Enhancement of growth and ferrous iron oxidation rates of T. Ferrooxidans by electrochemical reduction of ferric iron
Enhancement of growth and ferrous iron oxidation rates of T. Ferrooxidans by electrochemical reduction of ferric iron
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DOI：
10.1002/bit.260281214
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发表时间：
1986-12
影响因子：
3.8
通讯作者：
S. Yunker;J. Radovich
中科院分区：
文献类型：
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作者：
S. Yunker;J. Radovich
氧化亚铁硫杆菌，最广泛使用的细菌;在生物浸出或微生物脱硫研究中，生长在含有合成硫酸亚铁培养基的电解生物反应器中。电流通过介质将细菌产生的三价铁还原为亚铁基质。当与已经适应电解生长条件的接种物结合使用时，该技术使蛋白质（细胞）浓度增加了3.7倍，使蛋白质（细胞）生产率增加了6.5倍，使产率系数增加了2.5倍。（细胞效率）提高了8.0倍，在29°C下亚铁氧化速率提高了1.5倍。具有最大比生长速率可接受值的Monod型方程无法解释电解条件下生长速率的增加。
Thiobacillus ferrooxidans, the bacterium most widely used; in bioleaching or microbial desulfurization studies, was grown in an electrolytic bioreactor containing a synthetic, ferrous sulfate medium. Passage of current through the medium reduced the bacterially generated ferric iron to the ferrous iron substrate. When used in conjunction with an inoculum that had been adapted to the electrolytic growth conditions, this technique increased the protein (cell) concentration by 3.7 times, increased the protein (cell) production rate by 6.5 times, increased the yield coefficient (cellular efficiency) by 8.0 times, and increased the ferrous iron oxidation rate by 1.5 times at 29°C, compared with conventional cultivation techniques. A Monod‐type equation with accepted values for the maximum specific growth rate could not account for the increased growth rate under electrolytic conditions.