title: Resistance and biosorption mechanism of silver ions by Bacillus cereus biomass.
abstract: 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.
authors.affiliation: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. lilicaimu2007@sina.com
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Qing
authors.initials: Q
authors.lastname: Hu
authors.forename: Jinghai
authors.initials: J
authors.lastname: Zeng
authors.forename: Hongyan
authors.initials: H
authors.lastname: Qi
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Zhuang
mesh_terms: D000327:Adsorption; D001409:Bacillus cereus / Q000235:genetics / Q000378:metabolism*; D001673:Biodegradation, Environmental; D018533:Biomass; D015374:Biosensing Techniques; D005798:Genes, Bacterial / Q000235:genetics; D007477:Ions; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D056951:Photoelectron Spectroscopy; D016133:Polymerase Chain Reaction; D012834:Silver / Q000378:metabolism*
chemical_list: D007477:Ions; D012834:Silver