Preparation and characterization of photoactive anatase TiO<inf>2</inf> from algae bloomed surface water

Hossain, SM; Park, H; Kang, HJ; Kim, JB; Tijing, L; Rhee, I; Jun, YS; Shon, HK; Kim, JH

Preparation and characterization of photoactive anatase TiO<inf>2</inf> from algae bloomed surface water

Hossain, SM Park, H Kang, HJ Kim, JB Tijing, L

Rhee, I Jun, YS Shon, HK Kim, JH

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Catalysts, 2020, 10, (4)
Issue Date:: 2020-04-01

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Field	Value	Language
dc.contributor.author	Hossain, SM
dc.contributor.author	Park, H
dc.contributor.author	Kang, HJ
dc.contributor.author	Kim, JB
dc.contributor.author	Tijing, L https://orcid.org/0000-0001-9398-6355
dc.contributor.author	Rhee, I
dc.contributor.author	Jun, YS
dc.contributor.author	Shon, HK
dc.contributor.author	Kim, JH
dc.date.accessioned	2021-03-28T22:59:13Z
dc.date.available	2021-03-28T22:59:13Z
dc.date.issued	2020-04-01
dc.identifier.citation	Catalysts, 2020, 10, (4)
dc.identifier.issn	2073-4344
dc.identifier.issn	2073-4344
dc.identifier.uri	http://hdl.handle.net/10453/147589
dc.description.abstract	© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The purpose of the study was to effectively treat algae bloomed water while using a Ti-based coagulant (TiCl4) and recover photoactive novel anatase TiO2 from the flocculated sludge. Conventional jar tests were conducted in order to evaluate the coagulation efficiency, and TiCl4 was found superior compared to commercially available poly aluminum chloride (PAC). At a dose of 0.3 g Ti/L, the removal rate of turbidity, chemical oxygen demand (COD), and total phosphorus (TP) were measured as 99.8%, 66.7%, and 96.9%, respectively. Besides, TiO2 nanoparticles (NPs) were recovered from the flocculated sludge and scanning electron microscope (SEM), energy dispersive X-ray spectroscope (EDX), and X-ray diffraction (XRD) analysis confirmed the presence of only anatase phase. The recovered TiO2 was found to be effective in removing gaseous CH3CHO and NOx under UV-A lamp at a light intensity of 10 W/m2. Additionally, the TiO2 mixed mortar blocks that were prepared in this study successfully removed atmospheric nitrogen oxide (NOx) under UV irradiance. This study is one of the first to prepare anatase TiO2 from flocculated algal sludge and it showed promising results. Further research on this novel TiO2 concerning internal chemical bonds and shift in the absorbance spectrum could explore several practical implications.
dc.language	English
dc.publisher	MDPI
dc.relation.ispartof	Catalysts
dc.relation.isbasedon	10.3390/catal10040452
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0306 Physical Chemistry (incl. Structural)
dc.title	Preparation and characterization of photoactive anatase TiO<inf>2</inf> from algae bloomed surface water
dc.type	Journal Article
utslib.citation.volume	10
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0306 Physical Chemistry (incl. Structural)
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	2021-03-28T22:59:12Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	4

Abstract:

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The purpose of the study was to effectively treat algae bloomed water while using a Ti-based coagulant (TiCl4) and recover photoactive novel anatase TiO2 from the flocculated sludge. Conventional jar tests were conducted in order to evaluate the coagulation efficiency, and TiCl4 was found superior compared to commercially available poly aluminum chloride (PAC). At a dose of 0.3 g Ti/L, the removal rate of turbidity, chemical oxygen demand (COD), and total phosphorus (TP) were measured as 99.8%, 66.7%, and 96.9%, respectively. Besides, TiO2 nanoparticles (NPs) were recovered from the flocculated sludge and scanning electron microscope (SEM), energy dispersive X-ray spectroscope (EDX), and X-ray diffraction (XRD) analysis confirmed the presence of only anatase phase. The recovered TiO2 was found to be effective in removing gaseous CH3CHO and NOx under UV-A lamp at a light intensity of 10 W/m2. Additionally, the TiO2 mixed mortar blocks that were prepared in this study successfully removed atmospheric nitrogen oxide (NOx) under UV irradiance. This study is one of the first to prepare anatase TiO2 from flocculated algal sludge and it showed promising results. Further research on this novel TiO2 concerning internal chemical bonds and shift in the absorbance spectrum could explore several practical implications.

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http://hdl.handle.net/10453/147589