Pilot-scale experimental study demonstrates peak biogas production under mesophilic conditions, highlighting the critical role of operational temperature.
The research investigates how temperature and substrate composition impact anaerobic biogas production in a pilot-scale reactor. Anaerobic digestion is a vital process for converting organic substrates into biogas, mainly composed of methane and carbon dioxide. Temperature plays a crucial role in influencing this process. The experiment was conducted under mesophilic (35°C), thermophilic (55°C), and hyper thermophilic (80°C) conditions, using a pilot-scale reactor with a capacity of 50 liters and an effective volume of 40 liters. Key parameters, including biogas production, carbon and nitrogen content, carbon-to-nitrogen (C:N) ratios, pH levels, and biomass concentrations, were monitored throughout a 60-day operational period. The highest biogas production, reaching 6398 ml/d, occurred under mesophilic conditions. Scanning electron microscopy (SEM) and phylogenetic analysis were performed, revealing the presence of Methanococcus aeolicus species in the treated sludge. Received: 25 June 2024 Accepted: 31 July 2024 Published: 25 August 2024
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Balasubramanian et al. (2024) studied this question.
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