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Permanent link (DOI): https://doi.org/10.7939/R3MG7X

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Determination of biokinetic parameters of wastewater biofilms from oxygen concentration profiles Open Access

Descriptions

Other title
Subject/Keyword
Biofilms
Biokinetic parameters
Oxygen concentration profiles
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Okafor, Sabinus
Supervisor and department
Yu, Tong (Civil and Environmental Engineering)
Examining committee member and department
Ulrich, Ania (Civil and Environmental Engineering)
Foght, Julia ( Biological Sciences)
Department
Department of Civil and Environmental Engineering
Specialization

Date accepted
2011-08-31T18:00:50Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
The process of scale-up and rational optimization of biofilm processes for effective wastewater treatment and reuse require better understanding of the biokinetic behavior of microorganisms in the biofilms. At present, no fast and accurate methods exist for determining kinetic parameters for biofilm systems. This study presents a modified approach to quantify biofilm kinetic parameters from oxygen concentration profiles measured in membrane-aerated biofilms (MABs) and rotating biological contactors (RBC) biofilms. The calculated values of Monod’s half-saturation coefficient (Ks) for oxygen consumption and maximum utilization rate of oxygen (µm/Y) in MABs were estimated to be 2.01 mg O2/cm3 and 6.50×10-8 mgO2/gVS∙s, respectively. And, the values of first-order kinetic coefficient, (µm/Y)/Ks, in MABs and RBC biofilms were in the range of (0.62-1.43)×10-6 and (0.36-5.55)×10-5cm3/gVS∙s, respectively. The biofilm kinetic parameters obtained in this study were found to differ from the same parameters in activated sludge systems, which show that more experimental data for kinetic parameters in biofilms are required.
Language
English
DOI
doi:10.7939/R3MG7X
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.
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File title: University of Alberta
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