Preparation of gamma-alumina as a catalyst And study its properties and use in Adsorption of chromium hexagon from water Sewage. cbej [Internet]. 2022 Dec. 26 [cited 2024 Jul. 3];20(85):38-51. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8613