Saifullahi Shehu Imam, and ZakariyyaUba Zango. “Magnetic Nanoparticle (Fe3O4) Impregnated onto Coconut Shell Activated Carbon for the Removal of Ni(II) from Aqueous Solution”. International Journal of Research in Chemistry and Environment (IJRCE) 8, no. 2 (March 31, 2018): 9–15. Accessed December 4, 2024. https://ijrce.org/index.php/ijrce/article/view/237.