Amer, Mahdi Muhammad, et al. “Adsorption Study of Congo Red Dye on Activated Charcoal”. Scientific Journal of Faculty of Education, Misurata University , vol. 7, no. 02, Sept. 2020, pp. 135-48, https://journals.misuratau.edu.ly/edu/ojs/index.php/eduction/article/view/228.