Effect of pH on PCP remediation by smectite supported Pd0/Fe0
HanJunli ; JiaHanzhong ; SongCunyi
2013
会议名称2012 International Conference on Sustainable Energy and Environmental Engineering, ICSEEE 2012
会议日期December 29, 2012 - December 30, 2012
会议地点Guangzhou, China
页码1490-1496
通讯作者Han, J.(hjlbt@126.com)
中文摘要Due to its influence on iron corrosion and involvement in dechlorination reaction, the concentration of H+ (i.e. reaction pH) is crucial to the reactivity and efficiency of nanosized Pd0/Fe0. In this study, PCP dechlorination by smectite-templated Pd0/Fe0 was studied and the effect of pH on PCP dechlorination was investigated in detail. The reaction rate constant is critically dependant on the reaction pH over the range 6.0~10.0. When the pH is 6.0~8.0, the dechlorination rate constant (kobs) increases rapidly with decreasing the reaction pH value; the rate change is up to 3.346 folds with decreasing of per pH unit; while it decreases down to 0.3338 when pH is in the range 8.0~10.0. The reductive efficiency of zero-valent iron (ZVI) was further investigated by spiking excess PCP in the reaction system. The maximal reaction efficiency of ZVI for PCP dechlorination attains to 78% when pH is 9.0. The difference between the dechlorination rate and reductive efficiency with respect to reaction pH suggest that ZVI could not be effectively utilized to reduce PCP under acidic condition.
收录类别EI
会议录出版地Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种英语
ISSN号16609336
ISBN号9783037856499
内容类型会议论文
源URL[http://ir.xjipc.cas.cn/handle/365002/3622]  
专题新疆理化技术研究所_环境科学与技术研究室
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HanJunli,JiaHanzhong,SongCunyi. Effect of pH on PCP remediation by smectite supported Pd0/Fe0[C]. 见:2012 International Conference on Sustainable Energy and Environmental Engineering, ICSEEE 2012. Guangzhou, China. December 29, 2012 - December 30, 2012.
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