US 12,285,736 B1
Degradation of hexachlorocyclohexane from soil with steam activated biochar
Muhammad Aamir, Al-Ahsa (SA); Muhammad Hassan, Al-Ahsa (SA); and Faisal Haroon, Al-Ahsa (SA)
Assigned to KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed by KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed on Feb. 16, 2024, as Appl. No. 18/444,580.
Int. Cl. C01B 13/11 (2006.01); B01J 20/20 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B09C 1/08 (2006.01); C01B 32/318 (2017.01); C01B 32/336 (2017.01)
CPC B01J 20/20 (2013.01) [B01J 20/28059 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); B09C 1/08 (2013.01); C01B 32/318 (2017.08); C01B 32/336 (2017.08); C01P 2006/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of removing hexachlorocyclohexane (HCH) from soil using a steam activated biochar, the method comprising
pyrolyzing corn stover to obtain the biochar;
drying the biochar at a drying temperature;
steam activating the biochar in an autoclave at a temperature higher than the drying temperature;
adding 6% by weight of the steam activated biochar to soil contaminated with the HCH; and
removing the HCH from the soil;
wherein the biochar acts as an oxidizing agent in the soil.