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Cu^2+保持高的吸附率,在pH为4.0时对Cd^2+的吸附率达到最大.随着Cu^2+,Cd^2+金属离子初始浓度的降低,吸附率有所降低.对Cd^2+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Cu^2+,Cd^2+的吸附率逐渐升高,与此相反,对Cu^2+,Cd^2+的吸附量则逐渐减小.粒径对Cu^2+的吸附率影响较小,对Cd^2+的吸附率有较明显的变化.
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 Cu^2+ is high during the wide pH range of 3.0-5.0;for Cd^2+ ,the pH range is narrow, its adsorption efficiency reaches the maximum when pH=4.0. The efficiency of Cu^2+ and Cd^2+ decreases as the initial concentration of Cu^2+ and Cd^2+ decreases. The adsorption efficiency of Cd^2+ increases as the temperature rises. The adsorption rate increases gradually as the concentration of the sorbents increases. In contrast, the uptake of Cu^2+ and Cd^2+decreases gradually. The particle size little influences on the adsorption efficiency of Cd^2+, but influence on of Cu^2+ is significant.
出处
《海洋学报》
CAS
CSCD
北大核心
2006年第1期62-66,共5页
关键词
固定化
海藻吸附
金属离子
immobilization
marine alage adsorption
metal ions