A parametric experimental validation of a biorefinery concept based on anaerobic digestion of fruit and vegetable waste

The goal of this paper was to assess the possibilities for one-stage reactor anaerobic digestion processing fruit and vegetable biomass within a biorefinery concept optimum products. Co-digestion simplest strategy implement increase product yield among variables tested (pH, ultrasonification, co-digestion). Methane yields from co-digestion waste (FVW) pig manure (PM) ranged 318 434 NmL /g VS, with highest (434 VS) achieved at ratio FVW75:PM25, representing 20% over methane production FVW alone. pH value determined be most effective variable enhancing production, = 8 producing maximum cumulative 497 NmL/g VS. There no significant change in composition volatile fatty acids (VFA) terms dominant type; valeric acid predominant VFA synthesized all starting values except 12, where formic formed. As digestate post-treatment procedure, hydrothermal carbonization combined digestion. At 200 °C, hydrochar 58.2%, higher heating 10.75 MJ/kg. © 2022 Authors. Biofuels, Bioproducts Biorefining published by Society Industrial Chemistry John Wiley & Sons Ltd.