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Bioremediation of Acid-Mine Drainage contaminated with acid and heavy metals in coal mine by Sulfate-Reducing Bacteria

机译:通过硫酸盐还原细菌对酸和重金属的酸和重金属污染的酸矿排出的生物修复

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Acid-Mine Drainage (AMD) that releases highly acidic,sulfate,and metals-rich waste is a severe environmental problem,contaminating surface and groundwater as well as soils in coal mining districts in China.In this study,Sulfate-Reducing Bacteria (SRB) was isolated from the loess polluted by Acid Mine Drainage (AMD) from coal wastes.The aim of the test is to study the possibility of using SRB for preventing acid and heavy metals 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 SRB could be used for increasing pH and the immobilization of soluble heavy metals of AMD from coal wastes.We investigated the mechanisms of preventing acid and heavy metals from coal waste by sulfate-reducing bacteria and effect of the dosage of carbon source on controlling acid and heavy metals contamination.The results show that SRB can effectively enhance pH and immobilize iron,cadmium and zinc of acid mine drainage from coal wastes.The 1% dosage of carbon source is suitable.
机译:酸矿山废水(AMD)释放高度酸性,硫酸盐和丰富的金属废料是一种严重的环境问题,污染地表水和地下水,以及在China.In这项研究煤炭开采区的土壤,硫酸盐还原菌(SRB )从煤废弃物污染的黄土污染的黄土中分离出来。该试验的目的是研究使用SRB用于预防煤废物的酸和重金属污染,这被认为是主要的环境与采煤activities.Tests相关联的问题进行了以确定该SRB可用于增加pH和AMD的可溶性重金属固定化从煤wastes.We由硫酸盐调查防止煤废酸和重金属的机理减少细菌和碳源剂量对控制酸和重金属污染的影响。结果表明,SRB可以有效地增强pH和固定铁,镉和锌o F酸性矿井排水从煤废物中排出。1%的碳源剂量是合适的。

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