A Kinetic Assessment of Substantial Oxidation by Sulfolobus acidocaldarius in Pyrite Dissolution
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概要
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The relative contributions of biological and chemical reactions to the total rate of pyrite oxidation in the presence of Sulfolobus acidocaldarius were studied on the basis of experimental work coupled with mathematical modeling. Kinetic constants for the individual reactions were determined in independent experiments. The specific growth rate of cells on the pyrite surface, which is the only unknown parameter, was assumed to be (μ_S=0.1 h^<-1>) and justified by the agreement of the simulated results of a proposed model and the experimental results. The model includes : reversible adsorption, biological dissolution of pyrite by the adsorbed cells, chemical dissolution of pyrite accompanied by the reduction of ferric ions to ferrous ions, biochemical oxidation of ferrous ions to ferric ions by free cells, and change of the surface area of pyrite particles. It is suggested that the contributions of direct (biological) and indirect (chemical) reactions to the total rate of pyrite oxidation were in a ratio of 2 : 1.
- 社団法人日本生物工学会の論文
- 1994-05-25
著者
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TODA KIYOSHI
Institute of Applied Microbiology, The University of Tokyo
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Toda Kiyoshi
Institute Of Applied Microbiology University Of Tokyo
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KOIZUMI JUN-ICHI
Institute of Applied Microbiology, The University of Tokyo
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Koizumi Jun-ichi
Institute Of Applied Microbiology The University Of Tokyo
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Koizumi Jun-ichi
Institute Of Molecular And Cellular Biosciences The University Of Tokyo
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VITAYA VIROTE
Department of Chemical Engineering, King Mongkut's Institute of Technology Thonburi
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Toda Kiyoshi
Institute Of Applied Microbiology The University Of Tokyo
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Vitaya Virote
Department Of Chemical Engineering King Mongkut's Institute Of Technology Thonburi
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