DAWOOD, M. A. Recovery and Purification of Used Lubricating Oil Through Solvent Extraction: Empirical Validation and Process Optimization. Academia Open, [S. l.], v. 11, n. 1, 2026. DOI: 10.21070/acopen.11.2026.14011. Disponível em: https://acopen.umsida.ac.id/index.php/acopen/article/view/14011. Acesso em: 3 apr. 2026.