Preparation and application of Aliquat 336 functionalized chitosan adsorbent for the removal of Pb(II)
详细信息 查看全文
- 作者：Hongmin Cui ; Ji Chen ; Hualing Yang ; Wei Wang ; Yu Liu ; Dan Zou ; Wengang Liu ; Guangping Men
- 关键词：Chitosan-derived adsorbent ; Pb(II) ; Removal ; Waste water
- 刊名：Chemical Engineering Journal
- 出版年：2013
- 出版时间：October, 2013
- 年：2013
- 卷：232
- 期：Complete
- 页码：372-379
- 全文大小：1252 K
文摘
We report here the rational design and the preparation of chitosan-derived adsorbent, trioctylmethyl ammonium carboxymethylated chitosan ([A336][CMCTS]) for the removal of Pb(II) from aqueous solutions. The adsorbent fabricates as such represents a rational approach to enhance the adsorption capabilities, as well as avoid the agglomerate of chitosan effectively. Through a series of carefully executed experiments, we discover that both the cations and anions parts contribute to the adsorption of Pb(II), thus propose an interesting ion-associated complex adsorption mechanism. The as-prepared [A336][CMCTS] displays excellent adsorption capabilities, has a adsorption capacity of 143.3 mg g?1. 97.71 % of Pb(II) in real waste water can be removed. This new design strategy and adsorption mechanism broadens the studies in this field and gives deep insight into Pb(II) adsorption behaviors. The as-prepared adsorbents are expected to be used for the removal of other heavy metal ions.