乙二胺改性壳聚糖对Cu(Ⅱ)的吸附  

Adsorption of Cu(Ⅱ) on Ethylenediamine-modified Chitosan

作　　者：葛华才[1] 王森康[1] 刘维[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《广东化工》2012年第13期181-182,共2页Guangdong Chemical Industry

基　　金：国家自然科学基金资助项目(21077034和50673027)

摘　　要：采用氨基保护法在微波辐射下制备了乙二胺改性壳聚糖吸附剂(ECTS),研究了该吸附剂对Cu2+吸附的影响因素。结果表明,吸附最佳pH为5。吸附遵循拟二级动力学和化学吸附为主的单分子层机理。吸附等温线服从Langmuir等温式。吸附剂的吸附量比壳聚糖高,吸附剂能再生。因此可用于含Cu2+酸性废水的去除或富集。Ethylenediamine-modified chitosan sorbent（ECTS） was prepared by the amine-protected method under microwave irradiation.The effects of some variables on the adsorption of Cu2＋ by ECTS were studied.The results showed that the maximum adsorption capacity was found at pH5.The adsorption process followed the pseudo-second-order kinetics and the monolayer coverage of adsorbent through chemical adsorption.The adsorption isotherm was well described by Langmuir isotherm.The sorbent had higher capacity than chitosan.The adsorbent can be recycled.Therefore,the ECTS is an effective sorbent for the removal or collect of Cu2＋from acidic effluents.

关 键 词：壳聚糖 乙二胺 微波辐射 Cu(Ⅱ) 吸附 

分 类 号：TQ028.3[化学工程] X703[环境科学与工程—环境工程]