Patent ID: 8247009
Filing Date: 2012-08-21
Classification: B01D,C12P,Y02A,Y02C,Y02E,Y02P

Abstract:
1. A method for generating methane from a carbonaceous feedstock with simultaneous sequestration of carbon dioxide, the method comprising anaerobically incubating a particulate alkaline earth metal salt in contact with a particulate and/or dissolved carbonaceous feedstock in a neutral or alkaline aqueous culture medium containing a culture of methanogenic bacteria consortia, and collecting methane generated therefrom; wherein at least a portion of carbon dioxide produced during the incubation reacts with the alkaline earth metal salt to form an alkaline earth metal carbonate, thereby sequestering the carbon dioxide, and the particulate alkaline earth metal salt is present in a quantity sufficient to maintain a basic pH and to sequester an amount of generated carbon dioxide such that the collected methane has a carbon dioxide content of less than about 15 percent by weight based on the weight of the methane.