Bioleaching of uranium from low grade black schists by Acidithiobacillus ferrooxidans

Choi, Moon-Sung; Cho, Kyung-Suk; Kim, Dong–Su; Ryu, Hee Wook

doi:10.1007/s11274-004-3627-9

Cited by 35 publications

(14 citation statements)

References 13 publications

(24 reference statements)

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“…Therefore, if there is ample reason to believe that significant amounts of siderophores or other strong ligands were present during the deposition of a studied rock, the use of proxies such as U and Ce might be severely hampered. This may have widespread implications for the (bio-) remediation of U-contaminated sites near nuclear waste repositories, for example, or for microbial bioleaching of low-grade U ore deposits (Choi et al, 2005;Qiu et al, 2011) . Extensive research has been conducted on the long-term U removal from contaminated soils and waters by fixing aqueous U(VI) to insoluble U(IV) minerals via bacterial activity (see Newsome et al, 2014 and references therein).…”

Section: Impact Of Siderophores On Geochemical Applications Using Ce mentioning

confidence: 99%

Oxidative mobilization of cerium and uranium and enhanced release of “immobile” high field strength elements from igneous rocks in the presence of the biogenic siderophore desferrioxamine B

Kraemer

Kopf

Bau

2015

Geochimica et Cosmochimica Acta

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Section: Impact Of Siderophores On Geochemical Applications Using Ce mentioning

confidence: 99%

Oxidative mobilization of cerium and uranium and enhanced release of “immobile” high field strength elements from igneous rocks in the presence of the biogenic siderophore desferrioxamine B

Kraemer

Kopf

Bau

2015

Geochimica et Cosmochimica Acta

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“…Bioleaching with autotrophic acidophiles presupposes that the target material will supply the required iron(II) and reduced inorganic sulfur species to support microbial growth [266,267] or that these substrates can be added economically [268][269][270]. Many metalliferous black shales and schists contain discrete pyrite grains within the organic matrix, thus meeting that particular requirement [87,266,267,271,272] (Figure 6).…”

Section: Microbiological Aspectsmentioning

confidence: 99%

“…For example, native fungal strains supplied with sucrose mobilised up to 71% U in 10 days [283], compared with 80% extraction using At. ferrooxidans supplied with ferrous ions [268]. However, based on their own results, Anjum et al [269,285,288,289] concluded that fungi may be a better choice when the polymetallic ore (concentrate or tailings) has high organic-carbon content.…”

Section: Microbiological Aspectsmentioning

confidence: 99%

Review of Biohydrometallurgical Metals Extraction from Polymetallic Mineral Resources

Watling

2014

Minerals

138

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This review has as its underlying premise the need to become proficient in delivering a suite of element or metal products from polymetallic ores to avoid the predicted exhaustion of key metals in demand in technological societies. Many technologies, proven or still to be developed, will assist in meeting the demands of the next generation for trace and rare metals, potentially including the broader application of biohydrometallurgy for the extraction of multiple metals from low-grade and complex ores. Developed biotechnologies that could be applied are briefly reviewed and some of the difficulties to be overcome highlighted. Examples of the bioleaching of polymetallic mineral resources using different combinations of those technologies are described for polymetallic sulfide concentrates, low-grade sulfide and oxidised ores. Three areas for further research are: (i) the development of sophisticated continuous vat bioreactors with additional controls; (ii) in situ and in stope bioleaching and the need to solve problems associated with microbial activity in that scenario; and (iii) the exploitation of sulfur-oxidising microorganisms that, under specific anaerobic leaching conditions, reduce and solubilise refractory iron(III) or manganese(IV) compounds containing multiple elements. Finally, with the successful applications of stirred tank bioleaching to a polymetallic tailings dump and heap bioleaching to a polymetallic black schist ore, there is no reason why those proven technologies should not be more widely applied.

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“…The concentrations of Fe were 2 and 4 g/l using FeSO 4 ⋅7H 2 O. Each experiment was accomplished twice under same standard conditions at 30-40 °C, 180 rpm shaking speed and pH 2.0 [23]. A known amount of sample was drawn at 6 days interval for analysis of Iron.…”

Section: Bioleaching Experimentsmentioning

confidence: 99%

Prediction of ferric iron precipitation in bioleaching process using partial least squares and artificial neural network

Golmohammadi

Rashidi

Safdari

2013

CI&CEQ

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A quantitative structure-property relationship (QSPR) study based on partial least squares (PLS) and artificial neural network (ANN) was developed for the prediction of ferric iron precipitation in bioleaching process. The leaching temperature, initial pH, oxidation/reduction potential (ORP), ferrous concentration and particle size of ore were used as inputs to the network. The output of the model was ferric iron precipitation. The optimal condition of the neural network was obtained by adjusting various parameters by trial-and-error. After optimization and training of the network according to back-propagation algorithm, a 5-5-1 neural network was generated for prediction of ferric iron precipitation. The root mean square error for the neural network calculated ferric iron precipitation for training, prediction and validation set are 32.860, 40.739 and 35.890, respectively, which are smaller than those obtained by PLS model (180.972, 165.047 and 149.950, respectively). Results obtained reveal the reliability and good predictivity of neural network model for the prediction of ferric iron precipitation in bioleaching process

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Bioleaching of uranium from low grade black schists by Acidithiobacillus ferrooxidans

Cited by 35 publications

References 13 publications

Oxidative mobilization of cerium and uranium and enhanced release of “immobile” high field strength elements from igneous rocks in the presence of the biogenic siderophore desferrioxamine B

Oxidative mobilization of cerium and uranium and enhanced release of “immobile” high field strength elements from igneous rocks in the presence of the biogenic siderophore desferrioxamine B

Review of Biohydrometallurgical Metals Extraction from Polymetallic Mineral Resources

Prediction of ferric iron precipitation in bioleaching process using partial least squares and artificial neural network

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