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	Zn~(2+)和Cd~(2+)在酿酒酵母上的生物吸附平衡
	郜瑞莹 ; 王建龙 ; GAO Rui-ying ; WANG Jian-long
	2010-06-04 ; 2010-06-04
关键词	Zn~(2+) Cd~(2+) 酿酒酵母 生物吸附 重金属 吸附平衡 吸附等温线 zinc cadmuim Saccharomyces cerevisia biosorption heavy metal equilibrium isotherm. X703
其他题名	BIOSORPTION EQUILIBRIUM OF Zn~(2+) AND Cd~(2+) ONTO WASTE BIOMASS OF SACCHAROMYCES CEREVISIA
中文摘要	研究了金属离子Zn2+和Cd2+在酿酒酵母上的生物吸附平衡。吸附等温线表明,Zn2+和Cd2+在酵母上的吸附可以用Langmuir方程来描述,Zn2+的最大吸附量qmax为9.66mg/g(0.148mmol/g),Cd2+的最大吸附量qmax为15.36mg/g(0.137mmol/g)。当q以mg/g为单位时,两者在酵母上的吸附量大小顺序为Cd2+>Zn2+。与Cd2+比较,Zn2+在酵母上的吸附力更强,更容易被酵母吸附。酵母作为生物吸附剂可用于处理含Zn2+和Cd2+的废水,适合用于溶液中低浓度Zn2+和Cd2+的去除。; The biosorption of Zn2+ and Cd2+ onto the waste biomass of brewery (Saccharomyces cerevisia) was investigated. In particular, the comparative analysis on equilibrium sorption of metal ions was made. The experimental results indicated that the biosorption of Zn2+ and Cd2+ could reach equilibrium very quickly, and the sorption process could be described by Langmuir isotherm model. The maximum sorption capacity (qmax) of Zn2+ and Cd2+ was 9.66mg/g and 15.36mg/g, respectively. When qmax was expressed in the unit of mg/g, the qmax was in the following order: Cd2+>Zn2+. In comparison with Cd2+, biosorption of Zn2+onto the cells of Saccharomyces cerevisia is easier. The removal of Cu2+ and Cd2+ from wastewater by using waste biomass of Saccharomyces cerevisia as biosorbent is feasible.; 国家自然科学基金项目(50278045); 清华大学基础研究基金资助项目(JC2002054)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/36080]
专题	清华大学
推荐引用方式 GB/T 7714	郜瑞莹,王建龙,GAO Rui-ying,等. Zn~(2+)和Cd~(2+)在酿酒酵母上的生物吸附平衡[J],2010, 2010.
APA	郜瑞莹,王建龙,GAO Rui-ying,&WANG Jian-long.(2010).Zn~(2+)和Cd~(2+)在酿酒酵母上的生物吸附平衡..
MLA	郜瑞莹,et al."Zn~(2+)和Cd~(2+)在酿酒酵母上的生物吸附平衡".(2010).

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