US 11,939,528 B2
Method for preparing biochar and hydrogen by utilizing anaerobic fermentation byproducts
Guanyi Chen, Tianjin (CN); Xiang Guo, Tianjin (CN); Yurou Mao, Tianjin (CN); Beibei Yan, Tianjin (CN); Yanbin Zhang, Tianjin (CN); Junyu Tao, Tianjin (CN); Wanqing Li, Tianjin (CN); Zhanjun Cheng, Tianjin (CN); and Wenchao Ma, Tianjin (CN)
Assigned to TIANJIN UNIVERSITY, Tianjin (CN)
Appl. No. 17/298,137
Filed by TIANJIN UNIVERSITY, Tianjin (CN)
PCT Filed Oct. 16, 2019, PCT No. PCT/CN2019/111508
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2021/072684, PCT Pub. Date Apr. 22, 2021.
Prior Publication US 2022/0017825 A1, Jan. 20, 2022
Int. Cl. C10B 57/10 (2006.01); B01J 23/10 (2006.01); B01J 23/755 (2006.01); B01J 37/08 (2006.01); C01B 3/40 (2006.01); C10B 47/02 (2006.01); C10B 57/16 (2006.01); C12P 3/00 (2006.01)
CPC C10B 57/10 (2013.01) [B01J 23/10 (2013.01); B01J 23/755 (2013.01); B01J 37/08 (2013.01); C01B 3/40 (2013.01); C10B 47/02 (2013.01); C10B 57/16 (2013.01); C12P 3/00 (2013.01); C01B 2203/1628 (2013.01); C12P 2203/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for preparing biochar and hydrogen by utilizing anaerobic fermentation byproducts, the method comprising:
mixing first straw, seeding sludge, and distilled water for anaerobic fermentation to obtain a fermented mixed product;
separating fermented straw from the fermented mixed product to obtain second straw;
separating and recovering a biogas slurry from the fermented mixed product;
carbonizing the obtained second straw to obtain the biochar; and
collecting gas after a pressurized catalytic reaction of the obtained biogas slurry.