Adsorption on a fixed - bed column of Mn(II) from aqueous solutions by nano bentonite prepared from ultrasonic – assited activation. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 8, n. 2, p. 23–28, 2019. Disponível em: https://jca.edu.vn/index.php/jca/article/view/571.. Acesso em: 4 jul. 2025.