroit Edison's Monroe Power Plant Unit 4, and AEP's Conesville Station Unit 6. These plants have configurations that together represent 78% of the existing coal-fired generation plants. The goals for the program established by DOE/NETL are to reduce the uncontrolled mercury emissions by 50 to 70% at a cost 25 to 50% lower than the benchmark established by DOE of $60,000/lb mercury removed. The goals of the program were exceeded at Laramie River Station by achieving over 90% mercury removal at a sorbent cost of $3,980/lb ($660/oz) mercury removed for a coal mercury content of 7.9 lb/TBtu.

Sharon Sjostrom

2005-12-30T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

DOE Issues Final Mercury Storage Environmental Impact Statement: Texas Site  

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

DOE Issues Final Mercury Storage Environmental Impact Statement: DOE Issues Final Mercury Storage Environmental Impact Statement: Texas Site Is Preferred for Long-Term Mercury Storage DOE Issues Final Mercury Storage Environmental Impact Statement: Texas Site Is Preferred for Long-Term Mercury Storage January 19, 2011 - 12:00pm Addthis Media Contact (202) 586-4940 WASHINGTON - The Department of Energy has prepared a Final Long-Term Management and Storage of Elemental Mercury Environmental Impact Statement to analyze the potential environmental, human health, and socioeconomic impacts of elemental mercury storage at seven locations. Based on these factors, DOE identified the Waste Control Specialists, LLC, site near Andrews, Texas, as the preferred alternative for long-term management and storage of mercury. DOE will consider the environmental impact information presented in this

242

Dissolved gaseous mercury behavior in shallow water estuaries  

E-Print Network (OSTI)

The formation of dissolved gaseous mercury (DGM) can be an important pathway for mercury removal from an aquatic environment. DGM evasional fluxes from an aquatic system can account for up to 95% of atmospheric Hg and its deposition pathways. While...

Landin, Charles Melchor

2009-05-15T23:59:59.000Z

243

Mitigation and Remediation of Mercury Contamination at the Y...  

Office of Environmental Management (EM)

Mitigation and Remediation of Mercury Contamination at the Y-12 Plant Oak Ridge Mitigation and Remediation of Mercury Contamination at the Y-12 Plant Oak Ridge Full Document and...

244

Mercury in the sediments of the Pallanza Basin  

Science Journals Connector (OSTI)

... Pallanza Basin of Lago Maggiore, Italy, in 1970 have been analysed for mercury, using flameless atomic absorption spectrophotometry. The concentration of mercury in the Maggiore sediments proved to be ...

V. DAMIANI; R. L. THOMAS

1974-10-25T23:59:59.000Z

245

Emission factor of mercury from coal-fired power stations  

Science Journals Connector (OSTI)

Mercury emission from coal-fired power stations, situated in Poland in the Silesian region ... mercury in the consumed coal and in combustion gas, used in this research, are described. ... the air from coal combu...

Wojciech Mniszek

1994-11-01T23:59:59.000Z

246

Seismic effects of the Caloris basin impact, Mercury  

E-Print Network (OSTI)

Striking geological features on Mercury's surface have been linked to tectonic disruption associated with the Caloris impact and have the potential to provide information on the interior structure of Mercury. The unusual ...

L, Jiangning

2011-01-01T23:59:59.000Z

247

Removal of mercury from coal via a microbial pretreatment process  

SciTech Connect

A process for the removal of mercury from coal prior to combustion is disclosed. The process is based on use of microorganisms to oxidize iron, sulfur and other species binding mercury within the coal, followed by volatilization of mercury by the microorganisms. The microorganisms are from a class of iron and/or sulfur oxidizing bacteria. The process involves contacting coal with the bacteria in a batch or continuous manner. The mercury is first solubilized from the coal, followed by microbial reduction to elemental mercury, which is stripped off by sparging gas and captured by a mercury recovery unit, giving mercury-free coal. The mercury can be recovered in pure form from the sorbents via additional processing.

Borole, Abhijeet P. (Knoxville, TN); Hamilton, Choo Y. (Knoxville, TN)

2011-08-16T23:59:59.000Z

248

Mercury Vapor At Kawaihae Area (Thomas, 1986) | Open Energy Information  

Open Energy Info (EERE)

Mercury Vapor At Kawaihae Area (Thomas, 1986) Mercury Vapor At Kawaihae Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Kawaihae Area (Thomas, 1986) Exploration Activity Details Location Kawaihae Area Exploration Technique Mercury Vapor Activity Date Usefulness not useful DOE-funding Unknown Notes The soil geochemistry yielded quite complex patterns of mercury concentrations and radonemanation rates within the survey area (Cox and Cuff, 1981c). Mercury concentrations (Fig. 38) showed a general minimum along the Kawaihae-Waimea roads and a broad trend of increasing mercury concentrations toward both the north and south. There is no correlation apparent between the mercury patterns and either the resistivity sounding data or the surface geology in the area. The radon emanometry data (Fig.

249

Carbon Nanotube-Silver Composite for Mercury Capture and Analysis  

Science Journals Connector (OSTI)

The mechanisms of capturing mercury on a sorbent vary from amalgamation, chemical adsorption to simple physical adsorption. ... Untreated carbon-based sorbents and mineral-based sorbents capture mercury mainly via physical adsorption that allows release of captured mercury at slightly higher temperatures. ... This paper outlines the results of a systematic study on the capture of trace mercury vapor from simulated flue gases, using activated carbons. ...

Guangqian Luo; Hong Yao; Minghou Xu; Xinwei Cui; Weixing Chen; Rajender Gupta; Zhenghe Xu

2009-12-17T23:59:59.000Z

250

Impact of Closing Canadas Largest Point-Source of Mercury Emissions on Local Atmospheric Mercury Concentrations  

Science Journals Connector (OSTI)

(29) Solar radiation measurements at the airport were initiated in August 2010. ... Steffen, A.; Schroeder, W. Standard Operating Procedures for Total Gaseous Mercury MeasurementsCanadian Atmospheric Mercury Measurement Network (CAMNet); Environment Canada: Toronto, Canada, 1999. ...

Chris S. Eckley; Matthew T. Parsons; Rachel Mintz; Monique Lapalme; Maxwell Mazur; Robert Tordon; Robert Elleman; Jennifer A. Graydon; Pierrette Blanchard; Vincent St Louis

2013-08-26T23:59:59.000Z

251

Method development for the simultaneous determination of methylmercury and inorganic mercury in seafood  

Science Journals Connector (OSTI)

Abstract This paper reports the method development for the simultaneous determination of methylmercury (MeHg+) and inorganic mercury (iHg) species in seafood samples. The study focused on the extraction and quantification of MeHg+ (the most toxic species) by liquid chromatography coupled to on-line UV irradiation and cold vapour atomic fluorescence spectroscopy (LC-UV-CV-AFS), using \\{HCl\\} 4molL?1 as the extractant agent. Accuracy of the method has been verified by analysing three certified reference materials and different spiked samples. The values found for total Hg and MeHg+ for the \\{CRMs\\} did not differ significantly from certified values at a 95% confidence level, and recoveries between 85% and 97% for MeHg+, based on spikes, were achieved. The detection limits (LODs) obtained were 0.001mgHgkg?1 for total mercury, 0.0003mgHgkg?1 for MeHg+ and 0.0004mgHgkg?1 for iHg. The quantification limits (LOQs) established were 0.003mgHgkg?1 for total mercury, 0.0010mgHgkg?1 for MeHg+ and 0.0012mgHgkg?1 for iHg. Precision for each mercury species was established, being?12% in terms of RSD in all cases. Finally, the developed method was applied to 24 seafood samples from different origins and total mercury contents. The concentrations for Total Hg, MeHg+ and iHg ranged from 0.07 to 2.33, 0.0032.23 and 0.0060.085mgHgkg?1, respectively. The established analytical method allows to obtain results for mercury speciation in less than 1 one hour including both, sample pretreatment and measuring step.

Ariane V. Zmozinski; Sergio Carneado; Carmen Ibez-Palomino; ngels Sahuquillo; Jos Fermn Lpez-Snchez; Mrcia M. da Silva

2014-01-01T23:59:59.000Z

252

Mercury: Supporting Scalable Multi-Attribute Range Queries  

E-Print Network (OSTI)

Mercury: Supporting Scalable Multi-Attribute Range Queries Ashwin R. Bharambe Mukesh Agrawal 15213 Abstract This paper presents the design of Mercury, a scalable protocol for supporting multi-attribute range- based searches. Mercury differs from previous range-based query systems in that it supports mul

Keinan, Alon

253

Mercury/Waterfilling for Fixed Wireless OFDM Angel Lozano  

E-Print Network (OSTI)

Mercury/Waterfilling for Fixed Wireless OFDM Systems Angel Lozano Bell Labs (Lucent Technologies- mation is then given by the more general mercury/waterfilling policy. This paper illustrates the usance of mercury/waterfilling on frequency-selective OFDM channels with QAM constellations and it quantifies

Verdú, Sergio

254

MERCURY HANDLING FOR THE TARGET SYSTEM FOR A MUON COLLIDER  

E-Print Network (OSTI)

MERCURY HANDLING FOR THE TARGET SYSTEM FOR A MUON COLLIDER (IPAC12, WEPPD038) The target station a 15-20 T superconducting magnet. The target itself is a free mercury jet, moving at 20 m/s at an small angle to the magnetic axis, so as later to be collected in a mercury pool/beam dump. The replaceable

McDonald, Kirk

255

Powering Mercury's dynamo J.-P. Williams,1  

E-Print Network (OSTI)

Powering Mercury's dynamo J.-P. Williams,1 O. Aharonson,1 and F. Nimmo2 Received 6 July 2007 magnetic field of Mercury has implications for the interior structure of the planet and its thermal (2007), Powering Mercury's dynamo, Geophys. Res. Lett., 34, L21201, doi:10.1029/ 2007GL031164. 1

Nimmo, Francis

256

2003 Mercury Computer Systems, Inc. Session 5: Current &  

E-Print Network (OSTI)

© 2003 Mercury Computer Systems, Inc. Session 5: Current & Emerging Standards Session 5: Current & Emerging Standards Craig Lund, Chief Technology Officer Mercury Computer Systems, Inc. High Performance Embedded Computing (HPEC) Conference September 2003 #12;© 2003 Mercury Computer Systems, Inc. Agenda

Kepner, Jeremy

257

Wednesday, March 25, 2009 SPECIAL SESSION: MESSENGER AT MERCURY  

E-Print Network (OSTI)

Wednesday, March 25, 2009 SPECIAL SESSION: MESSENGER AT MERCURY: A GLOBAL PERSPECTIVE. T. MESSENGER's Newly Global Perspective on Mercury: Some Implications for Interior Evolution [#1750] MESSENGER's first two flybys of Mercury have revealed a planet with a richer history of magmatism

Rathbun, Julie A.

258

Exploring Mercury: Scientific Results from the MESSENGER Mission  

E-Print Network (OSTI)

#12;Exploring Mercury: Scientific Results from the MESSENGER Mission Larry R. Nittler Carnegie-Cahill · MESSENGER Science Team, Engineers, Mission Operations (APL) #12;Mars Mercury · Naked-eye planet, but very difficult to observe due to proximity to Sun May 12, 2011, from NZ (M. White, Flickr) Mercury Venus Jupiter

Rhoads, James

259

2003 Mercury Computer Systems, Inc. Beamforming for Radar  

E-Print Network (OSTI)

© 2003 Mercury Computer Systems, Inc. Beamforming for Radar Systems on COTS Heterogeneous ComputingHeterogeneous Computing PlatformsPlatforms Jeffrey A. Rudin Mercury Computer Systems, Inc. High Performance Embedded Computing (HPEC) Conference September 23, 2003 #12;2© 2003 Mercury Computer Systems, Inc. Outline

Kepner, Jeremy

260

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE  

E-Print Network (OSTI)

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE: Insights from a global 3D land.S. National Science Foundation Atmospheric Chemistry Program #12;FROM ATMOSPHERE TO FISH: MERCURY RISING Ice core from Wyoming [Schuster et al., ES&T 2002] Mercury deposition has increased by 300% since

Selin, Noelle Eckley

Note: This page contains sample records for the topic "mercury levels cxs" 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

Mercury Beam Dump Simulations Tristan Davenne Ottone Caretta  

E-Print Network (OSTI)

Mercury Beam Dump Simulations Tristan Davenne Ottone Caretta STFC Rutherford Appleton Laboratory, UK 2nd Princeton-Oxford High Power Target Meeting 6-7 November-2008 #12;Mercury beam dump design from NUFACT Feasibility Study #12;Peter Loveridge, November-2008 Mercury beam dump design from NUFACT

McDonald, Kirk

262

Mercury Concentrations in Fish from the San Francisco Bay Area  

E-Print Network (OSTI)

Mercury Concentrations in Fish from the San Francisco Bay Area San Francisco Bay Regional Water on composite samples · Some mercury analysis on individual largemouth bass · Size targets #12;Tomales Bay Study chemical analyses (Hg and organics) conducted on composite samples · Some mercury analysis on individual

263

Mercury's thermo-chemical evolution from numerical models constrained  

E-Print Network (OSTI)

Mercury's thermo-chemical evolution from numerical models constrained by MESSENGER observations Globe de Paris, France #12;Basics facts about Mercury · Semi-major axis: 0.39 AU · 3:2 spin Earth!) · Black body temperature: 440 K #12;Exploration of Mercury Mariner10 ·First spacecraft to use

Cerveny, Vlastislav

264

Mercury exosphere I. Global circulation model of its sodium component  

E-Print Network (OSTI)

Mercury exosphere I. Global circulation model of its sodium component Francois Leblanc a,*, R 2010 Accepted 27 April 2010 Available online 5 May 2010 Keywords: Mercury, Atmosphere Aeronomy a b s t r a c t Our understanding of Mercury's sodium exosphere has improved considerably in the last 5

Johnson, Robert E.

265

Mercury reuses several external software tools developed by ORNL  

E-Print Network (OSTI)

Mercury reuses several external software tools developed by ORNL DAAC and other organizations-on,canopychemistryaccpclimatecollectionseoslandvalidationFIFEFIFEfollow-on fluxnethydroclimatologycollectionsmodelarchivenetprimaryproductivityNPPNBIIMAST- DCUSANPNIABINDataONEWENDI Mercury's architecture includes 1) a harvesting engine was packaged in such a way that all the Mercury projects will use the same harvester scripts, but each project

266

Mercury and Freon: Temperature Emulation and Management for Server Systems  

E-Print Network (OSTI)

Mercury and Freon: Temperature Emulation and Management for Server Systems Taliver Heath Dept by simulators and real measurements. In this paper, we introduce Mercury, a soft- ware suite that avoids data. Most importantly, Mercury runs the entire software stack natively, enables repeatable experiments

Bianchini, Ricardo

267

Thursday, March 26, 2009 POSTER SESSION II: MERCURY  

E-Print Network (OSTI)

Thursday, March 26, 2009 POSTER SESSION II: MERCURY 6:30 p.m. Town Center Exhibit Area Gómez-Perez N. Wicht J. Magnetic Field at Mercury: Effects of External Sources on Planetary Dynamos [#1634] In Mercury, magnetospheric currents induce a magnetic field at the top of the core. We study dynamo

Rathbun, Julie A.

268

Mercury: Supporting Scalable Multi-Attribute Range Ashwin R. Bharambe  

E-Print Network (OSTI)

Mercury: Supporting Scalable Multi-Attribute Range Queries Ashwin R. Bharambe ashu Carnegie Mellon University Pittsburgh, PA 15213 ABSTRACT This paper presents the design of Mercury, a scalable pro- tocol for supporting multi-attribute range-based searches. Mercury differs from previous

Krishnamurthy, Arvind

269

Mercury Beam Dump Simulations Tristan Davenne Ottone Caretta Chris Densham  

E-Print Network (OSTI)

Mercury Beam Dump Simulations Tristan Davenne Ottone Caretta Chris Densham STFC Rutherford Appleton Laboratory, UK 1st joint meeting of EUROnu WP2 (Superbeam) and NF-IDS target 15-17 December-2008 #12;Mercury beam dump design from NUFACT Feasibility Study #12;Peter Loveridge, November-2008 Mercury beam dump

McDonald, Kirk

270

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE  

E-Print Network (OSTI)

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE: Insights from global modeling Noelle Atmospheric Chemistry Program #12;FROM ATMOSPHERE TO FISH: MERCURY RISING Ice core from Wyoming [Schuster et al., ES&T 2002] Mercury deposition has increased by 300% since industrialization Major anthropogenic

Selin, Noelle Eckley

271

Tuesday, March 14, 2006 POSTER SESSION I: MERCURY  

E-Print Network (OSTI)

Tuesday, March 14, 2006 POSTER SESSION I: MERCURY 7:00 p.m. Fitness Center Helbert J. Moroz L. V for the MERTIS Instrument on the ESA BepiColombo Mission to Mercury [#1662] The MERTIS instrument on BepiColombo will study the surface of Mercury in the TIR. We will present a list of analog material compiled to support

Rathbun, Julie A.

272

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE  

E-Print Network (OSTI)

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE: Insights from Global Modeling Noelle #12;MERCURY IN THE ENVIRONMENT: OUTLINE 1. Deposition to the United States results from a mix of local and global sources, depending on the location 2. Historical and present releases of mercury will continue

Selin, Noelle Eckley

273

MESSENGER observations of magnetopause structure and dynamics at Mercury  

E-Print Network (OSTI)

MESSENGER observations of magnetopause structure and dynamics at Mercury Gina A. DiBraccio,1 James December 2012; accepted 10 January 2013; published 1 March 2013. [1] On 18 March 2011, MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) became the first spacecraft to orbit Mercury

Salzman, Daniel

274

Long-Term Management and Storage of Elemental Mercury  

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

In addition to banning the export of elemental mercury from the United States as of January 1, 2013, the Mercury Export Ban Act of 2008 (MEBA) required DOE to establish a facility for the long-term management and storage of elemental mercury.

275

Optical frequency standards based on mercury and aluminum ions  

E-Print Network (OSTI)

Optical frequency standards based on mercury and aluminum ions W. M. Itano, J. C. Bergquist, A-16 . Keywords: aluminum, atomic clocks, frequency standards, ion traps, mercury 1. INTRODUCTION Optical frequency standards based on the mercury ion and, more recently, the aluminum ion are under devel- opment

276

Mercury Absorption in Aqueous Oxidants Catalyzed by Mercury(II) Lynn L. Zhao and Gary T. Rochelle*  

E-Print Network (OSTI)

Mercury Absorption in Aqueous Oxidants Catalyzed by Mercury(II) Lynn L. Zhao and Gary T. Rochelle no immediate effect on mercury removal. In 0.8 M HNO3 with the addition of K2Cr2O7, the reaction is first at 25 °C. For mercury absorption in Hg(II) obtained by HgCl2 injection, the presence of HNO3 greatly

Rochelle, Gary T.

277

NETL: Mercury Emissions Control Technologies - Advanced Utility  

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

Advanced Utility Mercury-Sorbent Field Testing Program Advanced Utility Mercury-Sorbent Field Testing Program Sorbent Technologies Corporation, will test an advanced halgenated activated carbon to determine the mercury removal performance and relative costs of sorbent injection for advanced sorbent materials in large-scale field trials of a variety of combinations of coal-type and utility plant-configuration. These include one site (Detroit Edison's St. Clair Station) with a cold-side ESP using subbituminous coal, or blend of subbituminous and bituminous coal, and one site (Duke Energy's Buck Plant) with a hot-side ESP which burns a bituminous coal. Related Papers and Publications: Semi-Annual Technical Progress Report for the period April 1 - October 31, 2004 [PDF-2275KB] Semi-Annual Technical Progress Report for the period of October 2003 - March 2004 [PDF-1108KB]

278

Geochemical, Genetic, and Community Controls on Mercury  

SciTech Connect

The sulfate-reducing bacteria (SRB) are soil bacteria that share two common characteristics, strict anaerobiosis and the ability to respire sulfate. The metabolic activities of these bacteria play significant roles in the global sulfur cycle, anaerobic degradation of biomass, biological metal corrosion in the environment and, recently, degradation of toxic compounds. The accumulation of evidence suggests these bacteria are also key to the production of the neurotoxin methylmercury in environmental settings. We propose to use our experience with the development of genetics in sulfate-reducing bacteria of the genus Desulfovibrio to create mutations that will eliminate the methylation of mercury, thereby identifying the genes essential for this process. This information may allow the environmental monitoring of the mercury methylation potential to learn the location and quantity of the production this toxin. From these data, more accurate predictive models of mercury cycling can be generated.

Wall, Judy D.

