WOOTTHIKANOKKHAN, S.; MUTCHIKA , S.; PHONTEE, A. REMOVAL OF FREE FATTY ACID IN CRUDE JATROPHA CURCAS OIL USING FERRIC SULPHATE FOR BIODIESEL PRODUCTION. Suranaree Journal of Science and Technology, [S. l.], v. 18, n. 3, p. 229–237, 2026. Disponível em: https://ph04.tci-thaijo.org/index.php/SUJST/article/view/13759. Acesso em: 16 sep. 2026.