Improvement of biodegradation in compact co-current biotrickling filter by high recycle liquid flow rate: Performance and biodegradation kinetics of ammonia removal |
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| Institution: | 1. Department of Animal Industry Engineering, Bio-oriented Technology Research Advancement Institute, National Agriculture and Food Research Organization, 1-40-2 Nisshin, Saitama, Saitama 331-8537, Japan;2. Business Development Promotion Office, Panasonic Environmental Systems & Engineering Corporation, 2-12-26 Kounan, Minato, Tokyo 108-0075, Japan;3. Energy-Saving Products Technology & Development Group, NICHIAS Corporation, 1-6-1 Hatchobori, Chuo-ku, Tokyo 104-8555, Japan;1. Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK;2. Advanced Plasma Power, South Marston Business Park, Swindon SN3 4DE, UK;1. Department of Chemical Engineering, NTNU, Sem Sælandsvei 4, N-7491 Trondheim, Norway;1. Department of Engineering, Faculty of Science and Technology, Aarhus University, Hangøvej 2, Aarhus N 8200-DK, Denmark;2. Department of Food Science, Faculty of Science and Technology, Aarhus University, Blichers Allé 20, Tjele 8830-DK, Denmark;3. Danish Agriculture & Food Council, Pig Research Centre, Axeltorv 3, Copenhagen V 1609-DK, Denmark;4. Saint-Gobain Weber A/S, Randersvej 75, Hinge, Randers SV 8940-DK, Denmark;1. GENOCOV, Departamentd’Enginyeria Química, UniversitatAutònoma de Barcelona, Edifici Q, Campus de Bellaterra, 08193 Bellaterra, Barcelona, Spain;2. Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana Cuajimalpa, México D.F., Mexico;3. Instituto de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, México D.F., Mexico;4. Departamentd’Enginyeria Minera i Recursos Naturals, Universitat Politècnica de Catalunya, Bases de Manresa 61-73, 08240 Manresa, Spain;5. Tecnológico de Estudios Superiores de Ecatepec, Ecatepec de Morelos, Mexico |
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| Abstract: | As a microbial-environmental-control-type deodorizing system, we have developed a compact biotrickling filter system for small-scale livestock farms. The performance of the compact co-current biotrickling filter operated at high recycle liquid flow rates was systematically examined. In particular, we studied improvements in the nitrification ability of the system due to the resultant enhancement of absorption and dissolution of NH3 and absorption of O2 with the high flow rates of recycle liquid flowing downward co-currently with gas flow. At the empty bed residence time of 50 s, almost complete removal of NH3 was obtained with recycle liquid flow rates of 103 and 205 L m?3 day?1 for 20 days while the inlet NH3 concentration was increased from 200 to 500 ppm. With a recycle liquid flow rate of 411 L m?3 day?1 the removal efficiency remained above 95% for 57 days while the inlet NH3 concentration was increased from 200 to 700 ppm. The biodegradation kinetics for NH3 removal was successfully analyzed using the Haldane substrate inhibition kinetics. The present data and kinetic analyses showed that the substrate inhibition was suppressed and the biodegradation of ammonia in the compact biotrickling filter could be improved by the high recycle liquid flow rate. |
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| Keywords: | Biotrickling filter Ammonia abatement Rock wool Pressure drop Substrate inhibition |
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