Hg(II) adsorption by Bacillus mucilaginosus: mechanism and equilibrium parameters

	Hg(II) adsorption by Bacillus mucilaginosus: mechanism and equilibrium parameters
	Bin-Bin Mo; Bin Lian
	2011
发表期刊	World Journal of Microbiology & Biotechnology
卷号	27 期号:5 页码:1063-1070
摘要	Our previous findings have indicated that Bacillus mucilaginosus might be a promising biosorbent. However, up to now, few studies have been performed to examine the use of B. mucilaginosus as a sorbent, especially as a sorbent for Hg(II). The aim of the current study was to investigate the adsorption of Hg(II) by B. mucilaginosus and the underlying mechanism involved. The results showed that B. mucilaginosus exhibited effective adsorption of Hg(II), and the experimental data were well fitted by the Langmuir model with equilibrium constant of 3.3202×0210 4 02M 611 and maximum adsorption capacity of 39302mg(Hg)/l(bacterial culture). The average saturated adsorption amount of Hg(II) by each cell was 9.8302×0210 9 atoms, with time to reach adsorption equilibrium less than 1002min. The adsorption efficiency was mainly dependent on pH. Surface adsorption of capsules was identified to be the major mechanism for the biosorption of Hg(II) by B. mucilaginosus , which might be associated with the cell products on the surface of capsules of B. mucilaginosus . Differences observed in adsorption behaviors at different concentrations of Hg(II) were well explained using the Visual minTEQ software. Our findings might shed some lights on the application of B. mucilaginosus as an adsorbent for Hg(II) and other heavy。
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/7004
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Bin-Bin Mo,Bin Lian. Hg(II) adsorption by Bacillus mucilaginosus: mechanism and equilibrium parameters[J]. World Journal of Microbiology & Biotechnology,2011,27(5):1063-1070.
APA	Bin-Bin Mo,&Bin Lian.(2011).Hg(II) adsorption by Bacillus mucilaginosus: mechanism and equilibrium parameters.World Journal of Microbiology & Biotechnology,27(5),1063-1070.
MLA	Bin-Bin Mo,et al."Hg(II) adsorption by Bacillus mucilaginosus: mechanism and equilibrium parameters".World Journal of Microbiology & Biotechnology 27.5(2011):1063-1070.

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