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Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light

Geosmin (GSM), a typical musty odor compound, causes undesirable earthy off-flavors and is a serious concern in the drinking water and aquaculture industries. Here, we employed a novel palladium (Pd) modified tungsten trioxide (WO3) photocatalyst to remove GSM from water under simulated solar light....

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Main Authors: Xue, Q., Liu, Y., Zhou, Q., Utsumi, M., Zhang, Z., Sugiura, N.
Format: Article
Published: Elsevier 2016
Subjects:
S Agriculture (General)
Online Access:http://eprints.utm.my/id/eprint/71749/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939454110&doi=10.1016%2fj.cej.2015.08.016&partnerID=40&md5=19f13775cd69c233d0d3a3acaf3202ba
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spelling my.utm.717492017-11-15T04:51:59Z http://eprints.utm.my/id/eprint/71749/ Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light Xue, Q. Liu, Y. Zhou, Q. Utsumi, M. Zhang, Z. Sugiura, N. S Agriculture (General) Geosmin (GSM), a typical musty odor compound, causes undesirable earthy off-flavors and is a serious concern in the drinking water and aquaculture industries. Here, we employed a novel palladium (Pd) modified tungsten trioxide (WO3) photocatalyst to remove GSM from water under simulated solar light. We also investigated the effect of catalyst loading, GSM initial concentration, light intensity, pH and dissolved oxygen (DO) for GSM destruction. The Pd/WO3 catalyst almost completely degraded GSM within 20min under optimum conditions, with GSM degradation conforming to a pseudo-first-order reaction. This catalyst also exhibited a superior reuse performance. Photocatalytic degradation rate of GSM decreased in the presence of hydroxyl radical trapping reagent, implying oxidation by hydroxyl radicals plays a very significant role in the photo-degradation mechanism. Some possible intermediates were also identified. These results could provide helpful information for constructing a new efficient system for rapid GSM removal under solar light. Elsevier 2016 Article PeerReviewed Xue, Q. and Liu, Y. and Zhou, Q. and Utsumi, M. and Zhang, Z. and Sugiura, N. (2016) Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light. Chemical Engineering Journal, 283 . pp. 614-621. ISSN 1385-8947 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939454110&doi=10.1016%2fj.cej.2015.08.016&partnerID=40&md5=19f13775cd69c233d0d3a3acaf3202ba
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic S Agriculture (General)
spellingShingle S Agriculture (General)
Xue, Q.
Liu, Y.
Zhou, Q.
Utsumi, M.
Zhang, Z.
Sugiura, N.
Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light
description Geosmin (GSM), a typical musty odor compound, causes undesirable earthy off-flavors and is a serious concern in the drinking water and aquaculture industries. Here, we employed a novel palladium (Pd) modified tungsten trioxide (WO3) photocatalyst to remove GSM from water under simulated solar light. We also investigated the effect of catalyst loading, GSM initial concentration, light intensity, pH and dissolved oxygen (DO) for GSM destruction. The Pd/WO3 catalyst almost completely degraded GSM within 20min under optimum conditions, with GSM degradation conforming to a pseudo-first-order reaction. This catalyst also exhibited a superior reuse performance. Photocatalytic degradation rate of GSM decreased in the presence of hydroxyl radical trapping reagent, implying oxidation by hydroxyl radicals plays a very significant role in the photo-degradation mechanism. Some possible intermediates were also identified. These results could provide helpful information for constructing a new efficient system for rapid GSM removal under solar light.
format Article
author Xue, Q.
Liu, Y.
Zhou, Q.
Utsumi, M.
Zhang, Z.
Sugiura, N.
author_facet Xue, Q.
Liu, Y.
Zhou, Q.
Utsumi, M.
Zhang, Z.
Sugiura, N.
author_sort Xue, Q.
title Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light
title_short Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light
title_full Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light
title_fullStr Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light
title_full_unstemmed Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light
title_sort photocatalytic degradation of geosmin by pd nanoparticle modified wo3 catalyst under simulated solar light
publisher Elsevier
publishDate 2016
url http://eprints.utm.my/id/eprint/71749/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939454110&doi=10.1016%2fj.cej.2015.08.016&partnerID=40&md5=19f13775cd69c233d0d3a3acaf3202ba
_version_ 1643656270850293760
score 13.211869

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