期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 164, 期 1, 页码 126-132出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2008.07.149
关键词
2,2 ',4,5,5 '-Pentachlorobiphenyl; Dechlorination; Pd/Fe bimetal; Catalytic reduction; Soil remediation
资金
- National Basic Research Program (973) of China [2004CB418506]
- National High Technology Research and Development Program of China (863 Program) [2007AA061101]
Pd/Fe bimetallic particles were synthesized by chemical deposition and used to dechlorinate 2,2',4,5,5'-pentachlorobiphenyl in soil. Batch experiments demonstrated that the Pd/Fe bimetallic particles could effectively dechlorinate 2,2',4,5,5'-pentachlorobiphenyl. Dechlorination was affected by several factors such as reaction time, Pd loading, the amount of Pd/Fe used, initial soil pH, and 2.2',4,5,5'-pentachlorobiphenyl concentration. The results showed that higher Pd loading, higher dosage of Pd/Fe, lower initial concentration of 2,2',4,5,5'-pentachlorobiphenyl and slightly acid condition were beneficial to the catalytic dechlorination of 2,2',4.5.5'-pentachlorobiphenyl. The degradation of 2,2',4.5,5'-pentachlorobiphenyl, catalyzed by Pd/Fe followed pseudo-first-order kinetics. (C) 2008 Elsevier B.V. All rights reserved.
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