UPTAKE OF Co(II), Pb(II) AND Ni(II) IONS BY Annona senegalensis STEM BARK BIOCHAR FROM AQUEOUS SOLUTION: OPTIMIZATION, KINETIC AND THERMODYNAMIC STUDIES. FJS [Internet]. 2024 Apr. 30 [cited 2025 Sep. 17];8(2):59-72. Available from: http://162.254.38.185/index.php/fjs/article/view/2341