Adsorption of Methylene Blue from Aqueous Solutions on Carbon Coated Monolith

https://doi.org/10.22146/ajche.50115

Darmadi Darmadi(1*), Thomas S.Y Choong(2), Chuah T.G(3), Robiah Yunus(4), Y.H. Taufiq Yap(5)

(1) Department of Chemical and Environmental Engineering, Faculty of Engineering Universiti Putra Malaysia, 43400 UPM Serdang, Selangor , Malaysia Department of Chemical Engineering, Faculty of Engineering Syiah Kuala University, Banda Aceh, Indonesia
(2) Department of Chemical and Environmental Engineering, Faculty of Engineering Universiti Putra Malaysia, 43400 UPM Serdang, Selangor , Malaysia
(3) Department of Chemical and Environmental Engineering, Faculty of Engineering Universiti Putra Malaysia, 43400 UPM Serdang, Selangor , Malaysia
(4) Department of Chemical and Environmental Engineering, Faculty of Engineering Universiti Putra Malaysia, 43400 UPM Serdang, Selangor , Malaysia
(5) Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
(*) Corresponding Author

Abstract


Carbon coated monolith was used as adsorbent to remove methylene blue from aqueous solution. Adsorption rate and equilibrium parameters of methylene blue were investigated in a batch system. Equilibrium adsorption data were predicted by two isotherms, i.e. the Langmuir and the Freundlich isotherms. The best fit to the data was obtained with the Langmuir isotherm with maximum monolayer adsorption capacity of 191.307 mg/g. Kinetics of adsorption with respect to the initial concentration of dye was described by using both the pseudo-first-order and pseudo-second-order models. It was found that kinetic data fitted well with the pseudo-first-order model.

Keywords


Adsorption, Carbon coated monolith, and Methylene blue



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DOI: https://doi.org/10.22146/ajche.50115

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