2014-11-10T23:59:59.000Z

279

THEORY OF SECULAR CHAOS AND MERCURY'S ORBIT  

SciTech Connect

We study the chaotic orbital evolution of planetary systems, focusing on secular (i.e., orbit-averaged) interactions, which dominate on long timescales. We first focus on the evolution of a test particle that is forced by multiple planets. To linear order in eccentricity and inclination, its orbit precesses with constant frequencies. But nonlinearities modify the frequencies, and can shift them into and out of resonance with either the planets' eigenfrequencies (forming eccentricity or inclination secular resonances), or with linear combinations of those frequencies (forming mixed high-order secular resonances). The overlap of these nonlinear secular resonances drives secular chaos. We calculate the locations and widths of nonlinear secular resonances, display them together on a newly developed map (the 'map of the mean momenta'), and find good agreement between analytical and numerical results. This map also graphically demonstrates how chaos emerges from overlapping secular resonances. We then apply this newfound understanding to Mercury to elucidate the origin of its orbital chaos. We find that since Mercury's two free precession frequencies (in eccentricity and inclination) lie within {approx}25% of two other eigenfrequencies in the solar system (those of the Jupiter-dominated eccentricity mode and the Venus-dominated inclination mode), secular resonances involving these four modes overlap and cause Mercury's chaos. We confirm this with N-body integrations by showing that a slew of these resonant angles alternately librate and circulate. Our new analytical understanding allows us to calculate the criterion for Mercury to become chaotic: Jupiter and Venus must have eccentricity and inclination of a few percent. The timescale for Mercury's chaotic diffusion depends sensitively on the forcing. As it is, Mercury appears to be perched on the threshold for chaos, with an instability timescale comparable to the lifetime of the solar system.

Lithwick, Yoram [Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States); Wu Yanqin [Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4 (Canada)

2011-09-20T23:59:59.000Z

280

Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Mercury Vapor Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

Note: This page contains sample records for the topic "mercury levels cxs" 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

Sorbents for the oxidation and removal of mercury  

DOE Patents (OSTI)

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

Olson, Edwin S. (Grand Forks, ND); Holmes, Michael J. (Thompson, ND); Pavlish, John H. (East Grand Forks, MN)

2008-10-14T23:59:59.000Z

282

Sorbents for the oxidation and removal of mercury  

DOE Patents (OSTI)

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

Olson, Edwin S.; Holmes, Michael J.; Pavlish, John Henry

2014-09-02T23:59:59.000Z

283

Method for high temperature mercury capture from gas streams  

DOE Patents (OSTI)

A process to facilitate mercury extraction from high temperature flue/fuel gas via the use of metal sorbents which capture mercury at ambient and high temperatures. The spent sorbents can be regenerated after exposure to mercury. The metal sorbents can be used as pure metals (or combinations of metals) or dispersed on an inert support to increase surface area per gram of metal sorbent. Iridium and ruthenium are effective for mercury removal from flue and smelter gases. Palladium and platinum are effective for mercury removal from fuel gas (syngas). An iridium-platinum alloy is suitable for metal capture in many industrial effluent gas streams including highly corrosive gas streams.

Granite, E.J.; Pennline, H.W.

2006-04-25T23:59:59.000Z

284

A CAVITY RING-DOWN SPECTROSCOPY MERCURY CONTINUOUS EMISSION MONITOR  

SciTech Connect

The construction of the sampling system was completed during the past quarter. The sampling system has been built on a 3 feet x 4 feet x 2 inch breadboard table. The laser system, all the associated optics, and the mounts and hardware needed to couple the UV light into the fiber optic have also been condensed and placed on an identical 3 feet x 4 feet x 2 inch breadboard table. This reduces the footprint of each system for ease of operation at a field test facility. The two systems are only connected with a fiber optic, to bring the UV light to the CRD cavity, and a single coaxial cable used to apply a voltage to the diode seed laser to scan the frequency over the desired mercury transition. SRD software engineers applied a couple of software fixes to correct the problems of the diode seed laser drifting or mode hopping. Upon successful completion of the software fixes another long-term test was conducted. A nearly 3 day long, 24 hours/day, test was run to test out the new subroutines. Everything appeared to work as it should and the mercury concentrations were accurately reported for the entire test, with the exception of a small interval of time when the intensity of the UV light dropped low enough that the program was no longer triggering properly. After adjusting the power of the laser the program returned to proper operation. With the successful completion of a relatively long test SRD software engineer incorporated the new subroutine into an entirely new program. This program operates the CRD instrument automatically as a continuous emissions monitor for mercury. In addition the program also reports the concentration of SO{sub 2} determined in the sample flue gas stream. Various functions, operation of, and a description of the new program have been included with this report. This report concludes the technical work associated with Phase II of the Cavity Ring-Down project for the continuous detection of trace levels of mercury. The project is presently gearing up for additional testing in preparation for a field test to be conducted at the DOE/NETL pilot plant facility in Pittsburgh, Pennsylvania.

Christopher C. Carter

2004-03-31T23:59:59.000Z

285

NETL: IEP - Mercury Emissions Control: Emissions Characterization  

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

Control Control Emissions Characterization In anticipation of the 1990 CAAAs, specifically the draft Title III regarding the characterization of potential HAPs from electric steam generating units, DOE initiated a new Air Toxics Program in 1989. The DOE Mercury Measurement and Control Program evolved as a result of the findings from the comprehensive assessment of hazardous air pollutants studies conducted by DOE from 1990 through 1997. DOE, in collaboration with EPRI, performed stack tests at a number of coal-fired power plants (identified on map below) to accurately determine the emission rates of a series of potentially toxic chemicals. These tests had not been conducted previously because of their cost, about $1 million per test, so conventional wisdom on emissions was based on emission factors derived from analyses of coal. In general, actual emissions were found to be about one-tenth previous estimates, due to a high fraction of the pollutants being captured by existing particulate control systems. These data resulted in a decision by EPA that most of these pollutants were not a threat to the environment, and needed no further regulation at power plants. This shielded the coal-fired power industry from major (tens of millions) costs that would have resulted from further controlling these emissions. However, another finding of these studies was that mercury was not effectively controlled in coal-fired utility boiler systems. Moreover, EPA concluded that a plausible link exists between these emissions and adverse health effects. Ineffective control of mercury by existing control technologies resulted from a number of factors, including variation in coal composition and variability in the form of the mercury in flue gases. The volatility of mercury was the main contributor for less removal, as compared to the less volatile trace elements/metals which were being removed at efficiencies over 99% with the fly ash. In addition, it was determined that there was no reliable mercury speciation method to accurately distinguish between the elemental and oxidized forms of mercury in the flue gas. These two forms of mercury respond differently to removal techniques in existing air pollution control devices utilized by the coal-fired utility industry.

286

NETL: Mercury Emissions Control Technologies - Full- Scale Testing of  

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

Full-Scale Testing of Enhanced Mercury Control in Wet FGD Full-Scale Testing of Enhanced Mercury Control in Wet FGD The goal of this project is to commercialize methods for the control of mercury in coal-fired electric utility systems equipped with wet flue gas desulfurization (wet FGD). The two specific objectives of this project are 1) ninety percent (90%) total mercury removal and 2) costs below 1/4 to 1/2 of today's commercially available activated carbon mercury removal technologies. Babcock and Wilcox and McDermott Technology, Inc's (B&W/MTI's) will demonstrate their wet scrubbing mercury removal technology (which uses very small amounts of a liquid reagent to achieve increased mercury removal) at two locations burning high-sulfur Ohio bituminous coal: 1) Michigan South Central Power Agency's (MSCPA) 55 MWe Endicott Station located in Litchfield, Michigan and 2) Cinergy's 1300 MWe Zimmer Station located near Cincinnati, Ohio.

287

NETL: News Release - Innovative Mercury Removal Technique Shows Early  

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

August 5, 2003 August 5, 2003 Innovative Mercury Removal Technique Shows Early Promise Photochemical Process Developed in Federal Lab Removes Mercury from Flue Gas - NETL scientist Evan Granite prepares a lab test of the UV mercury removal process. - NETL scientist Evan Granite prepares for a lab test of the UV mercury removal process. MORGANTOWN, WV - A promising technology to remove mercury from coal-fired power plants -- dubbed the "GP-254 Process" -- has been developed and is currently being tested at the Department of Energy's National Energy Technology Laboratory (NETL). Newly patented, the GP-254 Process enhances mercury removal using ultraviolet light to induce various components of power plant stack gas to react with the mercury, and changes the

288

NETL: Mercury Emissions Control Technologies - Bench Scale Kinetics of  

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

Bench Scale Kinetics of Mercury Reactions in FGD Liquors Bench Scale Kinetics of Mercury Reactions in FGD Liquors When research into the measurement and control of Hg emissions from coal-fired power plants began in earnest in the early 1990s, it was observed that oxidized mercury can be scrubbed at high efficiency in wet FGD systems, while elemental mercury can not. In many cases, elemental mercury concentrations were observed to increase slightly across wet FGD systems, but this was typically regarded as within the variability of the measurement methods. However, later measurements have shown substantial re-emissions from some FGD systems. The goal of this project is to develop a fundamental understanding of the aqueous chemistry of mercury (Hg) absorbed by wet flue gas desulfurization (FGD) scrubbing liquors. Specifically, the project will determine the chemical reactions that oxidized mercury undergoes once absorbed, the byproducts of those reactions, and reaction kinetics.

289

NETL: Mercury Emissions Control Technologies - Development of Comprehensive  

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

Full-Scale Testing of Mercury Control Via Sorbent Injection Full-Scale Testing of Mercury Control Via Sorbent Injection DOE has identified technologies (based on past DOE and other R&D organizations' mercury measurement and control achievements) that are expected to be important in developing possible strategies on mercury control for the coal-fired electric utility industry. To address critical questions related to cost and efficiency of these mercury control technologies, DOE has funded the first of a kind large-scale initiative aimed at testing and evaluating large-scale mercury control technologies for coal-based power systems. These tests will collect cost and performance data with parametric and long term field experiments at power plants with existing air pollution control devices (APCDs) utilized to control other pollutants as well as mercury in hopes of providing the cheapest control options for the utility industry in mid-term application (5 to 10 years).

290

Global change and mercury cycling: Challenges for implementing a global mercury treaty  

E-Print Network (OSTI)

The Minamata Convention aims to protect human health and the environment from anthropogenic emissions and releases of mercury. In the present study, the provisions of the Minamata Convention are examined to assess their ...

Selin, Noelle Eckley

291

MERCURY IN TUNAS: A REVIEW C. L. PETERSON, W. L. KLAWE, AND G. D. SHARp!  

E-Print Network (OSTI)

MERCURY IN TUNAS: A REVIEW C. L. PETERSON, W. L. KLAWE, AND G. D. SHARp! ABSTRACT Mercury not significantly altered the mercury content of the high seas where most tunas are captured. Mercury compounds importance of these pathways in tunas is unknown. Mercury occurs in tuna principally in the form

292

Mercury Exchange Program Summary: The Office of Research Safety (ORS) proudly presents  

E-Print Network (OSTI)

Mercury Exchange Program Summary: The Office of Research Safety (ORS) proudly presents the Mercury Exchange Program. This is a great program that enables laboratories to exchange their intact mercury thermometers, manometers, and other mercury-containing devices for non-mercury devices at no cost. The key

Duchowski, Andrew T.

293

Mercury Monitoring in California Sport Fish: A Historical Review and Recommendations for the Future  

E-Print Network (OSTI)

Mercury Monitoring in California Sport Fish: A Historical Review and Recommendations for the Future with unusually severe and widespread mercury contamination due to extensive mercury and gold mining in the 1800s. Mercury monitoring in California sport sh began in 1969. Since that time, a substantial amount of mercury

294

DOI: 10.1002/chem.200701895 A Highly Selective Colorimetric Aqueous Sensor for Mercury  

E-Print Network (OSTI)

to methyl mercury, adding this potent neuro- toxin to the food chain.[4­6] Mercury poisoning causes serious Mercury poisoning remains a significant threat to human health, yet global mercury emissions continue of mercury poisoning requires new methods of detection that are sen- sitive and selective. Here we report

Tew, Gregory N.

295

NETL: IEP - Mercury Emissions Control: Regulatory Drivers  

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

Regulatory Drivers Regulatory Drivers The Clean Air Act Amendments of 1990 (CAAA) brought about new awareness regarding the overall health-effects of stationary source fossil combustion emissions. Title III of the CAAA identified 189 pollutants, including mercury, as hazardous or toxic and required the Environmental Protection Agency (EPA) to evaluate their emissions by source, health effects and environmental implications, including the need to control these emissions. These pollutants are collectively referred to as air toxics or hazardous air pollutants (HAPs). The provisions in Title III specific to electric generating units (EGU) were comprehensively addressed by DOE's National Energy Technology Laboratory (NETL) and the Electric Power Research Institute (EPRI) in collaborative air toxic characterization programs conducted between 1990 and 1997. This work provided most of the data supporting the conclusions found in EPA's congressionally mandated reports regarding air toxic emissions from coal-fired utility boilers; the Mercury Study Report to Congress (1997)1 and the "Study of Hazardous Air Pollutant Emissions from Electric Utility Steam Generating Units -- Final Report to Congress" (1998).2 The first report identified coal-fired power plants as the largest source of human-generated mercury emissions in the U.S. and the second concluded that mercury from coal-fired utilities was the HAP of "greatest potential concern" to the environment and human health that merited additional research and monitoring.

296

Catalytic Reactor For Oxidizing Mercury Vapor  

DOE Patents (OSTI)

A catalytic reactor (10) for oxidizing elemental mercury contained in flue gas is provided. The catalyst reactor (10) comprises within a flue gas conduit a perforated corona discharge plate (30a, b) having a plurality of through openings (33) and a plurality of projecting corona discharge electrodes (31); a perforated electrode plate (40a, b, c) having a plurality of through openings (43) axially aligned with the through openings (33) of the perforated corona discharge plate (30a, b) displaced from and opposing the tips of the corona discharge electrodes (31); and a catalyst member (60a, b, c, d) overlaying that face of the perforated electrode plate (40a, b, c) opposing the tips of the corona discharge electrodes (31). A uniformly distributed corona discharge plasma (1000) is intermittently generated between the plurality of corona discharge electrode tips (31) and the catalyst member (60a, b, c, d) when a stream of flue gas is passed through the conduit. During those periods when corona discharge (1000) is not being generated, the catalyst molecules of the catalyst member (60a, b, c, d) adsorb mercury vapor contained in the passing flue gas. During those periods when corona discharge (1000) is being generated, ions and active radicals contained in the generated corona discharge plasma (1000) desorb the mercury from the catalyst molecules of the catalyst member (60a, b, c, d), oxidizing the mercury in virtually simultaneous manner. The desorption process regenerates and activates the catalyst member molecules.

Helfritch, Dennis J. (Baltimore, MD)

1998-07-28T23:59:59.000Z

297

Global Biogeochemical Cycling of Mercury: A Review  

E-Print Network (OSTI)

's biogeo- chemical system, but centuries of human activi- ties, such as mining and fossil fuel burning by Annual Reviews. All rights reserved 1543-5938/09/1121-0043$20.00 Key Words ecosystem dynamics, health, land-atmosphere interactions, pollution Abstract Mercury pollution poses global human health

298

Evaluation of Sorbent Injection for Mercury Control  

SciTech Connect

ADA-ES, Inc., with support from DOE/NETL, EPRI, and industry partners, studied mercury control options at six coal-fired power plants. The overall objective of the this test program was to evaluate the capabilities of activated carbon injection at six plants: Sunflower Electric's Holcomb Station Unit 1, AmerenUE's Meramec Station Unit 2, Missouri Basin Power Project's Laramie River Station Unit 3, Detroit Edison's Monroe Power Plant Unit 4, American Electric Power's Conesville Station Unit 6, and Labadie Power Plant Unit 2. These plants have configurations that together represent 78% of the existing coal-fired generation plants. The financial goals for the program established by DOE/NETL were to reduce the uncontrolled mercury emissions by 50 to 70% at a cost 25 to 50% lower than the target established by DOE of $60,000 per pound of mercury removed. Results from testing at Holcomb, Laramie, Meramec, Labadie, and Monroe indicate the DOE goal was successfully achieved. However, further improvements for plants with conditions similar to Conesville are recommended that would improve both mercury removal performance and economics.

Sharon Sjostrom

2008-06-30T23:59:59.000Z

299

Mariner 10 mission to Venus and Mercury  

Science Journals Connector (OSTI)

Mariner 10, the first dual-planet, gravity-assist mission, was launched by an Atlas/Centaur Mariner launch vehicle from the National Aeronautics and Space AdministrationKennedy Space Center in Cape Canaveral, Florida on 3 November 1973. Shortly after liftoff, a series of earth and Moon observations were made. These were followed by the initial trajectory correction maneuver and a period of interplanetary cruise operations. An additional trajectory correction maneuver was made several weeks prior to the encounter with Venus to refine the flyby on 5 February 1974 to 5000 km (3000 miles) above the surface of the planet. Extensive scientific observations of Venus took place over a period of about one week. Several thousand TV images were transmitted to Earth, many of which showed spectacular ultraviolet cloud formations and motions. The post-Venus trajectory required only a modest correction to place the spacecraft on a flight path that passed within the planned 1000 km (620 miles) of the surface of Mercury on 19 March 1974. Extensive TV imaging, together with other scientific observations, provided the first in-depth information concerning Mercury. The Mariner 10 mission is described, including engineering highlights of the flight and the key scientific results. The post-Mercury operation plan is discussed, the initial results of the second encounter with Mercury are given, and the possibilities of a third encounter are presented.

W.Eugene Giberson; N.William Cunningham

1975-01-01T23:59:59.000Z

300

In Situ Mercury Stabilization (ISMS) Treatment: Technology Maturation Project Phase I Status Report  

SciTech Connect

Mercury (Hg) was used to separate lithium-6 isotope for weapons production at the Y-12 Plant in Oak Ridge in the 1950s and 1960s. As much as two million pounds of elemental mercury was 'lost' or unaccounted for and a large portion of that material is believed to have entered the environment. The DOE site office in Oak Ridge has identified Hg pollution in soils, sediments, and streams as the most significant environmental challenge currently faced. In industry, large amounts of mercury have been used to manufacture products (e.g., fluorescent light bulbs, thermometers) and for chemical processing (e.g., production of chlorine and alkali via mercury electrochemical cells) and many of these industrial sites are now polluted with mercury contaminated soil as a result of previous releases and/or inadvertent leaks. Remediation techniques for Hg contaminated soils are either based on thermal desorption and recovery of the mercury or excavation and shipping of large volumes of material to remote facilities for treatment and disposal. Both of these alternatives are extremely costly. The Brookhaven National Laboratory (BNL) Environmental Research & Technology Division (ERTD) has demonstrated, in laboratory-scale experiments, the viability of treating mercury contaminated soils by means of sulfide treatment rods inserted into the soil through a process known as In Situ Mercury Stabilization (ISMS). This approach is partly based on BNL's patented and successfully licensed ex situ process for Hg treatment, Sulfur Polymer Stabilization/Solidification (SPSS) which converts Hg to the more stable sulfide form. The original experiments showed that Hg homogeneously distributed in soil rapidly migrates to form a high concentration zone of chemically stable mercuric sulfide near the treatment rods while concentrations of Hg in surrounding areas away from the treatment rods are depleted to acceptable levels. BSA has subsequently filed for patent protection on the ISMS technology. If further developed it has the potential for large-scale in-situ treatment of contaminated soils that could substantially reduce the prohibitive cost of thermal desorption and/or excavation and disposal. Licensing and spin-off technology development opportunities would then be viable. Depending on performance and regulatory acceptance, the treated mercury could either be excavated for disposal elsewhere or left in place as a stable alternative. Excavated spent treatment rods could be processed by the SPSS process to reduce the potential for dispersion and lower leachability even further. The Phase I objectives of the In Situ Mercury Stabilization Treatment Process Technology Maturation Project were to: (1) replicate the original bench-scale results that formed the basis for BNL's patent application, i.e., mercury contamination in soil will migrate to and react with 'rods' containing sulfur and/or sulfur compounds, (2) provide enough information to evaluate a decision to conduct further development, and (3) establish some of the critical parameters that require further technology maturation during Phase II. The information contained in this report summarizes the work conducted in Phase I to meet these objectives.

Kalb,P.D.; Milian, L.

2008-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Evaluation of Sorbent Injection for Mercury Control  

SciTech Connect

The power industry in the U.S. is faced with meeting new regulations to reduce the emissions of mercury compounds from coal-fired plants. These regulations are directed at the existing fleet of nearly 1,100 boilers. These plants are relatively old with an average age of over 40 years. Although most of these units are capable of operating for many additional years, there is a desire to minimize large capital expenditures because of the reduced (and unknown) remaining life of the plant to amortize the project. Injecting a sorbent such as powdered activated carbon into the flue gas represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. This is the final site report for tests conducted at DTE Energy's Monroe Power Plant, one of five sites evaluated in this DOE/NETL program. The overall objective of the test program was to evaluate the capabilities of activated carbon injection at five plants: Sunflower Electric's Holcomb Station Unit 1, AmerenUE's Meramec Station Unit 2, Missouri Basin Power Project's Laramie River Station Unit 3, Detroit Edison's Monroe Power Plant Unit 4, and AEP's Conesville Station Unit 6. These plants have configurations that together represent 78% of the existing coal-fired generation plants. The goals for the program established by DOE/NETL were to reduce the uncontrolled mercury emissions by 50 to 70% at a cost 25 to 50% lower than the target established by DOE of $60,000/lb mercury removed. The results from Monroe indicate that using DARCO{reg_sign} Hg would result in higher mercury removal (80%) at a sorbent cost of $18,000/lb mercury, or 70% lower than the benchmark. These results demonstrate that the goals established by DOE/NETL were exceeded during this test program. The increase in mercury removal over baseline conditions is defined for this program as a comparison in the outlet emissions measured using the Ontario Hydro method during the baseline and long-term test periods. The change in outlet emissions from baseline to long-term testing was 81%.

