KHATAMIAN, M., & DOLATYARI, M. (2010). Synthesis and Characterization of HS, X and HS + X Type Zeolites from Kaolin and the Study of Their Ion Exchange Capacity for Cu2+, Ni2+ and Co2+. Asian Journal of Chemistry, 19(7), 5199–5210. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/13125