Resistance and biosorption mechanism of silver ions by Bacillus cereus biomass

被引：25
|
作者：
Li, Li [1 ]
Hu, Qing [1 ]
Zeng, Jinghai [1 ]
Qi, Hongyan [1 ]
Zhuang, Guoqiang [1 ]
机构：
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL SCIENCES | 2011年 / 23卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Bacillus cereus; biosensor; biosorption; crystal; isotherms; kinetics; silver; EQUILIBRIUM; KINETICS;
D O I：
10.1016/S1001-0742(10)60380-4
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 silver ions onto Bacillus cereus biomass was investigated. Overall kinetic experiments were performed for the determination of the necessary contact time for the attainment of equilibrium. It was found that the overall biosorption process was best described by pseudo second-order kinetic model. The crystals detected by scanning electron microscope and X-ray photoelectron spectroscopy suggested the precipitation was a possible mechanism of biosorption. The molecular genetics of silver resistance of B. cereus biomass was also detected and illustrated by a whole cell sensor tool.
引用
收藏
页码：108 / 111
页数：4
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