Quantitative analysis of microbial biomass yield in aerobic bioreactor |
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| Authors: | Osamu Watanabe Satoru Isoda |
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| Institution: | 1. EcoInformatics Association, 1-24-2 Sumiredai, Nishinomiya, Hyogo 651-1432, Japan;2. Advanced Science Research Laboratory, Saitama Institute of Technology, 1690 Fusaiji, Hukaya, Saitama 369-0293, Japan;1. Université de Carthage, Laboratoire d’Ecologie et de Technologie Microbienne, INSAT, B.P. 676, 1080 Tunis, Tunisia;2. Université de Tunis El Manar, ISSBAT, 9, Avenue Zouhaïer Essafi, 1006 Tunis, Tunisia;3. Universités de Provence et de la Méditerranée, Laboratoire de Microbiologie, UMR 180, IRD, 163, Avenue de Luminy, 13288 Marseille Cedex 9, France;4. INRA U050, Laboratoire de Biotechnologie de l’Environnement, Avenue des Étangs, F-11100 Narbonne, France;1. Department of Civil and Environmental Engineering, Michigan State University, 428 S. Shaw Lane, East Lansing, MI, USA;2. Department of Chemical Engineering & Materials Science, Michigan State University, 428 S. Shaw Lane, East Lansing, MI, USA;1. Institute of Physics of Materials, AS CR, ?i?kova 22, CZ-616 62 Brno, Czech Republic;2. Department of Physics and Nanotechnology Centre, VSB-Technical University of Ostrava, 17. listopadu 15, CZ-708 33 Ostrava-Poruba, Czech Republic;1. Department of Materials and Metallurgical Engineering, Engineering Faculty, Semnan University, 35131-19111, Iran;2. Department of Mechanics, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 2077/7, 166 29 Prague, Czechia |
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| Abstract: | We have studied the integrated model of reaction rate equations with thermal energy balance in aerobic bioreactor for food waste decomposition and showed that the integrated model has the capability both of monitoring microbial activity in real time and of analyzing biodegradation kinetics and thermal-hydrodynamic properties. On the other hand, concerning microbial metabolism, it was known that balancing catabolic reactions with anabolic reactions in terms of energy and electron flow provides stoichiometric metabolic reactions and enables the estimation of microbial biomass yield (stoichiometric reaction model). We have studied a method for estimating real-time microbial biomass yield in the bioreactor during food waste decomposition by combining the integrated model with the stoichiometric reaction model. As a result, it was found that the time course of microbial biomass yield in the bioreactor during decomposition can be evaluated using the operational data of the bioreactor (weight of input food waste and bed temperature) by the combined model. The combined model can be applied to manage a food waste decomposition not only for controlling system operation to keep microbial activity stable, but also for producing value–added products such as compost on optimum condition. |
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| Keywords: | food waste compost biomass yield bioenergetics reaction rate aerobic biodegradation modeling bioreactor |
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