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Received July 12, 2007
Accepted September 17, 2007
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Bio-dissolution of copper from Khetri lagoon material by adapted strain of Acidithiobacillus ferrooxidans
Mousumi Mishra
Sradhanjali Singh
Trupti Das
Rabi Narayana Kar
Karanam Srinivasa Rao
Lala Bihari Sukla†
Barada Kanta Mishra
Institute of Minerals and Material Technology (CSIR), Bhubaneswar-13, Orissa, India
Korean Journal of Chemical Engineering, May 2008, 25(3), 531-534(4), 10.1007/s11814-008-0089-z
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Abstract
Bioleaching involves the use of iron and sulfur oxidizing microorganisms to catalyze the dissolution of valuable metals. In this investigation, lagoon material contains 0.39% Cu, in which the major copper bearing mineral is chalcopyrite associated with other minerals present as minor phase. Leaching experiments were carried out using an adapted strain of Acidithiobacillus ferrooxidans with various parameters such as presence/absence of iron, pH, pulp density and temperature. Base of the medium was 9 K (without ferrous) Bio-dissolution of copper was found to be maximum, i.e., 80.9% with 9 K+ (with ferrous) at pH-2.0, 10% pulp-density and 35 oC within an incubation period of 30 days.
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Chandraprabha MN, Modak JM, Natarajan KA, Raichur AM, Miner. Eng., 15, 751 (2002)
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Deveci H, Akcil A, Alp I, Materials Science and Technology 2003 Symposium: Process Control and Optimization in Ferrous and Non Ferrous Industry, Chicago, USA, 9-12 November (2003)
Carranza F, Iglesias N, Romero R, Palencia I, Fems Microbiol. Rev., 11, 129 (1993)
Gomez C, Blazquez MC, Ballester A, Miner. Eng., 12, 93 (1999)
Tipre DR, PhD thesis, Gujarat University, Ahmedabad, India (1999)
Rawlings DE, Dew D, du Plessis C, Trends Biotechnol., 21, 38 (2003)
Ingledew WJ, Biochem. Biophys. Acta, 683, 89 (1982)
Drobner E, Huber H, Stetter KO, Appl. Environ. Microbiol., 56, 2922 (1990)
Silverman MP, Lundgren DG, J. Bacteriol., 77, 642 (1959)
Sukla LB, Pradhan D, Pal S, Das T, Kar RN, Roy Chaudhry G, Proceedings of National Seminar on Low Grade Minerals-Challenges & opportunities, India. pp. 1-8 (2005)
Akcil A, Ciftci H, Deveci H, Miner. Eng., 20, 310 (2007)
Rao KS, Et AL, Korean J. Chem. Eng., (in press)
