期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 186, 期 1, 页码 863-868出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2010.11.083
关键词
Porous granular ceramic; Fluoride removal; Adsorption isotherms; Adsorption kinetics
资金
- JST
- National Key Technology R&D Program in the 11th Five year Plan of China [2006BAJ08B04, 2006BAD01B03]
- 863 Project [2007AA06Z351]
Porous granular ceramic adsorbents containing dispersed aluminum and iron oxides were synthesized by impregnating with salt solutions followed by precipitation at 600 degrees C. In the present work detailed studies were carried out to investigate the effect of contact time, adsorbent dose, initial solution pH and co-existing anions. Characterization studies on the adsorbent by SEM, XRD, EDS, and BET analysis were carried out to clarify the adsorption mechanism. The adsorbents were sphere in shape, 2-3 mm in particle size, highly porous and showed specific surface area of 50.69 sq m/g. The fluoride adsorption capacity of prepared adsorbent was 1.79 mg/g, and the maximum fluoride removal was obtained at pH 6. Both the Langmuir and Freundlich isotherm models were found to represent the measured adsorption data well. The experimental data were well explained with pseudo-second-order kinetic model. Results from this study demonstrated potential utility of Al/Fe dispersed in porous granular ceramics that could be developed into a viable technology for fluoride removal from aqueous solution. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据