Joseph Ifeanyi Uche and Blessing Chika Ehiwario, “Adsorption of Cadmium and Nickel from Aqueous Solution Using Chitosan and Chemically Modified Chitosan”, IJSBAR, vol. 65, no. 1, pp. 224–237, Dec. 2022, Accessed: Sep. 14, 2025. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/14701