Effect of hydrochar from acid hydrolysis on anaerobic digestion of chicken manure

Acid hydrolysis is a key process for the production of platform chemicals from biomass, however solid residues by-products can amount to 50 wt% starting biomass material. In this study, biofuel precursor levulinic acid were generated via microwave-assisted Miscanthus x Giganteus and investigated supplementation anaerobic reactors digesting Chicken Manure. The addition increased methane yields by up 14.1%, depending on additive concentration levels, 2–10 g/L. A mild ammonium related inhibition was observed during fermentation trials, which mitigated residue additive. An experimental optimum 6 g/L found corresponded with 20% decrease in concentrations microbial diversity, where phyla Bacteroidetes Firmicutes most prevalent, whilst relative abundance Archaea (Euryarchaeota) decreased without negative effects production. catalysis conditions properties chicken manure evaluated. All solids exhibited absorption improved diversity digestion. integration digestion downstream second generation biorefineries promising green waste disposal method thermo-catalytic processes. • Residual microwave exhibits hydrochar properties. Solid increases 14%. improves reduces concentrations. Inhibition at harsher conditions.