Dechlorination of pentachloroethane by commercial Fe and ferruginous smectite

被引：17

作者：

Cervini-Silva, J

Larson, RA

Wu, J

Stucki, JW

机构：

[1] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA

[2] Univ Illinois, Dept Nat Resources & Environm Sci, Urbana, IL 61801 USA

来源：

CHEMOSPHERE | 2002年 / 47卷 / 09期

基金：

美国国家科学基金会;

关键词：

structural-Fe oxidation state; smectites; dechlorination; permeable reactive barriers; groundwater remediation;

D O I：

10.1016/S0045-6535(02)00056-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Short-term experiments were conducted to investigate the effect of a commercial Fe and an iron-bearing clay mineral, ferruginuous smectite (SWa-1), on the degradation of pentachloroethane (PCA). After 3 h of contact time, SWa-1 catalyzed PCA dehydrochlorination to tetrachloroethene (PCE, 65% conversion), whereas commercial Fe promoted PCA stepwise dechlorination via dehydrochlorination (approximate to40% conversion) and subsequent PCE hydrogenolysis to trichloroethene (TCE). The addition of unaltered SWa-1 to commercial Fe led to a complete inhibition on TCE production, whereas the addition of reduced SWa-1 barely resulted in a 30% decrease. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：971 / 976

页数：6

共 23 条

[21] THE INFLUENCE OF A SMECTITE CLAY ON THE HYDROLYSIS OF IRON(III) [J].