ENHANCING RARE EARTH ELEMENTS STABILITY IN ION ADSORPTION CLAYS DURING ION-EXCHANGE LEACHING WITH SALT SOLUTIONS: A THERMODYNAMIC APPROACH THROUGH POURBAIX DIAGRAMS. J. Teknol. [Internet]. 2025 Dec. 23 [cited 2026 Sep. 13];88(1):41-5. Available from: https://journals.utm.my/jurnalteknologi/article/view/23169