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《Mining and Metallurgical Engineering》 2004-02
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Effects of pH and Temperature on Thiobacillus Ferrooxidans'Oxidation of Fe~(2+)

WANG Qing-liang 1,2,LIU Xuan-ming 1 (1. The Institute of Bioscience and Biotechnology,Hunan University, Changsha 410082, Hunan, China; 2. School of Architectural Engineering, Resources and Environment, Nanhua University, Hengyang 421001, Hunan, China)  
The effects of temperature and pH on oxidation of Fe 2+ were investigated by applying self-collected thiobacillus ferrooxidans(Tf) instead of hydrogen peroxide as oxidant to oxidize and absorb Fe 2+ in tailing water. It was found that the most suitable temperature at which Tf oxidizes Fe 2+ in tailing water is 30 ℃. When the temperture is lower than 7 ℃ or higher than 50 ℃, the Fe 2+ oxidation rate is small. The most suitable pH of which Tf oxidizes Fe 2+ is 2.0~2.5.
【Fund】: 国家自然科学基金重点项目 (50 2 340 1 0 )
【CateGory Index】: Q939.9
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