Feasibility Study of Anaerobic Codigestion of Municipal Organic Waste in Moderately Pressurized Digesters: A Case for the Russian Federation

Anaerobic digestion (AD) is a promising option to obtain renewable energy in the form of biogas and reduce anthropogenic impact on environment. In recent years there has been increasing interest using pressurized digesters improve quality biogas. However, maintaining high overpressure increases requirements for explosion safety digesters. Consequently, are natural limitations available technologies facilities suitable full-scale operation. this work, we aimed evaluate possibility digester efficiency codigestion common municipal organic waste–sewage sludge fraction solid waste. Three levels moderate excess pressure (100, 150 200 kPa) were used meet existing block-modular anaerobic bioreactors based railway tanks, which widely utilized AD Russian Federation. There was no significant change methane content (65% ± 3%) at different values overpressure, hydraulic retention time (HRT) loading rate (OLR). The maximum production rates (2.365 L/(L?day) 94.27 kJ/(L?day), respectively) obtained an kPa, HRT 5 days OLR 14 kg VS/(m3?day). yield (202.44 mL/g VS), (8.07 kJ/g VS) volatile solids (VS) removal (63.21%) recorded 7 10.4 pressured conditions showed better performance terms stability OLRs.