Reductive Dechlorination of Chlorinated Hydrocarbons in water by Cu/Fe Bimetallic Reductant
The influence of Cu on the dechlorination rate of various chlorinated hydrocarbons including CF, CT, 1,1,1-TCA, 1,1,2,2-TeCA and HCA by Fe0 and Cu/Fe was investigated in batch experiments. All organohalides can be dechlorinated rapidly by Fe or Cu/Fe in aqueous system and the contaminants were degraded via sequential reductive dechlorination to form less chlorinated homologues. The removal of CF, CT, 1,1,1-TCA, 1,1,2,2-TeCA and HCA followed pseudo-first-order kinetics both in Fe0 system and Cu/Fe system. Cu/Fe reductant could enhance the dechlorination rate of all chlorinated hydrocarbons.The degradation rate constant of a general dechlorination was increased by a factor of 3 in Cu/Fe system than that in Fe0 system. The intermediate products of dechlorination and the major pathway were summarized in this study. Hydrogenolysis and reductive elimination was the dominant reaction for various chlorinated hydrocarbons dechlorination by Cu/Fe with respect to the products.
chlorinated hydrocarbons reductive dechlorination Cu/Fe bimetallic reductant
De-Li WU Hong-Wu WANG Jing-Hong Fan Lu-Ming MA
State Key Laboratory of Pollution Control and Resources, Tongji University Shanghai P.R. China
国际会议
上海
英文
1038-1041
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）