Fluoride removal on Fe–Al-impregnated granular ceramic adsorbent from aqueous solution

被引：0
|
作者：
Nan Chen
Chuanping Feng
Miao Li
机构：
[1] Ministry of Education,Key Laboratory of Groundwater Cycle and Environment Evolution
[2] China University of Geosciences (Beijing),undefined
[3] School of Water Resources and Environment,undefined
[4] China University of Geosciences (Beijing),undefined
[5] School of Environment,undefined
[6] Tsinghua University,undefined
来源：
Clean Technologies and Environmental Policy | 2014年 / 16卷
关键词：
Adsorption; Fluoride removal; Granular ceramics; Kinetics and isotherms;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel Fe–Al-impregnated granular ceramic adsorbent has been developed for fluoride removal from aqueous solution. Batch experiments were performed to investigate the effect of contact time, initial pH, adsorbent dose, and the presence of competing anions on the adsorption of fluoride. More than 96 % removal of fluoride was achieved within 48 h from 10 mg/L initial fluoride solution at neutral pH. The adsorption process was well explained with pseudo-second-order and pore diffusion models. The maximum adsorption capacity of adsorbent for fluoride removal was 3.56 mg/g according to the Langmuir isotherm model. The optimum fluoride removal efficiency was observed between pH ranged of 4.0–9.0. The fluoride removal efficiency was significantly decreased in the presence of carbonate and phosphate anions. Results from this study demonstrated potential utility of Fe–Al-impregnated granular ceramic adsorbent that could be developed into a viable method for fluoride removal from aqueous solution.
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页码：609 / 617
页数：8
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