GUPTA, A.K.; CHANDRA, A.K.; SHARMA, U.C. Various Pre-Treatment Methods to Reduce Free Fatty Acid Content in Non-Edible Vegetable Oils for Biodiesel Production. Asian Journal of Chemistry, [S. l.], v. 34, n. 11, p. 3021–3025, 2022. DOI: 10.14233/ajchem.2022.23954. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/34_11_38. Acesso em: 22 jul. 2024.