Nguyễn Lê, M.L. and Nguyễn, N.T.V. 2025. Adsorption of Co(II) from aqueous solutions onto Na-bentonite. Hue University Journal of Science: Natural Science. 134, 1A (Mar. 2025). DOI:https://doi.org/10.26459/hueunijns.v134i1A.7608.