Agustina, T.E. et al. 2017. Treatment of Wastewater Containing Hexavalent Chromium Using Zeolite Ceramic Adsorbent in Adsorption Column. International Journal on Advanced Science, Engineering and Information Technology. 7, 2 (Apr. 2017), 566–572. DOI:https://doi.org/10.18517/ijaseit.7.2.2035.