| Characterization of nitrate ions adsorption and diffusion in P（DMAEMA/HEMA） hydrogels |
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| 作者姓名： | Yun Tian |
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| 作者单位： | College of Science, Tianjin University, Tianjin 300072, China |
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| 摘 要： | In this work, the adsorption and diffusion behavior of nitrate ions into polycationic P（DMAEMA/HEMA） hydrogels is analyzed. Experimental results indicated that nitrate ions can be removed efficiently from aqueous solutions. Adsorption isotherm of gels was well according to the Langmuir and Langmuir-Freundlich models. At the same time, the diffusion behavior of nitrate ions from P（DMAEMA/HEMA） hydrogels was investigated. The diffusion coefficients are strongly influenced by the changes of temperature and pH value of solutions. At the same time, D does not depend on the gels cross-linking ratio and initial solute concentration.
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| 关 键 词： | 水凝胶 硝酸盐离子 吸附作用 扩散作用 |
| 收稿时间： | 21 March 2008 |
Characterization of nitrate ions adsorption and diffusion in P(DMAEMA/HEMA) hydrogels |
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| Yun Tian.Characterization of nitrate ions adsorption and diffusion in P(DMAEMA/HEMA) hydrogels[J].Chinese Chemical Letters,2008,19(9):1111-1114. |
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| Authors: | Yun Tian |
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| Institution: | College of Science, Tianjin University, Tianjin 300072, China |
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| Abstract: | In this work, the adsorption and diffusion behavior of nitrate ions into polycationic P(DMAEMA/HEMA) hydrogels is analyzed. Experimental results indicated that nitrate ions can be removed efficiently from aqueous solutions. Adsorption isotherm of gels was well according to the Langmuir and Langmuir-Freundlich models. At the same time, the diffusion behavior of nitrate ions from P(DMAEMA/HEMA) hydrogels was investigated. The diffusion coefficients are strongly influenced by the changes of temperature and pH value of solutions. At the same time, D does not depend on the gels cross-linking ratio and initial solute concentration. |
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| Keywords: | Hydrogels Nitrate Adsorption Diffusion coefficient |
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