地质学报（英文版）2006，Vol.80Issue(2)：226-229,4.
Effects of Pb2+, Cd2+ and Cu2+ on the Aqueous Zn2+ Sorption by Hydroxyapatite
Effects of Pb2+, Cd2+ and Cu2+ on the Aqueous Zn2+ Sorption by Hydroxyapatite
QI Yong 1LIU Yu1
作者信息
- 1. School of Material Science and Technology, Wuhan Institute of Technology, Wuhan, Hubei 430073
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摘要
Abstract
In this paper, the behaviors of aqueous zinc sorption by hydroxyapatite in the co-existence of Pb2+, Cd2+ and Cu2+ are investigated, the effects of Pb2+, Cd2+ and Cu2+ on the sorption of Zn2+ are discussed, and the hydroxyapatite sorption capabilities for Pb2+, Cd2+, Cu2+ and Zn2+ are compared.The experimental results show that the Zn2+ removal efficiency decreases gradually with the increase of the Cd2+ concentration of the solution, and there is no sorption preference between Cd2+ and Zn2+. On the other hand, the Zn2+ removal efficiency rapidly decreases rapidly with the increase of the Cu2+ concentration of the solution, and there is a clear sorption preference between Cu2+ and Zn2+. It is noticed that the Zn2+ removal efficiency is hardly changed with the variance of Pb2+ concentration because the removal mechanisms for these two ions are totally different. It is concluded that the adsorption affinities of the heavy metals for the hydroxyapatite follows this sequence: Pb2+＞ Cu2+＞Cd2+＞ Zn2+.关键词
hydroxyapatite/heavy metal ions/sorptionKey words
hydroxyapatite/heavy metal ions/sorption分类
天文与地球科学引用本文复制引用
QI Yong,LIU Yu..Effects of Pb2+, Cd2+ and Cu2+ on the Aqueous Zn2+ Sorption by Hydroxyapatite[J].地质学报（英文版）,2006,80(2):226-229,4.
