Sustainable and Eco-friendly Method for Oil Recovery from Refinery Sludge Using Froth Flotation and Biosurfactants. - Alabresm, Amjed; Madan, Zaki A.; Saleh, Salah M.; Al-Imara, Eman A.; Al-Buzayd, Hasan Y.; Aziz, Najim M.; Al-Shatty, Sabah M.; Al-Salhi, Ahmed A.; Albaaj, Ammar K.; Lead, Jamie R. (EnvironmentAsia, 2026)