CIESC Journal ›› 2011, Vol. 19 ›› Issue (2): 267-272.

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Strontium Adsorption from Sulfuric Acid Solution by Dowex 50W-X Resins

Meisam Hafizi1, Hossein Abolghasemi1, Morteza Moradi1, Saeed Alamdar Milani2   

  1. 1. School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran;
    2. Science and Technology Research Institute, Tehran, Iran
  • 收稿日期:2010-07-09 修回日期:2010-12-19 出版日期:2011-04-28 发布日期:2011-04-28
  • 通讯作者: Morteza Moradi,E-mail:mortezamoradi.ut.ac.ir@gmail.com

Strontium Adsorption from Sulfuric Acid Solution by Dowex 50W-X Resins

Meisam Hafizi1, Hossein Abolghasemi1, Morteza Moradi1, Saeed Alamdar Milani2   

  1. 1. School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran;
    2. Science and Technology Research Institute, Tehran, Iran
  • Received:2010-07-09 Revised:2010-12-19 Online:2011-04-28 Published:2011-04-28

摘要: In this study,strontium adsorption from sulfuric acid solution by different Dowex 50W-X ion exchange resins was investigated.Among these resins,Dowex 50W-X8 resin showed the maximum sorption of strontium from the aqueous solutions.The effect of pH,contact time,mass of resin,temperature,and concentration of interfering ions on strontium adsorption were evaluated to determine the optimum conditions of strontium sorption process.The kinetic models of sorption were analyzed using pseudo-first and pseudo-second order models.The results indicated that the pseudo-second order kinetic model was more appropriate than the other one.Moreover,the data obtained in this study were fitted into several sorption isotherm models and it was found that the Langmuir sorption isotherm shows the best fitting to the experimental data.

关键词: strontium adsorption, ion exchange, Dowex 50W, kinetic model, resin, sorption isotherm model

Abstract: In this study,strontium adsorption from sulfuric acid solution by different Dowex 50W-X ion exchange resins was investigated.Among these resins,Dowex 50W-X8 resin showed the maximum sorption of strontium from the aqueous solutions.The effect of pH,contact time,mass of resin,temperature,and concentration of interfering ions on strontium adsorption were evaluated to determine the optimum conditions of strontium sorption process.The kinetic models of sorption were analyzed using pseudo-first and pseudo-second order models.The results indicated that the pseudo-second order kinetic model was more appropriate than the other one.Moreover,the data obtained in this study were fitted into several sorption isotherm models and it was found that the Langmuir sorption isotherm shows the best fitting to the experimental data.

Key words: strontium adsorption, ion exchange, Dowex 50W, kinetic model, resin, sorption isotherm model