Combination of anaerobic treatment of carbonaceous material with hydrothermal gasification to maximize value added product recovery

An installation for treating carbonaceous material, said installation comprising:

• a HTG reactor suitable for hydrothermal gasification, having a first inlet (Icm) and a first (Os), second (Og1) and third (Of1) outlets, the HTG reactor being configured to be fed at the first inlet (Icm) with a carbonaceous material CM, and to produce:
• an inorganic solid residue, recovered at the first outlet (Os),
• a first gaseous fraction G1 comprising CH4, CO, CO2 and H2 recovered at the second outlet (Og1), and
• a filtrate F1, optionally containing readily biodegradable carbons such as VFAs, recovered at the third outlet (Of1),
• and
• an anaerobic tank, suitable for fermentation or anaerobic digestion, having a first inlet (Il), and a first outlet (Od),
• the first inlet (Il) being in fluid connection with the third outlet (Of1) of the HTG reactor, the anaerobic tank being configured to be fed at the first inlet (Il) with filtrate F1, and to produce:
• a digestate at the first outlet (Od).