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	Nitrate adsorption using poly(dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel
	Zheng, Yian1,2; Wang, Aiqin1
刊名	Journal of chemical and engineering data
	2010-09-01
卷号	55期号:9页码:3494-3500
ISSN号	0021-9568
DOI	10.1021/je100169r
通讯作者	Wang, aiqin(aqwang@licp.cas.cn)
英文摘要	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.
WOS关键词	AQUEOUS-SOLUTION ; WASTE-WATER ; REMOVAL ; PHOSPHATE ; CHITOSAN ; IONS ; ELECTRODIALYSIS ; NANOCOMPOSITES ; NITROGEN ; ZEOLITE
WOS研究方向	Chemistry ; Engineering
WOS类目	Chemistry, Multidisciplinary ; Engineering, Chemical
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000281567000094
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2411194
专题	中国科学院大学
通讯作者	Wang, Aiqin
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Yian,Wang, Aiqin. Nitrate adsorption using poly(dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel[J]. Journal of chemical and engineering data,2010,55(9):3494-3500.
APA	Zheng, Yian,&Wang, Aiqin.(2010).Nitrate adsorption using poly(dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel.Journal of chemical and engineering data,55(9),3494-3500.
MLA	Zheng, Yian,et al."Nitrate adsorption using poly(dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel".Journal of chemical and engineering data 55.9(2010):3494-3500.

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