| Hg(II) adsorption by Bacillus mucilaginosus: mechanism and equilibrium parameters |
| Bin-Bin Mo; Bin Lian
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| 2011
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发表期刊 | World Journal of Microbiology & Biotechnology
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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
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收录类别 | SCI
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语种 | 英语
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文献类型 | 期刊论文
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条目标识符 | http://ir.gyig.ac.cn/handle/352002/7004
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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
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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.
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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.
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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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文件名:
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Hg(II) adsorption by Bacillus mucilaginosus.pdf
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Adobe PDF
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