Chinese Journal of Chemical Engineering, Vol.28, No.1, 84-89, 2020
Study on mass transfer of ethyl acetate in polymer adsorbent by experimental and theoretical breakthrough curves
A new polymeric adsorbent with highly hypercrosslinked structure was developed for the removal of VOCs from polluted air. The purpose of this work is to obtain the intraparticle mass transfer coefficient of the adsorbent particles. Adsorption experiments for obtaining breakthrough curves were carried out with a fixed bed system. A dynamic mathematical model for the fixed bed adsorption system was developed. By model fitting, the overall mass transfer coefficient was determined when the deviation error was minimum. Then, the intraparticle mass transfer coefficient of the adsorbent was determined when the external mass transfer resistance was eliminated at higher velocities. Furthermore, a linear relationship of the intraparticle mass transfer coefficient and equilibrium coeffident at lower inlet gas concentrations range was correlated. Moreover, an equation for predicting external mass transfer coefficient at low Reynolds number range at room temperature was obtained. (C) 2019 The Chemical Industry and Engineering Sodety of China, and Chemical Industry Press Co., Ltd. All rights reserved.