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首页> 外文期刊>Polish journal of chemical technology >Studies on the effect of coal particle size on biodepyritization of high sulfur coal in batch bioreactor
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Studies on the effect of coal particle size on biodepyritization of high sulfur coal in batch bioreactor

机译：煤粒度对间歇式生物反应器中高硫煤生物脱硫的影响研究

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The moderate thermophilic mix culture bacteria were used to depyritize the Illinois coal of varying particle sizes (-100 μm, 100-200 μm, +200 μm). Mineral libration analysis showed the presence of pyrite along with other minerals in coal. Microbial depyritization of coal was carried out in stirred tank batch reactors in presence of an iron-free 9K medium. The results indicate that microbial depyritization of coal using moderate thermophiles is an efficient process. Moreover, particle size of coal is an important parameter which affects the efficiency of microbial depyritization process. At the end of the experiment, a maximum of 75% pyrite and 66% of pyritic sulphur were removed from the median particle size. The XRD analysis showed the absence of pyrite mineral in the treated coal sample. A good mass balance was also obtained with net loss of mass ranging from 5-9% showing the feasibility of the process for large scale applications.
机译：中度嗜热混合培养细菌用于对各种粒径（-100μm，100-200μm，+ 200μm）的伊利诺伊州煤进行脱硫处理。矿物释放分析表明，煤中存在黄铁矿以及其他矿物。在无铁的9K介质存在下，在搅拌釜间歇式反应器中进行煤的微生物脱硫。结果表明，使用中性嗜热菌对煤进行微生物脱敏是一种有效的方法。此外，煤的粒径是影响微生物脱硫过程效率的重要参数。在实验结束时，从中值粒径中除去了最多75％的黄铁矿和66％的黄铁矿硫。 XRD分析表明在处理过的煤样品中不存在黄铁矿矿物。还获得了良好的质量平衡，质量净损失为5-9％，表明该方法可用于大规模应用。

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