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Permanent link (DOI): https://doi.org/10.7939/R37H7V

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Solar-driven photoreactivation of microorganisms: Impacts of light source and water matrix Open Access

Descriptions

Other title
Subject/Keyword
Bacteria
Ultraviolet disinfection
River water
Photoreactivation
Fluence
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Shafaei, Shirin
Supervisor and department
Bolton, James R. (Civil and Environmental Engineering)
Gamal El-Din, Mohamed (Civil and Environmental Engineering)
Examining committee member and department
Perez Estrada, Leonidas (Civil and Environmental Engineering)
Gamal El-Din, Mohamed (Civil and Environmental Engineering)
Bolton, James R. (Civil and Environmental Engineering)
Department
Department of Civil and Environmental Engineering
Specialization
Environmental Engineering
Date accepted
2013-08-23T14:45:42Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
The inactivation fluence of a target wastewater plant in Alberta, Canada was determined in the laboratory and was found to be close to that reported by the target wastewater plant. The effect of inactivation fluence, effective reactivation fluence, temperature, and river water on the percent photoreactivation of total coliforms was investigated under both indoor and outdoor conditions. A concept, namely the ‘effective reactivation fluence’, based on weighting the spectral fluence rate by the action spectrum for photoreactivation, is introduced. Higher inactivation fluence and effective reactivation fluence decreased the percent photoreactivation of total coliforms, while higher temperature increased it. Also, the percent photoreactivation of total coliforms decreased on increasing the percent river water. In addition, the effect of various covers on the percent photoreactivation of total coliforms was studied representing higher percent photoreactivation of total coliforms by cutting off the UV-B portion of sunlight.
Language
English
DOI
doi:10.7939/R37H7V
Rights
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 these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before 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.
Citation for previous publication
Shafaei, S., Bolton, J.R., Gamal El-Din, M., (2012) “Photoreactivation of bacteria in a wastewater effluent”. CSCE Conference, Edmonton, Ca

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File author: Shirin
Page count: 116
File language: en-CA
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