HENDRIYANA. Recovery of Waste Engine Oil Using Vacuum Distillation: Effect of Solvent Pre-Treatment . CHEMICA: Jurnal Teknik Kimia, [S. l.], v. 12, n. 3, p. 141–150, 2025. DOI: 10.26555/chemica.v12i3.440. Disponível em: https://journal3.uad.ac.id/index.php/chemica/article/view/440. Acesso em: 15 nov. 2025.