OPTIMIZATION OF BIODIESEL PRODUCTION FROM USED OIL OF FISH PROCESOR USING SODIUM METHOXIDE AND SULPHONATED EGG-SHELLS AS CATALYST. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 7, n. 4, p. 284–292, 2023. DOI: 10.33003/fjs-2023-0704-1929. Disponível em: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/1929. Acesso em: 11 sep. 2025.