壳聚糖对废水中Ni^(2+)吸附的动力学研究  

Study on kinetics of the adsorption of nickel ion from wastewater by chitosan

作　　者：尚秀丽[1] 夏德强[1] 索陇宁[1] 本连芳 

机构地区：[1]兰州石化职业技术学院,甘肃兰州730060

出　　处：《中国建材科技》2015年第5期57-59,共3页China Building Materials Science & Technology

基　　金：甘科技支撑计划(144GKCA035);兰州石化职业技术学院资助项目(JY2014-17)

摘　　要：采用静态吸附法研究了壳聚糖对废水中镍离子的吸附性能。考察了吸附剂用量、时间、温度对镍离子吸附率的影响,结果表明:壳聚糖对废水中镍离子的吸附在60min达到平衡,其动力学行为更好的符合准二级动力学模型,吸附过程是一个放热过程,随着温度的升高,镍离子的吸附率增大。Adsorption properties of chitosan for nickel ion was investigted using static adsorption method. The effects of amount of absorbent,time and temperature on nickel ion adsorption rate were investigated. The results showed that the adsorption capacity of chitosan for nickel ion in wastewater was reached to balance at 60 min. The kinetics of the interactions showed better agreement with the pseudo second-order kinetics. The adsorption of nickel ion onto chitosan is exothermic,the adsorption rate increased with the increase of temperature.

关 键 词：壳聚糖 镍 吸附 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]