Edmund, Okorie. “Removal of Cadmium II, Chromium II and Copper II from Aqueous Solution by Adsorption on Palm Kernel Shell Carbon”. International Journal Of Research And Technopreneurial Innovations 2, no. 1 (April 1, 2025): 44–51. Accessed September 3, 2026. https://www.ijrti.com.ng/index.php/home/article/view/56.