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3 edition of Microbial activity associated with uranium mill tailings found in the catalog.

Microbial activity associated with uranium mill tailings

Keka Choudhury

Microbial activity associated with uranium mill tailings

by Keka Choudhury

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Published by University of New Mexico in Albuquerque, NM .
Written in English


Edition Notes

Statementby Keka Choudhury
The Physical Object
FormatElectronic resource
Paginationxiv, 117 l.
Number of Pages117
ID Numbers
Open LibraryOL22252258M

@article{osti_, title = {Remedial Action Plan and site design for stabilization of the inactive uranium mill tailings site at Rifle, Colorado. Volume 1, Text: Appendices A, B, and C: Final report}, author = {}, abstractNote = {This document has been structured to provide a comprehensive understanding of the remedial action proposed for the Rifle sites.   This research was part of the Uranium Mill Tailings model the dynamics of microbial growth and activity during in situ A. et al. Evidence of Geobacter-associated phage in a Cited by:

A Review of Fugitive Dust Control for Uranium Mill Tailings Manuscript Completed: June Date Published: January Prepared by C. T. Li, M. R. Elmore, J. N. Hartley Pacific Northwest Laboratory Richland, WA Prepared for Division of Health, Siting and Waste Management Office of Nuclear Regulatory Research.   Mill tailings are the fine-grained, sandy waste byproduct material that remains after the milling process has extracted and concentrated the uranium from the ore. Mill tailings are typically created in slurry form during processing, and are then deposited in an impoundment or "mill tailings pile," which must be carefully regulated, monitored.

In sedimentary uranium deposits, U(IV)-bearing minerals are frequently associated with iron sulfide minerals within the range of sulfur isotopic compositions (δ S), indicating that sulfide is produced by microbial sulfate reduction. Based on this finding, it has been suggested that U(VI) reduction mediated by aqueous hydrogen sulfide and Cited by: This Colorado economic impact study summarizes employment and economic benefits to the state from activities associated with the Uranium Mill Tailings Remedial Action (UMTRA) Project during Colorado state fiscal year (FY) (1 July through 30 June ). To capture employment information, a questionnaire was distributed to subcontractor employees at the active UMTRA Project sites of.


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Microbial activity associated with uranium mill tailings by Keka Choudhury Download PDF EPUB FB2

Uranium mill tailings (UMT) are the crushed ore residues from the extraction of uranium (U) from ores. Among the radioactive wastes associated with the nuclear fuel cycle, UMT are unique in terms of their volume and their limited isolation Microbial activity associated with uranium mill tailings book the surficial environment.

For this latter reason, their management and long-term fate has many interfaces with environmental microbial communities and Cited by: Uranium mill tailings (UMT) are the crushed ore residues from the extraction of uranium (U) from ores.

Among the radioactive wastes associated with the nuclear fuel cycle, UMT are unique in terms of their volume and their limited isolation from the surficial by:   Elias DA, Krumholz LR, Wong D, Long PE, Suflita JM () Characterization of microbial activities and U reduction in a shallow aquifer contaminated by uranium mill tailings.

Microb Ecol –91 PubMed CrossRef Google ScholarAuthor: Paltu Kumar Dhal. Microbial Fe (III) reduction takes place under anaerobic conditions. Thus, both management practices and natural forces, including erosion and redeposition, that place uranium mill tailings in anaerobic environments create the poten- tial for Ra leaching as a result of microbial Fe (IIl) by:   Numbers and types of microorganisms in uranium mill tailings were determined using culturing bacter were found to be the predominant microorganism inhabiting the sandy tailings, whereasBacillus and fungi predominated in the slime tailings.

Sulfate-reducing bacteria, capable of leaching radium, were isolated in low numbers from tailings samples but were isolated in Cited by: Bacteroides was found to be present in uranium mill tailings in Germany (Radeva and Selenska-Pobell, ).

