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Received April 23, 2012
Accepted October 2, 2012
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Microbial desulfurization of three different coals from Indonesia, China and Korea in varying growth medium
1Mineral Resource Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Gwahang-ro 92, Yuseong-gu, Daejeon 305-350, Korea 2SRM Research Institute, SRM University, Kattankulathur - 603 203, Kancheepuram District, Chennai, Tamil Nadu, India 3Faculty of Minerals and Energy, School of Chemical and Mathematical Sciences, Murdoch University, 90 South Street, Murdoch, 6150, Western Australia
gahancsbiometal@gmail.com
Korean Journal of Chemical Engineering, March 2013, 30(3), 680-687(8), 10.1007/s11814-012-0168-z
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Abstract
Shake flask studies on microbial desulfurization of three different coal samples (Indonesian lignite, Chinese lignite and Korean anthracite) were performed to optimize the best suitable growth medium. Among the three different growth mediums (basal salt medium, basal salt medium supplemented with 9 g/L Fe and basal salt medium supplemented with 2.5% S0) tested, the basal salt medium was found to be the best, considering process dynamics and economical_x000D_
factors. The extent of pyrite oxidation was highest with 95% in the experiments with Korean anthracite in basal salt medium supplemented with 9 g/L Fe, while the lowest pyrite oxidation of 70-71% was observed in the experiments with Indonesian and Chinese Lignite’s in only basal salt medium. The microbial sulfur removal in the experiments with basal salt medium supplemented with 9 g/L Fe for all the three coal samples was between 94-97%, while the experiments on basal salt medium supplemented with 2.5% S0 for all the coal samples were relatively much lower ranging between 27-48%. However, the overall study resulted with promising directions for further scaling up of microbial desulphurization in a best growth medium devoid of iron and sulfur supplement.
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Acharya C, Kar RN, Sukla LB, Fuel., 80, 2207 (2001)
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Rossi G, Fuel., 72, 1581 (1993)
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Fabianska MJ, Lewinska-Preis L, Galimska-Stypa R, Fuel, 82(2), 165 (2003)
Jorjani E, Chelgani SC, Mesroghli S, Miner. Eng., 20, 1285 (2007)
Peeples TL, Kelly RM, Fuel., 72, 1619 (1993)
Tripathy SS, Kar RN, Mishra SK, Twardowska I, Sukla LB, Fuel, 77(8), 859 (1998)
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Hazeu W, Batenburg-van der Vegte WH, Bos P, van der Pas RK, Kuenen JG, Arch. Microbiol., 150, 574 (1988)
Fortuny M, Guisasola A, Casas C, Gamisans X, Lafuente J, Gabriel D, J. Chem. Technol. Biotechnol., 85(3), 378 (2010)
Gahan CS, Sundkvist JE, Sandstrom A, Miner. Eng., 23, 731 (2010)
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Kim KH, Kim HY, Atmos. Environ., 36, 663 (2002)
Gahan CS, Sundkvist JE, Sandstrom A, J. Hazard. Mater., 172(2-3), 1273 (2009)
