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Vol. 34 No. 9 (2022): Vol 34 Issue 9

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Adsorptive Removal of Acetic Acid by Walnut Shell as Low-Cost Adsorbent

https://doi.org/10.14233/ajchem.2022.23851
Kavita Kulkarni
Department of Chemical Engineering, Bharati Vidyapeeth (Deemed to be University), College of Engineering, Pune-411043, India
Rahul Kulkarni
Department of Chemical Engineering, Bharati Vidyapeeth (Deemed to be University), College of Engineering, Pune-411043, India
Yogesh Chendake
Department of Chemical Engineering, Bharati Vidyapeeth (Deemed to be University), College of Engineering, Pune-411043, India
Arghya Garg
Department of Chemical Engineering, Bharati Vidyapeeth (Deemed to be University), College of Engineering, Pune-411043, India
Pragati Srivastava
Department of Chemical Engineering, Bharati Vidyapeeth (Deemed to be University), College of Engineering, Pune-411043, India

Corresponding Author(s) : Kavita Kulkarni

kskulkarni@bvucoep.edu.in; kavitashreya@gmail.com

Asian Journal of Chemistry, Vol. 34 No. 9 (2022): Vol 34 Issue 9

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.

Keywords

Acetic acid Kinetics Walnut shell Isotherms Adsorption
Kulkarni, K., Kulkarni, R., Chendake, Y., Garg, A., & Srivastava, P. (2022). Adsorptive Removal of Acetic Acid by Walnut Shell as Low-Cost Adsorbent. Asian Journal of Chemistry, 34(9), 2318–2324. https://doi.org/10.14233/ajchem.2022.23851
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