Removal of Residual Oil from Palm Oil Mill Effluent Using Solvent Extraction Method. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 38, n. 1, p. 33–42, 2012. DOI: 10.11113/jt.v38.507. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/507.. Acesso em: 9 mar. 2025.