Optimization of Lemongrass Oil-Based Biodiesel Production Using Heterogeneous Catalysts: A Sustainable Approach. International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 4, n. 07, p. 5005–5011, 2026. DOI: 10.47392/10.47392/IRJAEH.2026.0658. Disponível em: https://irjaeh.com/index.php/journal/article/view/1974.. Acesso em: 26 jul. 2026.