Sharon Sjostrom

2006-04-30T23:59:59.000Z

302

MERCURY SPECIATION SAMPLING AT NEW CENTURY ENERGY'S VALMONT STATION  

SciTech Connect

The 1990 Clean Air Act Amendments required the U.S. Environmental Protection Agency (EPA) to determine whether the presence of mercury in the stack emissions from fossil fuel-fired electric utility power plants poses an unacceptable public health risk. EPA's conclusions and recommendations were presented in the ''Mercury Study Report to Congress'' and ''Study of Hazardous Air Pollutant Emissions from Electric Utility Steam Generating Units''. The first report addressed both the human health and environmental effects of anthropogenic mercury emissions, while the second addressed the risk to public health posed by the emission of mercury and other hazardous air pollutants from steam electric generating units. Although these reports did not state that mercury controls on coal-fired electric power stations would be required given the current state of the art, they did indicate that the EPA views mercury as a potential threat to human health. Therefore, it was concluded that mercury controls at some point may be necessary. EPA also indicated that additional research/information was necessary before any definitive statement could be made. In an effort to determine the amount and types of mercury being emitted into the atmosphere by coal-fired power plants, EPA in late 1998 issued an information collection request (ICR) that required all coal-fired power plants to analyze their coal and submit the results to EPA on a quarterly basis. In addition, about 85 power stations were required to measure the speciated mercury concentration in the flue gas. These plants were selected on the basis of plant configuration and coal type. The Valmont Station owned and operated by New Century Energy in Boulder, Colorado, was selected for detailed mercury speciation of the flue gas as part of the ICR process. New Century Energy, in a tailored collaboration with EPRI and the U.S. Department of Energy, contracted with the Energy & Environmental Research Center (EERC) to do a study evaluating the behavior of mercury at the Valmont Station. The activities conducted at the Valmont Station by the EERC not only included the sampling needed to meet the requirements of the ICR, but involved a much more extensive mercury research program. The following objectives for the sampling at New Century Energy's Valmont Station were accomplished: (1) Successfully complete all of the mercury sampling and reporting requirements of the ICR. (2) Determine the variability in mercury concentrations at the stack using mercury continuous emission monitors (CEMs). (3) Calculate mercury mass balances and emission rates. (4) Determine the mercury concentration in the fly ash as a function of particle size. (5) Determine the impact of a fabric filter on mercury emissions for a western bituminous coal.

Dennis L. Laudal

2000-04-01T23:59:59.000Z

303

Total Mercury, Methylmercury, Methylmercury Production Potential, and Ancillary Streambed-Sediment and Pore-  

E-Print Network (OSTI)

Total Mercury, Methylmercury, Methylmercury Production Potential, and Ancillary Streambed Oak Creek, Wisconsin (center). (All photographs by the authors.) #12;Total Mercury, Methylmercury.E., 2008, Total mercury, methylmercury, methylmercury production potential, and ancillary streambed

304

ROTATION OF MERCURY: THEORETICAL ANALYSIS OF THE DYNAMICS OF A RIGID ELLIPSOIDAL PLANET  

E-Print Network (OSTI)

Laboratory ROTATION OF MERCURY: THEDRETICAL ANALYSIS OF THEW -7405-eng-48 ROTATION OF MERCURY: THEORETICAL ANALYSIS OFfor the rotation of Mercury is sho'ln to imply locked-in

Laslett, L. Jackson

2008-01-01T23:59:59.000Z

305

Mercury and Methylmercury in the San Francisco Bay area: land-use impact and indicators  

E-Print Network (OSTI)

R.P. , and Flegal A. R. 2003, Mercury speciation in the SanAbdrashitova S. A. , 2001, Mercury in Aquatic Environment: A222 Hydrology for Planner Mercury and Methylmercury in the

Kim, Hyojin

2008-01-01T23:59:59.000Z

306

MERCURY EMISSIONS FROM A SIMULATED IN-SITU OIL SHALE RETORT  

E-Print Network (OSTI)

M. and Chang, B. , 1974; Mercury Monitor for Ambient Air,E. Poulson INTRODUCTION Mercury emissions from fossil-fuelHarley, R. A. , 1973; Mercury Balance on a Large Pulverized

Fox, J. P.

2012-01-01T23:59:59.000Z

307

Mercury Distribution in Contaminated Surface Sediments from Four Estuaries, Khuzestan Shore, North Part of Persian Gulf  

Science Journals Connector (OSTI)

...The distribution of mercury in surface sediment from four estuaries along the Khuzestan shore, north part of Persian Gulf, was measured. The concentration of mercury...p<0.05). The concentrations of mercury ...

Abdolah Raeisi Sarasiab; Mehdi Hosseini

2014-11-01T23:59:59.000Z

308

Mercury(II) Sorption to Two Florida Everglades Peats: Evidence for  

E-Print Network (OSTI)

Mercury(II) Sorption to Two Florida Everglades Peats: Evidence for Strong and Weak Binding of mercury methylation was measured at pH 6.0 and 0.01 M ionic strength. The mercury(II) sorption isotherms

Illinois at Chicago, University of

309

PILOT-SCALE EVALUATION OF THE IMPACT OF SELECTIVE CATALYTIC REDUCTION FOR NOx ON MERCURY SPECIATION  

SciTech Connect

Full-scale tests in Europe and bench-scale tests in the United States have indicated that the catalyst, normally vanadium/titanium metal oxide, used in the selective catalytic reduction (SCR) of NO{sub x}, may promote the formation of Hg{sup 2+} and/or particulate-bound mercury (Hg{sub p}). To investigate the impact of SCR on mercury speciation, pilot-scale screening tests were conducted at the Energy & Environmental Research Center. The primary research goal was to determine whether the catalyst or the injection of ammonia in a representative SCR system promotes the conversion of Hg{sup 0} to Hg{sup 2+} and/or Hg{sub p} and, if so, which coal types and parameters (e.g., rank and chemical composition) affect the degree of conversion. Four different coals, three eastern bituminous coals and a Powder River Basin (PRB) subbituminous coal, were tested. Three tests were conducted for each coal: (1) baseline, (2) NH{sub 3} injection, and (3) SCR of NO{sub x}. Speciated mercury, ammonia slip, SO{sub 3}, and chloride measurements were made to determine the effect the SCR reactor had on mercury speciation. It appears that the impact of SCR of NO{sub x} on mercury speciation is coal-dependent. Although there were several confounding factors such as temperature and ammonia concentrations in the flue gas, two of the eastern bituminous coals showed substantial increases in Hg{sub p} at the inlet to the ESP after passing through an SCR reactor. The PRB coal showed little if any change due to the presence of the SCR. Apparently, the effects of the SCR reactor are related to the chloride, sulfur and, possibly, the calcium content of the coal. It is clear that additional work needs to be done at the full-scale level.

Dennis L. Laudal; John H. Pavlish; Kevin C. Galbreath; Jeffrey S. Thompson; Gregory F. Weber; Everett Sondreal

2000-12-01T23:59:59.000Z

310

Feasibility of UV lasing without inversion in mercury vapor  

E-Print Network (OSTI)

We investigate the feasibility of UV lasing without inversion at a wavelength of $253.7$ nm utilizing interacting dark resonances in mercury vapor. Our theoretical analysis starts with radiation damped optical Bloch equations for all relevant 13 atomic levels. These master equations are generalized by considering technical phase noise of the driving lasers. From the Doppler broadened complex susceptibility we obtain the stationary output power from semiclassical laser theory. The finite overlap of the driving Gaussian laser beams defines an ellipsoidal inhomogeneous gain distribution. Therefore, we evaluate the intra-cavity field inside a ring laser self-consistently with Fourier optics. This analysis confirms the feasibility of UV lasing and reveals its dependence on experimental parameters.

Martin R. Sturm; Benjamin Rein; Thomas Walther; Reinhold Walser

2014-06-27T23:59:59.000Z

311

Mercury Control Technologies for Electric Utilities Burning Lignite Coal  

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

Mercury control technologies for Mercury control technologies for electric utilities Burning lignite coal Background In partnership with a number of key stakeholders, the U.S. Department of Energy's Office of Fossil Energy (DOE/FE), through its National Energy Technology Laboratory (NETL), has been carrying out a comprehensive research program since the mid-1990s focused on the development of advanced, cost-effective mercury (Hg) control technologies for coal-fired power plants. Mercury is a poisonous metal found in coal, which can be harmful and even toxic when absorbed from the environment and concentrated in animal tissues. Mercury is present as an unwanted by-product of combustion in power plant flue gases, and is found in varying percentages in three basic chemical forms(known as speciation): particulate-bound mercury, oxidized

312

Mercury Energy formerly Aquus Energy | Open Energy Information  

Open Energy Info (EERE)

Energy formerly Aquus Energy Energy formerly Aquus Energy Jump to: navigation, search Name Mercury Energy (formerly Aquus Energy) Place New Rochelle, New York Zip 10801 Sector Solar Product Integrator of solar energy systems for commercial and residential clients located in the mid-Atlantic and Northeast regions of the US through its wholly-owned subsidary Mercury Solar Energy. References Mercury Energy (formerly Aquus Energy)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Mercury Energy (formerly Aquus Energy) is a company located in New Rochelle, New York . References ↑ "Mercury Energy (formerly Aquus Energy)" Retrieved from "http://en.openei.org/w/index.php?title=Mercury_Energy_formerly_Aquus_Energy&oldid=348731

313

Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques |  

Open Energy Info (EERE)

Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques Abstract In order to evaluate the suitability of the soil mercury geochemical survey as a geothermal exploration technique, soil concentrates of mercy are compared to the distribution of measured geothermal gradients at Dixie Valley, Nevada; Roosevelt Hot Springs, Utah; and Nova, Japan. Zones containing high mercury values are found to closely correspond to high geothermal gradient zones in all three areas. Moreover, the highest mercury values within the anomalies are found near the wells with the highest geothermal gradient. Such close correspondence between soil concentrations

314

Geological and Anthropogenic Factors Influencing Mercury Speciation in Mine  

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

Geological and Anthropogenic Factors Influencing Mercury Speciation Geological and Anthropogenic Factors Influencing Mercury Speciation in Mine Wastes Christopher S. Kim,1 James J. Rytuba,2 Gordon E. Brown, Jr.3 1Department of Physical Sciences, Chapman University, Orange, CA 92866 2U.S. Geological Survey, Menlo Park, CA 94025 3Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305 Introduction Figure 1. Dr. Christopher Kim collects a mine waste sample from the Oat Hill mercury mine in Northern California. The majority of mercury mine wastes at these sites are present as loose, unconsolidated piles, facilitating the transport of mercury-bearing material downstream into local watersheds. Mercury (Hg) is a naturally occurring element that poses considerable health risks to humans, primarily through the consumption of fish which

315

Thief Process Removal of Mercury from Flue Gas  

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

Process for the Removal of Mercury from Flue Gas Process for the Removal of Mercury from Flue Gas Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing United States Patent Number 6,521,021 entitled "Thief Process for the Removal of Mercury from Flue Gas." Disclosed in this patent is a novel process in which partially combusted coal is removed from the combustion chamber of a power plant using a lance (called a "thief"). This partially combusted coal acts as a thermally activated adsorbent for mercury. When it is in- jected into the duct work of the power plant downstream from the exit port of the combustion chamber, mercury within the flue gas contacts and adsorbs onto the thermally activated sorbent. The sorbent-mercury

316

Mercury Emissions Control Technologies (released in AEO2006)  

Reports and Publications (EIA)

The Annual Energy Outlook 2006 reference case assumes that states will comply with the requirements of the Environmental Protection Agency's new Clean Air Mercury Rule (CAMR) regulation. CAMR is a two-phase program, with a Phase I cap of 38 tons of mercury emitted from all U.S. power plants in 2010 and a Phase II cap of 15 tons in 2018. Mercury emissions in the electricity generation sector in 2003 are estimated at around 50 tons. Generators have a variety of options to meet the mercury limits, such as: switching to coal with a lower mercury content, relying on flue gas desulfurization or selective catalytic reduction equipment to reduce mercury emissions, or installing conventional activated carbon injection (ACI) technology.

2006-01-01T23:59:59.000Z

317

Mercury Vapor At Lualualei Valley Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Mercury Vapor At Lualualei Valley Area (Thomas, 1986) Mercury Vapor At Lualualei Valley Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Lualualei Valley Area (Thomas, 1986) Exploration Activity Details Location Lualualei Valley Area Exploration Technique Mercury Vapor Activity Date Usefulness useful DOE-funding Unknown Notes Soil mercury and radon emanation surveys were performed over much of the accessible surface of Lualualei Valley (Cox and Thomas, 1979). The results of these surveys (Figs 7 and 8) delineated several areas in which soil mercury concentrations or radon emanation rates were substantially above normal background values. Some of these areas were apparently coincident with the mapped fracture systems associated with the caldera boundaries.

318

NETL: Emissions Characterization - Direct Measurement of Mercury Reactions  

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

Direct Measurement of Mercury Reactions in Coal Power Plant Plumes: Pleasant Prairie Plant Direct Measurement of Mercury Reactions in Coal Power Plant Plumes: Pleasant Prairie Plant Under DOE-NETL Cooperative Agreement DE-FC26-03NT41724, EPRI, in collaboration with Frontier Geosciences and the University of North Dakota Energy and Environmental Research Center (EERC), will perform precise in-stack and in-plume sampling of mercury emitted from the stack of WE Energies' Pleasant Prairie coal-fired power plant near Kenosha, Wisconsin. The overall objective of the project is to clarify the role, rates and end result of chemical transformations that may occur to mercury that has been emitted from elevated stacks of coal-fired electric power plants. This information is critical in determining the role of coal-fired plants in mercury deposition and in developing cost-effective, environmentally sound policies and strategies for reducing the adverse environmental effects of mercury.

319

Thief Carbon Catalyst for Oxidation of Mercury in Effluent Stream  

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

Carbon Catalyst for Oxidation of Mercury in Effluent Carbon Catalyst for Oxidation of Mercury in Effluent Stream Contact NETL Technology Transfer Group techtransfer@netl.doe.gov January 2012 Significance * Oxidizes heavy metal contaminants, especially mercury, in gas streams * Uses partially combusted coal ("Thief" carbon) * Yields an inexpensive catalyst * Cheap enough to be a disposable catalyst * Cuts long-term costs * Simultaneously addresses oxidation and adsorption issues Applications * Any process requiring removal of heavy

320

Water and Mercury Pipe Flow Simulation in FLUENTSimulation in FLUENT  

E-Print Network (OSTI)

Water and Mercury Pipe Flow Simulation in FLUENTSimulation in FLUENT Yan Zhan, Foluso Ladeinde;Straight Pipe flow Ph i l bl-- Physical problem Isothermal mercury/ water flow through a 60D straight pipe* Mercury 1500 41.844 m 4.04 m/s 18.5 bar 15.67 bar Water 1500 331.404 m 4.04 m/s 18.5 bar 18.291bar *uave

McDonald, Kirk

Note: This page contains sample records for the topic "mercury levels cxs" 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

Thief carbon catalyst for oxidation of mercury in effluent stream  

DOE Patents (OSTI)

A catalyst for the oxidation of heavy metal contaminants, especially mercury (Hg), in an effluent stream is presented. The catalyst facilitates removal of mercury through the oxidation of elemental Hg into mercury (II) moieties. The active component of the catalyst is partially combusted coal, or "Thief" carbon, which can be pre-treated with a halogen. An untreated Thief carbon catalyst can be self-promoting in the presence of an effluent gas streams entrained with a halogen.

Granite, Evan J. (Wexford, PA); Pennline, Henry W. (Bethel Park, PA)

2011-12-06T23:59:59.000Z

322

Argonne/EPA system captures mercury from air in gold shops |...  

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

Writing Internship Typical gold shop hood used to purify gold by superheating the goldmercury amalgam until the mercury vaporizes. The vaporized mercury is directed outside the...

323

E-Print Network 3.0 - aquatic mercury assessment Sample Search...  

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

Sea Grant Institute in consultation with the panel chairs. Summary: the assessment of fish-mercury responses to changes in mercury loadings. High net methylation rates in...

324

Enhanced Elemental Mercury Removal from Coal-fired Flue Gas by Sulfur-chlorine Compounds  

E-Print Network (OSTI)

III T; Murphy J T. DOE/NETLs Phase II Mercury ControlFired Power Plants, DOE/NETL Mercury R&D Program Review,

Miller, Nai-Qiang Yan-Zan Qu Yao Chi Shao-Hua Qiao Ray Dod Shih-Ger Chang Charles

2008-01-01T23:59:59.000Z

325

E-Print Network 3.0 - advanced mercury control Sample Search...  

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

Francisco Estuary Institute Collection: Environmental Sciences and Ecology 3 MERCURY POLLUTION PREVENTION IN MINNESOTA Emily Ray Moore Summary: applications Mercury in glass...

326

E-Print Network 3.0 - air pollution mercury Sample Search Results  

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

mercury Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution mercury Page: << < 1 2 3 4 5 > >> 1 Environment, Health and Safety...

327

FIELD TEST PROGRAM TO DEVELOP COMPREHENSIVE DESIGN, OPERATING, AND COST DATA FOR MERCURY CONTROL SYSTEMS  

SciTech Connect

PG&E NEG Salem Harbor Station Unit 1 was successfully tested for applicability of activated carbon injection as a mercury control technology. Test results from this site have enabled a thorough evaluation of mercury control at Salem Harbor Unit 1, including performance, estimated cost, and operation data. This unit has very high native mercury removal, thus it was important to understand the impacts of process variables on native mercury capture. The team responsible for executing this program included plant and PG&E headquarters personnel, EPRI and several of its member companies, DOE, ADA, Norit Americas, Inc., Hamon Research-Cottrell, Apogee Scientific, TRC Environmental Corporation, Reaction Engineering, as well as other laboratories. The technical support of all of these entities came together to make this program achieve its goals. Overall the objectives of this field test program were to determine the mercury control and balance-of-plant impacts resulting from activated carbon injection into a full-scale ESP on Salem Harbor Unit 1, a low sulfur bituminous-coal-fired 86 MW unit. It was also important to understand the impacts of process variables on native mercury removal (>85%). One half of the gas stream was used for these tests, or 43 MWe. Activated carbon, DARCO FGD supplied by NORIT Americas, was injected upstream of the cold side ESP, just downstream of the air preheater. This allowed for approximately 1.5 seconds residence time in the duct before entering the ESP. Conditions tested in this field evaluation included the impacts of the Selective Non-Catalytic Reduction (SNCR) system on mercury capture, of unburned carbon in the fly ash, of adjusting ESP inlet flue gas temperatures, and of boiler load on mercury control. The field evaluation conducted at Salem Harbor looked at several sorbent injection concentrations at several flue gas temperatures. It was noted that at the mid temperature range of 322-327 F, the LOI (unburned carbon) lost some of its ability to capture vapor phase Hg, however activated carbon performed relatively well. At the normal operating temperatures of 298-306 F, mercury emissions from the ESP were so low that both particulate and elemental mercury were ''not detected'' at the detection limits of the Ontario Hydro method for both baseline and injection tests. The oxidized mercury however, was 95% lower at a sorbent injection concentration of 10 lbs/MMacf compared with baseline emissions. When the flue gas temperatures were increased to a range of 343-347 F, mercury removal efficiencies were limited to <25%, even at the same sorbent injection concentration. Other tests examined the impacts of fly ash LOI, operation of the SNCR system, and flue gas temperature on the native mercury capture without sorbent injection. Listed below are the main conclusions from this program: (1) SNCR on/off test showed no beneficial effect on mercury removal caused by the SNCR system. (2) At standard operating temperatures ({approx} 300 F), reducing LOI from 30-35% to 15-20% had minimal impact on Hg removal. (3) Increasing flue gas temperatures reduced Hg removal regardless of LOI concentrations at Salem Harbor (minimum LOI was 15%). Native mercury removal started to fall off at temperatures above 320 F. ACI effectiveness for mercury removal fell off at temperatures above 340 F. (4) Test method detection limits play an important role at Salem Harbor due to the low residual emissions. Examining the proposed MA rule, both the removal efficiency and the emission concentrations will be difficult to demonstrate on an ongoing basis. (5) Under tested conditions the baseline emissions met the proposed removal efficiency for 2006, but not the proposed emission concentration. ACI can meet the more-stringent 2012 emission limits, as long as measurement detection limits are lower than the Ontario Hydro method. SCEM testing was able to verify the low emissions. For ACI to perform at this level, process conditions need to match those obtained during testing.

Michael D. Durham

2004-10-01T23:59:59.000Z

328

Mercury Control Demonstration Projects Cover Photos: * Top: Limestone Power Plant  

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

6 FEBRUARY 2008 6 FEBRUARY 2008 Mercury Control Demonstration Projects Cover Photos: * Top: Limestone Power Plant * Bottom left: AES Greenidge Power Plant * Bottom right: Presque Isle Power Plant A report on three projects conducted under separate cooperative agreements between the U.S. Department of Energy and: * Consol Energy * Pegasus Technologies * We Energies  Mercury Control Demonstration Projects Executive Summary ............................................................................ 4 Background ......................................................................................... 5 Mercury Removal Projects ................................................................ 7 TOXECON(tm) Retrofit For Mercury and Multi-Pollutant Control on Three 90-MW Coal-Fired Boilers ........................................7

329

Ch. VIII, Soil mercury investigations, Waunita Hot Springs |...  

