自然水体生物膜优势菌种胞外聚合物对Pb^(2+)和Cd^(2+)的吸附规律  

Adsorption of Pb^(2+) and Cd^(2+) by the Extracelluar Polymeric Substances of Dominant Bacterium of Surface Coatings in Natural Water

作　　者：康春莉[1] 高红杰[1] 隋海清[1] 郭平[1] 赵宇侠[1] 董德明[1] 

机构地区：[1]吉林大学环境与资源学院环境科学系,长春130012

出　　处：《环境保护科学》2007年第5期13-16,共4页Environmental Protection Science

基　　金：国家自然科学基金(20077011);吉林大学创新基金(450011022018)

摘　　要：研究了长春南湖水生物膜上优势菌种的胞外聚合物对金属Pb2+和Cd2+的吸附规律及影响吸附的因素。结果表明,两种金属在胞外聚合物上的吸附均遵守Langmuir和Freundlich热力学方程。当Pb2+和Cd2+共存时,两种金属的吸附量均减小。The extracelluar polymeric substances of dominant bacterium of the surface coatings in the Nanhu Lake（Changchun） were used to study the adsorption rules of Pb^2＋ and Cd^2＋ and the influence factors . Results show that the course of adsorption of the two metals on the extracelluar polymeric substances complies with both the Langrnuir and Freun-dlich thermodynamics equations. The adsorption amount of each metal is decreased when Pb^2＋ and Cd^2＋ coexisted.

关 键 词：胞外聚合物 优势菌种 吸附 重金属 

分 类 号：X172[环境科学与工程—环境科学]