Solid-liquid equilibrium of glycolic acid with alumina

Abstract

This work aims to present novel adsorption equilibrium data for glycolic acid with alumina at aqueous solutions. The adsorption experiments were carried out with aqueous glycolic acid solutions with various initial concentrations (0.38-2.1) molL(-1). Adsorbent alumina of (0.2-2) g was used. To show the effect of temperature, also adsorption equilibrium experiments were made at various temperatures (298, 308, and 318K). The equilibrium concentrations of glycolic acid have been found. Removal of glycolic acid was 20.51% as the maximum percentage. The equilibrium data show well fitting with Langmuir isotherm. Also, Elovich model have been applied to adsorption data.