Ammonia and Biogas from Anaerobic and Sewage Digestion for Novel Heat, Power and Transport Applications—A Techno-Economic and GHG Emissions Study for the United Kingdom

Anaerobic digestion (AD) and sewage sludge (SD) plants generate significant quantities of ammoniacal nitrogen in their digestate liquor. This article assesses the economic viability CO2 abatement opportunity from utilisation this ammonia under three scenarios proposes potential for uptake United Kingdom. Each state-of-the-art process route recovers uses it alongside AD-produced biomethane different end goals: (1) production H2 as a bus transport fuel, (2) injection to gas grid (3) generation heat power via solid oxide fuel cell technology. A rigorous assessment UK anaerobic facilities revealed fleet scenario most attractive option, with 19 SD 42 AD existing suitable scale implementation. is compared 3 SD/1 13 SD/23 applicable aim SOFC processing, respectively. GHG emission analysis found that new using NWaste2H2 technology could enable reductions up 4.3 3.6 kg CO2e each bio-CH4 supplied feedstock plants,