Affiliation:
1. Department of Chemical Engineering, Bharati Vidyapeeth (Deemed to be University), College of Engineering, Pune-411043, India
Abstract
Walnut shell was used as an adsorbent for adsorption of acetic acid. Batch experiments were conducted
for adsorption equilibrium studies and kinetics by using walnut shell. Optimization of parameters like
temperature, rotation, adsorbent dose and contact time were studied. Amount of acetic acid adsorbed
was analyzed by titration. Equilibrium condition was investigated. Adsorption kinetics were tested for
different models and found best suitable for intraparticle diffusion model. The batch experimental
data was fitted to Langmuir, Freundlich, Temkin, Sips and Redlich-Peterson isotherms. The best fitted
isotherm was Langmuir isotherm. Regeneration was tried by heating the adsorbent in microwave at
200 ºC. Up to three cycles adsorbent gave good efficiency for adsorption of acetic acid.
Publisher
Asian Journal of Chemistry