Radiation synthesis and Cr(VI) removal of cellulose microsphere   adsorbent

doi:10.1016/j.carbpol.2012.01.040

CORC > 北京大学 > 化学与分子工程学院

	Radiation synthesis and Cr(VI) removal of cellulose microsphere adsorbent
	Zhang, Youwei ; Xu, Ling ; Zhao, Long ; Peng, Jing ; Li, Cancan ; Li, Jiuqiang ; Zhai, Maolin
刊名	碳水化合物聚合物
	2012
关键词	Cellulose microsphere Radiation grafting Styrene Adsorbent Cr(VI) HEAVY-METAL ION AQUEOUS-SOLUTION FUNGAL BIOMASS WASTE-WATER ADSORPTION CHROMIUM STYRENE MEMBRANE COPPER
DOI	10.1016/j.carbpol.2012.01.040
英文摘要	A novel cellulose-based adsorbent was prepared by radiation-induced grafting of styrene onto the surface of cellulose microspheres, followed by acetylation and amination processes. The grafting yield was adjusted by the total absorbed dose, dose rate and the concentration of styrene. The structure of the adsorbent was characterized by micro-FTIR, XPS and SEM. The adsorption of Cr(VI) ions has been investigated as a function of contact time, adsorbent feed, pH, Cr(VI) and NaCl concentration. It was found that adsorption equilibrium could be achieved within 30 min for initial Cr(VI) of 100 mg L-1. The adsorption kinetics was well described by the pseudo-second order model equation, and the adsorption isotherm was better fitted by the Langmuir mode. The maximum theoretical Cr(VI) uptake of the adsorbent was 123.4 mg g(-1). The influence of NaCl concentration on Cr(VI) uptake and XPS analysis revealed that Cr(VI) ions were adsorbed through ion-exchange mechanism. (C) 2012 Elsevier Ltd. All rights reserved.; Chemistry, Applied; Chemistry, Organic; Polymer Science; SCI(E); EI; 10; ARTICLE; 3; 931-938; 88
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150964]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Zhang, Youwei,Xu, Ling,Zhao, Long,et al. Radiation synthesis and Cr(VI) removal of cellulose microsphere adsorbent[J]. 碳水化合物聚合物,2012.
APA	Zhang, Youwei.,Xu, Ling.,Zhao, Long.,Peng, Jing.,Li, Cancan.,...&Zhai, Maolin.(2012).Radiation synthesis and Cr(VI) removal of cellulose microsphere adsorbent.碳水化合物聚合物.
MLA	Zhang, Youwei,et al."Radiation synthesis and Cr(VI) removal of cellulose microsphere adsorbent".碳水化合物聚合物 (2012).