徐州工程学院学报：自然科学版2011，Vol.26Issue(2)：54-57,4.
曝气池活性污泥胞外聚合物对Pb~（2＋）和Zn~（2＋）的吸附研究
Adsorption of Pb~（2＋） and Zn~（2＋） in Water by Extracelluar Polymeric Substances from Activated Sludge in Aeration Pool
摘要
Abstract
Extracelluar polymeric substances,extracted from activated sludge in aeration pool,were used as biosorbent.Adsorption ability of EPS for Pb2＋ and Zn2＋ removal under different experimental conditions was studied.This paper focuses on the influences of adsorption time,pH value,dosage of extracelluar polymeric substances,and coexistence of Pb2＋、Zn2＋.The results show that the adsorption equilibrium will be reached at respectively 30 min and 60 min for Pb2＋、Zn2＋,and that with the rise of pH value the removal rate will first rise then fall,and when the pH value is 6,EPS dosage is 371.67 mg/L and 123.89 mg/L,the maximum removal rate for Pb2＋ and Zn2＋ can reach to 52.17% and 39.83%,and that when Pb2＋、Zn2＋ coexist,the removal rate of EPS on Pb2＋、Zn2＋ will be decreased,and the EPS＇s selective adsorption of Pb2＋ is stronger than that of Zn2＋.关键词
活性污泥/胞外聚合物/吸附/Pb2＋/Zn2＋Key words
activated sludge/extracelluar polymeric substances/absorption/lead ion/zinc ion分类
资源环境引用本文复制引用
曾艳,唐琳,张明青,张鹏,邵淋飞..曝气池活性污泥胞外聚合物对Pb~（2＋）和Zn~（2＋）的吸附研究[J].徐州工程学院学报：自然科学版,2011,26(2):54-57,4.基金项目
中国矿业大学科技基金项目 （）
