	US 12,084,359 B1
	Synthesis of positively charged hydrogels for anionic pollutant removal
Saad Shaaban, Al-Ahsa (SA); Hany Mohamed Abd El-Lateef Ahmed, Al-Ahsa (SA); and Kamal Shalabi, Al-Kharj (SA)
Assigned to KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed by KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed on Jan. 3, 2024, as Appl. No. 18/403,431.
Int. Cl. C02F 1/28 (2023.01); C08L 97/02 (2006.01); C02F 101/20 (2006.01); C02F 101/30 (2006.01)

CPC C02F 1/286 (2013.01) [C08L 97/02 (2013.01); C02F 2101/20 (2013.01); C02F 2101/30 (2013.01)]

6 Claims

1. A method for making a lignocellulose based hydrogel from date palm waste, the method comprising:

obtaining date palm waste;

isolating lignocellulose from the date palm waste to obtain isolated lignocellulose;

treating the isolated lignocellulose with methacrylic anhydride in the presence of trimethylamine to obtain a lignocellulose incorporating methacrylate;

purifying the lignocellulose incorporating methacrylate;

copolymerizing the purified lignocellulose incorporating methacrylate with aziridine and 4,4′-diselanediyldianiline; and

obtaining the lignocellulose based hydrogel.