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自然水体细菌胞外有机组分吸附Pb2+的规律
引用本文:苏春彦,康春莉,董德明.自然水体细菌胞外有机组分吸附Pb2+的规律[J].吉林工学院学报,2005,26(4):262-264.
作者姓名:苏春彦  康春莉  董德明
作者单位:[1]长春工业大学化学工程学院,吉林长春130012 [2]吉林大学环境与资源学院,吉林长春130026
基金项目:国家自然科学基金资助项目(20077011);吉林大学创新基金资助项目(450011022018).
摘    要:研究了长春南湖水体细菌胞外聚合物中的有机组分胞外蛋白和胞外多糖对Pb^2+吸附特征及其影响因素。结果表明,Pb^2+在有机组分上的吸附均符合Freundich和Langmuir热力学方程。而Cd^2+的存在会影响有机组分对Pb^2+的吸附。通过红外光谱分析研究了胞外有机组分吸附Pb^2+的机理。

关 键 词:细菌  胞外多糖  胞外蛋白  吸附  铅离子
文章编号:1006-2939(2005)04-0262-03
收稿时间:2005-05-11
修稿时间:2005年5月11日

The adsorption of Pb2+ by organic components of bacteria in natural water
SU Chun-yan, KANG Chun-li, DONG De-ruing.The adsorption of Pb2+ by organic components of bacteria in natural water[J].Journal of Jilin Institute of Technology,2005,26(4):262-264.
Authors:SU Chun-yan  KANG Chun-li  DONG De-ruing
Institution:1. School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China; 2. College of Environment and Resources, Jilin University, Changchun 130026, China
Abstract:The adsorption of Pb~(2+) on the organic components(exopolysaccharide and extracellular(protein)) of bacteria in natural water and the effects of adsorption time,temperature and initial pH were investigated.The results show that both Langmuir and Freundlich isotherm equations can (describe) the thermodynamic adsorption processes of Pb~(2+) on the organic components.The existence of Cd~(2+) affects the adsorption of Pb~(2+).The acetylamino group and amino-group of protein,and the(hydroxyl) group of exopolysaccharide are the functional groups.
Keywords:bacteria  exopolysaccharide  extracellular protein  adsorption  lead
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