Investigation of Adsorption Isotherms of Myristic, Palmitic and Stearic Acids on Rice Hull Ash

Authors : Hüseyin TOPALLAR, Yüksel BAYRAK

Pages : 193-198

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The adsorption of myristic, palmitic and stearic acids on rice hull ash from isooctane as solvent was studied and conformed to a Langmuir isotherm. Monolayer coverage was determined to be 40.08, 38.43 and 37.27 mg/g, respectively. The free energy of adsorption, D G°ads, for the adsorption was determined to be -6,25, -6.32 and -6.39 kcal mol-1 for the adsorbates, respectively. The equilibrium parameter indicated that rice hull ash is a good adsorbent for myristic, palmitic and stearic acids examined.
Keywords : Adsorption, free energy of adsorption, Langmuir isotherm, myristic, palmitic, stearic acids, rice hull ash