microrobial mining of uranium

microrobial mining of uranium

Microbial Diversity in Uranium Mining-Impacted Soils as ...

2009-11-4  Microbial diversity was characterized in mining-impacted soils collected from two abandoned uranium mine sites, the Edgemont and the North Cave Hills, South Dakota, using a high-density 16S microarray (PhyloChip) and clone libraries. Characterization of the elemental compositions of soils by X-ray fluorescence spectroscopy revealed higher metal contamination

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Microbial diversity in uranium mining-impacted soils as ...

Microbial diversity was characterized in mining-impacted soils collected from two abandoned uranium mine sites, the Edgemont and the North Cave Hills, South Dakota, using a high-density 16S microarray (PhyloChip) and clone libraries. Characterization of the elemental compositions of soils by X-ray f

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Bioreduction of Uranium Using Microbial Biomass

2016-8-3  The most practical method financial is often the microbial treatment to remove uranium from waters, and here I will describe the basis in which that happens. [1] In Germany, there has been a lot of uranium mining and milling between 1952 and 1989 that produced around 231,000 tons of uranium.

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Microbial communities in uranium mine tailings and mine ...

Microbial diversity within uranium mine tailings and mine water sediment from the Jaduguda uranium mine, India was characterized by metagenome-derived 16S rRNA gene clone libraries. Samples from fresh tailings (JFT244), abandoned (vegetated) tailings (JOT245) and mine water sediment (J1-5) having wide ranges of pH (5.7 to 10.4), nitrogen ...

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REVIEW Microbial Leaching of Uranium Ore

lurgy. Microbial leaching is the extraction of metals from their ores using microorganisms. Microbial technology offers an economic alter-native to the mining industry. This paper intends to render a general overview of the microbial leaching research activities all over the world. Key Words: Uranium, Microbial, Leaching, Nuclear, Pyrometal-

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Microbial leaching of uranium and other trace elements ...

2004-10-1  Growth was accompanied by an increase in pH. It was observed that the higher the cell density, the more extensive the change in pH Table 1, Table 2, Table 3.In cultures with P. fluorescens grown with leached ore, a change in pH from 4.5 to 9.3 (ΔpH=4.8) was observed over a period of 8 days, whereas S. putrefaciens and P. stutzeri caused pH levels of 5.1 and 5.2 in

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Microbial Leaching of Uranium Ore - cdntechopen

2018-9-25  (1995), dedicated researcher in uranium s microbial leaching in Spain, has presented his research s results in many published papers in Elsevier. Bioleaching process, mineralogy of uranium ore, bearing rock type, level of toxic material, and leaching variables are among the factors which have been probed by him.

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Metals other than uranium affected microbial community ...

2015-7-1  To understand the links between the long-term impact of uranium and other metals on microbial community composition, ground- and surface water-influenced soils varying greatly in uranium and metal concentrations were investigated at the former uranium-mining district in Ronneburg, Germany. A soil-based 16S PhyloChip approach revealed 2358 bacterial and 35

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Microbial Mining

Microbial Mining. Home. This website is dedicated to the use of microbes in the mining of metals such as Iron, Copper and Uranium. In short, the main use of microbes in mining is in microbial leaching. This is the process whereby a microbe will reduce or oxidise an insoluble metal into a soluble form, which can then be extracted and used by us.

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The removal of uranium from mining waste water using

2005-1-1  3. Stage 1: uranium sequestration3.1.. AdsorptionThe observation that algae and aquatic macrophytes have a strong affinity for U (Scheminzky, 1959, Justyn and Stanek, 1974) led to the recognition that they could provide a means of removing U from waste water.Heide et al. (1973) suggested that unicellular green algae in continuous culture could remove 95% of

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Microbial diversity in uranium mining-impacted soils as ...

Microbial diversity was characterized in mining-impacted soils collected from two abandoned uranium mine sites, the Edgemont and the North Cave Hills, South Dakota, using a high-density 16S microarray (PhyloChip) and clone libraries. Characterization of the elemental compositions of soils by X-ray f

Read More
Microbial Diversity in Uranium Mining-Impacted Soils as ...

uranium, but the highest grade ore contained even up to 276,000 mg/kg of uranium [31]. Active mining started in 1954 under the General Mining Laws and Public Law 357, which required no form of restoration after mining. Extensive mining occurred in the early 1960s; however, all mining in the area ceased shortly thereafter in 1964. Sample ...

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Bioreduction of Uranium Using Microbial Biomass

2016-8-3  The most practical method financial is often the microbial treatment to remove uranium from waters, and here I will describe the basis in which that happens. [1] In Germany, there has been a lot of uranium mining and milling between 1952 and 1989 that produced around 231,000 tons of uranium.

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(PDF) Microbial Extraction of Uranium from Ores

87 Microbial Extrac tion of Uranium from O res. is limited to th at of 20 %, as with any further i ncrease the liquor becomes. too thick for ef cient gas tran sfer and the shear force induced by ...

