C114 Experimental study on adsorption kinetics of activated carbon-ethanol pair

Abstract

This study presents an experimental investigation of adsorption kinetics of ethanol onto a highly porous activated carbon powder namely Maxsorb III. Instantaneous adsorption uptake of ethanol is measured using magnetic suspension adsorption measurement unit (MSB-VG-S2). Experiments have been carried out at different adsorption temperatures ranging from 30℃ to 60℃. The Dubinin-Radushkevich (D-R) equation has been used to correlate the experimental data. Experimental results show that Maxsorb III can adsorb up to 1.24 kg of ethanol per kg of adsorbent. The diffusion time constant and overall mass transfer coefficient are also estimated using the semi-infinite model. The result shows that these values increase with adsorption temperature.