title: Photochemical degradation of 1,3-dichloro-2-propanol aqueous solutions.
abstract: The photochemical oxidation of 1,3-dichloro-2-propanol (1,3-DCP) was studied by following the target compound degradation, the total carbon removal rate by a total organic carbon (TOC) analyzer and by identifying the oxidation products by gas chromatography-mass spectrometry (GC-MS). The reaction was performed in a batch recycle reactor, at room temperature, using UV radiation provided by a low pressure 12W Hg lamp and H(2)O(2) as oxidant. Chloride ions, formic, acetic and chloroacetic acid were measured by ion chromatography. Apart from the chloride ions and the organic acids, the presence of 1,3-dichloro-2-propanone and chloroacetyl chloride was also detected and a possible pathway is proposed for the degradation of the parent compound. Complete degradation of 1,3-dichloro-2-propanol was achieved and the TOC removal reached as much as 80% at the end of the reaction time. The effect of the initial concentration of hydrogen peroxide was investigated and it was established that higher concentrations of H(2)O(2) slow down the reaction rate. Finally, the effect of the initial concentration of 1,3-DCP was investigated.
authors.affiliation: Chemical Process Engineering Laboratory, Department of Chemical Engineering, National Technical University, 9 Heroon Polytechniou Str., Zografou Campus, 157 80 Athens, Greece.
authors.forename: M D
authors.initials: MD
authors.lastname: Nikolaki
authors.forename: C J
authors.initials: CJ
authors.lastname: Philippopoulos
mesh_terms: D006861:Hydrogen Peroxide / Q000737:chemistry; D016877:Oxidants / Q000737:chemistry; D010782:Photolysis; D012996:Solutions; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects*; D018508:Water Purification / Q000379:methods; D000517:alpha-Chlorohydrin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000528:radiation effects
chemical_list: D016877:Oxidants; D012996:Solutions; D014874:Water Pollutants, Chemical; C033489:1,3-dichloro-2-propanol; D000517:alpha-Chlorohydrin; D006861:Hydrogen Peroxide