Optimization of Domestic Wastewater Treatment Using a Mixture of Coconut Shell Activated Carbon Adsorbent and Fly Ash. Sainmatika [Internet]. 2024 Dec. 9 [cited 2026 Jun. 21];21(2):122-33. Available from: https://jurnal.univpgri-palembang.ac.id/index.php/sainmatika/article/view/16246