US 11,866,349 B1
Method of chromium (CR+6) removal from wastewater using copper augmented biochar
Muhammad Aamir, Al-Ahsa (SA); and Muhammad Hassan, Al-Ahsa (SA)
Assigned to KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed by King Faisal University, Al-Ahsa (SA)
Filed on Sep. 5, 2023, as Appl. No. 18/242,418.
Int. Cl. C02F 1/28 (2023.01); B01J 20/02 (2006.01); B01J 20/20 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01); C02F 1/62 (2023.01); A61K 36/899 (2006.01); C02F 101/22 (2006.01); B01J 20/28 (2006.01); C02F 1/68 (2023.01)
CPC C02F 1/283 (2013.01) [B01J 20/0237 (2013.01); B01J 20/20 (2013.01); B01J 20/3028 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); B01J 20/3214 (2013.01); B01J 20/3236 (2013.01); C02F 1/62 (2013.01); A61K 36/899 (2013.01); B01J 20/28009 (2013.01); C02F 1/683 (2013.01); C02F 2101/22 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of preparing copper augmented biochar comprising:
pyrolyzing wheat straw to provide a biochar; and
adding copper to the biochar to provide a copper augmented biochar, wherein adding the copper to the biochar comprises mixing CuSO4 and water with the biochar while heating to form a heated solution; obtaining a wet biochar from the heated solution; and heating the wet biochar for a period of time ranging from about 1 hour to about 3 hours at a temperature ranging from about 550° C. to about 650° C. to provide the copper augmented biochar.