OmaleA.; EkereN. R.; OmaleJ. A.; IhediohaJ. N.; EguS. A. 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 2024, 8, 59 - 72.