固定化氧化亚铁硫杆菌生物化学联合氧化硫酸亚铁的研究

M. Nemati, C. Webb
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引用次数: 19

摘要

在填料床生物反应器中,采用活性炭包覆固定化在生物质载体颗粒中的氧化亚铁硫杆菌,研究了化学催化和生物催化对亚铁氧化的联合作用。研究了亚铁浓度(5-30 kg m−3)及其体积负荷对反应动力学的影响。在低浓度的亚铁(5-10 kg m−3)条件下,组合催化剂对亚铁的氧化没有明显的优势,反应动力学比单独使用生物催化剂的反应略快。当铁的浓度为20 kg m−3时,化学和生物联合催化可显著提高反应速率。复合催化剂作用下亚铁的最大氧化速率为21.9 kg m−3 h−1,是单纯生物催化剂作用下氧化速率的两倍。©1999化学工业学会
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Combined biological and chemical oxidation of ferrous sulfate using immobilised Thiobacillus ferrooxidans
Thiobacillus ferrooxidans immobilised in biomass support particles with activated carbon coating were used in a packed-bed bioreactor to study the combined effects of chemical and biological catalysis on the oxidation of ferrous iron. The effect of ferrous iron concentration (in the range 5–30 kg m−3) and of its volumetric loading on the kinetics of reaction were investigated. With low concentrations of ferrous iron, 5–10 kg m−3, the combined catalysis did not offer a significant advantage to oxidation of ferrous iron and the kinetics of reaction were slightly faster than those achieved with just the biological catalyst. With ferrous iron at a concentration of 20 kg m−3, the combination of chemical and biological catalysis resulted in a remarkable enhancement of the reaction rate. The maximum oxidation rate of ferrous iron in the presence of combined catalysts, 21.9 kg m−3 h−1, was twice as high as that achieved with just the biological catalyst. © 1999 Society of Chemical Industry
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