Chromium precipitation by the acidophilic bacterium Thiobacillus ferrooxidans

被引：31
作者：
Baillet, F
Magnin, JP
Cheruy, A
Ozil, P
机构：
[1] UJF, INPG, CNRS, ENSEEG,UMR 5631,LEPMI,Bioproc Engn Grp, F-38402 St Martin Dheres, France
[2] UJF, INPG, CNRS, ENSIEG,UMR 5528,LAG, F-38402 St Martin Dheres, France
来源：
BIOTECHNOLOGY LETTERS | 1998年 / 20卷 / 01期
关键词：
D O I：
10.1023/A:1005351718705
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Thiobacillus ferrooxidans tolerates Cr3+ up to 75 mM during growth on ferrous sulphate without modification of its bacterial activity (53 mu g protein mM(-1) Fe2+ oxidised). At pH 1.4 and in the presence of Cr2O3, a maximal uptake capacity of 509 mg.g(-1) dry weight was obtained with biomass harvested in the middle of the exponential growth phase. Cr6+ uptake by T. ferrooxidans resulted in the precipitation of a chromium-rich compound on the surface bacterial cells, as observed by transmission electron microscopy.
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页码：95 / 99
页数：5
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