Oxidation of pesticides in water by fenton and photo-fenton reactions

Kassinos, D; Constantinou, M; Varnava, N; Papadopoulos, A; Vlachos, S; Mantzavinos, D

dc.contributor.author	Kassinos, D	en
dc.contributor.author	Constantinou, M	en
dc.contributor.author	Varnava, N	en
dc.contributor.author	Papadopoulos, A	en
dc.contributor.author	Vlachos, S	en
dc.contributor.author	Mantzavinos, D	en
dc.date.accessioned	2014-03-01T01:28:58Z
dc.date.available	2014-03-01T01:28:58Z
dc.date.issued	2008	en
dc.identifier.issn	1203-8407	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19055
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-58749101421&partnerID=40&md5=f64aaa38608096cfc2b1634655ca1e29	en
dc.subject	Fenton	en
dc.subject	Kinetics	en
dc.subject	Oxidation	en
dc.subject	Pesticides	en
dc.subject	Photo-Fenton	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.other	SOLID-PHASE EXTRACTION	en
dc.subject.other	ATRAZINE DEGRADATION	en
dc.subject.other	WASTE-WATER	en
dc.subject.other	PHOTOCATALYTIC REMOVAL	en
dc.subject.other	GAS-CHROMATOGRAPHY	en
dc.subject.other	MODEL APPLICATIONS	en
dc.subject.other	SURFACE WATERS	en
dc.subject.other	FENITROTHION	en
dc.subject.other	METABOLITES	en
dc.subject.other	QUANTIFICATION	en
dc.title	Oxidation of pesticides in water by fenton and photo-fenton reactions	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The degradation of four pesticides, namely atrazine (ATZ), fenitrothion (FNT), 4-chloro-2-methyl- phenoxyacetic acid (MCPA) and 4-chlorophenoxyacetic acid (CPA) by Fenton and UVA-induced photo-Fenton reactions was investigated. Experiments were conducted at pH 3-3.5 and various Fe(II) and H 2O2 concentrations in the range 0.088-0.45 mM and 1.74-33.2 mM respectively. In general, total organic carbon (TOC) removal increased with increasing oxidant concentration, while the effect of catalyst concentration was less pronounced. ATZ was considerably refractory to total oxidation which can be approached by a two-stage, second order kinetic expression. The other three pesticides were more readily oxidizable than ATZ following pseudo-first order kinetics. UVA irradiation improved substantially the rate of the corresponding dark reaction; for instance, complete TOC removal was achieved after 120 min of FNT photo-Fenton oxidation at 33.2 mM H 2O2 concentration, with the respective value for the dark run being 55%. For ATZ, the respective values were 75 and 40%. © 2008 Science & Technology Network, Inc.	en
heal.publisher	SCIENCE & TECHNOLOGY NETWORK INC	en
heal.journalName	Journal of Advanced Oxidation Technologies	en
dc.identifier.isi	ISI:000257999500008	en
dc.identifier.volume	11	en
dc.identifier.issue	2	en
dc.identifier.spage	246	en
dc.identifier.epage	253	en