A Study on Adsorption of Anionic Surfactants with Nonionic Resins

비이온성 수지를 이용한 음이온 계면활성제의 흡착에 관한 연구

  • Seo, Yang-Gon (Dept. of Chemical Engineering, and RIEP Gyeongsang National University) ;
  • Ahn, Jou-Hyeon (Dept. of Chemical Engineering, and RIEP Gyeongsang National University) ;
  • Heo, Byeong-Young (Dept. of Chemical Engineering, and RIEP Gyeongsang National University)
  • Published : 1996.06.01

Abstract

The adsorption of the anionic surfactants, sodium lauryl sulfate (SLS) and sodium dodecylbenzene sulfonate (SDBS) anion surfactants form aqueous solutions with nonionic resins, Amberlite XAD-2, XAD-4 and XAD-7 at temperatures in 15~45$^{\circ}C$ range was studied. Several adsorption isotherm models were used to fit the experimental data, The best results were obtained with the Redlich-Peterson equation and the Freundlich model provided remarkably good fits. For a particular resin at a particular temperature, SDBS was more extensively adsorbed than SLS. The highest adsorption were obtained with XAD-4 resin and the specific surface area of the resins plays a major role in adsorption of the surfactants. Estimations of the isosteric heat of adsorption were indicative of an exothermic process, and their magnitudes manifested a physisorption process.

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