固定化Acidithiobacillus ferrooxidans对Fe2+氧化及其生物反应器研究进展

Acidithiobacillus ferrooxidans 对Fe2+的生物氧化是一个非常重要的反应过程, 在生物浸矿、H2S等废气的脱硫、含重金属污泥和酸性矿坑废水的处理等领域有着重要的应用。近些年来，大量的研究主要集中A. ferrooxidans及其反应过程等方面，然而，A. ferrooxidans对Fe2+的催化氧化速率缓慢和稳定性欠佳等问题仍然限制了其商业应用。因此，对A. ferrooxidans的固定化及其生物反应器研究是该技术进一步发展的关键。本文评述了A. ferrooxidans最新应用、存在的问题和解决办法，重点比较了目前文献中报道的各种A. ferrooxidans固定材料、方法，并对目前采用的各种固定化A. ferrooxidans生物反应系统的效率和结构等方面进行了讨论和分析。

Advances in ferrous iron oxidation of immobilized Acidithiobacillus ferrooxidans and biological reactor

The microbial oxidation of ferrous iron to ferric from by Acidithiobacillus ferrooxidans is a significant step in the bioleaching of sulphide minerals, removal of hydrogen sulphide from gaseous effluents, treatment of acid mine drainage and heavy metal in sludge. Over the years, much attention has been paid to this organism and the process it catalyses. However, the slow oxidation rate of ferrous iron and the poor stability restricted its commercial application by this time. So, immobilization of the cell as well as bioreactor would be the key point for industrial applications of this technology. In the present article a brief overview and the future development of the applications of the bacteria were provided, at the same time the efficiencies of various immobilization materials as well as the different bioreactor systems used to date were discussed and analyzed.