紫菜吸附铜、锌离子的研究  

INVESTIGATION OF Cu^(2+) AND Zn^(2+) BIOSORPTION ON LAVER

作　　者：常秀莲[1] 冯咏梅[1] 王文华[1] 郑舒文[1] 

机构地区：[1]山东烟台大学化学生物理工学院,山东烟台264005

出　　处：《水处理技术》2004年第6期338-340,共3页Technology of Water Treatment

基　　金：山东省教育厅资助(J01C12)

摘　　要：本文采用紫菜作为吸附剂吸附溶液中Cu^(2+)和Zn^(2+)。结果表明，紫菜对Cu^(2+)的吸附性能大大优于zn^(2+)，对Cu^(2+)的吸附2min就近乎达到平衡，适宜的pH为4-6，对Zn^(2+)需要2h才能达到平衡，适宜的pH为3-6。初始浓度即使高达30mmol／L时，Cu^(2+)的吸附率仍在90％以上，吸附量高达13.9mmol/g，而Zn^(2+)的吸附率只有12％，吸附量只有1.7mmol／g，紫菜对Cu^(2+)、Zn^(2+)的吸附等温线用Langmuir方程均能得到较好的表达。In this paper, Laver was used as biosorbent for the adsorption of Cu^(2+) and Zn^(2+) in aqueous solution. The results show that the adsorption characteristics of Cu^(2+) on Laver is more superior than that of Zn^(2+), such as having a rapid adsorption rate with approximately only 2 minutes to achieve equilibrium while about 120 minutes for Zn^(2+) adsorption and a higher adsorption capacity of 13. 9mmol/g and more than 90% adsorption ratio for Cu^(2+) adsorption while only 12% adsorption ratio for Zn^(2+) adsorption at a high initial concentration up to 30 mmol/L, Langmuir equations can model Cu^(2+) adsorption and Zn^(2+) adsorption both well.

关 键 词：CU^2+ 吸附率 ZN^2+ 初始浓度 吸附量 锌离子 吸附剂 紫菜 LANGMUIR方程 平衡 

分 类 号：P681.130[天文地球—地质学] S968[农业科学—水产养殖]