Optimization of Biogas Production from Sewage Sludge: Impact of Combination with Bovine Dung and Leachate from Municipal Organic Waste

Biogas is a bioenergy produced from organic or all types of biological degradable wastes and could make it possible to limit energy dependence. Sludge the best alternative substrate for biogas production at community-level plant. The literature shows that co-digestion can increase efficiency sludge anaerobic digestion. This research, thus, focused on (i) determining conditions optimal in primary (PS) bovine dung (BD), (ii) evaluating impact leachate waste cellulose production. Primary was collected Bacau town wastewater treatment plant Romania. sampling municipal solid carried out Ouagadougou pre-collect centers (Burkina Faso). Batch tests were conducted glass bottles through digestion (1 L). following parameters monitored during process: pH, volatile fatty acid (VFA), solids (VS) sludge, showed 50.51%, 72.41% 70.48% content, respectively. good stability, unlike other two substrates, such as leachate, with VFA alkalinity ratio 0.54. Leachate had high values > 3600. Co-digestion raise levels matter improve microbial growth stability biomass. yield 152.43 mL/g VS obtained combination 30% 70% 45 °C, 21.57% reduction matter. An improvement productivity effective addition which be used an additive element