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  • Microbial Leaching of Uranium Ore IntechOpen

    2018-9-25 · Microbial Leaching of Uranium Ore Hadi Hamidian Islamic Azad University, Qaemshahr Branch Iran 1. Introduction This chapter is a review of the microbiological leaching of uranium ores. Microbiological leaching has been use as an alternative approach to conventional hydrometallurgical methods of uranium's extraction.

    Microbial Leaching of Uranium Ore ResearchGate

    The percolation leaching of a uranium ore in the presence of micro-organisms was carried out in semi-pilot experiments at different scales. microbial activity. The uranium-leaching efficiency

    Microbiological leaching of uranium ores Home

    1999-11-1 · Microbiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium extraction. In the microbiological leaching process, iron-oxidizing bacteria oxidize pyritic phases to ferric iron and sulfuric acid, and uranium is solubilized from the ore due to sulfuric acid attack. If uranium in the ore material is in the reduced, tetravalent form (UIV

    REVIEW Microbial Leaching of Uranium Ore

    Vol. 21, No. 8 (2009) Microbial Leaching of Uranium Ore 5809. Harrison et al.9 reported the role of the iron oxidizing Acidithiobacillus ferrooxidans in leaching of uranium. The uranium ore was stacked in heaps, similar to dump leaching of low-grade copper ore and leached using an acidic ferric sulfate

    Microbial Leaching of Uranium Ore IntechOpen

    2011-9-9 · Microbial Leaching of Uranium Ore, Nuclear Power Deployment, Operation and Sustainability, Pavel Tsvetkov, IntechOpen, DOI: 10.5772/17941. Available from:

    Microbial Leaching of Uranium Ore CORE

    Microbial Leaching of Uranium Ore . By Hadi Hamidian. Get PDF (406 KB) Cite . BibTex; Full citation; Topics: Nuclear Power Deployment, Operation and Sustainability . Publisher: 'IntechOpen' Year:

    Microbial leaching Online Biology Notes

    2020-8-27 · Uranium leaching: Although less uranium than copper is obtained by microbial leaching, the uranium process is more significant economically. Because a thousand tons of uranium ore must be handled to obtain one ton of uranium, in-situ microbial leaching is gaining greater acceptance, since it eliminates the expense of moving such vast amounts of

    Bacterial leaching of uranium ore from Figueira—PR,

    1993-7-1 · A bacterial leaching program was carried out in order to evaluate the potential of applying this process to leach uranium from the ore of Figueira-PR, Brazil. The experiments were carried out in shake flasks, column percolation (laboratory and scmipilot scale)and in heap leaching.

    Microbial leaching of uranium and other trace

    2004-10-1 · Microbial leaching of uranium and other trace elements from shale mine tailings at Ranstad. despite the fact that the tailings are covered up and no longer are under the direct influence of weathering. Microbial mobilization of elements may occur at conditions other than those needed for chemical (nonleached uranium ore)

    (PDF) Microbial Extraction of Uranium from Ores

    65 Microbial Extract ion of Uranium from Ore s Parsonsite Pb 2 UO 2 (PO 4 ) 2 ⋅ 2H 2 O 26.1 Zaire Shoep (1923) Pitchblende UO 2 88.1 Many world wide Ring (1980), Agate

    Microbial Leaching of Uranium Ore CORE

    Microbial Leaching of Uranium Ore . By Hadi Hamidian. Get PDF (406 KB) Cite . BibTex; Full citation; Topics: Nuclear Power Deployment, Operation and Sustainability . Publisher: 'IntechOpen' Year:

    Microbial Leaching of Uranium from Low Grade Ore and

    Microbial Leaching of Uranium from Low Grade Ore and Waste Sample of Northern Part of Gabal Gatter, Egypt Using Penicillium Purpurogenium and Pseudomonas Fluorescens SHA 281 1Shimaa S. Hussien*, Osman A. Desouky1 Said E. Mohamadeyand 1 1Nuclear Materials Authority, P.O. Box 530 El-Maadi, Cairo, Egypt. *Corresponding Author: Shimaa S. Hussien

    Microbial Leaching of Uranium from Low Grade Ore

    2016-8-25 · Uranium (U) is one of the strategic elements and essential for many applications as a fuel in nuclear power plants and nuclear weapons. Microbiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium's recovery from low grade ores and waste samples Penicillium purpurogenium and Pseudomonas fluorescens SHA 281 were exhibited a

    Microbial leaching of uranium and other trace

    2004-10-1 · Microbial leaching of uranium and other trace elements from shale mine tailings at Ranstad. despite the fact that the tailings are covered up and no longer are under the direct influence of weathering. Microbial mobilization of elements may occur at conditions other than those needed for chemical (nonleached uranium ore)

    Bacterial leaching of uranium ore from Figueira—PR,

    1993-7-1 · A bacterial leaching program was carried out in order to evaluate the potential of applying this process to leach uranium from the ore of Figueira-PR, Brazil. The experiments were carried out in shake flasks, column percolation (laboratory and scmipilot scale)and in heap leaching.