Open Energy Info (EERE)

mercury investigations, Waunita Hot Springs Authors C. D. Ringrose and R. H. Pearl Editor T. G. Zacharakis Published Colorado Geological Survey in Cooperation with the U.S....

330

Mercury Vapor At Vale Hot Springs Area (Varekamp & Buseck, 1983...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Vale Hot Springs Area (Varekamp & Buseck, 1983) Exploration Activity Details...

331

Mercury Vapor At Breitenbush Hot Springs Area (Varekamp & Buseck...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Breitenbush Hot Springs Area (Varekamp & Buseck, 1983) Exploration Activity...

332

Mercury Vapor At Mickey Hot Springs Area (Varekamp & Buseck,...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Mickey Hot Springs Area (Varekamp & Buseck, 1983) Exploration Activity...

333

ORNL scientists solve mercury mystery | ornl.gov  

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

ORNL scientists solve mercury mystery February 07, 2013 Oak Ridge National Laboratory scientist Liyuan Liang, left, and a team of researchers have identified two genes required for...

334

Mercury Vapor At Desert Peak Area (Varekamp & Buseck, 1983) ...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Desert Peak Area (Varekamp & Buseck, 1983) Exploration Activity Details...

335

ORNL research reveals new challenges for mercury cleanup | ornl...  

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

Jennifer Brouner Communications 865.241.0709 ORNL research reveals new challenges for mercury cleanup ORNL researchers are learning more about the microbial processes that convert...

336

Mercury Vapor At Socorro Mountain Area (Kooten, 1987) | Open...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Socorro Mountain Area (Kooten, 1987) Exploration Activity Details Location...

337

Mercury Vapor At Lassen Volcanic National Park Area (Varekamp...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Lassen Volcanic National Park Area (Varekamp & Buseck, 1983) Exploration...

338

anthropogenic mercury emissions: Topics by E-print Network  

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

marine boundary layer Palmer, Paul 25 MERCURY EMISSIONS FROM A SIMULATED IN-SITU OIL SHALE RETORT University of California eScholarship Repository Summary: Effluents for...

339

Dissolved Organic Carbon Thresholds Affect Mercury Bioaccumulation in Arctic Lakes  

Science Journals Connector (OSTI)

Barkay, T.; Gillman, M.; Turner, R. R.Effects of dissolved organic carbon and salinity on bioavailability of mercury Appl. ... Barkay, Tamar; Gillman, Mark; Turner, Ralph R. ...

Todd D. French; Adam J. Houben; Jean-Pierre W. Desforges; Linda E. Kimpe; Steven V. Kokelj; Alexandre J. Poulain; John P. Smol; Xiaowa Wang; Jules M. Blais

2014-02-13T23:59:59.000Z

340

Mercury Vapor At Medicine Lake Area (Kooten, 1987) | Open Energy  

Open Energy Info (EERE)

Kooten, 1987) Kooten, 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Medicine Lake Area (Kooten, 1987) Exploration Activity Details Location Medicine Lake Area Exploration Technique Mercury Vapor Activity Date Usefulness could be useful with more improvements DOE-funding Unknown References Gerald K. Van Kooten (1987) Geothermal Exploration Using Surface Mercury Geochemistry Retrieved from "http://en.openei.org/w/index.php?title=Mercury_Vapor_At_Medicine_Lake_Area_(Kooten,_1987)&oldid=386431" Category: Exploration Activities What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation:

Note: This page contains sample records for the topic "mercury levels cxs" 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

Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical  

Open Energy Info (EERE)

Geochemical, Groundwater Geochemical, And Radiometric Geophysical Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three Geothermal Prospects In Northern Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical Signatures At Three Geothermal Prospects In Northern Nevada Details Activities (14) Areas (3) Regions (0) Abstract: Ground water sampling, desorbed mercury soil geochemical surveys and a radiometric geophysical survey was conducted in conjunction with geological mapping at three geothermal prospects in northern Nevada. Orientation sample lines from 610 m (2000 ft.) to 4575 m (15,000 ft.) in length were surveyed at right angles to known and suspected faults. Scintillometer readings (gamma radiation - total counts / second) were also

342

Langmuir Films of Polycyclic Molecules on Mercury  

SciTech Connect

Langmuir films (LFs) of biphenyl and anthracene derivatives on the surface of liquid mercury were studied by surface-specific X-ray and surface tension measurements. Phases of lying-down, side-lying and standing-up molecules were found, some of which exhibit long-range lateral order. The molecular symmetry and the position and nature of the side-, end-, and headgroups are shown to dominate the structural evolution of the LFs with surface coverage.

Tamam,L.; Kraack, H.; Sloutskin, E.; Ocko, B.; Pershan, P.; Deutsch, M.

2007-01-01T23:59:59.000Z

343

An evaluation of elemental mercury vapor exposure to children due to silver-mercury dental amalgam restorations  

E-Print Network (OSTI)

AN EVALUATION OF ELEMENTAL MERCURY VAPOR EXPOSURE TO CHILDREN DUE TO SILVER-MERCURY DENTAL AMALGAM RESTORATIONS A Thesis By RONALD DALE TAYLOR Submitted to the Office of Graduate Studies College Texas A&M University in partial fulfillment.... . . . . 1X LIST OF FIGURES. I. INTRODUCTION. II ' LITERATURE REVIEW Dental Mercury Toxicology Body Burden. Inhalation Exposure. Childhood Exposure III. METHODOLOGY. . . . 3 5 . . . 8 . . . 10 . . . 14 . 16 Human Research Committee...

Taylor, Ronald Dale

1989-01-01T23:59:59.000Z

344

The free precession and libration of Mercury  

E-Print Network (OSTI)

An analysis based on the direct torque equations including tidal dissipation and a viscous core-mantle coupling is used to determine the damping time scales of O(10^5) years for free precession of the spin about the Cassini state and free libration in longitude for Mercury. The core-mantle coupling dominates the damping over the tides by one to two orders of magnitude for the plausible parameters chosen. The short damping times compared with the age of the solar system means we must find recent or on-going excitation mechanisms if such free motions are found by the current radar experiments or the future measurement by the MESSENGER and BepiColombo spacecraft that will orbit Mercury. We also show that the average precession rate is increased by about 30% over that obtained from the traditional precession constant because of a spin-orbit resonance induced contribution by the C_{22} term in the expansion of the gravitational field. The C_{22} contribution also causes the path of the spin during the precession to be slightly elliptical with a variation in the precession rate that is a maximum when the obliquity is a minimum. An observable free precession will compromise the determination of obliquity of the Cassini state and hence of C/MR^2 for Mercury, but a detected free libration will not compromise the determination of the forced libration amplitude and thus the verification of a liquid core

S. J. Peale

2005-07-06T23:59:59.000Z

345

NETL: Mercury Emissions Control Technologies - On-Site Production of  

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

On-Site Production of Mercury Sorbent with Low Concrete Impact On-Site Production of Mercury Sorbent with Low Concrete Impact The detrimental health effects of mercury are well documented. Furthermore, it has been reported that U.S. coal-fired plants emit approximately 48 tons of mercury a year. To remedy this, the U.S. Environmental Protection Agency (EPA) released the Clean Air Mercury Rule (CAMR) on March 15, 2005. A promising method to achieve the mandated mercury reductions is activated carbon injection (ACI). While promising, the current cost of ACI for mercury capture is expensive, and ACI adversely impacts the use of the by-product fly-ash for concrete. Published prices for activated carbon are generally 0.5-1 $/lb and capital costs estimates are 2-55 $/KW. Because of the high costs of ACI, Praxair started feasibility studies on an alternative process to reduce the cost of mercury capture. The proposed process is composed of three steps. First, a hot oxidant mixture is created by using a proprietary Praxair burner. Next, the hot oxidant is allowed to react with pulverized coal and additives. The resulting sorbent product is separated from the resulting syngas. In a commercial installation, the resulting sorbent product would be injected between the air-preheater and the particulate control device.

346

NETL: Mercury Emissions Control Technologies - Amended Silicates for  

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

Amended Silicates for Mercury Control Amended Silicates for Mercury Control The project is designed to implement a comprehensive demonstration of the use of Amended Silicates for mercury control on a commercial-scale generating unit. Miami Fort Unit 6 burns eastern bituminous coal, has a nominal output of 175 MW, and a flue gas volumetric flow of 535,000 actual cubic feet per minute (acfm) at full load. The demonstration includes a baseline phase with no injection of mercury control sorbents, injection of carbon to develop a mercury-control technology baseline for sorbent performance comparison, and the injection of Amended Silicates at several rates. All sorbent will be injected upstream of the existing electro-static precipitators (ESPs) on the host unit, providing a nominal 1-second contact time before the gas flow enters an ESP. Mercury measurements will be made upstream of the sorbent injection and downstream of the first ESP to characterize the performance of the sorbent technologies. In addition, samples of coal and fly ash will be collected and analyzed to provide data for a mercury mass balance for the unit. The mercury measurements will be made with continuous emissions monitors as well as with Ontario-Hydro wet-chemistry sampling. Samples of fly ash plus sorbent from demonstration cases which include Amended Silicate sorbent injection will be collected from ESP hoppers for use in concrete testing to confirm the suitability of the material as a portland cement replacement.

347

Mercury removal in utility wet scrubber using a chelating agent  

DOE Patents (OSTI)

A method for capturing and reducing the mercury content of an industrial flue gas such as that produced in the combustion of a fossil fuel or solid waste adds a chelating agent, such as ethylenediaminetetraacetic acid (EDTA) or other similar compounds like HEDTA, DTPA and/or NTA, to the flue gas being scrubbed in a wet scrubber used in the industrial process. The chelating agent prevents the reduction of oxidized mercury to elemental mercury, thereby increasing the mercury removal efficiency of the wet scrubber. Exemplary tests on inlet and outlet mercury concentration in an industrial flue gas were performed without and with EDTA addition. Without EDTA, mercury removal totaled 42%. With EDTA, mercury removal increased to 71%. The invention may be readily adapted to known wet scrubber systems and it specifically provides for the removal of unwanted mercury both by supplying S.sup.2- ions to convert Hg.sup.2+ ions into mercuric sulfide (HgS) and by supplying a chelating agent to sequester other ions, including but not limited to Fe.sup.2+ ions, which could otherwise induce the unwanted reduction of Hg.sup.2+ to the form, Hg.sup.0.

Amrhein, Gerald T. (Louisville, OH)

2001-01-01T23:59:59.000Z

348

SNS Experimental Facilities Oak Ridge SNS Mercury Target Issues and  

E-Print Network (OSTI)

SNS Experimental Facilities Oak Ridge SNS Mercury Target Issues and Development Program J. R. Haines October 30, 2000 #12;SNS Experimental Facilities Oak Ridge2 Outline · SNS Target Requirements;SNS Experimental Facilities Oak Ridge3 Mercury Target Requirements · 2 MW average proton beam power

McDonald, Kirk

349

Is Mercury from Hawaiian Volcanoes a Natural Source of Pollution?  

Science Journals Connector (OSTI)

... ml. with distilled water. Portions of 20 ml. were analysed for mercury content by flameless atomic absorption at the 253.65 nm resonance line. We used a Utopia Instruments ... atomic absorption at the 253.65 nm resonance line. We used a Utopia Instruments flameless mercury analysis kit6 and a 10 cm absorption cell mounted on the burner of a ...

ALAN ESHLEMAN; SANFORD M. SIEGEL; BARBARA Z. SIEGEL

1971-10-15T23:59:59.000Z

350

BIOGEOCHEMICAL CYCLING OF MERCURY: Insights from global modeling  

E-Print Network (OSTI)

industrialization Major anthropogenic source is stationary combustion (coal) Atmospheric transport and deposition.S. National Science Foundation Atmospheric Chemistry Program #12;FROM ATMOSPHERE TO FISH: MERCURY RISING Ice; Selin et al., Ann. Rev. Env. Res., submitted] #12;MERCURY: ATMOSPHERIC CHEMISTRY OH,O3,Br

Selin, Noelle Eckley

351

Simulation of High-Intensity Mercury Jet Targets  

E-Print Network (OSTI)

kernels, EOS and other physics models · Exact conservation of mass (Lagrangian code) · Natural with proton pulses Entrance of spent mercury jets into the mercury pool #12;Muon Collider: 15 bunches / s 66 of the cavitation zone in water (the interval between frames is 200 s) But what is the internal structure

McDonald, Kirk

352

Activated carbon injection - a mercury control success story  

SciTech Connect

Almost 100 full-scale activated carbon injection (ACI) systems have been ordered by US electric utilities. These systems have the potential to remove over 90% of the mercury in flue, at a cost below $10,000 per pound of mercury removal. Field trials of ACI systems arm outlined. 1 fig.

NONE

2008-07-01T23:59:59.000Z

353

FIELD TEST PROGRAM TO DEVELOP COMPREHENSIVE DESIGN, OPERATING, AND COST DATA FOR MERCURY CONTROL SYSTEMS  

SciTech Connect

With the Nation's coal-burning utilities facing the possibility of tighter controls on mercury pollutants, the U.S. Department of Energy is funding projects that could offer power plant operators better ways to reduce these emissions at much lower costs. Mercury is known to have toxic effects on the nervous system of humans and wildlife. Although it exists only in trace amounts in coal, mercury is released when coal burns and can accumulate on land and in water. In water, bacteria transform the metal into methylmercury, the most hazardous form of the metal. Methylmercury can collect in fish and marine mammals in concentrations hundreds of thousands times higher than the levels in surrounding waters. One of the goals of DOE is to develop technologies by 2005 that will be capable of cutting mercury emissions 50 to 70 percent at well under one-half of today's costs. ADA Environmental Solutions (ADA-ES) is managing a project to test mercury control technologies at full scale at four different power plants from 2000--2003. The ADA-ES project is focused on those power plants that are not equipped with wet flue gas desulfurization systems. ADA-ES has developed a portable system that will be tested at four different utility power plants. Each of the plants is equipped with either electrostatic precipitators or fabric filters to remove solid particles from the plant's flue gas. ADA-ES's technology will inject a dry sorbent, such as activated carbon, which removes the mercury and makes it more susceptible to capture by the particulate control devices. A fine water mist may be sprayed into the flue gas to cool its temperature to the range where the dry sorbent is most effective. PG&E National Energy Group is providing two test sites that fire bituminous coals and both are equipped with electrostatic precipitators and carbon/ash separation systems. Wisconsin Electric Power Company is providing a third test site that burns Powder River Basin (PRB) coal and has an electrostatic precipitator for particulate control. Alabama Power Company will host a fourth test at its Plant Gaston, which is equipped with a hot-side electrostatic precipitator and a downstream fabric filter.

Michael D. Durham

2003-05-01T23:59:59.000Z

354

Thermally Speciated Mercury in Mineral Exploration | Open Energy  

Open Energy Info (EERE)

Thermally Speciated Mercury in Mineral Exploration Thermally Speciated Mercury in Mineral Exploration Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Thermally Speciated Mercury in Mineral Exploration Abstract Abstract unavailable. Author S.C. Smith Conference IGES; Dublin, CA; 2003/09/01 Published IGES, 2003 DOI Not Provided Check for DOI availability: http://crossref.org Citation S.C. Smith. 2003. Thermally Speciated Mercury in Mineral Exploration. In: Programs & Abstracts: Soil and Regolith Geochemistry in the Search for Mineral Deposits. IGES; 2003/09/01; Dublin, CA. Dublin, CA: IGES; p. 78 Retrieved from "http://en.openei.org/w/index.php?title=Thermally_Speciated_Mercury_in_Mineral_Exploration&oldid=681717" Categories: References Geothermal References

355

Regional and Global Data in Mercury, December 2000  

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

Regional and Global Data in Mercury Regional and Global Data in Mercury Regional and global biogeochemical dynamics data can now be located and acquired through a metadata search system at the ORNL DAAC. Climate, hydroclimatology, soil, and vegetation data held by data centers around the world are available through a Web-based system called "Mercury." Mercury allows users to search metadata files to identify data sets of interest, and it directs the users to the data. The data sets indexed in Mercury were chosen by the ORNL DAAC's User Working Group as important to the global change research community for understanding the function of terrestrial ecosystems and for examining patterns across temporal and spatial scales. The following types of regional and global data are currently indexed in

356

NETL: Mercury Emissions Control Technologies - Preliminary Field Evaluation  

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

Preliminary Field Evaluation of Mercury Control Using Combustion Modifications Preliminary Field Evaluation of Mercury Control Using Combustion Modifications General Electric – Energy and Environmental Research Corporation is developing a new technology that reduces the cost of mercury removal from flue gas by combining it with carbon reduction in a burnout system and simultaneously controlling nitrogen oxides emissions. Data on mercury removal at Western Kentucky Electric’s Green Station will be obtained and used to assess options to improve the efficiency of mercury removal. These options will be further investigated in pilot-scale testing on a 300 kW combustor. Related Papers and Publications: Preliminary Field Evaluation of Hg Control Using Combustion Modifications [PDF-732KB] - Presented at the 2004 Electric Utilities Environmental Conference, Tucson, AZ - January 19-22, 2004.

357

Innovative Mercury Treatment Benefits Stream, Fish | Department of Energy  

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

Mercury Treatment Benefits Stream, Fish Mercury Treatment Benefits Stream, Fish Innovative Mercury Treatment Benefits Stream, Fish October 1, 2012 - 12:00pm Addthis Oak Ridge scientists Kelly Roy, left, and Trent Jett collect fish samples in 2011 to support research on the impacts of the treatment in Tims Branch, a small stream at the Savannah River Site. Oak Ridge scientists Kelly Roy, left, and Trent Jett collect fish samples in 2011 to support research on the impacts of the treatment in Tims Branch, a small stream at the Savannah River Site. The M1 Air Stripper system at Savannah River Site, pictured here, was modified in 2007 to remove mercury. The M1 Air Stripper system at Savannah River Site, pictured here, was modified in 2007 to remove mercury. Oak Ridge scientists Kelly Roy, left, and Trent Jett collect fish samples in 2011 to support

358

Catalysts for Oxidation of Mercury in Flue Gas  

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

Catalysts for Oxidation of Mercury in Flue Gas Catalysts for Oxidation of Mercury in Flue Gas Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing United States Patent Number 7,776,780 entitled "Catalysts for Oxidation of Mercury in Flue Gas." Disclosed in this patent are catalysts for the oxidation of elemental mercury in flue gas. These novel catalysts include iridium (Ir), platinum/iridium (Pt/Ir), and Thief carbons. The catalyst materials will adsorb the oxidizing agents HCl, Cl 2 , and other halogen species in the flue gas stream that are produced when fuel is combusted. These adsorbed oxidizing agents can then react with elemental mercury in the stream, which is difficult to capture, and oxidize it to form Hg (II) species,

359

Remediation of Mercury and Industrial Contaminants Applied Field Research  

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

Remediation of Mercury and Industrial Contaminants Applied Field Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative (RoMIC-AFRI) Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative (RoMIC-AFRI) Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative (RoMIC-AFRI) Located on the Oak Ridge Reservation (ORR) in Oak Ridge, Tennessee, the RoMIC-AFRI was established to protect water resources by addressing the challenge of preventing contamination. The initiative at Oak Ridge is a collaborative effort that leverages DOE investments in basic science and applied research and the work of site contractors to address the complex challenges in the remediation of legacy waste at the Oak Ridge Reservation. The mission of the Remediation of Mercury and Industrial Contaminants

360

NETL: Mercury Emissions Control Technologies - Evaluation of Control  

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

Evaluation of Control Strategies to Effectively Meet 70 - 90% Evaluation of Control Strategies to Effectively Meet 70 - 90% Mercury Reduction on an Eastern Bituminous Coal Cyclone Boiler with SCR The overall objective of this project is to assess the potential for significant mercury control, between 50 and 90% above baseline, by sorbent injection for the challenging technical process configuration at Public Service of New Hampshire Company Merrimack Station Unit No. 2. The primary emphasis of this project is to evaluate the performance of mercury sorbent injection, but the effect of co-benefits from SO3 mitigation on mercury control will also be explored. Also in this program the performance capabilities of mercury measurement techniques in challenging flue-gas environment will be assessed and the impact of activated carbon injection on fly ash disposal options will be investigated.

