SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (2): 277-283.

Previous Articles     Next Articles

Adsorptive Thermodynamic Properties and Kinetics of trans-1,2-Cyclohexandiol onto AB-8 Resin

XIE Yanxin1, HOU Lili2, YANG Qian3, JIANG Denggao1   

  1. 1. College of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
    2. Department of Chemistry, Zhengzhou University, Zhengzhou 450001, China;
    3. Committee of Baoshan Circular Economy Industrial Agglomeration, Hebi 458030, China
  • Received:2011-11-03 Revised:2012-03-15 Online:2012-05-02 Published:2012-04-28

Adsorptive Thermodynamic Properties and Kinetics of trans-1,2-Cyclohexandiol onto AB-8 Resin

谢艳新1, 侯丽丽2, 杨倩3, 蒋登高1   

  1. 1. College of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
    2. Department of Chemistry, Zhengzhou University, Zhengzhou 450001, China;
    3. Committee of Baoshan Circular Economy Industrial Agglomeration, Hebi 458030, China
  • 通讯作者: XIE Yanxin

Abstract: AB-8 resin was used as an adsorbent for the removal of trans-1,2-cyclohexandiol(CHD) from aqueous solutions.Batch experiments were carried out to investigate the effect of contact time and temperature on sorption efficiency.The adsorptive thermodynamic properties and kinetics of CHD from water onto AB-8 resin were studied.The Langmuir and Freundlich isotherm models were employed to discuss the adsorption behavior.Thermodynamic parameters such as ΔGθHθ and ΔSθ were calculated.The results indicate that the equilibrium data are perfectly represented by Langmuir isotherm model.Thermodynamic study reveals that it is an exothermic process in nature and mainly physical adsorption enhanced by chemisorption with a decrease of entropy process.The kinetics of CHD adsorption is well described by the pseudo second-order model.The adsorbed CHD can be eluted from AB-8 resin by 5% ethanol aqueous solution with 100% elution percentage.

Key words: AB-8 resin, trans-1, 2-cyclohexandiol, adsorption, isotherm, thermodynamics, kinetics

摘要: AB-8 resin was used as an adsorbent for the removal of trans-1,2-cyclohexandiol(CHD) from aqueous solutions.Batch experiments were carried out to investigate the effect of contact time and temperature on sorption efficiency.The adsorptive thermodynamic properties and kinetics of CHD from water onto AB-8 resin were studied.The Langmuir and Freundlich isotherm models were employed to discuss the adsorption behavior.Thermodynamic parameters such as ΔGθHθ and ΔSθ were calculated.The results indicate that the equilibrium data are perfectly represented by Langmuir isotherm model.Thermodynamic study reveals that it is an exothermic process in nature and mainly physical adsorption enhanced by chemisorption with a decrease of entropy process.The kinetics of CHD adsorption is well described by the pseudo second-order model.The adsorbed CHD can be eluted from AB-8 resin by 5% ethanol aqueous solution with 100% elution percentage.

关键词: AB-8 resin, trans-1, 2-cyclohexandiol, adsorption, isotherm, thermodynamics, kinetics