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Study of UV/Chlorine Photolysis in regard to the Advanced Oxidation Processes (AOPs) Open Access


Other title
Advanced oxidation, chlorine photolysis, hydroxyl radicals, methanol, p-chlorobenzoic acid, cyclohexanoic acid
Type of item
Degree grantor
University of Alberta
Author or creator
Jin, Jing
Supervisor and department
Mohammed Gamal El-Din (Department of Civil and Environmental Engineering)
James R. Bolton (Department of Civil and Environmental Engineering)
Examining committee member and department
Jonathan G. C. Veinot (Department of Chemistry)
Yang Liu (Department of Civil and Environmental Engineering)
Department of Civil and Environmental Engineering

Date accepted
Graduation date
Master of Science
Degree level
This thesis aims mainly at investigating the potential oxidizing abilities and possible applications of the UV/Chlorine process as an Advanced Oxidation Process (AOP). Several organic compounds were used and added into the samples as challenging radical scavengers to investigate the possibilities of the UV/Chlorine process being used in the water and wastewater treatment industry. The UV/H2O2 process was selected as a reference, and experiments were carried out parallel; the results obtained earlier in the UV/Chlorine process were compared to those of the UV/H2O2 process. Methanol was added into active chlorine solutions at both pH 5 and 10. The quantum yields for the degradation of active chlorine were calculated after the samples had been exposed to UV. Also the production of ∙OH radicals was calculated by determining the generation of formaldehyde. The OH radical yield factors, which are significant in evaluating AOPs, were calculated both in the UV/Chlorine and the UV/H2O2 processes. In addition to methanol, para-chlorobenzoic acid (pCBA) and cyclohexanoic acid (CHA) were added to active chlorine solutions and to H2O2 solutions. The first-order reaction rate constants for the oxidation of pCBA and CHA using the UV/Chlorine process were calculated and compared to those of the UV/H2O2 process. This allowed an evaluation of whether or not the UV/Chlorine process might be efficient for the treatment of contaminated water samples containing pCBA and/or CHA. Finally the thesis comes to a general conclusion about the efficiency of the UV/Chlorine process compared to that of the UV/H2O2 process.
License granted by Jing JIN ( on 2010-08-13T22:49:49Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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