Correia, Tatiana Arruda, et al. “Zeolite As Alternative Materials for Removal of Zn+2 from Aqueous Solutions”. Revista De Ciências Agroveterinárias, vol. 9, no. 2, Oct. 2010, pp. 187-94, https://periodicos.udesc.br/index.php/agroveterinaria/article/view/5299.