Maulana, M., Parlindungan, J., Rettob, A., Siregar, L., & Hitijahubessy, H. 2025 Oct 31. Characterization of Clay from Merauke Regency and Its Utilization as an Adsorbent of Free Fatty Acids in the Purification of Waste Cooking Oil. Fullerene Journal of Chemistry. [Online] 10:2