Adsorptive Effect of Corn Silk-Loaded Nickel Oxide and Copper Oxide Nanoparticles for Elimination of Ciprofloxacin from Wastewater - Chisom Theresa Umeh; John Kanayochukwu Nduka; Kovo Godfrey Akpomie; Joshua O. Ighalo; Refilwe Mogale (ACS Omega)