Title:
Biogas Optimization by Use of a Greenhouse
Author(s):
Mzobotshe, M., Mukumba, P.
Document(s):
Paper
Poster
Abstract:
Biogas production is a sustainable and eco-friendly approach to managing organic waste while generating renewable energy. However, maintaining optimal digestion temperatures remains a significant challenge, particularly in colder climates or during seasonal fluctuations. This study investigates the integration of a greenhouse structure on a batch mode mono-digestion balloon biodigester as a passive thermal enhancement strategy to optimize biogas production. By enclosing the biogas digester within a greenhouse, solar radiation is harnessed to naturally elevate and stabilize internal temperatures, thereby promoting microbial activity and enhancing biogas yield. The pH, chemical oxygen demand (COD), global solar irradiance, relative humidity, ambient temperature, temperature inside the greenhouse, and the temperature of the slurry were all monitored daily. The analysis revealed that there was no significant difference between the measured daily biogas yield and the predicted values throughout the hydraulic retention period, as indicated by a determination coefficient of 0.985 and a root mean square error of 0.0239. These results support the conclusion that the nonlinear response surface model is capable of accurately forecasting biogas yield, given the satisfactory values of both performance metrics.
Keywords:
methane, temperature, biogas digester, determination coefficient, response surface model
Topic:
Industry Track
Subtopic:
Biological biomass conversion
Event:
33rd European Biomass Conference and Exhibition
Session:
IDV.3.28
Pages:
1243 - 1248
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-IDV.3.28
Price:
FREE
