摘要
制备了一种新型的离子交换纤维RPFA-I,用于去除水体中亚砷酸根离子的研究.在研究的范围内,Fre-undlich型吸附等温方程能够很好地描述等温吸附平衡数据;吸附动力学数据符合Lagergren二级速度方程;pH=6.22时,吸附量达到最大;用0.1mol/L的NaOH溶液可以实现纤维的再生,再生性能优良.
A new type of ion-exchange fiber RPFA-I was prepared and used to remove aqueous arsenite ion. A batch sorption experiments showed that Freundlich equation can simulate well the isothermal adsorption equilibrium data of arsenite ion in the researched concentration range. Sorption kinetic data can be described by the Lagergren pseudo-second order rate equation. The removal of arsenite by the fiber reached a maximum in pH value 6.22. The fiber can be regenerated by diluted NaOH solution efficiently.
出处
《化学研究》
CAS
2007年第4期48-51,共4页
Chemical Research
基金
河南省外国专家局引智重点项目(L20064100026)
关键词
离子交换纤维
亚砷酸
吸附
再生
ion-exchange fiber
arsenite
adsorption
regeneration