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Microbial communities in low permeability, high pH

Aims: To describe the diversity and metabolic potential of microbial communities in uranium mine tailings characterized by high pH, high metal concentration and low permeability. Methods and results: To assess microbial diversity and their potential to influence the geochemistry of uranium mine tailings using aerobic and anaerobic culture-based methods, in conjunction with next

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Microbial Mining

Microbial Mining. Home. This website is dedicated to the use of microbes in the mining of metals such as Iron, Copper and Uranium. In short, the main use of microbes in mining is in microbial leaching. This is the process whereby a microbe will reduce or oxidise an insoluble metal into a soluble form, which can then be extracted and used by us.

Read More
The microbial community composition and population

Uranium tailings produced in the process of uranium mining and metallurgy are an important source of uranium pollution, and pose a serious threat to the ecosystem and human health. In this study, Bacillus sp. as a functional bacterial when the uranium tailings were remediation in situ at 30°C and pH 6.5, aim to explore the response of the indigenous microbial community to

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Toxicity of Uranium to Microbial Communities in

Microbial processes have shown promise for the remediation of uranium and nitrate in groundwater impacted by uranium mine tailings. This study investigated the inhibitory impact of

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Effects of uranium concentration on microbial community ...

At uranium concentrations of ≥ 1500 mg U kg −1, genes associated with methanogenic consortia and processes increased in relative abundance, while numerous significant changes were also seen in the relative abundances of genes involved in nitrogen cycling. Such alterations in carbon and nitrogen cycling pathways suggest that taxonomic and ...

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Microbial Mining Issues Magazine

2021-10-1  Microbial Mining. By Carla Zammit. Microbes can operate in the toughest conditions on Earth, including among the acids and heavy metals of the mining industry. The first microorganisms appeared on Earth 3.7 billion years ago at a time when there was no free oxygen and the atmosphere was composed of methane, carbon dioxide, ammonia and hydrogen.

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Bioreduction of Uranium Using Microbial Biomass

2016-8-3  The most practical method financial is often the microbial treatment to remove uranium from waters, and here I will describe the basis in which that happens. [1] In Germany, there has been a lot of uranium mining and milling between 1952 and 1989 that produced around 231,000 tons of uranium.

Read More
Microbial Diversity in Uranium Mining-Impacted Soils as ...

uranium, but the highest grade ore contained even up to 276,000 mg/kg of uranium [31]. Active mining started in 1954 under the General Mining Laws and Public Law 357, which required no form of restoration after mining. Extensive mining occurred in the early 1960s; however, all mining in the area ceased shortly thereafter in 1964. Sample ...

Read More
REVIEW Microbial Leaching of Uranium Ore

lurgy. Microbial leaching is the extraction of metals from their ores using microorganisms. Microbial technology offers an economic alter-native to the mining industry. This paper intends to render a general overview of the microbial leaching research activities all over the world. Key Words: Uranium, Microbial, Leaching, Nuclear, Pyrometal-

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MICROBIAL DIVERSITY IN A URANIUM CONTAMINATED

2015-2-11  The Urgeiriça mine is currently deactivated, but it was the most important uranium exploration in Portugal. As a consequence of mine activities large amounts of waste was produced (13 Mton) which were deposited in several tailings (Pereira et al., 2004).

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Effects of uranium concentration on microbial community ...

Located in the Northern Territory of Australia, Ranger uranium mine is directly adjacent to the UNESCO World Heritage listed Kakadu National Park, with rehabilitation targets needed to ensure the site can be incorporated into the park following the mine's closure in 2026.

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Metals other than uranium affected microbial community ...

2018-5-1  pact of uranium and other metals on microbial community composition,ground-andsurfacewater-influencedsoilsvary-ing greatly in uranium and metal concentrations were investi-gated at the former uranium-mining district in Ronneburg, Germany. A soil-based 16S PhyloChip approach revealed 2358 bacterial and 35 archaeal operational taxonomic units

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Microbial mobilization of uranium from shale mine waste

Microbial processes influence metal speciation, while the chemical environment shapes and controls microbial populations. This thesis has two parts and the papers cover various aspects of metal-to-microbe links in a former uranium mine at Ranstad, Sweden.

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The removal of uranium from mining waste water using

2006-11-24  The removal of uranium from mining waste water using algal/microbial biomass Margarete Kalina, W.N. Wheelerb, G. Meinrathc,) aBoojum Research, 450 E. Queen St., Suite 101, Toronto, ON M5A 1T7, Canada bW.N. Wheeler Associates, 23142 Arroyo Vista, Rancho Santa Margarita, CA 92680, USA cRER Consultants, Schießstattweg 3a, D-94032 Passau, Germany Received 1

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Microbial Mining Issues Magazine

2021-10-1  Microbial Mining. By Carla Zammit. Microbes can operate in the toughest conditions on Earth, including among the acids and heavy metals of the mining industry. The first microorganisms appeared on Earth 3.7 billion years ago at a time when there was no free oxygen and the atmosphere was composed of methane, carbon dioxide, ammonia and hydrogen.

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陈保冬_百度百科

2021-1-30  Effects of arbuscular mycorrhizal inoculation on uranium and arsenic accumulation by Chinese brake fern (Pteris vittata L.) from a uranium mining-impacted soil. Chemosphere 62: 1464-1473. 12) Zhang Xuhong, Lin Aijun, Chen Baodong,

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