BATCH ADSORPTION STUDIES FOR IRON(III) REMOVAL FROM AQUEOUS SOLUTION BY SAND AND CHARCOAL MIXTURE

Abstract

In this study, batch adsorption of Fe(III) ions onto sand and charcoal mixture(2:1) was  investigated. The factors controlling the adsorption process such as agitation time, initial pH, dosage and initial concentration have been examined. The equilibrium time was found to be 150 minutes. The adsorbent showed a high affinity to Fe(III) ions at pH values between 3.0  to 4.0. Fe(III) adsorption equilibrium was analyzed with both Langmuir and Freundlich isotherm equations. Maximum Fe(III) adsorption capacity of the mixture  was calculated to be 19.23077 mg/g. Fe(III) adsorption kinetics fitted well with the pseudo second order model.