Equilibrium Study of Single-Solute Adsorption of Anionic Surfactants with Polymeric XAD Resins
- 1 June 1992
- journal article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 27 (7) , 975-987
- https://doi.org/10.1080/01496399208019736
Abstract
Equilibrium data for the adsorption of sodium lauryl sulfate (SLS) and sodium dodecylbenzene sulfonate (SDBS) from aqueous solutions by Amberlite XAD-4 and XAD-7 polymeric resins at temperatures in the 10–40°C range have been obtained. The specific surface area of the resins plays a major role in adsorption, and thus the best results have been obtained with XAD-4 resin. A higher adsorption of SDBS over SLS was also observed. Several adsorption isotherm models have been used to fit the experimental data. The best results have been obtained with the Redlich-Peterson and Langmuir-Freundlich equations. Estimations of the isosteric heat of adsorption, free energy, and entropy of adsorption are also reported.Keywords
This publication has 3 references indexed in Scilit:
- Entropy determination from physisorption isotherms: A useful tool for carbon surface characterizationCarbon, 1989
- General purpose adsorption isothermsEnvironmental Science & Technology, 1986
- Adsorption of Organic Species by High Surface Area Styrene-Divinylbenzene CopolymersI&EC Product Research and Development, 1968