Nitrate adsorption using poly (dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	Nitrate adsorption using poly (dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel
	Zheng YA(郑易安); Wang AQ(王爱勤)
刊名	Journal of Chemical & Engineering Data
	2010
卷号	55 期号:9 页码:3494-3500
ISSN号	0021-9568
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	In this study, poly(dimethyl diallyl ammonium chloride)/polyacrylamide (PDMDAAC/PAM), a hydrogel containing quaternary ammonium groups, was prepared and used as the adsorbent to remove the nitrate anion from aqueous solution. The effects of operating conditions, such as PDMDAAC content, contact time, pH, initial nitrate concentration, temperature, ion strength, and the presence of the competitive ion phosphate on the adsorption capacities were examined. The Langmuir, Freundlich, and Redlich-Peterson isotherms were used to describe the adsorption experimental data. The results indicate that the adsorption equilibrium can be achieved within 60 min, and the hydrogel has an increasing adsorption capacity with increasing PDMDAAC content up to 50 % (by weight). As-prepared hydrogel shows an appreciable adsorption capacity within the pH range of 5 to 9, and the calculated maximum adsorption capacity is found to be (1.1 to 1.4) mmol · g-1. The hydrogel with higher PDMDAAC content is sensitive to the changes in the ion strength and competitive anion concentration. Effective desorption of nitrate is achieved using strong acid or base as the desorbing agent. It is proposed that two mechanisms are responsible for the higher adsorption capacity: one is swelling, and the other is electrostatic attraction.
学科主题	功能高分子
收录类别	SCI
资助信息	江苏省科技厅项目(BS2007118,BE2008087)
语种	英语
公开日期	2012-09-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/124]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
推荐引用方式 GB/T 7714	Zheng YA,Wang AQ. Nitrate adsorption using poly (dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel[J]. Journal of Chemical & Engineering Data,2010,55(9):3494-3500.
APA	郑易安,&王爱勤.(2010).Nitrate adsorption using poly (dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel.Journal of Chemical & Engineering Data,55(9),3494-3500.
MLA	郑易安,et al."Nitrate adsorption using poly (dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel".Journal of Chemical & Engineering Data 55.9(2010):3494-3500.