Patent ID: 8092680
Filing Date: 2012-01-10
Classification: C02F,C05F,C05G,C12F,C12M,C12P,Y02A,Y02E,Y02P,Y02W

Abstract:
1. A method comprising: providing a biomass as a feed stream; aerobically hydrolyzing at least a portion of the feed stream in a hydrolysis stage; transferring at least a portion of the feed stream after hydrolysis to an acidifying stage; anaerobically acidifying in the acidifying stage at least a portion of the feed stream at a first temperature; transferring at least a portion of the feed stream after acidifying to a thermophilic stage; and anaerobically converting at least a portion of the feed stream in the thermophilic stage at a second temperature, the thermophilic stage having heat input, wherein converting includes forming at least acetic acid, methane and carbon dioxide.