Note: This page contains sample records for the topic "mercury levels cxs" 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

NETL: Mercury Emissions Control Technologies - University of North Dakota,  

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

Table Of Contents for Field Testing Enhancing Carbon Reactivity in Mercury Control in Lignite-Fired Systems Mercury Oxidation Upstream of an ESP and Wet FGD Enhancing Carbon Reactivity in Mercury Control in Lignite-Fired Systems The scope of the project consists of attempting to control mercury at four different power plants using two novel concepts. The first concept is using furnace additives that will enhance the sorbent effectiveness for mercury capture. The other concept involves using novel treated carbons to significantly increase sorbent reactivity and resultant capture of Hg. The furnace additives will be tested at Leland Olds Station and Antelope Valley Station while the novel sorbents will be tested at Stanton Station Units 1 &10. Related Papers and Publications:

362

Microsoft PowerPoint - DOELM_Mercury_Storage.ppt  

Office of Legacy Management (LM)

Mercury Storage Concept Mercury Storage Concept Pre-Environmental Impact Statement Grand Junction, Colorado, Scoping Meeting Information 2 Mercury Export Ban Act Passed into law in October 2008 Purpose is to prohibit the export of mercury Identifies the Department of Energy (DOE) as the agency to provide long-term storage with collaboration from the Environmental Protection Agency (EPA) Requires: * Guidance on standards and procedures by October 1, 2009 * Facility will be constructed and operated to hazardous waste requirements * A facility be designated by January 1, 2010 * Operations to begin by January 1, 2013 3 Stockpiles of Mercury DOE stores approximately 1,200 metric tons at the Oak Ridge Reservation Department of Defense stores approximately 4,400 metric tons EPA estimates that between 7,500 and 10,000 metric

363

Semi-Continuous Detection of Mercury in Gases  

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

Continuous Detection of Mercury in Gases Continuous Detection of Mercury in Gases Opportunity Research is currently active on the patented technology "Semi-Continuous Detection of Mercury in Gases." The technology, which is a spinoff of the National Energy Technology Laboratory's (NETL) GP-254 Process (U.S. patent 6,576,092), is available for licensing and/or further collaborative research from the U.S. Department of Energy's NETL. Overview This invention discloses a method for the quantitative detection of heavy metals, especially mercury, in effluent gas streams. The method employs photo-deposition and an array of surface acoustic wave sensors where each sensor monitors a specific metal. The U.S. Environmental Protection Agency issued a national regulation for mercury removal from coal-derived flue and fuel gases in December 2011,

364

EIS-0423: Storage and Management of Elemental Mercury | Department of  

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

23: Storage and Management of Elemental Mercury 23: Storage and Management of Elemental Mercury EIS-0423: Storage and Management of Elemental Mercury Summary This EIS evaluates the environmental impacts associated with the reasonable alternatives for managing and storing elemental mercury at seven candidate locations (i.e., Colorado, Idaho, Missouri, Nevada, South Carolina, Texas, and Washington). The U.S. Environmental Protection Agency, the Texas Commission on Environmental Quality, and the Mesa County Board of Commissioners (Mesa County, Colorado) are cooperating agencies in the preparation of this EIS. Public Comment Opportunities None available at this time. Documents Available for Download June 5, 2012 EIS-0423-S1: Notice of Intent to Prepare a Supplemental Environmental Impact Statement Long-Term Management and Storage of Elemental Mercury

365

Appendix: Mercury Emissions used in CAM-Chem/Hg model. 1. Anthropogenic emissions  

E-Print Network (OSTI)

Appendix: Mercury Emissions used in CAM-Chem/Hg model. 1. Anthropogenic emissions The anthropogenic emission of mercury is directly adopted from global mercury emission inventory [Pacyna et al., 2005]. The anthropogenic emissions are shown in annual averaged total mercury emissions. (Unit: µg/m2 /day) 2. Land

Meskhidze, Nicholas

366

Lifestyle and Mercury Contamination of Amerindian Populations along the Beni River  

E-Print Network (OSTI)

1 Lifestyle and Mercury Contamination of Amerindian Populations along the Beni River (Lowland (Corresponding author), M.D., Ph.D. Abstract The objective of this paper was to document mercury contamination at the foothills of the Andes. Hair mercury content (H-Hg) served as a bioindicator of mercury contamination

Paris-Sud XI, Université de

367

Apparatus and method for removing mercury vapor from a gas stream  

DOE Patents (OSTI)

A metallic filter effectively removes mercury vapor from gas streams. The filter captures the mercury which then can be released and collected as product. The metallic filter is a copper mesh sponge plated with a six micrometer thickness of gold. The filter removes up to 90% of mercury vapor from a mercury contaminated gas stream.

Ganesan, Kumar (Butte, MT)

2008-01-01T23:59:59.000Z

368

DESIGN OF THE MERCURY HANDLING SYSTEM FOR A MUON COLLIDER/NEUTRINO FACTORY TARGET  

E-Print Network (OSTI)

DESIGN OF THE MERCURY HANDLING SYSTEM FOR A MUON COLLIDER/NEUTRINO FACTORY TARGET V.B. Graves , Oak is a free mercury jet within a 20-T magnetic field being impacted by an 8-GeV proton beam. A pool of mercury serves as a receiving reservoir for the mercury and a dump for the unexpended proton beam. Modifications

McDonald, Kirk

369

E-Print Network 3.0 - acute mercury inhalation Sample Search...  

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

OF Summary: ECONOMIC COMMISSION FOR EUROPE Geneva HEMISPHERIC TRANSPORT OF AIR POLLUTION 2010 PART B: MERCURY... ......

370

E-Print Network 3.0 - acute mercury poisoning Sample Search Results  

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

OF Summary: ECONOMIC COMMISSION FOR EUROPE Geneva HEMISPHERIC TRANSPORT OF AIR POLLUTION 2010 PART B: MERCURY... ......

371

E-Print Network 3.0 - abandoned halkoy mercury Sample Search...  

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

OF Summary: ECONOMIC COMMISSION FOR EUROPE Geneva HEMISPHERIC TRANSPORT OF AIR POLLUTION 2010 PART B: MERCURY... ......

372

Mercury Free UCI Environmental Health and Safety (EH&S) is sponsoring a  

E-Print Network (OSTI)

Thermometer Exchange Program to: · Reduce the health and environmental risks of mercury pollution, · ReduceMercury Free UCI Environmental Health and Safety (EH&S) is sponsoring a Laboratory Mercury. Principal Investigator Name: Lab Contact Name: Phone: Building: Room: 1. Number of Intact Mercury

George, Steven C.

373

Emissions of airborne toxics from coal-fired boilers: Mercury  

SciTech Connect

Concerns over emissions of hazardous air Pollutants (air toxics) have emerged as a major environmental issue, and the authority of the US Environmental Protection Agency to regulate such pollutants was greatly expanded through the Clean Air Act Amendments of 1990. Mercury has been singled out for particular attention because of concerns over possible effects of emissions on human health. This report evaluates available published information on the mercury content of coals mined in the United States, on mercury emitted in coal combustion, and on the efficacy of various environmental control technologies for controlling airborne emissions. Anthracite and bituminous coals have the highest mean-mercury concentrations, with subbituminous coals having the lowest. However, all coal types show very significant variations in mercury concentrations. Mercury emissions from coal combustion are not well-characterized, particularly with regard to determination of specific mercury compounds. Variations in emission rates of more than an order of magnitude have been reported for some boiler types. Data on the capture of mercury by environmental control technologies are available primarily for systems with electrostatic precipitators, where removals of approximately 20% to over 50% have been reported. Reported removals for wet flue-gas-desulfurization systems range between 35 and 95%, while spray-dryer/fabric-filter systems have given removals of 75 to 99% on municipal incinerators. In all cases, better data are needed before any definitive judgments can be made. This report briefly reviews several areas of research that may lead to improvements in mercury control for existing flue-gas-clean-up technologies and summarizes the status of techniques for measuring mercury emissions from combustion sources.

Huang, H.S.; Livengood, C.D.; Zaromb, S.

1991-09-01T23:59:59.000Z

374

Mercury abatement report on the U.S. Department of Energy`s Oak Ridge Y-12 Plant. Fiscal year 1996  

SciTech Connect

This report summarizes the status of activities and the levels of mercury contamination in Upper East Fork Poplar Creek (UEFPC) resulting from activities at the Department of Energy`s (DOE`s) Y-12 Facility during fiscal year 1996 (FY96). The report outlines the status of ongoing and new project activities in support of project goals, the results of sampling and characterization efforts conducted during FY 1996, biological monitoring activities, and our conclusions relative to the progress in demonstrating compliance with the National Pollutant Discharge Elimination (NPDES) permit. Although the pace of mercury remediation activities at DOE`s Y-12 Plant is ahead of the compliance schedule established in the NPDES permit, the resulting level of mercury in UEFPC is higher than predicted based on the projects completed. Fortunately, recently recognized opportunities are being pursued for implementation in the next two years to assist in meeting permit requirements.

NONE

1996-11-01T23:59:59.000Z

375

Quantification of total mercury in liver and heart tissue of Harbor Seals (Phoca vitulina) from Alaska USA  

SciTech Connect

This study quantified the Hg levels in the liver (n=98) and heart (n=43) tissues of Harbor Seals (Phoca vitulina) (n=102) harvested from Prince William Sound and Kodiak Island Alaska. Mercury tissue dry weight (dw) concentrations in the liver ranged from 1.7 to 393 ppm dw, and in the heart from 0.19 to 4.99 ppm dw. Results of this study indicate liver and heart tissues' Hg ppm dw concentrations significantly increase with age. Male Harbor Seals bioaccumulated Hg in both their liver and heart tissues at a significantly faster rate than females. The liver Hg bioaccumulation rates between the harvest locations Kodiak Island and Prince William Sound were not found to be significantly different. On adsorption Hg is transported throughout the Harbor Seal's body with the partition coefficient higher for the liver than the heart. No significant differences in the bio-distribution (liver:heart Hg ppm dw ratios (n=38)) values were found with respect to either age, sex or geographic harvest location. In this study the age at which Hg liver and heart bioaccumulation levels become significantly distinct in male and female Harbor Seals were identified through a Tukey's analysis. Of notably concern to human health was a male Harbor Seal's liver tissue harvested from Kodiak Island region. Mercury accumulation in this sample tissue was determined through a Q-test to be an outlier, having far higher Hg concentrarion (liver 392 Hg ppm dw) than the general population sampled. - Highlights: Black-Right-Pointing-Pointer Mercury accumulation in the liver and heart of seals exceed food safety guidelines. Black-Right-Pointing-Pointer Accumulation rate is greater in males than females with age. Black-Right-Pointing-Pointer Liver mercury accumulation is greater than in the heart tissues. Black-Right-Pointing-Pointer Mercury determination by USA EPA Method 7473 using thermal decomposition.

Marino, Kady B. [Department of Chemistry, Roger Williams University, Bristol, RI 02809 (United States)] [Department of Chemistry, Roger Williams University, Bristol, RI 02809 (United States); Hoover-Miller, Anne; Conlon, Suzanne; Prewitt, Jill [Alaska SeaLife Center, City of Seward, AK (United States)] [Alaska SeaLife Center, City of Seward, AK (United States); O'Shea, Stephen K., E-mail: soshea@rwu.edu [Department of Chemistry, Roger Williams University, Bristol, RI 02809 (United States)

2011-11-15T23:59:59.000Z

376

NETL: Conference Proceedings - 2007 Mercury Control Technology Conference  

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

2007 Mercury Control Technology Conference 2007 Mercury Control Technology Conference December 11-13, 2007 Table of Contents Disclaimer Papers and Presentations Overview Sorbent Injection Panel Discussion #1: Sorbents for Mercury Control Mercury Oxidaton and Co-Removal with FGD Systems By-Product Characterization/Management Panel Discussion #2: Mercury Measurements / CEMS Other Mercury Control Technology Panel Discussion #3: Non-Sorbent Mercury Control Poster Presentations Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government or any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

377

Leaching of Phase II Mercury Control Technology By-Products  

SciTech Connect

The U.S. EPA has issued a final regulation for control of mercury from coal-fired power plants. An NETL research, development and demonstration program under DOE/Fossil Energy Innovations for Existing Plants is directed toward the improvement of the performance and economics of mercury control from coal-fired plants. The current Phase II of the RD&D program emphasizes the evaluation of performance and cost of control technologies through slip-stream and full scale field testing while continuing the development of novel concepts. One of the concerns of the NETL program is the fate of the captured flue gas mercury which is transferred to the condensed phase by-product stream. These adulterated by-products, both ashes and FGD material, represent the greatest challenge to the DOE goal of increased utilization of by-products. The degree of stability of capture by-products and their potential for release of mercury can have a large economic impact on material sales or the approach to disposal. One of the considerations for mercury control technology is the potential trade-off between effective but temporary mercury capture and less effective but more permanent sequestration. As part of a greater characterization effort of Phase II facility baseline and control technology sample pairs, NETL in-house laboratories have performed aqueous leaching procedures on a select subset of the available sample pairs. This report describes batch leaching results for mercury, arsenic, and selenium.

Hesbach, P.A.; Kachur, E.K.

2007-07-01T23:59:59.000Z

378

The Origin of the Mercury Bands at 2480A  

Science Journals Connector (OSTI)

The group of eight mercury bands near 2480A was photographed under varied excitation conditions with the purpose of determining their origin. The source was a discharge through mercury vapor produced in a quartz tube through external electrodes by a low-voltage Tesla coil. Five tubes containing distilled mercury and commercial mercury arc lamp showed this group of bands. These bands were weakened by heat along with known mercury bands. The origin is undoubtedly some form of mercury molecule. The most probable forms are Hg2+ and Hg2. Five observations favor Hg2+ over Hg2. (1) These bands have never been observed in fluorescence. (2) The 2476 band is more intense than the 2345 Hg2 band under strong field excitation but weaker than 2345 under low field excitation. (3) No other bands with properties like those of the 2480 group have been observed in the mercury spectrum and Rayleigh has shown that these bands do not occur in absorption. (4) The bands in this group may be classified as sequences v?-v??=0123, and a lower limit for D of 0.3 volts estimated. (5) In the v?-v??=0 sequence, emission is observed from state v?=41 indicating molecules with very high vibrational energy. This energy may be supplied by the electric field if the emitter is an ion but not if it is a neutral molecule.

J. Gibson Winans

1932-12-15T23:59:59.000Z

379

FIELD TEST PROGRAM FOR LONG-TERM OPERATION OF A COHPAC SYSTEM FOR REMOVING MERCURY FROM COAL-FIRED FLUE GAS  

SciTech Connect

With the Nation's coal-burning utilities facing the possibility of tighter controls on mercury pollutants, the U.S. Department of Energy is funding projects that could offer power plant operators better ways to reduce these emissions at much lower costs. Sorbent injection technology represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. It involves injecting a solid material such as powdered activated carbon into the flue gas. The gas-phase mercury in the flue gas contacts the sorbent and attaches to its surface. The sorbent with the mercury attached is then collected by the existing particle control device along with the other solid material, primarily fly ash. During 2001, ADA Environmental Solutions (ADA-ES) conducted a full-scale demonstration of sorbent-based mercury control technology at the Alabama Power E.C. Gaston Station (Wilsonville, AL). This unit burns a low-sulfur bituminous coal and uses a hot-side electrostatic precipitator (ESP) in combination with a Compact Hybrid Particulate Collector (COHPAC{trademark}) baghouse to collect fly ash. The majority of the fly ash is collected in the ESP with the residual being collected in the COHPAC{trademark} baghouse. Activated carbon was injected between the ESP and COHPAC{trademark} units to collect the mercury. Short-term mercury removal levels in excess of 90% were achieved using the COHPAC{trademark} unit. The test also showed that activated carbon was effective in removing both forms of mercury--elemental and oxidized. However, a great deal of additional testing is required to further characterize the capabilities and limitations of this technology relative to use with baghouse systems such as COHPAC{trademark}. It is important to determine performance over an extended period of time to fully assess all operational parameters. The project described in this report focuses on fully demonstrating sorbent injection technology at a coal-fired power generating plant that is equipped with a COHPAC{trademark} system. The overall objective is to evaluate the long-term effects of sorbent injection on mercury capture and COHPAC{trademark} performance. The work is being done on one-half of the gas stream at Alabama Power Company's Plant Gaston Unit 3 (nominally 135 MW). Data from the testing will be used to determine: (1) If sorbent injection into a high air-to-cloth ratio baghouse is a viable, long-term approach for mercury control; and (2) Design criteria and costs for new baghouse/sorbent injection systems that will use a similar, polishing baghouse (TOXECON{trademark}) approach.

Jean Bustard; Charles Lindsey; Paul Brignac; Travis Starns; Sharon Sjostrom; Trent Taylor; Cindy Larson

2004-01-29T23:59:59.000Z

380

Field Test Program for Long-Term Operation of a COHPAC System for Removing Mercury from Coal-Fired Flue Gas  

SciTech Connect

With the Nation's coal-burning utilities facing the possibility of tighter controls on mercury pollutants, the U.S. Department of Energy is funding projects that could offer power plant operators better ways to reduce these emissions at much lower costs. Sorbent injection technology represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. It involves injecting a solid material such as powdered activated carbon into the flue gas. The gas-phase mercury in the flue gas contacts the sorbent and attaches to its surface. The sorbent with the mercury attached is then collected by the existing particle control device along with the other solid material, primarily fly ash. During 2001, ADA Environmental Solutions (ADA-ES) conducted a full-scale demonstration of sorbent-based mercury control technology at the Alabama Power E.C. Gaston Station (Wilsonville, Alabama). This unit burns a low-sulfur bituminous coal and uses a hot-side electrostatic precipitator (ESP) in combination with a Compact Hybrid Particulate Collector (COHPAC{reg_sign}) baghouse to collect fly ash. The majority of the fly ash is collected in the ESP with the residual being collected in the COHPAC{reg_sign} baghouse. Activated carbon was injected between the ESP and COHPAC{reg_sign} units to collect the mercury. Short-term mercury removal levels in excess of 90% were achieved using the COHPAC{reg_sign} unit. The test also showed that activated carbon was effective in removing both forms of mercury-elemental and oxidized. However, a great deal of additional testing is required to further characterize the capabilities and limitations of this technology relative to use with baghouse systems such as COHPAC{reg_sign}. It is important to determine performance over an extended period of time to fully assess all operational parameters. The project described in this report focuses on fully demonstrating sorbent injection technology at a coal-fired power generating plant that is equipped with a COHPAC{reg_sign} system. The overall objective is to evaluate the long-term effects of sorbent injection on mercury capture and COHPAC{reg_sign} performance. The work is being done on one-half of the gas stream at Alabama Power Company's Plant Gaston Unit 3 (nominally 135 MW). Data from the testing will be used to determine: (1) If sorbent injection into a high air-to-cloth ratio baghouse is a viable, long-term approach for mercury control; and (2) Design criteria and costs for new baghouse/sorbent injection systems that will use a similar, polishing baghouse (TOXECON{trademark}) approach.

Jean Bustard; Charles Lindsey; Paul Brignac; Travis Starns; Sharon Sjostrom; Trent Taylor; Cindy Larson

2004-06-04T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Fundamentals of Mercury Oxidation in Flue Gas  

SciTech Connect

The objective of this project is to understand the importance of and the contribution of gas-phase and solid-phase coal constituents in the mercury oxidation reactions. The project involves both experimental and modeling efforts. The team is comprised of the University of Utah, Reaction Engineering International, and the University of Connecticut. The objective is to determine the experimental parameters of importance in the homogeneous and heterogeneous oxidation reactions; validate models; and, improve existing models. Parameters to be studied include HCl, NO{sub x}, and SO{sub 2} concentrations, ash constituents, and temperature. This report summarizes Year 2 results for the experimental and modeling tasks. Experiments in the mercury reactor are underway and interesting results suggested that a more comprehensive look at catalyzed surface reactions was needed. Therefore, much of the work has focused on the heterogeneous reactions. In addition, various chemical kinetic models have been explored in an attempt to explain some discrepancies between this modeling effort and others.

JoAnn S. Lighty; Geoffrey Silcox; Andrew Fry; Constance Senior; Joseph Helble; Balaji Krishnakumar

2005-08-01T23:59:59.000Z

382

Study on PCB 101, PCB 153, mercury and methyl mercury content in blue crab Portunus Pelagicus from Khuzestan shore (Persian Gulf)  

Science Journals Connector (OSTI)

Distribution of polychlorinated biphenyl (PCB 101, PCB 153), Mercury (Hg) and methyl mercury (MMHg) in muscle, gill and hepatopancreas of blue swimming crab Portunus segnis from Persian Gulf were investigated. In...

Abdolah Raeisi Sarasiab; Mehdi Hosseini

2014-06-01T23:59:59.000Z

383

Transient Model for Behavior of Mercury in Portland Cement Kilns  

Science Journals Connector (OSTI)

(2) Bituminous coals (median value of 0.1 ?g/g) typically contain more mercury than petcoke (0.05 ?g/g median) or tires (0.04 ?g/g median), although the range of fuel mercury content is broad. ... Figure 2. Cumulative distribution of mercury in bituminous coal, petcoke, and tires fired at coal-fired power plants(2) and limestone input to cement kilns. ... The kiln used coal and petcoke as primary fuels, while tires were burned in the precalciner. ...

