Insight into the adsorption mechanism of cationic dye onto biosorbents derived from agricultural wastes

Tran, HN; You, SJ; Nguyen, TV; Chao, HP

Insight into the adsorption mechanism of cationic dye onto biosorbents derived from agricultural wastes

Tran, HN You, SJ Nguyen, TV

Chao, HP

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Publication Type:: Journal Article
Citation:: Chemical Engineering Communications, 2017, 204 (9), pp. 1020 - 1036
Issue Date:: 2017-09-02

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Field	Value	Language
dc.contributor.author	Tran, HN	en_US
dc.contributor.author	You, SJ	en_US
dc.contributor.author	Nguyen, TV https://orcid.org/0000-0003-3893-1217	en_US
dc.contributor.author	Chao, HP	en_US
dc.date.issued	2017-09-02	en_US
dc.identifier.citation	Chemical Engineering Communications, 2017, 204 (9), pp. 1020 - 1036	en_US
dc.identifier.issn	0098-6445	en_US
dc.identifier.uri	http://hdl.handle.net/10453/124971
dc.description.abstract	© 2017 Taylor & Francis. This study investigated the phenomenon and mechanism of adsorption of methylene green 5 (MG5) on three pristine biosorbents: golden shower pod (GS), coconut shell (CC), and orange peel (OP). The results showed that the biosorbents possessed low specific surface areas, but abundant functional groups. Adsorption was strongly affected by the solution’s pH and ionic strength. As revealed in the kinetic study, equilibrium was rapidly established, requiring low activation energies; a removal rate of 30%–87% was achieved within 1 min. The maximum Langmuir adsorption capacities at 30°C exhibited the following order: GS (106 mg/g) > OP (92 mg/g) > CC (59 mg/g). Thermodynamic experiments suggested that the adsorption occurred spontaneously and exothermically The primary adsorption mechanisms involved electrostatic attraction, hydrogen bonding formations, and n-π interaction. Thermogravimetric analysis (TGA) revealed that three biopolymer components (i.e., hemicellulose, cellulose, and lignin) played controlling roles in the adsorption process. Thus, these three agricultural residues can be considered potential low-cost adsorbents for efficient dye adsorption applications.	en_US
dc.relation.ispartof	Chemical Engineering Communications	en_US
dc.relation.isbasedon	10.1080/00986445.2017.1336090	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Insight into the adsorption mechanism of cationic dye onto biosorbents derived from agricultural wastes	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	204	en_US
utslib.for	0904 Chemical Engineering	en_US
pubs.embargo.period	Not known	en_US
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
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	204	en_US

Abstract:

© 2017 Taylor & Francis. This study investigated the phenomenon and mechanism of adsorption of methylene green 5 (MG5) on three pristine biosorbents: golden shower pod (GS), coconut shell (CC), and orange peel (OP). The results showed that the biosorbents possessed low specific surface areas, but abundant functional groups. Adsorption was strongly affected by the solution’s pH and ionic strength. As revealed in the kinetic study, equilibrium was rapidly established, requiring low activation energies; a removal rate of 30%–87% was achieved within 1 min. The maximum Langmuir adsorption capacities at 30°C exhibited the following order: GS (106 mg/g) > OP (92 mg/g) > CC (59 mg/g). Thermodynamic experiments suggested that the adsorption occurred spontaneously and exothermically The primary adsorption mechanisms involved electrostatic attraction, hydrogen bonding formations, and n-π interaction. Thermogravimetric analysis (TGA) revealed that three biopolymer components (i.e., hemicellulose, cellulose, and lignin) played controlling roles in the adsorption process. Thus, these three agricultural residues can be considered potential low-cost adsorbents for efficient dye adsorption applications.

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http://hdl.handle.net/10453/124971