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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.
In this work, the adsorption and diffusion behavior of nitrate ions into polycationic P (DMAEMA / HEMA) hydrogels is analyzed. Experimental results indicate that the 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.