Effectiveness Of Activated Nipah Bark Charcoal In Reducing Free Fatty Acids And Peroxide Numbers In Waste-Cooked Oil. Sinta. J. Sci. Tech. and Agric. [Internet]. 2026 Jun. 30 [cited 2026 Oct. 12];7(1):189–200. Available from: https://www.journal.pdmbengkulu.org/index.php/sinta/article/view/1898