The direct adsorption of low concentration gallium from fly ash

被引：35
作者：
Li, Shaopeng [1 ]
Wu, Wenfen [1 ,2 ]
Li, Huiquan [1 ]
Hou, Xinjuan [1 ]
机构：
[1] Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2016年 / 51卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Gallium; coal fly ash; amidoxime resin; adsorption; BAYER LIQUOR; RECOVERY; EXTRACTION; SORPTION; RESIN; SEPARATION;
D O I：
10.1080/01496395.2015.1102282
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This study is mainly focused on the direct adsorption of low concentration gallium from the feed solution in pre-desilication soda-lime sintering process from coal fly ash. The adsorption kinetics, mechanism, and the influence of impurities, cyclic times, and eluant content are systematically researched. Results showed that the adsorption capacity was 2.89 mg/g resin with gallium concentration of 50 mg/L. The adsorption mechanism could be explained by the interaction between the oxygen atoms and nitrogen atoms of amidoxime group. Gallium was eluted efficiently by NaOH and Na2S mixed solution and the concentration could be reached to 2400 mg/L.
引用
收藏
页码：395 / 402
页数：8
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