S. SHIHAB, M.; I. AL-HYALY, A.; M. ALOBAIDI, R. Investigate the Effects of F/M, MLSS, and Metal/MLSS Ratio on the Removal of Cd and Pb in the Activated Sludge Units,. Al-Rafidain Engineering Journal (AREJ), [S. l.], v. 17, n. 6, p. 54–64, 2009. DOI: 10.33899/rengj.2009.43635. Disponível em: https://ojs.uomosul.edu.iq/index.php/arej/article/view/27012. Acesso em: 7 aug. 2025.