Addisu T. Derebe, Kean Wang, and Subrata Mondal. “Carbon Spheres for the Removal of Hevay Metal Ions From Refinery Effluents”. Journal of Chemical Engineering Research Updates 1, no. 1 (November 23, 2014): 35–45. Accessed June 26, 2025. https://avantipublisher.com/index.php/jceru/article/view/122.