Retention of fluoride ions from aqueous solution using porous hydroxyapatite - Structure and conduction properties

被引：55

作者：

Hammari, LEL

Laghzizil, A

Barboux, P

Lahlil, K

Saoiabi, A

机构：

[1] Fac Sci Rabat, Lab Chim Phys Gen, Rabat, Morocco

[2] Ecole Polytech, Phys Mat Condensee Lab, F-92128 Palaiseau, France

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2004年 / 114卷 / 1-3期

关键词：

hydroxyapatites; fluoride; retention; crystallization; ionic conductivity;

D O I：

10.1016/j.jhazmat.2004.06.032

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Synthetic porous calcium hydroxyapatite (noted p-HAp) treated with different fluoride concentrations at room temperature in the presence of carbonate, sodium chloride and phosphate-rich media was investigated. The fluoridation rate of the porous calcium hydroxyapatite was 89% using I mol/L [F-] solution compared with 30% for crystalline hydroxyapatite (c-HAp). The high specific surface area of p-HAp (235 m(2) g(-1)) compared with c-HAp sample (47 m(2) g(-1)) has an important effect on the removal of fluoride ions from aqueous solution, when p-HAp was treated with high fluoride concentration to produce calcium fluorohydroxyapatite materials. Fluoride adsorption on porous hydroxyapatites (p-HAp) modified their structural and conduction properties. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：41 / 44

页数：4

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