Constance Senior; Christopher J. Montgomery; Adel Sarofim

2009-12-14T23:59:59.000Z

384

Advanced Utility Mercury-Sorbent Field-Testing Program  

SciTech Connect

This report summarizes the work conducted from September 1, 2003 through December 31, 2007 on the project entitled Advanced Utility Mercury-Sorbent Field-Testing Program. The project covers the testing at the Detroit Edison St. Clair Plant and the Duke Power Cliffside and Buck Stations. The St. Clair Plant used a blend of subbituminous and bituminous coal and controlled the particulate emissions by means of a cold-side ESP. The Duke Power Stations used bituminous coals and controlled their particulate emissions by means of hot-side ESPs. The testing at the Detroit Edison St. Clair Plant demonstrated that mercury sorbents could be used to achieve high mercury removal rates with low injection rates at facilities that burn subbituminous coal. A mercury removal rate of 94% was achieved at an injection rate of 3 lb/MMacf over the thirty day long-term test. Prior to this test, it was believed that the mercury in flue gas of this type would be the most difficult to capture. This is not the case. The testing at the two Duke Power Stations proved that carbon- based mercury sorbents can be used to control the mercury emissions from boilers with hot-side ESPs. It was known that plain PACs did not have any mercury capacity at elevated temperatures but that brominated B-PAC did. The mercury removal rate varies with the operation but it appears that mercury removal rates equal to or greater than 50% are achievable in facilities equipped with hot-side ESPs. As part of the program, both sorbent injection equipment and sorbent production equipment was acquired and operated. This equipment performed very well during this program. In addition, mercury instruments were acquired for this program. These instruments worked well in the flue gas at the St. Clair Plant but not as well in the flue gas at the Duke Power Stations. It is believed that the difference in the amount of oxidized mercury, more at Duke Power, was the difference in instrument performance. Much of the equipment was purchased used and all of the equipment has nearly reached the end of its useful service.

Ronald Landreth

2007-12-31T23:59:59.000Z

385

The Mariner 10 mission to Venus and Mercury  

Science Journals Connector (OSTI)

The Mariner 10 Mission to Venus and Mercury, also known as Mariner Venus Mercury 1973, is the only spacecraft to have flown past the innermost planet. The mission was done for the very low cost of $98M and was extremely successful, although, due to numerous spacecraft anomalies, it was very demanding to operate. Mariner 10 was the first mission to use gravity assist and demonstrated this technique for reaching planetary targets with a minimum of launch energy. Among other science accomplishments, the mission discovered Hadley circulation at Venus and a magnetic field at Mercury.

Donna L. Shirley

2003-01-01T23:59:59.000Z

386

BEHAVIOR OF MERCURY DURING DWPF CHEMICAL PROCESS CELL PROCESSING  

SciTech Connect

The Defense Waste Processing Facility has experienced significant issues with the stripping and recovery of mercury in the Chemical Processing Cell (CPC). The stripping rate has been inconsistent, often resulting in extended processing times to remove mercury to the required endpoint concentration. The recovery of mercury in the Mercury Water Wash Tank has never been high, and has decreased significantly since the Mercury Water Wash Tank was replaced after the seventh batch of Sludge Batch 5. Since this time, essentially no recovery of mercury has been seen. Pertinent literature was reviewed, previous lab-scale data on mercury stripping and recovery was examined, and new lab-scale CPC Sludge Receipt and Adjustment Tank (SRAT) runs were conducted. For previous lab-scale data, many of the runs with sufficient mercury recovery data were examined to determine what factors affect the stripping and recovery of mercury and to improve closure of the mercury material balance. Ten new lab-scale SRAT runs (HG runs) were performed to examine the effects of acid stoichiometry, sludge solids concentration, antifoam concentration, form of mercury added to simulant, presence of a SRAT heel, operation of the SRAT condenser at higher than prototypic temperature, varying noble metals from none to very high concentrations, and higher agitation rate. Data from simulant runs from SB6, SB7a, glycolic/formic, and the HG tests showed that a significant amount of Hg metal was found on the vessel bottom at the end of tests. Material balance closure improved from 12-71% to 48-93% when this segregated Hg was considered. The amount of Hg segregated as elemental Hg on the vessel bottom was 4-77% of the amount added. The highest recovery of mercury in the offgas system generally correlated with the highest retention of Hg in the slurry. Low retention in the slurry (high segregation on the vessel bottom) resulted in low recovery in the offgas system. High agitation rates appear to result in lower retention of mercury in the slurry. Both recovery of mercury in the offgas system and removal (segregation + recovery) from the slurry correlate with slurry consistency. Higher slurry consistency results in better retention of Hg in the slurry (less segregation) and better recovery in the offgas system, but the relationships of recovery and retention with consistency are sludge dependent. Some correlation with slurry yield stress and acid stoichiometry was also found. Better retention of mercury in the slurry results in better recovery in the offgas system because the mercury in the slurry is stripped more easily than the segregated mercury at the bottom of the vessel. Although better retention gives better recovery, the time to reach a particular slurry mercury content (wt%) is longer than if the retention is poorer because the segregation is faster. The segregation of mercury is generally a faster process than stripping. The stripping factor (mass of water evaporated per mass of mercury stripped) of mercury at the start of boiling were found to be less than 1000 compared to the assumed design basis value of 750 (the theoretical factor is 250). However, within two hours, this value increased to at least 2000 lb water per lb Hg. For runs with higher mercury recovery in the offgas system, the stripping factor remained around 2000, but runs with low recovery had stripping factors of 4000 to 40,000. DWPF data shows similar trends with the stripping factor value increasing during boiling. These high values correspond to high segregation and low retention of mercury in the sludge. The stripping factor for a pure Hg metal bead in water was found to be about 10,000 lb/lb. About 10-36% of the total Hg evaporated in a SRAT cycle was refluxed back to the SRAT during formic acid addition and boiling. Mercury is dissolved as a result of nitric acid formation from absorption of NO{sub x}. The actual solubility of dissolved mercury in the acidic condensate is about 100 times higher than the actual concentrations measured. Mercury metal present in the MWWT from previous batch

Zamecnik, J.; Koopman, D.

2012-04-09T23:59:59.000Z

387

Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Page 1 Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks  

E-Print Network (OSTI)

Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Page 1 Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Heidi Borchers University of New Hampshire, Environmental Ultraviolet (UV) lamps generate ultraviolet light through the vaporization of elemental mercury, by using

388

Patterns of mercury and methylmercury bioaccumulation in fish species downstream of a long-term mercury-contaminated site in the lower Ebro River  

E-Print Network (OSTI)

Patterns of mercury and methylmercury bioaccumulation in fish species downstream of a long-term mercury-contaminated site in the lower Ebro River (NE Spain) Luis Carrasco a , Carlos Barata a , Emili Received in revised form 4 May 2011 Accepted 6 May 2011 Available online 12 June 2011 Keywords: Mercury

García-Berthou, Emili

389

Safety Bulletin 2005-08: Safe Management of Mercury (Hg)  

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

SAFETY & HEALTH SAFETY & HEALTH SAFETY & HEALTH BULLETIN Assistant Secretary for Environment, Safety & Health * U.S. Department of Energy * Washington, DC 20585 Safe Management of Mercury (Hg) DOE/EH-0697 Issue No. 2005-08 June 2005 PURPOSE This Bulletin provides information on a safety concern that may impact operations at Department of Energy (DOE) facilities. Specifically, the concern is the safe handling of mercury and mercury compounds. BACKGROUND Mercury is found in small amounts in thermometers, manometers, and barometers and in larger quantities at DOE facilities - ranging from amounts found in scientific equipment to tons in remediation waste at burial sites and hundreds of tons at the DOE stockpile storage facility in Oak Ridge.

390

The mission of the Remediation of Mercury and Industrial  

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

Remediation of Mercury and Industrial Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative is to control the flux of contaminants in soil and water environments for the purpose of protecting surface water, groundwater, and ecological receptors. For more information, contact: Eric Pierce Oak Ridge National Laboratory 1 Bethel Valley Road, MS 6038 Oak Ridge, TN 37831 pierceem@ornl.gov (865) 574-9968 Kurt Gerdes DOE-EM Office of Groundwater and Soil Remediation kurt.gerdes@em.doe.gov (301) 903-7289 Sediment Biota Groundwater Flow Fluctuating Water Table Hg in building structures and rubble Waterborne mercury (mercury being transported via water being released from the facilities to the creeks) Hg currently present in the creek and sediments along the base of the creek

391

DOE-NETLs Mercury R&D Program  

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

U.S. Department of Energy's U.S. Department of Energy's Mercury Control Technology Phase II Field Testing Program Mercury Experts' Conference 2 May 24-25, 2005 Ottawa, Canada Thomas J. Feeley, III thomas.feeley@netl.doe.gov National Energy Technology Laboratory SEC Meeting June 2005 Mercury Control Technology Field Testing Program Performance/Cost Objectives * Have technologies ready for commercial demonstration by 2007 for all coals * Reduce "uncontrolled" Hg emissions by 50-70% * Reduce cost by 25-50% compared to baseline cost estimates Baseline Costs: $50,000 - $70,000 / lb Hg Removed 2000 Year Cost SEC Meeting June 2005 Stages of Mercury Control Technology Development DOE RD&D Model Lab/Bench/Pilot-Scale Testing Field Testing (Slip Stream/Full Scale) 1993 1999-2000 2007-2010 2012-2015

392

DOE-NETLs Mercury R&D Program  

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

DOE's DOE's Phase II Mercury Control Technology Field Testing Program American Coal Council's 2005 Mercury & Multi- Emissions Conference March 22-24, 2005 St. Louis, MO Thomas J. Feeley, III thomas.feeley@netl.doe.gov National Energy Technology Laboratory MEC2_Ottawa_May 25 2005 Power Plant Mercury Control Baghouse or ESP FGD Boiler Stack Cleaning SCR Hg 75 ton/yr Hg in coal Current Emissions 48 ton/yr out stack Hg Hg Hg Hg 27 ton/yr Sorbent Injection Oxidizing Systems Hg Specific Control Co-Benefit Control ACS Monthly Meeting November 4 2004 DOE Mercury Control RD&D Portfolio Polishing Technology * MerCAP(tm) Sorbent Injection * Activated carbon * Amended silicates * Halogenated AC * Ca-based sorbents * Chemically treated sorbents * COHPAC/Toxecon(tm) * Thief sorbents Boiler * Combustion modification

393

NETL: Mercury Emissions Control Technologies - Field Demonstration of  

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

Field Demonstration of Enhanced Sorbent Injection for Mercury Control Field Demonstration of Enhanced Sorbent Injection for Mercury Control ALSTOM will test their proprietary activated carbon-based sorbent which promotes oxidation and capture of mercury via preparation with chemical additives. ALSTOM proposes to test the sorbents at three utilities burning different coals, PacificCorp’s Dave Johnston (PRB), Basin Electric’s Leland Olds (North Dakota Lignite) and Reliant Energy’s Portland Unit (bituminous). Other project partners include Energy and Environmental Research Center, North Dakota Industrial Commission and Minnkota Power who will be a non-host utility participant. Upon completion of this two year project, ALSTOM will demonstrate the capability of controlling mercury emissions from units equipped with electrostatic precipitators, a configuration representing approximately 75% of the existing units.

394

Long-Term Management and Storage of Elemental Mercury | Department...  

Office of Environmental Management (EM)

Mercury Export Ban Act of 2008 (MEBA) (Public Law No. 110-414) requires the Department of Energy (DOE) to establish a facility for the long-term management and storage of elemental...

395

Mercury contamination in a 54-m core from lake Huleh  

Science Journals Connector (OSTI)

... for Hg by optical emission spectroscopy4'5. These results were confirmed by another laboratory using flameless atomic absorption spectroscopy. Mercury concentrations in the Huleh mud ranged from 2.36 to ...

U. M. COWGILL

1975-08-07T23:59:59.000Z

396

DOE awards contract to small business for mercury project at...  

Energy Savers (EERE)

to small business for mercury project at Y-12 February 28, 2014 - 12:00pm Addthis OAK RIDGE, Tenn. - On Feb. 26, the U.S. Department of Energy's (DOE) Oak Ridge Office of...

397

Dissolved Organic Matter Kinetically Controls Mercury Bioavailability to Bacteria  

Science Journals Connector (OSTI)

Predicting the bioavailability of inorganic mercury (Hg) to bacteria that produce the potent bioaccumulative neurotoxin monomethylmercury remains one of the greatest challenges in predicting the environmental fate and transport of Hg. Dissolved organic ...

Sophie A. Chiasson-Gould; Jules M. Blais; Alexandre J. Poulain

2014-02-13T23:59:59.000Z

398

Field Demonstration of Enhanced Sorbent Injection for Mercury Control  

SciTech Connect

Alstom Power Inc. has conducted a DOE/NETL-sponsored program (under DOE Cooperative Agreement No. DE-FC26-04NT42306) to demonstrate Mer-Cure{trademark}, one of Alstom's mercury control technologies for coal-fired boilers. Mer-Cure{trademark} utilizes a small amount of Mer-Clean{trademark} sorbent that is injected into the flue gas stream for oxidation and adsorption of gaseous mercury. Mer-Clean{trademark} sorbents are carbon-based and prepared with chemical additives that promote oxidation and capture of mercury. Mer-Cure{trademark} is unique in that the sorbent is injected into an environment where the mercury capture kinetics is accelerated. This full-scale demonstration program was comprised of three seven-week long test campaigns at three host sites including PacifiCorp's 240-MW{sub e} Dave Johnston Unit No.3 burning a Powder River Basin (PRB) coal, Basin Electric's 220-MW{sub e} Leland Olds Unit No.1 burning a North Dakota lignite, and Reliant Energy's 170-MW{sub e} Portland Unit No.1 burning an Eastern bituminous coal. All three boilers are equipped with electrostatic precipitators. The goals for this Round 2 program, established by DOE/NETL under the original solicitation, were to reduce the uncontrolled mercury emissions by 50 to 70% at a cost 25 to 50% lower than the previous target of $60,000/lb mercury removed. The results for all three host sites indicated that Mer-Cure{trademark} technology could achieve mercury removal of 90%. The estimated mercury removal costs were 25-92% lower than the benchmark of $60,000/lb mercury removed. The estimated costs for control, at sorbent cost of $1.25 to $2.00/lb respectively, are as follows: (1) Dave Johnston Unit No.3--$2,650 to $4,328/lb Hg removed (92.8% less than $60k/lb); (2) Leland Olds Unit No.1--$8,680 to $13,860/lb Hg removed (76.7% less than $60k/lb); and (3) Portland Unit No.1--$28,540 to $45,065/lb Hg removed (24.9% less than $60k/lb). In summary, the results from demonstration testing at all three host sites show that the goals established by DOE/NETL were exceeded during this test program. Mercury removal performance4 of greater than 90% reduction was above the 50-70% reduction goal, and mercury removal cost of 25-92% lower than the benchmark was above the 25 to 50% cost reduction goal.

Shin Kang; Robert Schrecengost

2009-01-07T23:59:59.000Z

399

Atmospheric Deposition of Mercury and Methylmercury to Landscapes and Waterbodies of the Athabasca Oil Sands Region  

Science Journals Connector (OSTI)

Mercury (Hg) is of particular interest as methylmercury (MeHg), a neurotoxin which bioaccumulates through foodwebs, can reach levels in fish and wildlife that may pose health risks to human consumers. ... Relationships between Hg and numerous parameters, including natural environmental factors such as snowpack characteristics and wind, as well as other chemicals, were examined to identify potential factors driving the spatial patterns in Hg deposition to the oil sands region. ... Predominant winds in the Alberta oil sands region are generally from the east, southwest, and northwest (Table S5, Figure S8). ...

Jane L. Kirk; Derek C. G. Muir; Amber Gleason; Xiaowa Wang; Greg Lawson; Richard A. Frank; Igor Lehnherr; Fred Wrona

2014-05-29T23:59:59.000Z

400

Thiacrown polymers for removal of mercury from waste streams  

DOE Patents (OSTI)

Thiacrown polymers immobilized to a polystyrene-divinylbenzene matrix react with Hg.sup.2+ under a variety of conditions to efficiently and selectively remove Hg.sup.2+ ions from acidic aqueous solutions, even in the presence of a variety of other metal ions. The mercury can be recovered and the polymer regenerated. This mercury removal method has utility in the treatment of industrial wastewater, where a selective and cost-effective removal process is required.

Baumann, Theodore F. (Tracy, CA); Reynolds, John G. (San Ramon, CA); Fox, Glenn A. (Livermore, CA)

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercury levels cxs" 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

Dissolved gaseous mercury behavior in shallow water estuaries  

E-Print Network (OSTI)

DISSOLVED GASEOUS MERCURY BEHAVIOR IN SHALLOW WATER ESTUARIES A Thesis by CHARLES MELCHOR LANDIN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2007 Major Subject: Oceanography DISSOLVED GASEOUS MERCURY BEHAVIOR IN SHALLOW WATER ESTUARIES A Thesis by CHARLES MELCHOR LANDIN Submitted to the Office of Graduate Studies of Texas A...

Landin, Charles Melchor

2008-10-10T23:59:59.000Z

402

Electrolytic recovery of mercury enriched in isotopic abundance  

DOE Patents (OSTI)

The present invention is directed to a method of electrolytically extracting liquid mercury from HgO or Hg.sub.2 Cl.sub.2. Additionally there are disclosed two related techniques associated with the present invention, namely (1) a technique for selectively removing product from different regions of a long photochemical reactor (photoreactor) and (2) a method of accurately measuring the total quantity of mercury formed as either HgO or Hg.sub.2 Cl.sub.2.

Grossman, Mark W. (Belmont, MA)

1991-01-01T23:59:59.000Z

403

Mercury Release and Speciation in Chemical Looping Combustion of Coal  

Science Journals Connector (OSTI)

Mercury Release and Speciation in Chemical Looping Combustion of Coal ... In the in situ Gasification Chemical Looping Combustion of coal (iG-CLC), the fuel is gasified in situ in the fuel reactor and gasification products are converted to CO2 and H2O by reaction with the oxygen carrier. ... This work is the first study on mercury release in Chemical Looping Combustion of coal. ...

T. Mendiara; M. T. Izquierdo; A. Abad; P. Gayn; F. Garca-Labiano; L. F. de Diego; J. Adnez

2014-03-06T23:59:59.000Z

404

Mercury Contamination in Pelagic Fishes of the Gulf of Mexico  

E-Print Network (OSTI)

2 Map of sampling locations at the docks and offshore from ` Freeport and Port Aransas, Texas, and Venice, Louisiana, in the NW of Gulf of Mexico. .................................................................... 11 3 Mean Hg concentration...). Figure 1 Mercury cycling and bioaccumulation in aquatic system (Engstrom 2007). Elemental Hg can be oxidized by chemical reactions that depend on ozone, solar energy and water content in the atmosphere. Mercury oxidation is a photochemical 6...

Kuklyte, Ligita

2012-10-19T23:59:59.000Z

405

Release of Ammonium and Mercury from NOx Controlled Fly Ash  

SciTech Connect

One of the goals of the Department of Energy is to increase the reuse of coal utilization byproducts (CUB) to 50% by 2010. This will require both developing new markets and maintaining traditional ones such as the use of fly ash in concrete. However, the addition of pollution control devices can introduce side-effects that affect the marketability of the CUB. Such can be the case when NOx control is achieved using selective catalytic or non-catalytic reduction (SCR or SNCR). Depending on site-specific details, the ammonia slip can cause elevated levels of NH3 in the fly ash. Disposal of ammoniated fly ash can present environmental concerns related to the amount of ammonia that might be released, the amount of water that might become contaminated, and the extent to which metals might be mobilized by the presence of the ammonia. Ammonia retained in fly ash appears to be present as either an ammonium salt or as a chemisorbed species. Mercury in the leachates correlated to neither the amount of leachable ammonium nor to the total amount of Hg in the ash. The strongest correlation was between the decreases in the amount of Hg leached with increased LOI.

Schroeder, K.T.; Cardone, C.R.; Kim, A.G

2007-07-01T23:59:59.000Z

406

NETL: Mercury Emissions Control Technologies - Long-Term Carbon Injection  

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

Long-Term Carbon Injection Field Test for > 90% Long-Term Carbon Injection Field Test for > 90% Mercury Removal for a PRB Unit with a Spray Drier and Fabric Filter The intent of DOE's Phase I and II field tests was to work with industry to evaluate the most promising mercury control technologies at full-scale in a variety of configurations. Although longer-term tests were conducted, the test period was not sufficient to answer many fundamental questions about long-term consistency of mercury removal and reliability of the system when integrated with plant processes. As the technologies move towards commercial implementation, it is critical to accurately define the mercury removal performance and costs so that power companies and policy makers can make informed decisions. Therefore, the overall objective of this Phase III project is to determine the mercury removal performance, long-term emissions variability, and associated O&M costs of activated carbon injection for >90% mercury control over a 10 to 12 month period on a unit that represents the combination of coal and emission control equipment that will be used for many new and existing power plants.

407

Catalyst Additives to Enhance Mercury Oxidation and Capture  

SciTech Connect

Preliminary research has shown that SCR catalysts employed for nitrogen-oxide reduction can effectively oxidize mercury. This report discusses initial results from fundamental investigations into the behavior of mercury species in the presence of SCR catalysts at Southern Research Institute. Three different SCR catalysts are being studied. These are honeycomb-type, plate-type, and a hybrid-type catalyst. The catalysts are manufactured and supplied by Cormetech Inc., Hitachi America Ltd., and Haldor-Topsoe Inc., respectively. Test methods and experimental procedures were developed for current and future testing. The methods and procedures equalize factors influencing mercury adsorption and oxidation (surface area, catalyst activity, and pore structure) that normally differ for each catalyst type. Initial testing was performed to determine the time necessary for each catalyst to reach surface-adsorption equilibrium. In addition, the fraction of Hg oxidized by each of the SCR catalyst types is being investigated, for a given amount of catalyst and flow rate of mercury and flue gas. The next major effort will be to examine the kinetics of mercury oxidation across the SCR catalysts with respect to changes in mercury concentration and with respect to HCl concentration. Hg-sorption equilibrium times will also be investigated with respect to ammonia concentration in the simulated flue gas.