    Bacterial leaching of waste uranium materials.

    Uranium leaching is increased up to 20% while sulphuric acid consumption is simultaneously decreased by the addition of pyrite. Uranium concentrations in starting waste materials used for leaching were extremely low (0.0278 and 0.372% U) but about 60% recovery of uranium was obtained, with relatively low consumption of sulphuric acid. PMID: 788361

    (PDF) Mineral Processing and Extractive Metallurgy

    About 49% uranium recovery was reported in 30 days from Turamdih uranium ore (0.024% U 3 O 8 ) using 10% PD, at 30 C and 2.0 pH in shake flask experiments (Pal et al. 2010). Bhatti et al. (1998) reported about 93% uranium leaching by chemical lixiviants (acid) using brannerite at 28 C and 1.5 pH with shaking at 180 rpm.

    BIOLEACHING OF URANIUM PDF epsscentral.info

    2020-8-28 · Microbial leaching of uranium and other trace elements from shale mine tailings at Ranstad. A study of the bioleaching of a Spanish uranium ore. There was a problem providing the content you requested. A review of the bacterial leaching in the treatment of uranium ores. A study of the bioleaching of spanish uranium ore.

    Bioleaching: Introduction, Methods, Application,

    2021-5-11 · In situ microbial leaching is greater acceptance since it eliminates the expense of moving vast amounts of material. For instance thousand tons of uranium ore must be handled in other than bioleaching processes, to obtain one ton of uranium. This is an indirect leaching process since the microbial attack is not on uranium ore directly but on

    A comparison of uranium recovery from low-grade

    HAMIDIAN H., 2011, Microbial Leaching of Uranium Ore, Nuclear Power-Deployment, Operation and Sustainability, ISBN: 978-953-307-474-0, InTech. HUNTER E., 2013, On the leaching behavior of uranium bearing resources in carbonate bicarbonate solution by gaseous oxidants, Faculty and the Board of Trustees of the Colorado School of Mines, USA

    Microbial Leaching of Uranium from Low Grade Ore

    2016-8-25 · Uranium (U) is one of the strategic elements and essential for many applications as a fuel in nuclear power plants and nuclear weapons. Microbiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium's recovery from low grade ores and waste samples Penicillium purpurogenium and Pseudomonas fluorescens SHA 281 were exhibited a

    Microbial Leaching of Uranium from Low Grade Ore and

    Microbial Leaching of Uranium from Low Grade Ore and Waste Sample of Northern Part of Gabal Gatter, Egypt Using Penicillium Purpurogenium and Pseudomonas Fluorescens SHA 281 1Shimaa S. Hussien*, Osman A. Desouky1 Said E. Mohamadeyand 1 1Nuclear Materials Authority, P.O. Box 530 El-Maadi, Cairo, Egypt. *Corresponding Author: Shimaa S. Hussien

    Microbial leaching of uranium and other trace

    P. fluorescens grown with ore caused a change in pH in the growth medium from 4.7 to 9.3, which was significantly higher than for the other two species, for which pH was about 5.2. P. fluorescens was the only species that thrived and mobilized measurable amounts of U from the two ores, leaching out 0.001 0.005% of the total amount of U from both.

    (PDF) Mineral Processing and Extractive Metallurgy

    About 49% uranium recovery was reported in 30 days from Turamdih uranium ore (0.024% U 3 O 8 ) using 10% PD, at 30 C and 2.0 pH in shake flask experiments (Pal et al. 2010). Bhatti et al. (1998) reported about 93% uranium leaching by chemical lixiviants (acid) using brannerite at 28 C and 1.5 pH with shaking at 180 rpm.

    微生物浸铀研究进展|文旭祥,孙占学,周义朋,徐玲玲,刘顺亮

    The indirect action of microbial on uranium ore is clear, but the view of direct action of microorganism on uranium ore is still controversial. The mechanism of uranium leaching by microorganism, the study of tolerance, the breeding of bacteria and practical application research of microbial leaching uranium technology were reviewed, especially in the past 20 years.

    Bioleaching: Introduction, Methods, Application,

    2021-5-11 · In situ microbial leaching is greater acceptance since it eliminates the expense of moving vast amounts of material. For instance thousand tons of uranium ore must be handled in other than bioleaching processes, to obtain one ton of uranium. This is an indirect leaching process since the microbial attack is not on uranium ore directly but on

    Bacterial leaching of ores and other materials

    2018-2-27 · The technical set-up of uranium ore leaching may be the dump method, but sometimes a variation of this, so-called heap or basin leaching is applied. The ore is set up in basins. The mode of operation is preferably a two stage leaching: the out-flowing liquor, in which the iron is largely in the ferrous form, is treated in an oxidation pond.

