| Nitrate adsorption using poly (dimethyl diallyl ammonium chloride)/polyacrylamide hydrogel | |
| Department | 环境材料与生态化学研究发展中心 |
Zheng YA(郑易安) ; Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
| |
| 2010 | |
| Source Publication | Journal of Chemical & Engineering Data
 |
| ISSN | 0021-9568 |
| Volume | 55Issue:9Pages:3494-3500 |
| Abstract | 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. |
| Subject Area | 功能高分子 |
| Funding Organization | 江苏省科技厅项目(BS2007118,BE2008087) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/124 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | 王爱勤 aqwang@licp.cas.cn |
| Recommended Citation GB/T 7714 | Zheng YA,Wang AQ,王爱勤 aqwang@licp.cas.cn. 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,&王爱勤 aqwang@licp.cas.cn.(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. |
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| 201055934943500.pdf（224KB） | 开放获取 | License | View Application Full Text | |||
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