STUDY OF THE ADSORPTION OF Cr, Ni, AND Pb FROM TANNERY WASTEWATER USING MODIFIED RICE HUSK AND CASSAVA PEEL POWDER. FJS [Internet]. 2025 Mar. 31 [cited 2025 Sep. 2];9(3):268-83. Available from: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/2866