Study on adsorption of Cu(II) in aqueous solution using zeolite 3A prepared from rice husk ash. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 8, n. 1, p. 122–128, 2019. Disponível em: https://jca.edu.vn/index.php/jca/article/view/607.. Acesso em: 5 oct. 2025.