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Measuring Biomethane Potential of Food Scrap Waste Anaerobically Co-Digested with Waste-Activated Sludge Using Respirometry
Published on: April 26, 2024
Thermophilic semisolid anaerobic digestion of municipal refuses
P Marique1, A Gilles, F Edeline
1Unité de Microbiologie Industrielle, Université de Liège B23, B-4000 LIEGE-Sart Tilman, Belgium.
Abstract:
Comparison of both mesophilic (35 degrees C) and thermophilic (55 degrees C) anaerobic digestions of the organic fraction of municipal refuses in pilot digesters designed to process in a semisolid phase at total solids concentrations of ca. 25% shows that the average gas production is 20-25% higher in thermophilic conditions than in mesophilic conditions even for a retention time of 10 days. These results and the data recorded during long periods of experimentation indicate that the process allows to increase the net energy production and to improve the economical balance of an industrial plant.
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