ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,570, issued on Dec. 30, was assigned to Imam Abdulrahman Bin Faisal University (Dammam, Saudi Arabia).

"Biochar-supported layered double hydroxide-cellulose nanocrystals composite for dye removal" was invented by Mukarram Zubair (Dammam, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of adsorbing a dye from an aqueous solution including contacting a composition with the aqueous solution. At least a portion of the dye adsorbs to the composition. The composition includes biochar, cellulose nanocrystals, and a layered double hydroxide (LDH). The LDH includes Cu and Fe. Particles of the LDH and the biochar at least partially cover ...