The Mechanism of Copper Leaching by Intact Cells of Thiobacillus ferrooxidans(Microbiology & Fermentation Industry)
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概要
- 論文の詳細を見る
Under aerobic conditions, washed intact cells of Thiobacillus ferrooxidans AP19-3 solubilized copper enzymatically from a copper concentrate containing Cu(20.48%), Fe(31.61%), 8(38.22%), Pb(3.84%), and Zn(4.22%). The optimum pH of copper solubilization from copper concentrate was at pH 3.0. In contrast, under anaerobic conditions or under aerobic conditions in the presence of sodium cyanide, inhibitor of iron oxidase, the amount of copper solubilized enzymatically from the ore markedly decreased, indicating that iron oxidase is involved in the copper solubilization. Under the conditions under which iron oxidase of the cells cannot operate, Fe^<2+> and Cu^+ ions were produced enzymatically, suggesting that a hydrogen sulfide: ferric ion oxidoreductase (SFORase) was involved in this copper solubilization from the ore. A short treatment of the strain with 0.5% phenol completely destroyed the SFORase. However, this treatment did not affect the iron oxidase of the cells. A concomitant loss of the activity of copper solubilization from the ore was observed in 0.5% phenol-treated cells. The results strongly suggest that both iron oxidase and SFORase are crucial in cooner ore leaching by T. ferrooxidans AP19-3.
- 社団法人日本農芸化学会の論文
- 1990-09-23
著者
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Inagaki Kenji
Division of Bioresources Science, Faculty of Agriculture, Okayama University
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Tano Tatsuo
Division of Bioresources Science, Faculty of Agriculture, Okayama University
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Sugio Tsuyoshi
Division of Bioscience, The Graduate School of Natural Science and Technology, Okayama University
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Tano T
Department Of Biological Function And Genetic Resources Science Faculty Of Agriculture Okayama Unive
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Tano Tatsuo
Department Of Bioresources Chemistry Faculty Of Agriculture Okayama University
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Tano Tatsuo
Division Of Biological Function And Genetic Resources Science Faculty Of Agriculture Okayama Univers
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Furutani Y
Okayama Univ. Okayama Jpn
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Inagaki Kenji
Dep. Of Bioresources Chemistry Graduate School Of Natural Sci. And Technol. Okayama Univ. 1-1-1 Tsus
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Sugio Tsuyoshi
Division Of Biological Function And Genetic Resources Science Faculty Of Agriculture Okayama Univers
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Hatta T
Okayama Univ. Sci. Okayama Jpn
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DE LOS
National Institutes of Biotechnology and Applied Microbiology, University of the Philippines, Los Ba
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HIROSE Toru
Division of Biological Function and Genetic Resources Science, Faculty of Agriculture, Okayama Unive
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De Los
National Institutes Of Biotechnology And Applied Microbiology University Of The Philippines Los Bano
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Hirose Toru
Department Of Biological Function And Genetic Resources Science Faculty Of Agriculture Okayama Unive
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Tano T
Okayama Univ. Okayama Jpn
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Inagaki Kenji
Division Of Bioresources Science Faculty Of Agriculture Okayama University
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Inagaki K
Department Of Bioresources Chemistry Graduate School Of Natural Science And Technology Okayama Unive
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Hirose Toru
Division Of Biological Function And Genetic Resources Science Faculty Of Agriculture Okayama University
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