Peer-Reviewed Journal Details
Mandatory Fields
Chan Gutierrez, E., Wall, D.M., O'Shea, R., Gomez, M.M., Murphy, J.D.
Journal Of Cleaner Production
An economic and carbon analysis of biomethane production from food waste to be used as a transport fuel in Mexico
In Press
Optional Fields
Food wasteBiomethaneGreenhouse gas emissionsTransport fuelLCOE
Biomethane produced from food waste is a potential fuel for urban buses in Mexico to reduce greenhouse gas (GHG) emissions in transport. Biomethane from food waste can potentially produce 42.32 PJ per year, equivalent to 6.5% of the energy content of diesel used in transport in 2015. By replacing diesel with biomethane from food waste, a reduction of 17.91 MtCO2e can be effected, 6.06% of the 2050 GHG emissions target. The economic feasibility of a biomethane plant for a Mexican city was investigated using two scenarios: co-digestion of food waste and sewage sludge (scenario 1); and co-digestion of food waste and pig slurry (scenario 2), both scenarios utilising anaerobic high density polyurethane digesters. Economic performance based on net present value (NPV) gave a positive outcome for scenario 1 with 33% of the revenue coming from gate fees. The levelised cost of energy (LCOE) for biomethane was $US 11.32/GJ ($US 40c/m3 CH4). Scenario 2 has a negative NPV; to break even (LCOE) biomethane has to be sold at $US 14.38/GJ ($US 51 c/m3 CH4). Biomethane from scenario 2 can be economically viable if a subsidy of $US 1.38/GJ is applied, equivalent to 5% of the cost of diesel.
Grant Details
Science Foundation Ireland