(35b) Carbon Footprint Analysis of Biomethane from Anaerobic Digestion of a Food Waste / Manure Mixture in Colorado
AIChE Annual Meeting
Sunday, November 13, 2016 - 3:55pm to 4:20pm
After including emission credits for avoiding landfill emissions of CO2 and CH4, bio-methane emits over its life cycle -3.5 kg CO2 equivalents / kg bio-methane, thus reducing global warming effect with each unit of production of bio-methane. This favorable emission intensity is compared to that of fossil methane of between 3.3 to 5.1 kg CO2 equivalents / kg fossil methane. Effects of life cycle system parameters in the model on GHG results are investigated in scenario analyses and also in time dependent analysis of landfill emissions.