In this study, the expanded graphite (EG) and magnetic NiFe2O4 based composite prepared from available graphite source of Vietnam has been found as a potential adsorbent to remove crude oil (CO) and diesel oil (DO). The EG/NiFe2O4 was fabricated via a facile two-step process: (1) the expansion of graphite and (2) the decoration of magnetic NiFe2O4 on EG. | Magnetic adsorbents based on the composite of expanded graphite and NiFe2O4 for removal of heavy oils