Arnesya Ramadhani, Sonya Hakim Raharjo, Retno Dwi Nyamiati. Utilization of Fly Ash and Zeolite to Reduce Chemical Oxygen Demand (COD) in Domestic Waste at the Al Ihya Ulumaddin Islamic Boarding School Cilacap. FJAS [Internet]. 2023 Mar. 10 [cited 2026 May 1];2(3):303-12. Available from: https://journal.formosapublisher.org/index.php/fjas/article/view/3347