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Vol. 25 No. 4 (2013): Vol 25 Issue 4

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Study on Adsorption Characteristics of Cr(VI) on Poly(N,N'-dimethylamino ethyl methacrylate) Hydrogels

https://doi.org/10.14233/ajchem.2013.AB105
Weixia Zhu
Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P.R. China
Chang Yang
Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P.R. China
Hang Song
Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P.R. China
Quanyi Wang
Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P.R. China
Kaifeng Du
Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P.R. China

Corresponding Author(s) : Kaifeng Du

kfdu@scu.edu.cn

Asian Journal of Chemistry, Vol. 25 No. 4 (2013): Vol 25 Issue 4

Abstract

Poly(N,N'-dimethylamino ethyl methacrylate) [poly(DMAEMA)] hydrogel was synthesized and the adsorption characteristics of Cr(VI) ions on it were evaluated. A series of static adsorption experiments with Cr(VI) were carried out at different mass of cross-linker, temperature, pH and concentration of Cr(VI). It was found that the optimum pH was 2 and the maximum adsorption amount of Cr(VI) were up to 116 mg/g. The results of the adsorption kinetics and isotherms indicated the adsorption date were well fitted with the preudo-second order model and Langmuir model, respectively. The desorption experiments showed that more than 97.4 % Cr(VI) can be desorbed by NaOH (pH = 10). The present study proved that the poly(DMAEMA) gel was an excellent potential Cr(VI) adsorbent.

Keywords

Cr(VI) Static adsorption Poly(N,N'-dimethylamino ethyl methacrylate) Desorption
Zhu, W., Yang, C., Song, H., Wang, Q., & Du, K. (2012). Study on Adsorption Characteristics of Cr(VI) on Poly(N,N’-dimethylamino ethyl methacrylate) Hydrogels. Asian Journal of Chemistry, 25(4), 2293–2296. https://doi.org/10.14233/ajchem.2013.AB105
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