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Acta Physico-Chimica Sinica  2009, Vol. 25 Issue (01): 97-102    DOI: 10.3866/PKU.WHXB20090117
Article     
Adsorption Performances for Vanillin from Aqueous Solution by the Hydrophobic-Hydrophilic Macroporous Polydivinylbenzene/Polyacrylethylenediamine IPN Resin
XIAO Gu-Qing; XIE Xiang-Lin; XU Man-Cai
College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P. R. China; College of Chemistry and Environmental Engineering, Hunan City University, Yiyang 413000, Hunan Province, P. R. China
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Abstract  Hydrophobic-hydrophilic macroporous polydivinylbenzene/polyacrylethylenediamine interpenetrating polymer networks (PDVB/PAEMIPN) were prepared by the sequential suspension polymerization method. These were composed of two networks, of which one was hydrophobic (PDVB) and the other was hydrophilic (PAEM). The objective of this work was to study the adsorption thermodynamics and adsorption kinetics of this hydrophobic-hydrophilic IPN. The focus was on adsorption isotherms of vanillin at different temperatures, and these fit well into the Freundlich adsorption isotherm. The isosteric adsorption enthalpy, adsorption Gibbs free energies and the adsorption entropy could be calculated according to thermodynamic functions. The hydrophobic PDVB in the PDVB/PAEM IPN resin adsorbs through hydrophobic interaction while the hydrophilic PAEM adsorbs by hydrogen bonding. The adsorption kinetic data was fitted to the Lagergren pseudo second order rate equation. Intraparticle diffusion was the rate controlling step and could be described by HSDMmodel.

Key wordsHydrophobic-hydrophilic      PDVB/PAEM IPN      Vanillin      Adsorption      Thermodynamics      Kinetics     
Received: 21 July 2008      Published: 12 November 2008
MSC2000:  O642  
  O643  
Corresponding Authors: XU Man-Cai     E-mail: xmcxgq@yahoo.com.cn
Cite this article:

XIAO Gu-Qing; XIE Xiang-Lin; XU Man-Cai. Adsorption Performances for Vanillin from Aqueous Solution by the Hydrophobic-Hydrophilic Macroporous Polydivinylbenzene/Polyacrylethylenediamine IPN Resin. Acta Physico-Chimica Sinica, 2009, 25(01): 97-102.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20090117     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2009/V25/I01/97

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