Photo-assisted oxidation of chlorophenols in aqueous solutions using hydrogen peroxide and titanium dioxide

Poulopoulos, SG; Philippopoulos, CJ

dc.contributor.author	Poulopoulos, SG	en
dc.contributor.author	Philippopoulos, CJ	en
dc.date.accessioned	2014-03-01T01:21:14Z
dc.date.available	2014-03-01T01:21:14Z
dc.date.issued	2004	en
dc.identifier.issn	1093-4529	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16145
dc.subject	H2O2	en
dc.subject	Photo-catalytic	en
dc.subject	Photo-Fenton	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Chlorine	en
dc.subject.other	Hydrogen peroxide	en
dc.subject.other	Iron compounds	en
dc.subject.other	Irradiation	en
dc.subject.other	Oxidation	en
dc.subject.other	Photocatalysis	en
dc.subject.other	Photooxidation	en
dc.subject.other	Solutions	en
dc.subject.other	Titanium dioxide	en
dc.subject.other	Catalyst concentration	en
dc.subject.other	Chlorophenols	en
dc.subject.other	Phenol degradation	en
dc.subject.other	Photo-catalytic oxidation	en
dc.subject.other	Phenols	en
dc.subject.other	4 chlorophenol	en
dc.subject.other	chlorine derivative	en
dc.subject.other	chlorophenol	en
dc.subject.other	hydrogen peroxide	en
dc.subject.other	oxidizing agent	en
dc.subject.other	phenol derivative	en
dc.subject.other	titanium dioxide	en
dc.subject.other	aqueous solution	en
dc.subject.other	article	en
dc.subject.other	catalysis	en
dc.subject.other	concentration response	en
dc.subject.other	degradation	en
dc.subject.other	oxidation	en
dc.subject.other	photooxidation	en
dc.subject.other	Chlorophenols	en
dc.subject.other	Coloring Agents	en
dc.subject.other	Disinfectants	en
dc.subject.other	Hydrogen Peroxide	en
dc.subject.other	Oxidants	en
dc.subject.other	Oxidation-Reduction	en
dc.subject.other	Phenol	en
dc.subject.other	Photochemistry	en
dc.subject.other	Titanium	en
dc.subject.other	Water Purification	en
dc.title	Photo-assisted oxidation of chlorophenols in aqueous solutions using hydrogen peroxide and titanium dioxide	en
heal.type	journalArticle	en
heal.identifier.primary	10.1081/ESE-120037840	en
heal.identifier.secondary	http://dx.doi.org/10.1081/ESE-120037840	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	In the present work, the efficiency of phenol and chlorophenol degradation under irradiation using hydrogen peroxide as oxidant and titanium dioxide powder as photo-catalyst was investigated. In the absence of titanium oxide, increased concentrations of hydrogen peroxide resulted in higher conversions. Generally, phenol was the most readily oxidized compound, whereas in excess of hydrogen peroxide, the more chlorine atoms were present in the ring, the less degradable the chlorophenol was, in terms of initial rate of oxidation. In the case of 4-chlorophenol, the catalytic photo-oxidation efficiency with hydrogen peroxide and titanium oxide was dependent on the catalyst concentration exhibiting a maximum at 0.025-0.05 g L-1 titanium oxide. The combined use of titanium oxide and hydrogen peroxide resulted in higher degree of oxidation compared to results obtained when using hydrogen peroxide. Finally, the presence of Fe(III) proved to be beneficial for the photo-catalytic oxidation only in the presence of hydrogen peroxide.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering	en
dc.identifier.doi	10.1081/ESE-120037840	en
dc.identifier.isi	ISI:000222215100002	en
dc.identifier.volume	39	en
dc.identifier.issue	6	en
dc.identifier.spage	1385	en
dc.identifier.epage	1397	en