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《Environmental Pollution & Control》 2007-03
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Study on microbial desulphurization of coal waste

Bi Yinli,Liu Bohui. (College of Resources and Safe Engineering,China University of Mining and Technology,Beijing 100083)  
A strain of chemolithoautotrophic sulfur oxidizing bacterium was isolated from acidic DaWukou coal waste by collecting the samples and enriching culture in the lab. It was shown that the strain had good performance of desulphurization after soaking coal wastes into the strain solution and pole leaching. The results indicated that the desulphurization could approach ca.0.79 g/L after soaking coal wastes 2 hours and the desulphurization rate was 24.5%. It was also found that the desulphurization performance even increased up to 28.3% after 21 days cultured, which would provide options for the coal wastes quick desulphurization. Furthermore, the leaching experiment was carried out to study the desulphurization effects of the strain on the coal wastes and the results showed that 0~9th day is the active period of microbial desulphurization process. It was thought that the investigation here could offer more information for coal wastes ecological restoration and environment protection.
【Fund】: 国家自然科学基金资助项目(No20377051);; 国家“863”计划项目(No2006AA06Z372);; 国家科技支撑项目(No2006BAC09B03)
【CateGory Index】: X701.3
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