叉鞭金藻对微量锌、镉的吸附效应研究  

The adsorption of trace Zn^(2+) and Cd^(2+) on the \%Dicrateria sp.

作　　者：李英敏[1] 杨海波[1] 吕福荣[1] 张欣华[1] 刘艳[1] 于媛[1] 

机构地区：[1]大连大学化学与化学工程系,辽宁大连116622

出　　处：《环境污染与防治》2004年第5期396-398,共3页Environmental Pollution & Control

基　　金：辽宁省博士启动基金资助项目的部分内容 ( No.0 0 10 5 9)

摘　　要：研究了叉鞭金藻对微量 Zn2 +、Cd2 +的生物吸附及其机理。结果表明 ,叉鞭金藻对 Zn2 +、Cd2 +的生物吸附主要经历了快速的吸附和缓慢的吸附两个步骤。 p H为 6～ 7时 ,叉鞭金藻对 Zn2 + 、Cd2 + 有较好的吸附作用 ,且死体藻细胞比活体藻细胞能富集更多的 Zn2 +、Cd2 +。吸附符合 Freundlich等温吸附模型。The biosorption of trace Cd^(2+), Zn^(2+) with \%Dicrateria sp.\% and its mechanism were studied. It was found that the adsorption of Zn^(2+), Cd^(2+) on \%Dicrateria sp.\% involved two steps: rapid adsorption and slow adsorption, and the suitable pH was between 6 and 7. The study also proved that the dead cells could accumulate more Zn^(2+), Cd^(2+) than the live cells and the adsorption fitted Freundlich isotherms very well.\;

关 键 词：叉鞭金藻 CD^2+ 生物吸附 微量锌 ZN^2+ 藻细胞 吸附作用 活体 等温吸附 快速 

分 类 号：X173[环境科学与工程—环境科学]