Jared W. Cannon; Thomas K. Gale

2004-12-31T23:59:59.000Z

408

Controlling mercury emissions from coal-fired power plants  

SciTech Connect

Increasingly stringent US federal and state limits on mercury emissions form coal-fired power plants demand optimal mercury control technologies. This article summarises the successful removal of mercury emissions achieved with activated carbon injection and boiler bromide addition, technologies nearing commercial readiness, as well as several novel control concepts currently under development. It also discusses some of the issues standing in the way of confident performance and cost predictions. In testing conducted on western coal-fired units with fabric filters or TOXECON to date, ACI has generally achieved mercury removal rates > 90%. At units with ESPs, similar performance requires brominated ACI. Alternatively, units firing western coals can use boiler bromide addition to increase flue gas mercury oxidation and downstream capture in a wet scrubber, or to enhance mercury removal by ACI. At eastern bituminous fired units with ESPs, ACI is not as effective, largely due to SO{sub 3} resulting from the high sulfur content of the coal or the use of SO{sub 3} flue gas conditioning to improve ESP performance. 7 refs., 3 figs.

Chang, R. [Electric Power Research Institute, Palo Alto, CA (United States)

2009-07-15T23:59:59.000Z

409

Method and apparatus for controlling the flow rate of mercury in a flow system  

DOE Patents (OSTI)

A method for increasing the mercury flow rate to a photochemical mercury enrichment utilizing an entrainment system comprises the steps of passing a carrier gas over a pool of mercury maintained at a first temperature T1, wherein the carrier gas entrains mercury vapor; passing said mercury vapor entrained carrier gas to a second temperature zone T2 having temperature less than T1 to condense said entrained mercury vapor, thereby producing a saturated Hg condition in the carrier gas; and passing said saturated Hg carrier gas to said photochemical enrichment reactor.

Grossman, Mark W. (Belmont, MA); Speer, Richard (Reading, MA)

1991-01-01T23:59:59.000Z

410

Direct Measurement of Mercury Reactions In Coal Power Plant Plumes  

SciTech Connect

Recent field and pilot-scale results indicate that divalent mercury emitted from power plants may rapidly transform to elemental mercury within the power plant plumes. Simulations of mercury chemistry in plumes based on measured rates to date have improved regional model fits to Mercury Deposition Network wet deposition data for particular years, while not degrading model verification fits for remaining years of the ensemble. The years with improved fit are those with simulated deposition in grid cells in the State of Pennsylvania that have matching MDN station data significantly less than the model values. This project seeks to establish a full-scale data basis for whether or not significant reduction or oxidation reactions occur to mercury emitted from coal-fired power plants, and what numerical redox rate should apply for extension to other sources and for modeling of power plant mercury plumes locally, regionally, and nationally. Although in-stack mercury (Hg) speciation measurements are essential to the development of control technologies and to provide data for input into atmospheric fate and transport models, the determination of speciation in a cooling coal combustion plume is more relevant for use in estimating Hg fate and effects through the atmosphere. It is mercury transformations that may occur in the plume that determine the eventual rate and patterns of mercury deposited to the earth's surface. A necessary first step in developing a supportable approach to modeling any such transformations is to directly measure the forms and concentrations of mercury from the stack exit downwind to full dispersion in the atmosphere. As a result, a study was sponsored by EPRI and jointly funded by EPRI, the U.S Department of Energy (DOE), and the Wisconsin Department of Administration. The study was designed to further our understanding of plume chemistry. The study was carried out at the We Energies Pleasant Prairie Power Plant, Pleasant Prairie, Wisconsin, just west of Kenosha. Aircraft and ground measurements support the occurrence of a reduction in the fraction of reactive gaseous mercury (RGM) (with a corresponding increase in elemental mercury) as part of the Total Gaseous Mercury (TGM) emitted from the Pleasant Prairie stack. This occurrence is based on comparison of the RGM concentrations in the plume (at standard conditions) compared to the RGM in the stack. There was found to be a 44% drop in the fraction of RGM between the stack exit and the first sampling arc and a 66% reduction from the stack to the 5-mile sampling arc, with no additional drop between the 5- and 10-mile arcs. Smaller-scale experiments in both test chambers and pilot-scale coal combustor exhaust streams have indicated the presence of rapid and relatively complete reduction reactions converting divalent into elemental mercury within power plant plumes prior to full dispersion in the atmosphere. These measurements, however, have been unable to identify whether the reactions occur during plume rise from physical to virtual stack height (during positive thermal buoyancy). The presence, rate, completeness, ubiquity, and dependence on source characteristics of these reactions, however, must be demonstrated in plume environments associated with fully operational power plants. That requirement, to capture either the reactions or the reaction products of chemistry that may be occurring very close to stack exits in highly turbulent environments, constrains the precision and reproducibility with which such full-scale experiments can be carried out. The work described here is one of several initial steps required to test whether, and in what direction, such rapid mercury redox reactions might be occurring in such plumes.

Leonard Levin

2005-12-31T23:59:59.000Z

411

Methods and sorbents for utilizing a hot-side electrostatic precipitator for removal of mercury from combustion gases  

DOE Patents (OSTI)

Methods are provided for reducing emission of mercury from a gas stream by treating the gas with carbonaceous mercury sorbent particles to reduce the mercury content of the gas; collecting the carbonaceous mercury sorbent particles on collection plates of a hot-side ESP; periodically rapping the collection plates to release a substantial portion of the collected carbonaceous mercury sorbent particles into hoppers; and periodically emptying the hoppers, wherein such rapping and emptying are done at rates such that less than 70% of mercury adsorbed onto the mercury sorbent desorbs from the collected mercury sorbent into the gas stream.

Nelson, Sidney (Hudson, OH)

2011-02-15T23:59:59.000Z

412

Catalyst Additives to Enhance Mercury Oxidation and Capture  

SciTech Connect

Preliminary research has shown that SCR catalysts employed for nitrogen-oxide reduction can effectively oxidize mercury. This report discusses initial results from fundamental investigations into the behavior of mercury species in the presence of SCR catalysts at Southern Research Institute. The testing was performed at Southern Research's Catalyst Test Facility, a bench-scale reactor capable of simulating gas-phase reactions occurring in coal-fired utility pollution-control equipment. Three different SCR catalysts are currently being studied in this project - honeycomb-type, plate-type, and a hybrid-type catalyst. The catalysts were manufactured and supplied by Cormetech Inc., Hitachi America Ltd., and Haldor-Topsoe Inc., respectively. Parametric testing was performed to investigate the contribution of flue-gas chemistry on mercury oxidation via SCR catalysts. Methods and procedures for experimental testing continue to be developed to produce the highest quality mercury-oxidation data. Most experiments so far have focused on testing the catalysts in a simulated Powder River Basin (PRB) flue-gas environment, which contains lower sulfur and chlorine than produced by other coals. Future work to characterize flue gas simulations typically derived from low and high sulfur bituminous coal will be performed in a stepwise manner, to avoid the constant interruptions in testing that occur when leaks in the system are generated during temperature transitions. Specifically, chlorine concentration vs. mercury oxidation graph will be developed for each catalyst. The contributions of temperature and later sulfur will be investigated after this is complete. Also, last quarter's tests showed a potential linear relationship between SO3 conversion and mercury oxidation. As a result, SO3 samples will be taken more frequently to investigate each catalyst's ability to selectively oxidize mercury.

Alex J. Berry; Thomas K. Gale

2005-09-30T23:59:59.000Z

413

Mercury Vapor At Kilauea East Rift Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Mercury Vapor At Kilauea East Rift Area (Thomas, Mercury Vapor At Kilauea East Rift Area (Thomas, 1986) Exploration Activity Details Location Kilauea East Rift Area Exploration Technique Mercury Vapor Activity Date Usefulness not indicated DOE-funding Unknown Notes The sampling network for soil mercury concentrations undertaken by Cox (1981) identified a complicated pattern of mercury concentrations throughout the lower Puna area (Fig. 60). The highest soil mercury concentrations found were generally located within the rift zone, but an analysis of the data showed that soil type and soil pH also had a marked impact on mercury concentration. Making corrections for these effects improved the correspondence between the surface geological expression of the rift zone and the mercury concentrations observed; interpretation of

414

Kids vs. Mercury: Food fight at the creek | Y-12 National Security...  

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

Kids vs. Mercury: Food ... Kids vs. Mercury: Food fight at the creek Posted: May 7, 2014 - 5:26pm | Y-12 Report | Volume 10, Issue 2 | 2014 For years Y-12 has dealt with...

415

Retention of mercury from an industrial source in Swansea Bay sediments  

Science Journals Connector (OSTI)

... Mercury analysis comprised digestion with aqua regia, potassium permanganate and potassium persulphate4, followed by flameless atomic fluorescence spectrophotometry, with a Shandon Southern mercury fluorescence unit5 modified to fit an ...

A. P. CLIFTON; C. M. G. VIVIAN

1975-02-20T23:59:59.000Z

416

Quantifying the health and economic impacts of mercury : an integrated assessment approach  

E-Print Network (OSTI)

Mercury is a toxic pollutant that endangers human and ecosystem health. Especially potent in the form of methyl mercury, exposure is known to lead to adverse neurological effects, and, a growing body of evidence suggests, ...

Giang, Amanda (Amanda Chi Wen)

2013-01-01T23:59:59.000Z

417

E-Print Network 3.0 - arsenic cadmium mercury Sample Search Results  

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

CARR,AND H. MILLER. 1972. Total... mercury. (Lond.)254:238-239. 12;LUNDE, G. 1970. Analysis of arsenic and selenium in marine raw materials... MERCURY AND SELENIUM IN BLUE...

418

Reference Data for the Density and Viscosity of Liquid Cadmium, Cobalt, Gallium, Indium, Mercury, Silicon, Thallium, and Zinc  

SciTech Connect

The available experimental data for the density and viscosity of liquid cadmium, cobalt, gallium, indium, mercury, silicon, thallium, and zinc have been critically examined with the intention of establishing both a density and a viscosity standard. All experimental data have been categorized into primary and secondary data according to the quality of measurement, the technique employed and the presentation of the data, as specified by a series of criteria. The proposed standard reference correlations for the density of liquid cadmium, cobalt, gallium, indium, silicon, thallium, and zinc are characterized by percent deviations at the 95% confidence level of 0.6, 2.1, 0.4, 0.5, 2.2, 0.9, and 0.7, respectively. In the case of mercury, since density reference values already exist, no further work was carried out. The standard reference correlations for the viscosity of liquid cadmium, cobalt, gallium, indium, mercury, silicon, thallium, and zinc are characterized by percent deviations at the 95% confidence level of 9.4, 14.0, 13.5, 2.1, 7.3, 15.7, 5.1, and 9.3, respectively.

Assael, Marc J.; Armyra, Ivi J.; Brillo, Juergen; Stankus, Sergei V.; Wu Jiangtao; Wakeham, William A. [Chemical Engineering Department, Aristotle University, 54124 Thessaloniki (Greece); Institut fuer Materialphysik im Weltraum, Deutsches Zentrum fuer Luft- und Raumfahrt, 51170 Koeln (Germany); Kutateladze Institute of Thermophysics, Siberian Brunch of the Russian Academy of Sciences, Lavrentyev ave. 1, 630090 Novosibirsk (Russian Federation); Center of Thermal and Fluid Science, School of Energy and Power Engineering, Xi'an Jiaotong University, Shaanxi 710049 (China); Chemical Engineering Department, Imperial College, London SW7 2BY (United Kingdom)

2012-09-15T23:59:59.000Z

419

Note: Production of a mercury beam with an electron cyclotron resonance ion source  

SciTech Connect

An electron cyclotron resonance ion source has been utilized to produce mercury beams with intensities of 4.5 e?A of {sup 202}Hg{sup 29+} and 3.0 e?A of {sup 202}Hg{sup 31+} from natural abundance mercury metal. The production technique relies on the evaporation of liquid mercury into the source plasma vacuum region and utilizes elemental mercury instead of a volatile organic compound as the neutral feed material.

Vondrasek, R.; Pardo, R.; Scott, R. [Physics Division, Argonne National Laboratory, Lemont, Illinois 60439 (United States)] [Physics Division, Argonne National Laboratory, Lemont, Illinois 60439 (United States)

2013-11-15T23:59:59.000Z

420

Mercury Reduces Avian Reproductive Success and Imposes Selection: An Experimental Study with Adult-or  

E-Print Network (OSTI)

Mercury Reduces Avian Reproductive Success and Imposes Selection: An Experimental Study with Adult, United States of America Abstract Mercury is a global pollutant that biomagnifies in food webs, placing that songbirds are frequently exposed to mercury pollution. Our objective was to determine the effects

Swaddle, John

Note: This page contains sample records for the topic "mercury levels cxs" 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

Anal. Chem. 1993, 65, 375-379 Analytical Utility of the Iridium-Based Mercury  

E-Print Network (OSTI)

Anal. Chem. 1993, 65, 375-379 Analytical Utility of the Iridium-Based Mercury over several days use. The applicationof SWASV theory for mercury film electrodes is shown The mercury electrode in ita many forms has been the overwhelmingsubstrate-of-choicefor electrochemistrysince

Kounaves, Samuel P.

422

MERCURY CYCLING IN LAKE GORDON AND LAKE PEDDER, TASMANIA (AUSTRALIA). I: IN-LAKE PROCESSES  

E-Print Network (OSTI)

MERCURY CYCLING IN LAKE GORDON AND LAKE PEDDER, TASMANIA (AUSTRALIA). I: IN-LAKE PROCESSES KARL C; accepted 2 December 2002) Abstract. The processes affecting the concentrations of total mercury (total Hg- vestigated. Surface concentrations of total mercury (total Hg) were temporally and spatially uniform in both

Canberra, University of

423

Dietary mercury exposure causes decreased escape takeoff flight performance and increased molt rate in European starlings  

E-Print Network (OSTI)

Dietary mercury exposure causes decreased escape takeoff flight performance and increased molt rate 2014 ? Springer Science+Business Media New York 2014 Abstract Mercury is a widespread and persistent that forage from primarily terrestrial sources have shown evidence of bioaccumula- tion of mercury, but little

Swaddle, John

424

Temperature dependence of the structure of Langmuir films of normal-alkanes on liquid mercury  

E-Print Network (OSTI)

Temperature dependence of the structure of Langmuir films of normal-alkanes on liquid mercury H phase behavior of Langmuir films of n-alkanes CH3(CH2)n 2CH3 , denote Cn on mercury was studied surface normal, alkanes on mercury are always oriented surface parallel and show no long-range in

Ocko, Ben

425

Methylation of Mercury by Bacteria Exposed to Dissolved, Nanoparticulate, and Microparticulate Mercuric Sulfides  

E-Print Network (OSTI)

Methylation of Mercury by Bacteria Exposed to Dissolved, Nanoparticulate, and Microparticulate in the environment is partly controlled by the bioavailability of inorganic divalent mercury (Hg(II)) to anaerobic matter to form chemical species that include organic-coated mercury sulfide nanoparticles as reaction

426

San Francisco Estuary Institute Regional Watershed Program Concentrations and Loads of Mercury,  

E-Print Network (OSTI)

San Francisco Estuary Institute Regional Watershed Program Concentrations and Loads of Mercury #12;McKee, Leatherbarrow, and Oram, 2005 i CONCENTRATIONS AND LOADS OF MERCURY, PCBs, AND OC. Concentrations and loads of mercury, PCBs, and OC pesticides in the lower Guadalupe River, San Jose, California

427

(mercury.yukawa.kyoto-u.ac.jp)ssh Permission denied (publickey).  

E-Print Network (OSTI)

SSH Q&A (mercury.yukawa.kyoto-u.ac.jp)ssh Permission denied (publickey). (1) ID ID ID (2) ssh -i () ssh -i $HOME/.ssh/id_yitp_rsa (UID)@mercury.yukawa.kyoto-u.ac.jp (3) (1)(2) Permission denied support@yukawa.kyoto-u.ac.jp (mercury

Shimizu, Akira

428

Mercury: A Scalable Publish-Subscribe System for Internet Ashwin R. Bharambe  

E-Print Network (OSTI)

Mercury: A Scalable Publish-Subscribe System for Internet Games Ashwin R. Bharambe ashu-subscribe system. We present the design of Mercury, a completely distributed publish-subscribe system, which of communication building block for distributed multiplayer games. Our system, called Mercury, provide

Goldstein, Seth Copen

429

Method for the removal of elemental mercury from a gas stream  

DOE Patents (OSTI)

A method is provided to remove elemental mercury from a gas stream by reacting the gas stream with an oxidizing solution to convert the elemental mercury to soluble mercury compounds. Other constituents are also oxidized. The gas stream is then passed through a wet scrubber to remove the mercuric compounds and oxidized constituents.

Mendelsohn, Marshall H. (Downers Grove, IL); Huang, Hann-Sheng (Darien, IL)

1999-01-01T23:59:59.000Z

430

Changes in mercury bioaccumulation in an apex predator in response to removal of an introduced competitor  

E-Print Network (OSTI)

Changes in mercury bioaccumulation in an apex predator in response to removal of an introduced and decreased mercury concentrations in remaining fish. Instead, we observed a significant increase in lake web structure can influence MeHg concentrations in top predators. Keywords Mercury Á Food web Á Fish

Kraft, Clifford E.

431

Mercury: A Wearable Sensor Network Platform for High-fidelity Motion Analysis  

E-Print Network (OSTI)

Mercury: A Wearable Sensor Network Platform for High-fidelity Motion Analysis Konrad Lorincz, Bor This paper describes Mercury, a wearable, wireless sen- sor platform for motion analysis of patients being to previous systems intended for short-term use in a laboratory, Mercury is designed to sup- port long

Chen, Yiling

432

WDM school, January 14, 2008 Equation of State for Fluid Mercury  

E-Print Network (OSTI)

1 WDM school, January 14, 2008 Equation of State for Fluid Mercury Based on Interatomic Many, Fluid Metals (Princeton, 1999) elements Tc (K) Pc (bar) c (g/cm3) Mercury (Hg) Cesium (Cs) Rubidium (Rb.30 divalent monovalent (alkali) Importance of mercury -- lowest critical temperature -- critical point

433

Mercury: A Memory-Constrained Spatio-temporal Real-time Search on Microblogs  

E-Print Network (OSTI)

Mercury: A Memory-Constrained Spatio-temporal Real-time Search on Microblogs Amr Magdy1§ , Mohamed Mercury; a system for real-time support of top-k spatio-temporal queries on microblogs, where users are able to browse recent microblogs near their locations. With high arrival rates of microblogs, Mercury

Bernstein, Phil

434

386 Anal. Chem. 1987, 59,386-389 Square Wave Anodic Stripping Voltammetry at the Mercury  

E-Print Network (OSTI)

386 Anal. Chem. 1987, 59,386-389 Square Wave Anodic Stripping Voltammetry at the Mercury Film treatment of square wave anodic stripping voltammetry at a mercury film electrode Is presented. Nu- merlcal) frequency ( f ) and amount of metal depostted In the mercury layer (9R) and glves a response 6 tlmes

Kounaves, Samuel P.

