Adsorption capacity of bone char for removing fluoride from water solution. Role of hydroxyapatite content, adsorption mechanism and competing anions

被引：135

作者：

Medellin-Castillo, N. A. ^{[1
]}

Leyva-Ramos, R. ^{[2
]}

Padilla-Ortega, E. ^{[2
]}

Ocampo Perez, R. ^{[2
]}

Flores-Cano, J. V. ^{[2
]}

Berber-Mendoza, M. S. ^{[1
]}

机构：

[1] Univ Autonoma San Luis Potosi, Fac Ingn, Ctr Invest & Estudios Posgrad, San Luis Potosi 78290, Mexico

[2] Univ Autonoma San Luis Potosi, Fac Ciencias Quim, Ctr Invest & Estudios Posgrad, San Luis Potosi 78210, Mexico

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2014年 / 20卷 / 06期

关键词：

Adsorption; Bone char; Fluoride; Hydroxyapatite; Water pollution; AQUEOUS-SOLUTION; SORPTION; IONS; DEFLUORIDATION; BATCH; CD-2+;

D O I：

10.1016/j.jiec.2013.12.105

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of fluoride from water on bone char (BC) was investigated in this work, and the fluoride adsorption capacity of BC was compared to that of hydroxyapatite (HAP). The adsorption capacity of BC and HAP drastically increased while decreasing the pH from 7.0 to 5.0. Furthermore, the fluoride adsorption on BC was due to its HAP content and was not considerably affected by the presence of the anions Cl-, HCO3-, CO32-, SO42-, NO3- and NO2-. The mechanism of fluoride adsorption on BC was attributed to electrostatic interactions between surface charge of BC and fluoride ions in solution. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：4014 / 4021

页数：8

共 38 条

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