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Adsorption of soluble metal ions from red mud by modified activated carbon

被引：2
|
作者：
Zhou, Hualei [1 ]
Li, Dongyan [1 ]
Gong, Guozhuo [1 ]
Tian, Yajun [1 ]
Chen, Yunfa [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100080, Peoples R China
来源：
HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷
关键词：
activated carbon; chemical modifier; red mud; scandium;
D O I：
10.4028/www.scientific.net/KEM.368-372.1541
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Activated carbon was employed as the adsorption carrier for the metal ions in HCl solution of red mud, a solid waste produced in alumina industry. To improve the adsorption capacity to valuable metal ions, the activated carbon was modified by chemicals including HNO3, H2O2, H2SO4, H3PO4, NH3, Na2CO3, and tri-butyl phosphate (TBP). It was found that the modifications contributed the high adsorption capacity to almost all metal ions we focused on. In the case of TBP, remarkably higher adsorption capacity and selectivity of Sc3+ was observed. The correlation between the surface areas, IR spectra of those chemically modified activated carbons and adsorption was schemed.
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收藏
页码：1541 / 1544
页数：4
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