METHOD TO REDUCE GHG EMISSIONS OF FUEL PRODUCTION

摘要

The present invention provides a method comprising carrying out an anaerobic digestion that produces biomethane and biogenic carbon dioxide and supplying the biogenic carbon dioxide for use in one or more enhanced oil or gas recovery operations. The biogenic carbon dioxide supplied to the one or more enhanced oil or gas recovery operations displaces the use of geologic carbon dioxide. Further provided is a method to reduce the life cycle GHG emissions associated with the production of a liquid fuel or fuel intermediate in a fuel production facility by providing such biomethane for use in the fuel production facility or associated utilities to supply energy. The present invention also relates to a method for receiving carbon dioxide at an enhanced oil or gas recovery site that has the GHG emission attributes of the biogenic carbon dioxide and using the received carbon dioxide to displace geologic carbon dioxide.