期刊
CHINESE CHEMICAL LETTERS
卷 19, 期 9, 页码 1111-1114出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2008.05.040
关键词
Hydrogels; Nitrate; Adsorption; Diffusion coefficient
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. (c) 2008 Yun Tian. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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