    A comparison of uranium recovery from low-grade

    HAMIDIAN H., 2011, Microbial Leaching of Uranium Ore, Nuclear Power-Deployment, Operation and Sustainability, ISBN: 978-953-307-474-0, InTech. HUNTER E., 2013, On the leaching behavior of uranium bearing resources in carbonate bicarbonate solution by gaseous oxidants, Faculty and the Board of Trustees of the Colorado School of Mines, USA

    Microbes and mineral recovery: Bioleaching of copper,

    2020-4-22 · The leaching of sulfide minerals distinguishes bioleaching from conventional acid leaching. Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid. Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium.

    Leaching SlideShare

    2015-12-29 · Microbial leaching used for recovering metal from copper and uranium ores. 3. Thiobacilli: Gram-negative; non-spore forming rods. 0.5 µm thick and 1.3 µm long Chemolithoautotrophic, aerobic. Energy from elementary sulfur, reduced sulfur compounds and CO2. End product of oxidation: sulfate. Acid pH (2.0 3.0) Species : Tiobacillus

    Microbial Leaching of Uranium from Low Grade Ore

    2016-8-25 · Uranium (U) is one of the strategic elements and essential for many applications as a fuel in nuclear power plants and nuclear weapons. Microbiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium's recovery from low grade ores and waste samples Penicillium purpurogenium and Pseudomonas fluorescens SHA 281 were exhibited a

    Microbial leaching of uranium and other trace

    P. fluorescens grown with ore caused a change in pH in the growth medium from 4.7 to 9.3, which was significantly higher than for the other two species, for which pH was about 5.2. P. fluorescens was the only species that thrived and mobilized measurable amounts of U from the two ores, leaching out 0.001 0.005% of the total amount of U from both.

    Microbes affect the speciation of various uranium

    2015-5-15 · biogeochemistry of uranium recovery from ores and bacterial leaching has been extensively studied. The role of autotrophic bacteria . Thiobacillus ferrooxidans . in the extraction of uranium from ore is primarily indirect action due to generation of the oxidizing agent ferric sulfate (indirect oxidation by Fe. 2+ / Fe. 3+ cycle as the

    微生物浸铀研究进展|文旭祥,孙占学,周义朋,徐玲玲,刘顺亮

    The indirect action of microbial on uranium ore is clear, but the view of direct action of microorganism on uranium ore is still controversial. The mechanism of uranium leaching by microorganism, the study of tolerance, the breeding of bacteria and practical application research of microbial leaching uranium technology were reviewed, especially in the past 20 years.

    Effect ofMicroorganisms In Situ Uranium Mining

    The extraction of some metal values, e.g., uranium or copper, may be accomplished by using solutions to remove metals from ore bodies without practicing conventional mining. Thisprocessis referred to as in situ leaching and has been used industrially to recover uranium. Thegrowth ofmicrobial popula-tions during in situ leaching is believed to

    Bacterial leaching of ores and other materials

    2018-2-27 · The technical set-up of uranium ore leaching may be the dump method, but sometimes a variation of this, so-called heap or basin leaching is applied. The ore is set up in basins. The mode of operation is preferably a two stage leaching: the out-flowing liquor, in which the iron is largely in the ferrous form, is treated in an oxidation pond.

    Bioleaching: Introduction, Methods, Application,

    2021-5-11 · In situ microbial leaching is greater acceptance since it eliminates the expense of moving vast amounts of material. For instance thousand tons of uranium ore must be handled in other than bioleaching processes, to obtain one ton of uranium. This is an indirect leaching process since the microbial attack is not on uranium ore directly but on

    Ore Leaching by Bacteria, Annual Review of

    1980-10-1 · Ore Leaching by Bacteria Ore Leaching by Bacteria Lundgren, D G; Silver, M 1980-10-01 00:00:00 The elements iron and sulfur circulate in the biosphere through specific paths from environment to organisms and back to the environment. Certain paths only involve microorganisms and it is here that biological reactions of relevance in leaching of metals from mineral ores occur (28).

    Microbes and mineral recovery: Bioleaching of copper,

    2020-4-22 · The leaching of sulfide minerals distinguishes bioleaching from conventional acid leaching. Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid. Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium.

    A comparison of uranium recovery from low-grade

    HAMIDIAN H., 2011, Microbial Leaching of Uranium Ore, Nuclear Power-Deployment, Operation and Sustainability, ISBN: 978-953-307-474-0, InTech. HUNTER E., 2013, On the leaching behavior of uranium bearing resources in carbonate bicarbonate solution by gaseous oxidants, Faculty and the Board of Trustees of the Colorado School of Mines, USA