Patent ID: 9028696
Filing Date: 2015-05-12
Classification: B01D,C02F,C11B,C12N,Y02E,Y02W

Abstract:
1. A method for obtaining an oleaginous composition from biomass, by a hydrothermal process comprising: (a) obtaining a feedstock comprising said biomass and water; (b) heating the feedstock in a closed reaction vessel to a first temperature between about 250° C. and about 360° C. at a pressure sufficient to prevent a vaporization phase change of the water, said pressure being at least 1 MPa, and holding at said first temperature for a time between 0 minutes and about 90 minutes; (c) cooling the feedstock of (b) to a temperature between ambient temperature and about 150° C.; (d) acidifying the cooled feedstock of (c) to a pH from about 3.0 to less than 6.0 to produce an acidified composition; (e) holding the acidified composition of (d) to at a second temperature of between about 40° C. and about 150° C. and holding for between 1 minute and about 240 minutes; (f) separating the acidified composition into at least a first aqueous phase and an oil phase; and (g) removing the first aqueous phase from the oil phase.