生物膜及其组分对4-氯酚的吸附速率研究  

STUDY ON p-CHLOROPHENOL ADSORPTION RATE BY BIOFILMAND ITS COMPONENTS

作　　者：王文军[1] 张学林[1] 王文华[2] 王东红[2] 

机构地区：[1]中国科学院长春地理研究所,长春130021 [2]中国科学院生态环境研究中心,环境水化学国家重点实验室,北京100085

出　　处：《环境化学》2001年第4期338-343,共6页Environmental Chemistry

基　　金：国家自然科学基金资助项目[编号29777027];中国科学院水生生物研究所淡水生态与生物技术国家重点实验室开放基金资助;中国科学院长春地理研究所湿地过程与环境开放实验室基金资助

摘　　要：研究了４－氯酚在生物膜不同组分上的吸附速率特征．本实验中生物膜不同组分包括生长有生物膜外壳的模拟水体悬浮颗粒物(高岭土)、细菌细胞、胞外多糖、高岭土及有胞外多糖存在的高岭土５个部分．结果表明,生物膜及其不同组分均对４－氯酚发生吸附,以细菌细胞更为显著,但它们的时间动力学过程不同． 在所研究的５种吸附体系中,生长有生物膜外壳的高岭上体系较快地达到近平衡状态．并且吸附时间过程受ｐＨ值的影响．Through batch equilibrium experiments, the kinetic characteristics of p-chlorophenol (4-CP) compound adsorption by biofilm components were investigated. In the experiments, biofilm compo-nents included modeling water particulate (kaolin) with biofilm coating, bacterial cell, exo-polysaccharide, kaolin and kaolin with exopolysaccharide. It showed all the biofilm components could adsorb p-chlorophenol, but 4-CP adsorption by bacteria cells was significant in the adsorption processes. And their time kinetic processes were different. In those five adsorption systems, the system of kaolin with biofilm coating became equilibrium more quickly than the others. The adsorp-tion time processes were affected by pH values.

关 键 词：生物膜 高岭土 细菌 胞外多糖 4-氯酚 吸附 水污染 膜分离 

分 类 号：O647.3[理学—物理化学]