Mohammed, M. A., B. S. U. Ibn Abubakar, and B. B. Kurna. “Equilibrium and Kinetic Studies of Adsorption of Safranin-O from Aqueous Solutions Using Pineapple Peels”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 13, no. 6, Dec. 2017, pp. 671-87, https://www.azojete.com.ng/index.php/azojete/article/view/429.