Biosorption of Ag(I) from aqueous solution by Bacillus licheniformis strain R08

被引：6
|
作者：
Sun, Daohua [1 ]
Li, Xueliang [1 ]
Zhang, Genlei [1 ]
机构：
[1] Xiamen Univ, Dept Chem & Biochem Engn, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China
来源：
PROGRESS IN ENVIRONMENTAL PROTECTION AND PROCESSING OF RESOURCE, PTS 1-4 | 2013年 / 295-298卷
关键词：
biosorption; silver; heavy metal; AG+; ADSORPTION; REMOVAL;
D O I：
10.4028/www.scientific.net/AMM.295-298.129
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Biosorption of heavy metals is an effective technology for the treatment of industrial wastewater. In this paper, Bacillus licheniformis R08 was used as biosorbent for Ag+. The physic-chemical properties of biosorption of silver by Bacillus licheniformis R08 were studied. Experimental parameters, including pH, temperature, biosorption time, initial silver ion concentration and biomass concentration were optimized. Under the optimized conditions, the silver biosorption capacity and biosorption efficiency could reach 73.6mg.g(-1) and 73.6%, respectively. Equilibrium isotherms of biosorption by R08 were fitted by Langmuir equation and the theoretical maximum biosorption capacity was 136 mg.g(-1). FTIR results showed that-CO-NH and -COO- groups of R08 cell were confirmed to be the main active groups that could combine with silver ions.
引用
收藏
页码：129 / 134
页数：6
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