Investigation of heavy metal adsorption in binary system by nanocrystalline cellulose – Bentonite nanocomposite: Improvement on extended Langmuir isotherm model.

Putro, Jindrayani Nyoo, Santoso, Shella Permatasari, Ismadji, Suryadi and Ju, Yi-Hsu (2017) Investigation of heavy metal adsorption in binary system by nanocrystalline cellulose – Bentonite nanocomposite: Improvement on extended Langmuir isotherm model. Microporous and Mesoporous Materials, 246 (1). pp. 166-177. ISSN 13871811

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Abstract

The preparation of NCC – bentonite nanocomposite using waste paper as the source of NCC was conducted in this study. The adsorption performance of the composite was tested for the removal of Pb(II)and Hg(II) from aqueous solution in single and binary systems. Langmuir and Freundlich adsorption isotherms were employed to correlate pure component adsorption isotherm. Langmuir equation can represent the experimental data better than Freundlich, the qm for lead is higher than mercury in both systems (single system qm = 0.44 mmol/g (Pb) and 0.23 mmol/g (Hg) for composite). All systems exhibit endothermic process, except for bentonite which shows the exothermic process. The modification of extended Langmuir model for a binary system with the inclusion of fractional loading and heat of adsorption was proposed in this study. The modified extended Langmuir model could represent the experimental data better than original extended Langmuir equation.

Item Type: Article
Uncontrolled Keywords: Bentonite Nanocellulose Composite Isotherms Adsorption
Subjects: Engineering > Chemical Engineering
Divisions: Journal Publication
Depositing User: F.X. Hadi
Date Deposited: 23 Aug 2018 04:16
Last Modified: 11 Oct 2018 04:09
URI: http://repository.ukwms.ac.id/id/eprint/16045

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