Modification of Cellulosic Fibers and Adsorption of Chromium (VI) Ion from Dilute Aqueous Solution

被引：0
|
作者：
Xu, Zhen [1 ]
Liu, Wei [1 ]
Kong, Fangong [1 ]
Wang, Shoujuan [1 ]
Chen, Honglei [1 ]
机构：
[1] Qilu Univ Technol, Educ Minist China, Key Lab Pulp & Paper Sci & Technol, Jinan 250353, Peoples R China
来源：
FRONTIERS OF MANUFACTURING AND DESIGN SCIENCE IV, PTS 1-5 | 2014年 / 496-500卷
关键词：
hexavalent chromium ions; fiber grafting reaction; chromium ion adsorption; REMOVAL;
D O I：
10.4028/www.scientific.net/AMM.496-500.183
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The removal of Cr(VI) from aqueous solution is paying more and more attention due to the higher concern of environmental influence of this ion. In this paper, the biodegradable cellulosic fibers were modified with the grafting reaction to introduce the amide groups onto the fibers. In the grafting reaction, the toluene diisocyanate was firstly grafted on the surface of natural fibers, and then the 3-Chloro-2-hydroxypropyltrimethylammonium chloride(HPTMAC), as a high efficiency trapping agent of Cr(VI), was introduced through the condensation reaction. The modified fibers was characterized by infrared spectroscopy (IR) and elemental analysis. The modified fibers were applied to adsorb chromium (VI) ion from aqueous solution. The adsorption capability of the modified fibers was evaluated under different pH, time and temperature. The optimal adsorption conditions were obtained. The results showed that the grafted fibers had high efficient adsorption of chromium (VI) ion.
引用
收藏
页码：183 / 186
页数：4
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