Photocatalytic oxidation of 1,3-dichloro-2-propanol aqueous solutions with modified TiO2 catalysts

Nikolaki, MD; Zerva, CN; Philippopoulos, CJ

dc.contributor.author	Nikolaki, MD	en
dc.contributor.author	Zerva, CN	en
dc.contributor.author	Philippopoulos, CJ	en
dc.date.accessioned	2014-03-01T01:31:39Z
dc.date.available	2014-03-01T01:31:39Z
dc.date.issued	2009	en
dc.identifier.issn	0926-3373	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19866
dc.subject	1,3-Dichloro-2-propanol	en
dc.subject	Kinetic study	en
dc.subject	Photocatalysis	en
dc.subject	TiO2	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	1,3-Dichloro-2-propanol	en
dc.subject.other	2-propanol	en
dc.subject.other	Aqueous solutions	en
dc.subject.other	Chloride ions	en
dc.subject.other	Kinetic analysis	en
dc.subject.other	Kinetic study	en
dc.subject.other	Mineralization process	en
dc.subject.other	Photocatalytic oxidations	en
dc.subject.other	Reaction mechanism	en
dc.subject.other	Reaction pathways	en
dc.subject.other	Room temperature	en
dc.subject.other	Target compound	en
dc.subject.other	TiO	en
dc.subject.other	TiO	en
dc.subject.other	TOC removal	en
dc.subject.other	Total organic carbon removal	en
dc.subject.other	UV radiation	en
dc.subject.other	Batch reactors	en
dc.subject.other	Catalysts	en
dc.subject.other	Cerium	en
dc.subject.other	Chlorine compounds	en
dc.subject.other	Degradation	en
dc.subject.other	Fire hazards	en
dc.subject.other	Kinetic theory	en
dc.subject.other	Mineralogy	en
dc.subject.other	Organic acids	en
dc.subject.other	Organic carbon	en
dc.subject.other	Oxidation	en
dc.subject.other	Photocatalysis	en
dc.subject.other	Platinum	en
dc.subject.other	Propanol	en
dc.subject.other	Rate constants	en
dc.subject.other	Ultraviolet radiation	en
dc.subject.other	Formic acid	en
dc.title	Photocatalytic oxidation of 1,3-dichloro-2-propanol aqueous solutions with modified TiO2 catalysts	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apcatb.2009.02.018	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apcatb.2009.02.018	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The photochemical and photocatalytic oxidation of 1,3-dichloro-2-propanol (1,3-DCP, 0.024 M) was performed in a batch reactor, at room temperature, using UV radiation (254 nm), H2O2 (0.081 M and 0.163 M) as oxidant, and TiO2-based catalysts modified with platinum, cerium and iron (65 mg/Lcatalyst load). The profile of the oxidation of 1.3-DCP was followed by monitoring the target compound degradation, the total organic carbon removal and the chloride ion production and it was deduced that the addition of the catalysts enhances the mineralization process taking place during the oxidation with simultaneous 1,3-DCP conversion. Based on the oxidation intermediates detected a reaction pathway for the degradation of 1,3-DCP is proposed. Also, a seven-step reaction mechanism was proposed, according to which a total chlorinated intermediate was produced, that degraded further to chloroacetic, acetic and formic acids, while chloroacetic and acetic acids were mineralized with simultaneous production of formic acid. Finally, based on the proposed mechanism a kinetic analysis was conducted in order to calculate the respective rate constants and it was deduced that with the catalyst's addition, the direct mineralization of the chlorinated intermediate was enhanced increasing TOC removal, whereas formic acid was resistant to further degradation, posing an obstacle to the total mineralization of 1,3-DCP. (C) 2009 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Applied Catalysis B: Environmental	en
dc.identifier.doi	10.1016/j.apcatb.2009.02.018	en
dc.identifier.isi	ISI:000267380100011	en
dc.identifier.volume	90	en
dc.identifier.issue	1-2	en
dc.identifier.spage	89	en
dc.identifier.epage	98	en