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论文题目: A facile approach for surface alteration of Pseudomonas putida I3 by supplying K2SO4 into growth medium: Enhanced removal of Pb(II) from aqueous solution
英文论文题目: A facile approach for surface alteration of Pseudomonas putida I3 by supplying K2SO4 into growth medium: Enhanced removal of Pb(II) from aqueous solution
第一作者: 徐兴健
英文第一作者: Xu, X. J.
联系作者: 于洪文
英文联系作者: Yu, H. W.
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发表年度: 2017
卷: 232
期:
页码: 79-86
摘要:

A new sight of obtaining a high efficient biosorbent by supplying specific salts into bacterial growth medium was investigated in this study for Pb(II). Among a series of salts including Na2SO4, Na2S2O3, KCl, and K2SO4, the highest Pb(II) removal efficiency was observed by psychrotrophilic Pseudomonas putida I3 grown in the presence of 30 g/L K2SO4 (KSI3-30) with biosorption capacity of 62.89 mg/g under cold condition (15 degrees C), which was increased by 42.35% as compared to control (without any additive, RI3). This stimulation effect was ascribed to the increase of potassium and sulfur containing groups on KSI3-30 surface via metabolic dependent ways. The probable mechanism for Pb(II) adsorption was ion-exchange and chemical complexation. The thermal and kinetic data well fitted to Langmuir adsorption model and pseudo-second order and intraparticle diffusion kinetic model. Good recyclability and effectively dealing with real wastewater suggested KSI3-30 was a promising biosorbent for Pb-contaminated wastewater treatment. (C) 2017 Elsevier Ltd. All rights reserved.

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刊物名称: Bioresource Technology
英文刊物名称: Bioresource Technology
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