Agronomy, Journal Year: 2024, Volume and Issue: 14(11), P. 2546 - 2546

Published: Oct. 29, 2024

Organic waste has the potential to produce methane gas as a substitute for petrol-based fuels, while reducing landfilling and possible environmental pollution. Generally, anaerobic digestion (AD) is used only in wastewater treatment plants tertiary stage of sewage sludge treatment, generating fraction energy that such process require. In this study, four different wastes—food (FW), dairy industry (DIW), brewery (BW), cardboard (CBW)—were tested biogas production. The biochemical (BMP) each sample was evaluated using an automatic system (AMPTS). Operating parameters pH, temperature, total solids, volatile solids were measured. Experiments on samples monitored under mesophilic conditions (temperature 37 °C, retention time 30 days). Specific yields (SMYs), well theoretical (BMPth), calculate biodegradability substrates, obtaining highest BW at 95.1% producing 462.3 ± 1.25 NmL CH4/g (VS), followed by FW inoculum-to-substrate ratio (ISR) 2 84% 391.3 NmLCH4/g VS. BMP test 1 heavily inhibited bacteria overloading easily degradable organic matter, production 106.3 VS index 24.8%. kinetic modeling study demonstrated best-fitting model modified Gompertz model, presenting coefficient determination (R2) values, lowest root means square error (RMSE) values five best specific yield estimation with percentage difference ranging from 0.3 3.6%.

Language: Английский