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KMID : 1024519960050030369
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Journal of the Environmental Sciences
1996 Volume.5 No. 3 p.369 ~ p.376
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A Study on Adsorption of Anionic Surfactants with Nonionic Resins
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Seo Yang-Gon
Ahn Jou-Hyeon
Heo Byeong-Young
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Abstract
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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 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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KEYWORD
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Adsorption, Anionic Surfactant, Polymeric Resin, lsotherm, Physisorption, Amberlite
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