高效硫酸盐还原菌对煤矸石硫污染的修复作用  

Bioremediation of sulfuric contamination from coal wastes by sulfate-reducing bacteria (SRB)

作　　者：胡振琪[1] 马保国[1,2] 张明亮[1] 王萍[1] 

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083 [2]河北工程大学水电学院,河北邯郸056021

出　　处：《煤炭学报》2009年第3期400-404,共5页Journal of China Coal Society

基　　金：国家高技术研究发展计划(863)基金资助项目(2006AA06Z355);国家自然科学基金资助项目(50874112);教育部新世纪优秀人才计划项目(NCET-04-0484)

摘　　要：利用从黄土中分离的硫酸盐还原菌修复煤矸石酸性污染,以乳酸钠作碳源,探讨了加不同量碳源和不同接种量情况下硫酸根的去除率,并对煤矸石浸液的pH值、氧化还原电位和电导率的变化作定量测定,研究了硫酸盐还原菌的几种影响条件.实验结果表明:利用硫酸盐还原菌来修复煤矸石酸性污染的思路可行,向煤矸石中接种硫酸盐还原菌硫酸根最高转化率可达95.5%,可提高煤矸石浸液的pH值,降低其氧化还原电位和电导率,从源头上抑制酸矿水的产生,能有效控制含硫煤矸石在降雨酸性淋溶的环境污染.Sulfate-reducing bacteria （SRB） was isolated from the loess polluted by acid mine drainage （AMD） from coal wastes. The aim of this test is to study the possibility of using SRB for remediating sulfuric pollution from coal wastes, which is considered to be the major environmental problem associated with coal mining activities. Tests were conducted to determine if the bacteria produced hydrogen sulfide could be used for the removal of sulfate and the increase of pH of AMD from coal wastes. Investigated the mechanisms of the sulfate anions precipitation in the form of sulfides from the coal wastes by sulfate-reducing bacteria. The dosage of sulfate-reducing bacteria inoculation and the amount of carton source were tested. The sulfate is reduced in this process and the rate of sulfate reduction reaches 95.5%. The results show that sulfate-reducing bacteria can effectively remove sulfate of acid mine drainage from coal wastes, increase pH and decrease the potential and conductivity of AMD from coal wastes. SRB can remediate sulfuric contamination from coal wastes.

关 键 词：硫酸盐还原菌 煤矸石 硫污染 生物修复 

分 类 号：TD849.5[矿业工程—煤矿开采]