Potential Greenhouse Gas Mitigation from Utilising Pig Manure and Grass for Hydrothermal Carbonisation and Anaerobic Digestion in the UK, EU, and China

Pig manure currently results in sizeable greenhouse gas emissions, during storage and spreading to land. Anaerobic digestion hydrothermal carbonisation could provide significant mitigation, as well generate renewable heat power (with anaerobic digestion), or a peat-like soil amendment product carbonisation). The mitigation potential associated with avoidance of pig the UK, EU, China, by products was herein determined. In each case, mono-conversion is compared co-conversion 50:50 mixture grass. displayed greater than all cases, co-processing grass greatly enhances potential. China has largest (129 MT CO2 eq), greatest per kg (1.8 kgCO2/kg volatile solids). energy grid carbon intensity impact on different approaches regions. generated large amounts from biogas offsets higher grid. Greenhouse savings have been calculated for reducing total emissions representation (1.05%), EU (0.92%), UK (0.19%). Overall, utilisation bring about substantial savings, especially through co-digestion countries farming industries intense mixes.