固定化海藻吸附金属离子的影响因素

王宪; 邱海源; 钱爱红; 陈丽丹; 郑盛华

固定化海藻吸附金属离子的影响因素

厦门大学海洋与环境学院, 福建厦门 361005

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出版历程
- 收稿日期: 2005-01-16
- 修回日期: 2005-08-20

The influencing factors of the adsorption of metal ions by immobilized marine alage

College of Oceanogrophy and Environmental Science, Xiamen University, Xiamen 361005, China

摘要

摘要: 研究了固定化海带吸附含铜、镉溶液过程的影响因素,结果表明,在pH为3.0~5.0时对Cu²⁺保持高的吸附率,在pH为4.0时对Cd²⁺的吸附率达到最大.随着Cu²⁺,Cd²⁺金属离子初始浓度的降低,吸附率有所降低.对Cd²⁺的吸附率均随着温度的升高而变大.随着吸附剂浓度的增大,对Cu²⁺,Cd²⁺的吸附率逐渐升高,与此相反,对Cu²⁺,Cd²⁺的吸附量则逐渐减小.粒径对Cu²⁺的吸附率影响较小,对Cd²⁺的吸附率有较明显的变化.
- 固定化 /
- 海藻吸附 /
- 金属离子
Abstract: The influencing factors of the adsorption of metal ions by immobilized marine alage were investigated.It can be concluded from the experimental results that,the adsorption efficiency of Cu²⁺ is high during the wide pH range of 30~50;for Cd²⁺,the pH range is narrow,its adsorption efficiency reaches the maximum when pH=4.0.The efficiency of Cu²⁺ and Cd²⁺ decreases as the initial concent ration of Cu²⁺ and Cd²⁺ decreases.The adsorption efficiency of Cd²⁺ increases as the temperature rises.The adsorptionrate increases gradually as the concent ration of the sorbents increases.In contrast,the uptake of Cu²⁺ and Cd²⁺ decreases gradually.The particle size little influences on the adso rption efficiency of Cd²⁺,but influence on of Cu²⁺ is significant.
- immobilization /
- marine alage adsorption /
- metalions

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