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重金属钝化修复剂对镉和铅吸附及解吸特征的影响研究 (Effects of heavy metal passivation repairing agent on cadmium, lead adsorption and desorption characteristics)

Title重金属钝化修复剂对镉和铅吸附及解吸特征的影响研究 (Effects of heavy metal passivation repairing agent on cadmium, lead adsorption and desorption characteristics)
Publication TypeMiscellaneous
Year of Publication2015
AuthorsDongping, Zeng, Yuanfeng Yan, Fang Lin, Weiqi Wang, and Congsheng Zeng
Abstract

In order to determine the effect of the different passivation repairing agent on heavy metal ions (Cd2+ ,Pb2+ ) adsorption and desorption properties ,the adsorption and desorption characteristics by biochar and shells are determined under static conditions .The results show that the shells and biochar adsorption for Cd2+ ions can be better simulated by Langmuir and Freundlich isotherm ,and the adsorption of Pb2+ ions can be better simulated by Freundlich isotherm .When heavy metals in solution of shells and biochar by adding Cd2+ ,Pb2+ , the concentrations the greater ,the adsorption solution suction the stronger ,and the different passivation repairing agent for heavy metal adsorption and desorption capacity is slightly different ,for Cd2+ and Pb2+ ions ,the adsorption of biochar is greater than that of shells .The adsorption capacity of two passivation repairing agents for Pb2+ ions is greater than that for Cd2+ ions .Under the same initial concentration ,the two passivation repairing agents for Cd2+ ions and Pb2+ ions solution for suction are biochar>shells.

URLhttp://d.wanfangdata.com.cn/periodical/syjsygl201509016