US 9,809,781 B1
Thermal fractionation of biomass of non-lignocellulosic origin for multiple high-quality biofuels
Balakrishna Maddi, Toledo, OH (US); Sridhar Viamajala, Toledo, OH (US); and Sasidhar Varanasi, Toledo, OH (US)
Assigned to The University of Toledo, Toledo, OH (US)
Filed by The University of Toledo, Toledo, OH (US)
Filed on Jan. 5, 2015, as Appl. No. 14/589,405.
Application 14/589,405 is a continuation in part of application No. 13/294,510, filed on Nov. 11, 2011, granted, now 8,927,240, issued on Jan. 6, 2015.
Claims priority of provisional application 61/413,177, filed on Nov. 12, 2010.
This patent is subject to a terminal disclaimer.
Int. Cl. C11B 1/10 (2006.01); C08B 31/00 (2006.01); C07K 14/405 (2006.01); C10L 1/02 (2006.01); C07K 1/14 (2006.01)
CPC C11B 1/10 (2013.01) [C07K 1/145 (2013.01); C07K 14/405 (2013.01); C08B 31/00 (2013.01); C10L 1/026 (2013.01); C10L 2200/0476 (2013.01)] 19 Claims
 
1. A method of pyrolytic thermal fractionation of microalgae biomass comprising a protein component and a triglyceride component with or without an additional carbohydrate component, the method comprising:
(a) heating the microalgae biomass to a first volatilization temperature of a first component comprising at least one of proteins or carbohydrates, and holding the first volatilization temperature of the heated microalgae biomass constant for a first period of time until no further mass loss of the first component occurs, thereby producing a first volatilized vapor product derived from proteins and/or carbohydrates, wherein the first volatilization temperature is in the range of from 180° C. to 360° C.;
(b) removing and recovering the first volatilized vapor product from the microalgae biomass remaining from step (a);
(c) heating the microalgae biomass remaining from step (b) to a second volatilization temperature of a second component comprising triglycerides, and holding the second volatilization temperature of the heated microalgae biomass constant for a second period of time until no further mass loss of the second component occurs, thereby producing a second volatilized vapor product derived from the triglycerides, wherein the second volatilization temperature is in the range of from 370° C. to 500° C.; and
(d) removing and recovering the second volatilized vapor product from the microalgae biomass remaining from step (c).