Therefore, these bacteria were presumed to be capable of uranium removal. Therefore, these bacteria were presumed to be capable of uranium : Taotao Zeng, Guanhai Mo, Qing Hu, Guohua Wang, Wei Liao, Shuibo Xie. Uranium mill tailings are also often associated with elevated concentrations of highly toxic heavy metals, which are a major source of surface and groundwater : Abdesselam Abdelouas.

Presently, the uranium ore from four underground mines located within a distance of 22 km is processed by the Uranium Corporation of India Ltd. (UCIL). A few more mines are envisaged to meet the nuclear fuel requirements. Management of mine water, mill tailings and the effluents from the tailings containment facility is given due by: 2.

Some workers have studied uranium mill tailings, comprising uneconomic residues from mining and milling operations, as high-volume, low specific activity radioactive model environments.

This work has been reviewed recently [ 4 ], focusing on aspects such as the mineral hosts for key radionuclides and the microbial and diagenetic processes that can alter radionuclide by: Flow-cell studies demonstrated microbial communities in the tailings surface water could develop biofilms and maintain cell activity at both pH 10 and 7, and altering the pH between these 2 values had little effect on biofilm by: Heavy metal retention and microbial activities in geochemical barriers formed in glacial sediments subjacent to a former uranium mining leaching heap.

Geochemistry69, DOI: /Cited by: This in situ evidence for the microbial-driven release of Ra is consistent with laboratory studies which have demonstrated that the release of Ra associated with both U mill tailings (Landa et al., ) and (Ba, Ra)SO 4 treatment sludges (Fedorak et al., ) is greatly enhanced in the presence of SO 4-reducing by: AimsTo describe microbial diversity, biofilm composition and biogeochemical potential within biofilms in the water overlying uranium tailings characterized by high pH, high metal concentration and.

Uranium mill tailings (UMT) are a high volume, low specific activity radioactive waste typically disposed in surface impoundments. This review focuses on research on UMT and related earth Author: Edward R Landa. According to a recent study, nearly 5 × 10 9 tons of mill tailings are generated per year globally (Lu and Wang, ).

The high Cu concentration in the tailings drainage may pose risks to human. accurately predict natural attenuation, it is important to first understand the microbial diversity of such sites. In this paper, the distribution of sulfate-reducing bacteria (SRB) in contaminated groundwater associated with a uranium mill tailings disposal site at Shiprock,was investigated.

Two culture-independent analyses. The Interim Storage Facility (ISF) is a temporary holding area for uranium mill tailings. The facility is owned by the City of Grand Junction and operated in coordination with the Colorado Department of Public Health and Environment.

The facility is located at West Avenue, Grand Junction, Size: KB. Uranium Mill Tailings Uranium Mill Tailings Remediation in the United States Research into the adverse health effects associated with uranium mill tailings have been studied as far back as in a joint report by US Public Health Service and the Colorado Department of Health that indicated an increase of pulmonary fibrosis among uranium.

Microbial transformations of uranium in wastes and implication on its mobility Arokiasamy J. Francis Environmental Sciences Department, Brookhaven National Laboratory, Upton, New York USA Abstract.

Uranium exists in several chemical forms in mining and mill tailings and in nuclear and weapons production wastes. Under appropriate conditions.

Mining and milling of uranium ores has been undertaken in many places around the world, resulting in large volumes of mining/milling residues with low activity concentrations of long lived nuclides that often have been disposed of in a haphazard fashion. This report summarizes the current state of.

Microbially mediated reduction and immobilization of U(VI) to U(IV) plays a role in both natural attenuation and accelerated bioremediation of uranium-contaminated sites.

To realize bioremediation potential and accurately predict natural attenuation, it is important to first understand the microbial diversity of such sites. In this paper, the distribution of sulfate-reducing bacteria (SRB) in Cited by: Department of Public Health & Environment Uranium mill tailings management plan For managing Title I uranium mill tailings encountered during construction activities in western Colorado.

Uranium tailings are the radioactive, sand-like materials left over from uranium milling. Uranium tailings are placed in mounds called tailings piles, which are located close to uranium mills.

Demand for uranium has declined due to a lack of demand for new nuclear power plants and increased uranium imports from other countries.