Azis, Yelmida, Ida Zahrina, Ahmad Fadli, and Muhammad Asyaf Hazzamy. “Utilization of Bengkalis Beach Sand Silica As Raw Material in the Synthesis of Zeolite 4A”. Science and Technology Indonesia 9, no. 2 (April 2, 2024): 244–250. Accessed May 2, 2026. https://www.sciencetechindonesia.com/index.php/jsti/article/view/994.