Activated nano-Al<inf>2</inf>O<inf>3</inf> loaded on polyurethane foam as a potential carrier for fluorine removal

Wang, Z; Gu, X; Zhang, Y; Zhang, X; Ngo, HH; Liu, Y; Jiang, W; Tan, X; Wang, X; Zhang, J

Activated nano-Al<inf>2</inf>O<inf>3</inf> loaded on polyurethane foam as a potential carrier for fluorine removal

Wang, Z Gu, X Zhang, Y Zhang, X Ngo, HH Liu, Y Jiang, W Tan, X Wang, X Zhang, J

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Journal of Water Process Engineering, 2021, 44, pp. 102444-102444
Issue Date:: 2021-12-01

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Field	Value	Language
dc.contributor.author	Wang, Z
dc.contributor.author	Gu, X
dc.contributor.author	Zhang, Y
dc.contributor.author	Zhang, X
dc.contributor.author	Ngo, HH
dc.contributor.author	Liu, Y
dc.contributor.author	Jiang, W
dc.contributor.author	Tan, X
dc.contributor.author	Wang, X
dc.contributor.author	Zhang, J
dc.date.accessioned	2021-12-07T06:30:51Z
dc.date.available	2021-12-07T06:30:51Z
dc.date.issued	2021-12-01
dc.identifier.citation	Journal of Water Process Engineering, 2021, 44, pp. 102444-102444
dc.identifier.issn	2214-7144
dc.identifier.uri	http://hdl.handle.net/10453/152202
dc.description.abstract	Fluorine is an essential trace element for human beings and animals and it helps to build strong bones and teeth. It is, however, also toxic to biological health in that an excessive intake of fluorine concentration from a water environment could be dangerous. This study aims to develop a novel and recoverable composite foam polyurethane foam (PUF)-Al2O3 for fluorine removal. The proposed material was developed using dopamine hydrochloride as the underwater adhesive connecting with the adsorption function group of activated nano-Al2O3 and PUF. The activated nano-Al2O3 in the PUF was characterized by SEM and XRD, and the results indicated that PUF-Al2O3 surface hydrophilicity rose significantly when compared with the original PUF. The foam PUF-Al2O3 steadily removed fluorine with a maximum adsorption capacity of 2.08 mg/g. The adsorption isotherm of PUF-Al2O3 was fitted well to the Langmuir isotherm model while the pseudo-first-order model well described the adsorption kinetics of PUF-Al2O3. The composite foam reached adsorption equilibrium in a relatively short time of approximately 10 min. The PUF-Al2O3 presented an excellent regeneration performance in 10 mg/L fluorine solution after 5 cycles. Further adsorption mechanism analysis indicated the ion exchange mechanism played a decisive role in PUF-Al2O3 foam's fluorine removal.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Journal of Water Process Engineering
dc.relation.isbasedon	10.1016/j.jwpe.2021.102444
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering
dc.title	Activated nano-Al<inf>2</inf>O<inf>3</inf> loaded on polyurethane foam as a potential carrier for fluorine removal
dc.type	Journal Article
utslib.citation.volume	44
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
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	*
dc.date.updated	2021-12-07T06:30:50Z
pubs.publication-status	Published
pubs.volume	44

Abstract:

Fluorine is an essential trace element for human beings and animals and it helps to build strong bones and teeth. It is, however, also toxic to biological health in that an excessive intake of fluorine concentration from a water environment could be dangerous. This study aims to develop a novel and recoverable composite foam polyurethane foam (PUF)-Al2O3 for fluorine removal. The proposed material was developed using dopamine hydrochloride as the underwater adhesive connecting with the adsorption function group of activated nano-Al2O3 and PUF. The activated nano-Al2O3 in the PUF was characterized by SEM and XRD, and the results indicated that PUF-Al2O3 surface hydrophilicity rose significantly when compared with the original PUF. The foam PUF-Al2O3 steadily removed fluorine with a maximum adsorption capacity of 2.08 mg/g. The adsorption isotherm of PUF-Al2O3 was fitted well to the Langmuir isotherm model while the pseudo-first-order model well described the adsorption kinetics of PUF-Al2O3. The composite foam reached adsorption equilibrium in a relatively short time of approximately 10 min. The PUF-Al2O3 presented an excellent regeneration performance in 10 mg/L fluorine solution after 5 cycles. Further adsorption mechanism analysis indicated the ion exchange mechanism played a decisive role in PUF-Al2O3 foam's fluorine removal.

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http://hdl.handle.net/10453/152202