Adsorptive Removal of Fluoride from Aqueous Solution Using Modified Fly Ash

被引：0
|
作者：
Li Caihong [1 ]
Gao Huimin [1 ]
Lu Jun [1 ]
Wang Peipei [1 ]
机构：
[1] Inner Mongolia Univ Technol, Chem Engn Coll, Hohhot 010051, Inner Mongolia, Peoples R China
来源：
PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B | 2009年
关键词：
fly ash; modify; fluoride; adsorption; HEAVY-METALS; WASTE-WATER; ACTIVATED CARBON; DEFLUORIDATION; MECHANISM; EFFLUENT; SORBENTS; PB;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In the present study, a new and low cost adsorbent for removal of fluoride from aqueous solution was prepared with fly ash and cerium chloride by impregnation-precipitation method. The effects of three parameters on the removal of fluoride, which are contact time, pH of the solution and the dose of modified fly ash were investigated. As a result, it was found that using modified fly ash as adsorbent to remove fluoride from aqueous solution, the fluoride adsorption capacity was 1.28 mg.g(-1) at pH 4.0, 30 degrees C, contact time 6 h, the dosage of modified fly ash 16 g.L(-1) and 50 mL fluoride solution with an initial fluoride concentration of 30 mg.L(-1). The equilibrium data were fitted to the Freundlich isotherm model. It is observed that the adsorption capacity of modified fly ash increases significantly and the chemical activity of initial fly ash is excited by cerium oxide.
引用
收藏
页码：2339 / 2344
页数：6
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