Preparation of activated bentonite and its adsorption behavior on oil-soluble green pigment

Zheng, R; Gao, H; Ren, Z; Cen, D; Chen, Z

Preparation of activated bentonite and its adsorption behavior on oil-soluble green pigment

Zheng, R Gao, H Ren, Z Cen, D Chen, Z

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Publisher:: OFICYNA WYDAWNICZA POLITECHNIKI WROCLAWSKIEJ
Publication Type:: Journal Article
Citation:: Physicochemical Problems of Mineral Processing, 2017, 53, (2), pp. 829-845
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Zheng, R
dc.contributor.author	Gao, H
dc.contributor.author	Ren, Z
dc.contributor.author	Cen, D
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.date.accessioned	2022-10-28T06:06:18Z
dc.date.available	2022-10-28T06:06:18Z
dc.date.issued	2017-01-01
dc.identifier.citation	Physicochemical Problems of Mineral Processing, 2017, 53, (2), pp. 829-845
dc.identifier.issn	1643-1049
dc.identifier.issn	2084-4735
dc.identifier.uri	http://hdl.handle.net/10453/162819
dc.description.abstract	The present research work focuses on effective preparation of activated bentonite (AB) and its application in removal of oil-soluble green pigment (OSGP) from either vegetable oils or food-processing wastewater. Mono-factor experiments were carried out to explore the effects of operation factors in preparation of AB. The parameters investigated were the effect of contact time, adsorbent dosage, initial OSGP concentration and temperature. The chemical composition, crystalline phases, microstructure and functional groups of prepared AB were characterized and evaluated by X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR), respectively. The adsorption kinetics and equilibrium isotherms were studied, finding that the adsorption process fitted better with the pseudo-second-order model and the Freundlich isotherm equation. In addition, thermodynamic parameters, such as standard the Gibbs free energy (δG°), standard enthalpy (δH°) and standard entropy (δS°) were also calculated, indicating that adsorption was spontaneous and endothermic. The findings of this investigation suggest that AB prepared through microwave activation as a cheap adsorbent holds great potential to remove oil-soluble green pigment in the wastewater treatment process.
dc.language	English
dc.publisher	OFICYNA WYDAWNICZA POLITECHNIKI WROCLAWSKIEJ
dc.relation.ispartof	Physicochemical Problems of Mineral Processing
dc.relation.isbasedon	10.5277/ppmp170213
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Preparation of activated bentonite and its adsorption behavior on oil-soluble green pigment
dc.type	Journal Article
utslib.citation.volume	53
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-10-28T06:06:14Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	53
utslib.citation.issue	2

Abstract:

The present research work focuses on effective preparation of activated bentonite (AB) and its application in removal of oil-soluble green pigment (OSGP) from either vegetable oils or food-processing wastewater. Mono-factor experiments were carried out to explore the effects of operation factors in preparation of AB. The parameters investigated were the effect of contact time, adsorbent dosage, initial OSGP concentration and temperature. The chemical composition, crystalline phases, microstructure and functional groups of prepared AB were characterized and evaluated by X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR), respectively. The adsorption kinetics and equilibrium isotherms were studied, finding that the adsorption process fitted better with the pseudo-second-order model and the Freundlich isotherm equation. In addition, thermodynamic parameters, such as standard the Gibbs free energy (δG°), standard enthalpy (δH°) and standard entropy (δS°) were also calculated, indicating that adsorption was spontaneous and endothermic. The findings of this investigation suggest that AB prepared through microwave activation as a cheap adsorbent holds great potential to remove oil-soluble green pigment in the wastewater treatment process.

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http://hdl.handle.net/10453/162819