US 12,252,404 B2
Nutrient recovery from hydrothermal liquefaction biochar
Shuguang Deng, Mesa, AZ (US); Peter Lammers, Tempe, AZ (US); Kodanda Phani Raj Dandamudi, Tempe, AZ (US); and Mark Seger, Gilbert, AZ (US)
Assigned to Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US)
Filed by Shuguang Deng, Mesa, AZ (US); Peter Lammers, Tempe, AZ (US); Kodanda Phani Raj Dandamudi, Tempe, AZ (US); and Mark Seger, Gilbert, AZ (US)
Filed on Jan. 27, 2023, as Appl. No. 18/160,677.
Claims priority of provisional application 63/305,495, filed on Feb. 1, 2022.
Prior Publication US 2023/0242405 A1, Aug. 3, 2023
Int. Cl. C01B 32/318 (2017.01); C01B 32/378 (2017.01)
CPC C01B 32/318 (2017.08) [C01B 32/378 (2017.08)] 17 Claims
OG exemplary drawing
 
1. A method of processing algae, the method comprising:
liquefying algae to yield a mixture comprising:
biocrude oil;
biochar; and
an aqueous component;
separating the biochar from the mixture; and
treating the biochar to yield a nutrient composition comprising ammoniacal nitrogen and phosphate,
wherein treating the biochar comprises forming an aqueous mixture comprising the biochar and an algal growth medium.