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Potassium Hydroxide Activation as an Adsorbent for Kinetic Models of Hexavalent Chromium Adsorptions onto Garcinia mangosteen Shell

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Abstract:

The utilized adsorption kinetic models, i.e., pseudo-zero order, pseudo-first-order, pseudo-second order, intraparticle diffusion, Bangham’s pore diffusion, liquid film diffusion, modified Freundlich and Elovich models have been cultivated the hexavalent chromium adsorption process. A high correlation coefficient (R2) and a small residual root mean square error (RMSE) and Chi-square (χ2) can be depicted in the pseudo-first order for the kinetic adsorption process of hexavalent chromium adsorption on the activated mangosteen shell with potassium hydroxide and carbonized at 400 °C for 2 h as a biochar adsorbent which has a specific surface area of 164 m2/g.

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Info:

Periodical:

Materials Science Forum (Volume 1086)

Pages:

115-122

DOI:

https://doi.org/10.4028/p-gw4opv

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Online since:

April 2023

Authors:

Siriporn Sripiboon, Panida Charnkeitkong*

Keywords:

Adsorption, Hexavalent Chromium, Kinetic Model, Mangosteen

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© 2023 Trans Tech Publications Ltd. All Rights Reserved

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