435

Mercury in the Northern Crayfish, Orconectes virilis (Hagen), in New England, USA  

E-Print Network (OSTI)

Mercury in the Northern Crayfish, Orconectes virilis (Hagen), in New England, USA CHRIS M. PENNUTO of mercury bioavail- ability in aquatic ecosystems. In this study, we assessed the effects of drainage basin, habitat type, size class, and sex on mercury concentrations in the northern crayfish, Orconectes virilis

Pennuto, Chris

436

Frequently Asked Questions Information on Compact Fluorescent Light Bulbs (CFLs) and Mercury  

E-Print Network (OSTI)

Frequently Asked Questions Information on Compact Fluorescent Light Bulbs (CFLs) and Mercury emissions equivalent to those of more than 800,000 cars. Do CFLs contain mercury? CFLs contain a very small amount of mercury sealed within the glass tubing ­ an average of 5 milligrams ­ about the amount

Jia, Songtao

437

Evaluation of the origin hypotheses of Pantheon Fossae, central Caloris basin, Mercury  

E-Print Network (OSTI)

Evaluation of the origin hypotheses of Pantheon Fossae, central Caloris basin, Mercury Christian April 2010 Keywords: Mercury Tectonics a b s t r a c t The origin of Pantheon Fossae, a complex structure consisting of radial graben in the center of the Caloris basin, Mercury, has been debated since

Nahm, Amanda

438

Atmospheric Mercury in the Great Lakes Region An Evaluation of the Community Multiscale Air Quality  

E-Print Network (OSTI)

Atmospheric Mercury in the Great Lakes Region An Evaluation of the Community Multiscale Air Quality Tracey Holloway #12;i Abstract Atmospheric mercury is a significant source for methylmercury (Me. In order to control MeHg exposures, policy-makers need a clear understanding of the atmospheric mercury

Wisconsin at Madison, University of

439

Multiuser Mercury/waterfilling for Downlink OFDM with Arbitrary Signal Constellations  

E-Print Network (OSTI)

Multiuser Mercury/waterfilling for Downlink OFDM with Arbitrary Signal Constellations Angel Lozano tracked by the base station, adopts the form of a multiuser mercury/waterfilling procedure that generalizes the single-user mercury/waterfilling introduced in [1]. I. INTRODUCTION There is, of late, great

Lozano, Angel

440

MESSENGER and Mariner 10 flyby observations of magnetotail structure and dynamics at Mercury  

E-Print Network (OSTI)

MESSENGER and Mariner 10 flyby observations of magnetotail structure and dynamics at Mercury James January 2012. [1] The first (M1), second (M2), and third (M3) MESSENGER flybys of Mercury traversed the planet's magnetotail from 1.25 to 3.25 RM downstream of the planet, where RM is Mercury's radius (2440 km

California at Berkeley, University of

Note: This page contains sample records for the topic "mercury levels cxs" 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

Effect of a horizontal magnetic field on convective instabilities in mercury  

E-Print Network (OSTI)

L-455 Effect of a horizontal magnetic field on convective instabilities in mercury S. Fauve, C on the three-dimensional instabilities which occur in a Rayleigh-Bénard experiment with mercury is studied which occur in a Rayleigh-Benard experi- ment in mercury, a low Prandtl number fluid. (The Prandtl

Boyer, Edmond

442

Mission Overview MESSENGER is a scientific investigation of the planet Mercury.  

E-Print Network (OSTI)

Mission Overview MESSENGER is a scientific investigation of the planet Mercury. Understanding Mercury,and the forces that have shaped it,is fundamental to understanding the terrestrial planets and their evolution. The MESSENGER (MErcury Surface,Space ENvironment, GEochemistry,and Ranging) mission will orbit

443

Procedures for Collecting and Processing Streambed Sediment and Pore Water for Analysis of Mercury as  

E-Print Network (OSTI)

Procedures for Collecting and Processing Streambed Sediment and Pore Water for Analysis of Mercury Streambed Sediment and Pore Water for Analysis of Mercury as Part of the National Water-Quality Assessment for collecting and processing streambed sediment and pore water for analysis of mercury as part of the National

444

Mercury methylation in oxygen deficient zones of the oceans: No evidence for the predominance of anaerobes  

E-Print Network (OSTI)

Mercury methylation in oxygen deficient zones of the oceans: No evidence for the predominance Keywords: Methylmercury Oxygen minimum zone Arabian Sea Equatorial Eastern Pacific Mercury methylation Although a large fraction of the world's population is exposed to mercury through consumption of marine

Morel, François M. M.

445

Mercury Species and Other Selected Constituent Concentrations in Water, Sediment, and Biota of  

E-Print Network (OSTI)

Mercury Species and Other Selected Constituent Concentrations in Water, Sediment, and Biota Data Series 658 #12;#12;Mercury Species and Other Selected Constituent Concentrations in Water.J., 2012, Mercury species and other selected constituent concentrations in water, sediment, and biota

446

Mercury biogeochemistry: paradigm shifts, outstanding issues and research needs1 Jeroen E. Sonke1  

E-Print Network (OSTI)

Mercury biogeochemistry: paradigm shifts, outstanding issues and research needs1 Jeroen E. Sonke1.dommergue@ujf-grenoble.fr7 In press with Elsevier's Compte Rendus Geoscience8 Abstract9 Half a century of mercury research has provided scientists and policy makers with detailed10 understanding of mercury toxicology

Dintrans, Boris

447

Mercury Dynamics in a San Francisco Estuary Tidal Wetland: Assessing Dynamics Using In Situ Measurements  

E-Print Network (OSTI)

Mercury Dynamics in a San Francisco Estuary Tidal Wetland: Assessing Dynamics Using In Situ the tidally driven exchange of mercury (Hg) between the waters of the San Francisco estuary and Browns Island, respectively--together predicted 94 % of the observed variability in measured total mercury concentra- tion

Boss, Emmanuel S.

448

The Sulfate-Reducing Bacterium Desulfovibrio desulfuricans ND132 as a Model for Understanding Bacterial Mercury  

E-Print Network (OSTI)

Bacterial Mercury Methylation Contact: Cynthia Gilmour (gilmourc@si.edu, 443-482-2498) DOE/Office of Science/Biological & Environmental Research ·The ORNL Mercury Science Focus Area is developing the Hg-methylating bacterium as a model for understanding bacterial mercury methylation. Appl. Environ. Microbiol. 77:3938-3951 (doi:10

449

DESIGN OF THE MERCURY HANDLING SYSTEM FOR A MUON COLLIDER/NEUTRINO FACTORY TARGET  

E-Print Network (OSTI)

DESIGN OF THE MERCURY HANDLING SYSTEM FOR A MUON COLLIDER/NEUTRINO FACTORY TARGET (IPAC13, THPFI092) The baseline target concept for a Muon Collider or Neutrino Factory is a free mercury jet within a 20-T magnetic field being impacted by an 8-GeV proton beam. A pool of mercury serves as a receiving reservoir

McDonald, Kirk

450

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

451

Vapor phase elemental sulfur amendment for sequestering mercury in contaminated soil  

DOE Patents (OSTI)

The process of treating elemental mercury within the soil is provided by introducing into the soil a heated vapor phase of elemental sulfur. As the vapor phase of elemental sulfur cools, sulfur is precipitated within the soil and then reacts with any elemental mercury thereby producing a reaction product that is less hazardous than elemental mercury.

Looney, Brian B.; Denham, Miles E.; Jackson, Dennis G.

2014-07-08T23:59:59.000Z

452

Method for combined removal of mercury and nitrogen oxides from off-gas streams  

DOE Patents (OSTI)

A method for removing elemental Hg and nitric oxide simultaneously from a gas stream is provided whereby the gas stream is reacted with gaseous chlorinated compound to convert the elemental mercury to soluble mercury compounds and the nitric oxide to nitrogen dioxide. The method works to remove either mercury or nitrogen oxide in the absence or presence of each other.

Mendelsohn, Marshall H. (Downers Grove, IL); Livengood, C. David (Lockport, IL)

2006-10-10T23:59:59.000Z

453

Chemical Form and Distribution of Mercury and Selenium in Edible Seafood  

Science Journals Connector (OSTI)

......Distribution of Mercury and Selenium in Edible Seafood Chris J. Cappon J. Crispin Smith * Environmental...distribution of mercury and selenium in edible seafood. | The content, chemical form, and...Distribution of Mercury and Selenium in Edible Seafood Chris J. Cappon and J. Crispin Smith......

Chris J. Cappon; J. Crispin Smith

1982-01-01T23:59:59.000Z

454

Selenium and Mercury in Pelagic Fish in the Central North Pacific Near Hawaii  

E-Print Network (OSTI)

between selenium and mercury and their molar ratios in seafood are essential factors in evaluating risks and mercury in seafood is proposed as a more comprehensive seafood safety criterion. Keywords Mercury. Methylmercury. Selenium . Fish . Seafood . Environmental risk assessment . Seafood safety Introduction

Hawai'i at Manoa, University of

455

Quasi-trapped ion and electron populations at Mercury David Schriver,1,2  

E-Print Network (OSTI)

solar system [Russell et al., 1988]. Mariner 10 data from the 1970s established that Mercury has of a Mercury-like magnetosphere have shown that for relatively low solar wind pressure a quasi particle population around Mercury. Recently, however, global three-dimensional hybrid simulations

California at Berkeley, University of

456

Thief process for the removal of mercury from flue gas  

DOE Patents (OSTI)

A system and method for removing mercury from the flue gas of a coal-fired power plant is described. Mercury removal is by adsorption onto a thermally activated sorbent produced in-situ at the power plant. To obtain the thermally activated sorbent, a lance (thief) is inserted into a location within the combustion zone of the combustion chamber and extracts a mixture of semi-combusted coal and gas. The semi-combusted coal has adsorptive properties suitable for the removal of elemental and oxidized mercury. The mixture of semi-combusted coal and gas is separated into a stream of gas and semi-combusted coal that has been converted to a stream of thermally activated sorbent. The separated stream of gas is recycled to the combustion chamber. The thermally activated sorbent is injected into the duct work of the power plant at a location downstream from the exit port of the combustion chamber. Mercury within the flue gas contacts and adsorbs onto the thermally activated sorbent. The sorbent-mercury combination is removed from the plant by a particulate collection system.

Pennline, Henry W. (Bethel Park, PA); Granite, Evan J. (Wexford, PA); Freeman, Mark C. (South Park Township, PA); Hargis, Richard A. (Canonsburg, PA); O'Dowd, William J. (Charleroi, PA)

2003-02-18T23:59:59.000Z

457

Xenon in Mercury-Manganese Stars  

E-Print Network (OSTI)

Previous studies of elemental abundances in Mercury-Manganese (HgMn) stars have occasionally reported the presence of lines of the ionized rare noble gas Xe II, especially in a few of the hottest stars with Teff ~ 13000--15000 K. A new study of this element has been undertaken using observations from Lick Observatory's Hamilton Echelle Spectrograph. In this work, the spectrum synthesis program UCLSYN has been used to undertake abundance analysis assuming LTE. We find that in the Smith & Dworetsky sample of HgMn stars, Xe is vastly over-abundant in 21 of 22 HgMn stars studied, by factors of 3.1--4.8 dex. There does not appear to be a significant correlation of Xe abundance with Teff. A comparison sample of normal late B stars shows no sign of Xe II lines that could be detected, consistent with the expected weakness of lines at normal abundance. The main reason for the previous lack of widespread detection in HgMn stars is probably due to the strongest lines being at longer wavelengths than the photographic blue. The lines used in this work were 4603.03A, 4844.33A and 5292.22A.

M. M. Dworetsky; J. L. Persaud; K. Patel

2008-01-16T23:59:59.000Z

458

Molecular Mechanisms of Bacterial Mercury Transformation  

SciTech Connect

Mercury (Hg) is a major global pollutant arising from both natural and anthropogenic sources. Defining the factors that determine the relative affinities of different ligands for the mercuric ion, Hg2+, is critical to understanding its speciation, transformation, and bioaccumulation in the environment. Here, we used quantum chemistry to dissect the relative binding free energies for a series of inorganic anion complexes of Hg2+. The results show that, whereas in the gas phase the binding affinity of two identical anionic ligands (forming HgL2) increases with ligand (L) hardness, in contrast, in the aqueous phase the affinity increases with ligand softness. This switch in affinity upon hydration is shown to result mostly from interactions with only a small number (e.g. one or two) of water molecules. The results yield a clear, robust periodic trend within the chalcogenide and halide groups and are in agreement with the well-known experimentally observed preference of Hg2+ for soft ligands. By comparing the Hg2+ binding of one with two anions, the gas phase preferences are found to arise from the enhancement of reactivity of the cationic complex (HgL+) with the hardness of L. The approach establishes a theoretical basis for understanding Hg speciation in the biosphere.

smith, jeremy

2014-04-15T23:59:59.000Z

459

Mercury study report to Congress. Volume 4. An assessment of exposure to mercury in the United States  

SciTech Connect

This volume assesses exposure of the U.S. general population to methylmercury through consumption of fish and shellfish. Analyses of patterns of fish consumption by humans were based on contemporary food consumption surveys of nationally representative populations in the United States, and for subpopulations identified as consumers of substaintially higher amounts of fish/shellfish than are more typical consumers. These subpopulations include: Native American Tribal groups, Alaskan natives, persons of Asian/Caribbean/South Pacific Island ethnicity, and subsistence fishers. Mercury concentrations in marine/fresh water/estuarine species are described. Commerical data on quantities of seafood available and sources of fish/shellfish consumed are provided based on commercial and National Marine Fisheries Service data bases. Mercury exposures are calculated for multiple groups, but particularly for women of childbearing age, and for children. Alternative presentations of patterns of fish/shellfish consumption (e.g., daily, per capita, consumers only, and month-long patterns) for the general population are provided. Assessment of mercury exposures based on biomonitoring of mercury in hair and blood among North American groups are provided. A brief summary of additional sources of mercury (e.g., occupational exposures) is included. Sources of variability and uncertainty are described, and when possible, quantitated.

Mahaffey, K.R.; Rice, G.E.

1997-12-01T23:59:59.000Z

460

MERCURY EMISSIONS FROM COAL FIRED POWER PLANTS LOCAL IMPACTS ON HUMAN HEALTH RISK.  

SciTech Connect

A thorough quantitative understanding of the processes of mercury emissions, deposition, and translocation through the food chain is currently not available. Complex atmospheric chemistry and dispersion models are required to predict concentration and deposition contributions, and aquatic process models are required to predict effects on fish. However, there are uncertainties in all of these predictions. Therefore, the most reliable method of understanding impacts of coal-fired power plants on Hg deposition is from empirical data. A review of the literature on mercury deposition around sources including coal-fired power plants found studies covering local mercury concentrations in soil, vegetation, and animals (fish and cows). There is strong evidence of enhanced local deposition within 3 km of the chlor-alkali plants, with elevated soil concentrations and estimated deposition rates of 10 times background. For coal-fired power plants, the data show that atmospheric deposition of Hg may be slightly enhanced. On the scale of a few km, modeling suggests that wet deposition may be increased by a factor of two or three over background. The measured data suggest lower increases of 15% or less. The effects of coal-fired plants seem to be less than 10% of total deposition on a national scale, based on emissions and global modeling. The following summarizes our findings from published reports on the impacts of local deposition. In terms of excesses over background the following increments have been observed within a few km of the plant: (1) local soil concentration Hg increments of 30%-60%, (2) sediment increments of 18-30%, (3) wet deposition increments of 11-12%, and (4) fish Hg increments of about 5-6%, based on an empirical finding that fish concentrations are proportional to the square root of deposition. Important uncertainties include possible reductions of RGM to Hg{sub 0} in power plant plumes and the role of water chemistry in the relationship between Hg deposition and fish content. Soil and vegetation sampling programs were performed around two mid-size coal fired power plants. The objectives were to determine if local mercury hot-spots exist, to determine if they could be attributed to deposition of coal-fired power plant emissions, and to determine if they correlated with model predictions. These programs found the following: (1) At both sites, there was no correlation between modeled mercury deposition and either soil concentrations or vegetation concentrations. At the Kincaid plant, there was excess soil Hg along heavily traveled roads. The spatial pattern of soil mercury concentrations did not match the pattern of vegetation Hg concentrations at either plant. (2) At both sites, the subsurface (5-10 cm) samples the Hg concentration correlated strongly with the surface samples (0-5 cm). Average subsurface sample concentrations were slightly less than the surface samples; however, the difference was not statistically significant. (3) An unequivocal definition of background Hg was not possible at either site. Using various assumed background soil mercury concentrations, the percentage of mercury deposited within 10 km of the plant ranged between 1.4 and 8.5% of the RGM emissions. Based on computer modeling, Hg deposition was primarily RGM with much lower deposition from elemental mercury. Estimates of the percentage of total Hg deposition ranged between 0.3 and 1.7%. These small percentages of deposition are consistent with the empirical findings of only minor perturbations in environmental levels, as opposed to ''hot spots'', near the plants. The major objective of this study was to determine if there was evidence for ''hot-spots'' of mercury deposition around coal-fired power plants. Although the term has been used extensively, it has never been defined. From a public health perspective, such a ''hot spot'' must be large enough to insure that it did not occur by chance, and it must affect water bodies large enough to support a population of subsistence fishers. The results of this study support the hypothesis that n

SULLIVAN, T.M.; BOWERMAN, B.; ADAMS, J.; LIPFERT, F.; MORRIS, S.M.; BANDO, A.; PENA, R.; BLAKE, R.

2005-12-01T23:59:59.000Z

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461

Mercury Vapor At Mokapu Penninsula Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Mokapu Penninsula Area (Thomas, 1986) Mokapu Penninsula Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Mokapu Penninsula Area (Thomas, 1986) Exploration Activity Details Location Mokapu Penninsula Area Exploration Technique Mercury Vapor Activity Date Usefulness not useful DOE-funding Unknown Notes The high degree of cultural activity (e.g. residential areas, streets, jet runways, etc.) on Mokapu both limited the extent of the soil geochemical surveys performed and rendered their interpretation much more difficult. Soil mercury concentrations and radon emanometry data on the peninsula showed a few localized high values (Figs 13, 14), but no consistent correlation between the anomalous zones and geologic features could be

462

NETL: News Release - President's Initiative to Seek 90 Percent Mercury  

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

April 21, 2004 April 21, 2004 President's Initiative to Seek 90 Percent Mercury Removal We Energies to Test TOXECON(tm) Process in Michigan Coal-fired Power Plant WASHINGTON, DC - The Department of Energy (DOE) and We Energies today initiated a joint venture to demonstrate technology that will remove an unprecedented 90 percent of mercury emissions from coal-based power plants. Presque Isle Power Plant - We Energies' Presque Isle Power Plant located on the shores of Lake Superior in the Upper Peninsula of Michigan. As part of the President's Clean Coal Power Initiative of technology development and demonstration, the new project supports current proposals to reduce mercury emissions in the range of 70 percent through a proposed regulation pending before the Environmental Protection Agency or, in the

463

NETL: News Release - We Energies Begins Operational Phase of Mercury  

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

7, 2006 7, 2006 We Energies Begins Operational Phase of Mercury Control Test in Michigan Coal-Fired Power Plant TOXECON(tm) Process Could Achieve 90 Percent Mercury Removal Washington, DC - The nation's first full-scale test of the patented TOXECON(tm) pollution control process began operations at the We Energies Presque Isle Power Plant located in Marquette, MI. The $52.9 million TOXECON(tm) project was selected by the U.S. Department of Energy in 2003 as part of the President's Clean Coal Power Initiative. Under their agreement with DOE, We Energies is designing, installing, operating and evaluating the TOXECON(tm) process as an integrated system to control emissions of mercury, particulate matter, sulfur dioxide and nitrogen oxides during the operations of its Presque Isle plant.

464

Catalyst Additives to Enhance Mercury Oxidation and Capture  

SciTech Connect

Preliminary research has shown that SCR catalysts employed for nitrogen-oxide reduction can effectively oxidize mercury. Three different SCR catalysts are currently being studied in this project--honeycomb-type, plate-type, and a hybrid-type catalyst. The catalysts were manufactured and supplied by Cormetech Inc., Hitachi America Ltd., and Haldor-Topsoe Inc., respectively. Parametric testing was performed to investigate the contribution of flue-gas chemistry on mercury oxidation via SCR catalysts. Future work to characterize flue gas simulations typically derived from low and high sulfur bituminous coal are being performed in a stepwise manner, to avoid the constant interruptions in testing that occur when leaks in the system are generated during temperature transitions. Specifically, chlorine concentration vs. mercury oxidation correlations will be developed for each catalyst. The contributions of temperature are also being investigated. SO2 oxidation is also being investigated for each test condition.

Thomas K. Gale

2005-12-31T23:59:59.000Z

465

DIRECT MEASUREMENT OF MERCURY REACTIONS IN COAL POWER PLANT PLUMES  

SciTech Connect

This project was awarded under U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) Program Solicitation DE-PS26-02NT41422 and specifically addresses Program Area of Interest: No.5--Environmental and Water Resources. The project team includes the Electric Power Research Institute (EPRI) as the contractor and the University of North Dakota Energy & Environmental Research Center (EERC) and Frontier Geosciences as subcontractors. Wisconsin Energies and its Pleasant Prairie Power Plant acted as host for the field-testing portion of the research. The project is aimed at clarifying the role, rates, and end results of chemical transformations that may occur to mercury that has been emitted from elevated stacks of coal-fired electric power plants. Mercury emitted from power plants emerges in either its elemental, divalent, or particulate-bound form. Deposition of the divalent form is more likely to occur closer to the source than that of the other two forms, due to its solubility in water. Thus, if chemical transformations occur in the stack emissions plume, measurements in the stack may mischaracterize the fate of the material. Initial field and pilot plant measurements have shown significant and rapid chemical reduction of divalent to elemental mercury may occur in these plumes. Mercury models currently assume that the chemical form of mercury occurring in stacks is the same as that which enters the free atmosphere, with no alteration occurring in the emissions plume. Recent data indicate otherwise, but need to be evaluated at full operating scale under field conditions. Prestbo and others have demonstrated the likelihood of significant mercury chemical reactions occurring in power plant plumes (Prestbo et al., 1999; MDNR-PPRP, 2000; EERC, 2001). This experiment will thus increase our understanding of mercury atmospheric chemistry, allowing informed decisions regarding source attribution. The experiment was carried out during the period August 22-September 5, 2003. The experimental site was the Pleasant Prairie Power Plant in Pleasant Prairie, Wisconsin, just west of Kenosha. The experiment involved using an aircraft to capture emissions and document chemistry changes in the plume. While using the airplane for sampling, supplemental fast-response sensors for NOx, connected to data loggers, were used to gauge entry and exit times and transect intervals through plume emissions material. The Frontier Geosciences Static Plume Dilution Chambe