Effects of Pb2+, Cd2+ and Cu2+ on the aqueous Zn2+ sorption by hydroxyapatite

被引：0

作者：

Qi, Yong ^{[1
]}

Liu, Yu ^{[1
]}

机构：

[1] Wuhan Inst Technol, Sch Mat Sci & Technol, Wuhan 430073, Hubei, Peoples R China

来源：

ACTA GEOLOGICA SINICA-ENGLISH EDITION | 2006年 / 80卷 / 02期

关键词：

hydroxyapatite; heavy metal ions; sorption;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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+.

引用

页码：226 / 229

页数：4

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