Modification Modification of hydroxyapatite for removal of cesium and strontium ions from aqueous solution

被引：98

作者：

Metwally, Sayed S. ^{[1
]}

Ahmed, Ismail M. ^{[1
]}

Rizk, Hoda E. ^{[1
]}

机构：

[1] Hot Labs Ctr, Atom Energy Author, Cairo 13759, Egypt

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 709卷

关键词：

Hydroxyapatite; Ion exchange; Strontium; Cesium; COMPOSITE; ADSORPTION; SORPTION; LEAD; SR2+; IMMOBILIZATION; NANOPARTICLES; EQUILIBRIUM; EXCHANGER; CATIONS;

D O I：

10.1016/j.jallcom.2017.03.156

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hydroxyapatite-cobalt(II) ferrocyanide, HAFC, was prepared, characterized and used for removal of strontium and cesium ions from aqueous solution. Comparative studies on modified and unmodified hydroxyapatite for sorption of both ions were carried out to evaluate the modification process. The sorption process is controlled by an ion exchange mechanism. The modification process of hydroxyapatite enhanced the capacity of cesium ions from 9.26 to 69.49 mg/g, while for strontium ions from 12.84 to 13.44 mg/g, this means that the modification process enhanced the selectivity of cesium ions, and it may be stated that HAFC preferentially takes up Cs+ rather than Sr2+. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：438 / 444

页数：7

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