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首页> 外文期刊>Journal of Hazardous Materials >Catalytic Dechlorination Of Polychlorinated Biphenyls In Soil By Palladium-iron Bimetallic Catalyst
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Catalytic Dechlorination Of Polychlorinated Biphenyls In Soil By Palladium-iron Bimetallic Catalyst

机译：钯铁双金属催化剂对土壤中多氯联苯的催化脱氯

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摘要

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.
机译：通过化学沉积法合成了Pd / Fe双金属颗粒，并用于对土壤中的2,2'，4,5,5'-五氯联苯进行脱氯。批处理实验表明，Pd / Fe双金属颗粒可以有效地脱氯2,2'，4,5,5'-五氯联苯。脱氯受几个因素影响，例如反应时间，Pd负载量，Pd / Fe用量，初始土壤pH值和2,2'，4,5,5'-五氯联苯浓度。结果表明，较高的Pd载量，较高的Pd / Fe用量，较低的2,2'，4,5,5'-五氯联苯初始浓度和弱酸性条件有利于2,2'，4的催化脱氯， 5,5'-五氯联苯。 Pd / Fe催化的2,2'，4,5,5'-五氯联苯的降解遵循拟一级动力学。

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