Impact Factors on Removal of Perchloroethylene with Nano-Ni/Fe Methodology  

作　　者：LIU Fei HUANG Yuanying CUI Weihua 

机构地区：[1]Beijing Key Laboratory of Water Resources ＆ Environmental Engineering, China University of Geosciences （Beijing）, Beijing 100083 [2]National Center for Geoanalysis, Beijing 100037

出　　处：《Acta Geologica Sinica(English Edition)》2006年第2期262-266,共5页地质学报（英文版）

基　　金：the National Natural Science Foundation of China （40572146） ; the project （2002BA906A28-1B） from the Ministry of Science and Technology of China.

摘　　要：Chlorinated hydrocarbons are widely detected in groundwater, but conventional removal methodologies are not time-and-cost effective. With the development of iron reducing technology in recent years, research on nano-iron and nano-bimetal has become a hot spot. The paper presents the results of impact factors on perchloroethylene （PCE） removal by nano-Ni/Fe method. The data show that the reaction rate of unexposed nano-Ni/Fe is 4 times higher than exposed one; and temperature is one of the important controlling factors. Reaction rate constant KSA increases by 2-3 times with every 10℃ increment of temperature. Within a specific range, higher Ni/Fe ratio favors dechlorination process. When the Ni/Fe is 8%, the dechlorination process reaches the highest rate. Dissoved oxygen in the solution does not favor the degradation of chlorinated hydrocarbons.Chlorinated hydrocarbons are widely detected in groundwater, but conventional removal methodologies are not time-and-cost effective. With the development of iron reducing technology in recent years, research on nano-iron and nano-bimetal has become a hot spot. The paper presents the results of impact factors on perchloroethylene （PCE） removal by nano-Ni/Fe method. The data show that the reaction rate of unexposed nano-Ni/Fe is 4 times higher than exposed one; and temperature is one of the important controlling factors. Reaction rate constant KSA increases by 2-3 times with every 10℃ increment of temperature. Within a specific range, higher Ni/Fe ratio favors dechlorination process. When the Ni/Fe is 8%, the dechlorination process reaches the highest rate. Dissoved oxygen in the solution does not favor the degradation of chlorinated hydrocarbons.

关 键 词：perchioroethylene （PCE） Nano-Ni/Fe reaction rate DECHLORINATION 

分 类 号：P595[天文地球—地球化学]