Enhanced cell density culture of Thiobacillus ferrooxidans in membrane-type bioreactor with electrolytic reduction unit for ferric ion.
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概要
- 論文の詳細を見る
Enhanced cell density culture of <I>Thiobacillus ferrooxidans</I> was achieved by using a membrane-type bioreactor with cell filtration and iron recycling units. Using an electrolytic bath with an anion exchange membrane, microbially produced Fe<SUP>3+</SUP> could be reduced to Fe<SUP>2+</SUP> without loss of main nutrients in the medium. It was confirmed that <I>T. ferrooxidans</I> exhibited active growth in the electrochemically regenerated medium. In the repeated-batch culture with cell filtration and feeding of the regenerated medium, the cell concentration obtained was at least 4–11 times higher than that in a conventional batch culture. In this culture system, the measurement of medium redox potential made it possible to estimate the concentrations of cells and iron, and to determine the time for culture filtration and medium-feeding operations.
- The Society of Chemical Engineers, Japanの論文
著者
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Tone Setsuji
Department Of Chemical Engineering Faculty Of Engineering Science Osaka University
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Taya Masahito
Department Of Biotechnology Graduate School Of Engineering Osaka University
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Shiraishi Hiroyuki
Department of Chemical Engineering, Osaka University
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Katsunishi Tetsuya
Department of Chemical Engineering, Osaka University
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