Development of a novel method to prepare Fe- and Al-doped TiO<inf>2</inf> from wastewater

Shon, HK; Cho, DL; Na, SH; Kim, JB; Park, HJ; Kim, JH

Development of a novel method to prepare Fe- and Al-doped TiO<inf>2</inf> from wastewater

Shon, HK

Cho, DL Na, SH Kim, JB Park, HJ Kim, JH

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Publication Type:: Journal Article
Citation:: Journal of Industrial and Engineering Chemistry, 2009, 15 (4), pp. 476 - 482
Issue Date:: 2009-07-25

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Field	Value	Language
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.contributor.author	Cho, DL	en_US
dc.contributor.author	Na, SH	en_US
dc.contributor.author	Kim, JB	en_US
dc.contributor.author	Park, HJ	en_US
dc.contributor.author	Kim, JH	en_US
dc.date.issued	2009-07-25	en_US
dc.identifier.citation	Journal of Industrial and Engineering Chemistry, 2009, 15 (4), pp. 476 - 482	en_US
dc.identifier.issn	1226-086X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8457
dc.description.abstract	A simple and novel method to synthesize iron and aluminium-doped titanium dioxide (TiO2) was investigated. Titanium tetrachloride (TiCl4) was used as a coagulant to remove organic matter from wastewater. The settled floc (sludge) was dewatered and incinerated at 600 °C after TiCl4 flocculation. The resultant by-product from the waste sludge was valuable TiO2. TiCl4 coagulant was added with FeCl3 and Al2(SO4)3 coagulants to dope iron and aluminium on TiO2 in a flocculation process. The effect of iron and aluminium on TiO2 was investigated in terms of scanning electron microscopy/energy dispersive X-ray (SEM/EDX), X-ray diffraction (XRD), optical absorbance and photocatalytic activity. The majority of Fe/TiO2 and Al/TiO2 particles were found to be less than 1 μm size formed by 0.1 μm agglomerates using SEM analysis. Fe/TiO2 included Ti, O, C, P and Fe elements and Al/TiO2 consisted of Ti, O, C, P and Al elements as confirmed by EDX results. Remaining organic carbon from the settled organic matter was the source of C atom in TiO2 whereas the P atom in TiO2 came from phosphorus nutrient present in wastewater. The majority of acetaldehyde with Fe/TiO2 and Al/TiO2 was significantly removed under UV irradiation within 60 min. However, at higher iron concentration, acetaldehyde removal decreased by almost 50%. Under visible light irradiation, the photo-decomposition of acetaldehyde using the Fe/TiO2 and Al/TiO2 was marginal. © 2009 The Korean Society of Industrial and Engineering Chemistry.	en_US
dc.relation.ispartof	Journal of Industrial and Engineering Chemistry	en_US
dc.relation.isbasedon	10.1016/j.jiec.2009.01.004	en_US
dc.subject.classification	Polymers	en_US
dc.title	Development of a novel method to prepare Fe- and Al-doped TiO<inf>2</inf> from wastewater	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	15	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
dc.location.activity	ISI:000271203900006	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	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	15	en_US

Abstract:

A simple and novel method to synthesize iron and aluminium-doped titanium dioxide (TiO2) was investigated. Titanium tetrachloride (TiCl4) was used as a coagulant to remove organic matter from wastewater. The settled floc (sludge) was dewatered and incinerated at 600 °C after TiCl4 flocculation. The resultant by-product from the waste sludge was valuable TiO2. TiCl4 coagulant was added with FeCl3 and Al2(SO4)3 coagulants to dope iron and aluminium on TiO2 in a flocculation process. The effect of iron and aluminium on TiO2 was investigated in terms of scanning electron microscopy/energy dispersive X-ray (SEM/EDX), X-ray diffraction (XRD), optical absorbance and photocatalytic activity. The majority of Fe/TiO2 and Al/TiO2 particles were found to be less than 1 μm size formed by 0.1 μm agglomerates using SEM analysis. Fe/TiO2 included Ti, O, C, P and Fe elements and Al/TiO2 consisted of Ti, O, C, P and Al elements as confirmed by EDX results. Remaining organic carbon from the settled organic matter was the source of C atom in TiO2 whereas the P atom in TiO2 came from phosphorus nutrient present in wastewater. The majority of acetaldehyde with Fe/TiO2 and Al/TiO2 was significantly removed under UV irradiation within 60 min. However, at higher iron concentration, acetaldehyde removal decreased by almost 50%. Under visible light irradiation, the photo-decomposition of acetaldehyde using the Fe/TiO2 and Al/TiO2 was marginal. © 2009 The Korean Society of Industrial and Engineering Chemistry.

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