Co-fermentation of Sewage Sludge and CO2 Boosted by Alcohol-containing Bioliquids: Enhancing Biomethane Production in a Two-phase Anaerobic Digestion Process.

C. Salomoni, A. Caputo, M. Bonoli, O. Francioso, M.T. Rodriguez-Estrada & D. Palenzona
Two-phase anaerobic digestion (TPAD) is an efficient technology for energy recovery from biomass and wastes, and represents an interesting contribution to address fossil fuels substitution. The use of CO2 to improve solid degradation and methane production in the anaerobic digestion has been described for sewage sludge, as a result of a long-term R&D activity. The work is now focused on valorization of synergic effects of CO2 and biomasses, such as alcohol-containing bioliquids. Different combination of...