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首页> 外文期刊>Energy Conversion & Management >Biodesulphurization of Indian (Assam) coal using Thiobacillus ferrooxidans (ATCC 13984)
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Biodesulphurization of Indian (Assam) coal using Thiobacillus ferrooxidans (ATCC 13984)

机译：使用氧化亚铁硫杆菌对印度（Assam）煤进行生物脱硫（ATCC 13984）

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摘要

The pyritic suphur removal from coal and pyrite by Thiobacillus ferrooxidans was studied in a batch reactor. Microbial oxidation of ferrous iron to the ferric form, the central step in the biodesuphurization process was found to be affected by the substrate and product concentration. Direct microbial oxidation of pyrite was dominant during the exponential phase, while indirect electrochemical oxidation was observed at the stationary phase of the growth. The effect of various parameters, such as pulp density, ferrous and ferric iron concentrations on the rate of biodesuphurization was studied. The rate of pyritic suphur removal was retarded at higher concentrations of ferrous and ferric iron. Therefore, during the process, the concentrations of Fe(II) and Fe(III) iron in the bioreaction mixture need to be controlled to maintain high rates of pyritic sulphur removal.
机译：在分批反应器中研究了氧化亚铁硫杆菌从煤和黄铁矿中去除硫铁矿。将亚铁微生物氧化为三价铁，这是生物脱硫过程的核心步骤，受底物和产物浓度的影响。在指数期，黄铁矿的直接微生物氧化作用占主导地位，而在生长的固定相则观察到间接电化学氧化作用。研究了纸浆密度，亚铁和三价铁浓度等各种参数对生物脱硫速率的影响。在较高浓度的亚铁和三价铁中，硫铁矿中硫去除的速率受到阻碍。因此，在该过程中，需要控制生物反应混合物中Fe（II）和Fe（III）铁的浓度，以保持高硫铁矿硫去除率。

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