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

• Published in: Acta geologica Sinica (Beijing) Vol. 80; no. 2; pp. 262 - 266
• Main Authors: Fei, LIU, Yuanying, HUANG, Weihua, CUI
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.04.2006
• Subjects: dechlorination; Nano-Ni/Fe; perchloroethylene (PCE); reaction rate; 全氯乙烯; 去除方法; 地球化学
• ISSN: 1000-9515; 1755-6724
• DOI: 10.1111/j.1755-6724.2006.tb00240.x

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.