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中文摘要：
氯代烃是地下水中最常检出的有机污染物之一，传统的处理方法去除率很低。近年来随着铁还原技术的发展，纳米铁和纳米双金属也成为一个活跃的研究领域。利用批实验的研究方法以四氯乙烯（PCE）和四氯化碳（CT）为目标污染物，研究纳米镍／铁在去除PCE过程中的影响因素。实验结果表明，在碱性条件下，纳米Ni／Fe对PCE脱氯速率比在酸性和中性条件下脱氯速率更快；纳米Ni／Fe对初始浓度为6．51mg／L的PCE溶液脱氯速率是对初始浓度为20．56mg／L的PCE溶液脱氯速率的1．8倍；对于氯代程度相同的CT和PCE，对CT的脱氯速率明显快于对PCE。
英文摘要：
Chlorinated hydrocarbons are commonly detected in groundwaters, and the traditional methods to remove them are not time and cost effective. With an improvement of iron reduction technology, nano-Fe and nano-Ni/Fe have become active research topics in the last two decades. The factors influencing the removal of perehloroethylene （PCE） and carbon tetraehloride （CT） by nano-Ni/Fe have been studied by batch experiments. A comparative study shows that basic condition is more helpful than the acidic and the neutral conditions for the degradation of PCE using nano-Ni/Fe. The reaction rate of the degradation for an initial concentration of 6.51 mg/L is 1.8 times faster than that for an initial concentration of 20. 56 mg/L. Although PCE and CT have the same number of chlorine atoms in their molecular structures, the experiment indicates that the deehlorination of CT by nano-Ni/Fe is much faster than that of PCE.
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Anaerobic Biodegradation of Tetrachloroethylene with Acetic Acid as Cometabolism Substrate under Ana
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