PRODUCTS

microbial leaching of uranium ore

microbial leaching of uranium ore

microbial leaching of uranium ore
Application

Microbial Leaching of Uranium Ore cdntechopen Microbial Leaching of Uranium Ore Hadi Hamidian Islamic Azad University, Qaemshahr Branch Iran 1 Introduction Thi

microbial leaching of uranium ore

  • Microbial Leaching of Uranium Ore cdntechopen

    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 extractionThe percolation leaching of a uranium ore in the presence of microorganisms was carried out in semipilot experiments at different scales microbial activity The uraniumleaching efficiencyMicrobial Leaching of Uranium Ore ResearchGateMicrobiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium extraction In the microbiological leaching process, ironoxidizing 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 (UIVMicrobiological leaching of uranium ores | SpringerLink

  • REVIEW Microbial Leaching of Uranium Ore

    Vol 21, No 8 (2009) Microbial Leaching of Uranium Ore 5809 Harrison et al9 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 lowgrade copper ore and leached using an acidic ferric sulfateMicrobial Leaching of Uranium Ore, Nuclear Power Deployment, Operation and Sustainability, Pavel Tsvetkov, IntechOpen, DOI: 105772/17941 Available from:Microbial Leaching of Uranium Ore | IntechOpenMicrobial 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)Microbial leaching of uranium and other trace elements

  • Microbial Leaching of Uranium Ore CORE Reader

    Microbial Leaching of Uranium Ore CORE ReaderPDF | Uranium (U) is one of the strategic elements and essential for many applications as a fuel in nuclear power plants and nuclear weapons| Find, read and cite all the research you need on(PDF) Microbial Leaching of Uranium from Low Grade OreA bacterial leaching program was carried out in order to evaluate the potential of applying this process to leach uranium from the ore of FigueiraPR, Brazil The experiments were carried out in shake flasks, column percolation (laboratory and scmipilot scale)and in heap leachingBacterial leaching of uranium ore from Figueira—PR, Brazil

  • Microbial leaching Online Biology Notes

    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, insitu microbial leaching is gaining greater acceptance, since it eliminates the expense of moving such vast amounts of materialMicrobial Leaching of Uranium Ore, Nuclear Power Deployment, Operation and Sustainability, Pavel Tsvetkov, IntechOpen, DOI: 105772/17941 Available from: Over 21,000 IntechOpen readers like this topicMicrobial Leaching of Uranium Ore | IntechOpenMicrobial 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 Uranium (U) is one of the strategic elements and essential for many applications as a fuel in nuclear power plants and nuclear weaponsmicrobial leaching of uranium ore IValor

  • Bacterial Leaching of a Carbonate Bearing Uranium Ore

    But discovering a new ore body does not mean that mining will be feasible because several factors may influence the metal winning process, eg low amount of total ore, low concentration of valuable metal, large dissemination of ore[en] The condition for bacterial leaching (Acidithiobacillus spp) in uranium ores is the presence of metallic sulphides such as associated pyrite (FeS 2), which occurs in the ore and waste rock piles of the Uranium Ore Treatment Unit (UTM), Minas Gerais State, BrazilIn the UTM area, water sampling was conducted at three points in the UTM interface environment, at two other points in theBacterial Leaching in Uranium Mine Effluents at the OreUranium 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 (00278 and 0372% U) but about 60% recovery of uranium was obtained, with relatively low consumption of sulphuric acidBacterial leaching of waste uranium materials

  • BIOLEACHING OF URANIUM PDF PDF Central

    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 oreBioreactor leaching using enriched culture of Acidithiobacillus ferrooxidans and Leptosprillium ferrooxidans was investigated for the apatite rich Indian (Narwapahar) uranium ore Bioreactor leaching of Narwapahar ore of <45 μm size at pH 20 and 10% (w/v) PD using 10% (v/v) inoculum of the bacteMicrobial processing of apatite rich low grade IndianA summary of recent studies indicates that uranium ore is mainly treated by stacking, heap leaching, stope, and in situ biological leaching Because uranium deposits contain rare earth elements, future bioleaching applications are likely to focusProgress, Challenges, and Perspectives of Bioleaching for

  • Microbes and mineral recovery: Bioleaching of copper,

    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 uraniumMicrobial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms For the last 10 centuries, microorganisms have assisted in the recovery of copper dissolved in drainage from water Thus biomining has emerge as an important branch of biotechnology in recent years Microbial technology renders helps inMicrobial Leaching (Bioleaching, BiominingP fluorescens grown with ore caused a change in pH in the growth medium from 47 to 93, which was significantly higher than for the other two species, for which pH was about 52 P fluorescens was the only species that thrived and mobilized measurable amounts of U from the two ores, leaching out 0001 0005% of the total amount of U from bothMicrobial leaching of uranium and other trace elements

  • Microbial Extraction of Uranium from Ores [email protected]

    CONTENTS 31 Introduction 32 Uranium Leaching Methodologies 321 Chemical Leaching 322 Bioleaching 33 Modes and Mechanism of Uranium Bioleaching 331 Direct Mechanism 332 Indirect Mechanism 333 Bioleaching by Heterotrophs 34 Factors Influencing Bioleaching 341 Mineralogy of the Ore 342 Microorganisms 343 Temperature 344 pH 345 Nutrients and Energy Source 346Microbial 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 oreBIOLEACHING OF URANIUM PDF PDF CentralBioleaching of uranium was carried out with Turamdih ore sample procured from Uranium Corporation of India Limited, Jaduguda The bacterial strain that was used in the leaching experiments was isolated from the Jaduguda mine water sampleBioleaching of lowgrade uranium ore using

  • Bioleaching of low grade uranium ore containing pyrite

    or dump leaching, the direct microbial leaching of the uranium ores is not significant, as a consequence of the large quantities of ferric iron generated from pyrite That is to say, the bacterial leaching of uranium ores is two steps process: the bacterial leaching of pyrite and the leaching of uranium ore with the resulting metabolicThe technical setup of uranium ore leaching may be the dump method, but sometimes a variation of this, socalled heap or basin leaching is applied The ore is set up in basins The mode of operation is preferably a two stage leaching: the outflowingBacterial leaching of ores and other materialsAuthors: Tesic, Z P; Marjanovic, D I Publication Date: Fri Jan 01 00:00:00 EST 1971 Research Org: Microbiology Inst, Belgrade OSTI Identifier: NSA Number:BACTERIAL LEACHING URANIUM IN YUGOSLAVIA (Journal

  • A study of the bioleaching of a Spanish uranium ore Part

    A study of the bioleaching of a Spanish uranium ore Part I: A review of the bacterial leaching in the treatment of uranium ores JA Mufioz, F GonzBlez, ML Blizquez, A Ballester Departamento de Ciencia de 10s Materiales e Ingenieria Metaltirgica, Facultad de Ciencias Quimicas, Universidad Complutense, 28040 Madrid, SpainOlli H Tuovinen, 1986: Acid leaching of uranium ore materials with microbial catalysis, Biotechnology and Bioengineering Symposium, 16, 6572 SA Waksman, J S Joffe, 1922: Microorganisms concerned with the oxidation of sulphur in soil II Acidithiobacillus thiooxidans, a new sulphur oxidising organism isolated from the soil J Bacteriol, 7(2)239256Review on bioleaching of uranium from lowgrade ore 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 uraniumMicrobes and mineral recovery: Bioleaching of copper,