Recyclability and Carbonization Regeneration of Oil Adsorbing Materials Based on Commercial Expandable Graphite

This study focused on the oil absorption and carbonization regeneration properties of expanded graphite (EG) prepared from commercial expandable graphite as an oil absorbing material for different oils. The specific surface area of the prepared EG sample was 37.15 m 2 /g, and the oil absorption was as high as 76 g/g. More importantly, the prepared expanded graphite had excellent recyclability and good carbonization regeneration performance. Even after 5 cycles, the adsorption capacity remained above 80%. The regenerated EG sample regained a high oil absorption capacity of 44.64g/g. This article has important guiding significance for promoting the large-scale practical application of expanded graphite oil absorbing materials.