Inhibition kinetics of a commercial mixed culture by ammonium sulfate |
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| Institution: | 1. Chemical Engineering Department, Faculty of Engineering, Hacettepe University, Beytepe 06532, Ankara, Turkey;2. Chemistry Department, Hacettepe University, Beytepe 06532, Ankara, Turkey;1. Faculty of Bioscience Engineering, KU Leuven, Belgium;2. Statistics and Decision Sciences, Janssen Pharmaceutica, Belgium;3. Faculty of Applied Economics, Universiteit Antwerpen, Belgium;1. Dale A. Seiberling Food Engineering Laboratory, Department of Food Science and Technology, The Ohio State University, Columbus, 43210, USA;2. Dale A. Seiberling Food Engineering Laboratory, Department of Food, Agricultural and Biological Engineering, The Ohio State University, Columbus, 43210, USA;1. Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague 6, Czech Republic;2. Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague 6, Czech Republic;3. Forensic Laboratory of Biologically Active Substances, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague 6, Czech Republic;1. Department of Mechanical Engineering, 10-263 Donadeo Innovation Centre for Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada;2. Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;3. School of Mechanical and Aerospace Engineering, Queen''s University Belfast, Belfast, BT9 5AH, UK;1. Biochemical Processing and Biomaterial Research Laboratory, Gazi University, Teknikokullar, 06500 Ankara, Turkey;2. Department of Chemistry, Faculty of Sciences, Gazi University, Teknikokullar, 06500 Ankara, Turkey;3. School of Medicine, Istanbul Kemerburgaz University, 34217 Istanbul, Turkey;4. Hacettepe University, Department of Chemistry, 06800 Ankara, Turkey |
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| Abstract: | The inhibitory effect of ammonium sulfate on a commercial mixed culture, used in biological waste-water treatment was studied under aerobic batch conditions. Several mathematical models of enzyme and growth kinetics including a death factor were analyzed through nonlinear regression to find the best fit to corresponding data of inhibition. The best fit model was found to be the generalized Monod type with a death factor having the biokinetic parameters; μmax 0.681 h−1, Ks 0.224 g dm−3, Ki 56240 g dm−3, K 0.055 g dm−3 and kd 0.052 h−1 to represent the experimental data accurately. The low saturation coefficient value along with high maximum specific growth rate and inhibition coefficient denotes the competitive characteristics of commercial mixed cultures in the biological treatment of high ammonium polluted waste waters. |
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