Anaerobic Digestion of Poultry Droppings in Semi-Continuous Mode and Effect of Their Co-Digestion with Physico-Chemical Sludge on Methane Yield

Poultry waste is rich in organic matter, which allows its treatment by the process of anaerobic digestion (AD) to reinforce economic and environmental green strategies. The aim this study assess technical feasibility poultry AD semi-continuous mode intensify methane production co-digestion with physico-chemical sludge, i.e., product primary wastewater after slaughtering process. First, droppings conducted a continuous stirred digester (CSAD) at 37 °C. A volume 0.791 0.623 Nm3·Nm−3 reactor·days−1 biogas methane, respectively, were produced during entire stabilization period. Biochemical characterization substrate final digestate show high reduction rates biochemical fractions, corroborates yield. In addition, two different ratios sludge (20% 40% added considering amount volatile solids) shows an increase versus alone, higher 54% ratio 40%. Altogether, these promising results obtained stable processes, highlighting pertinence our study.