<p>Disclosed is a method for using a graphene sponge to absorb organic solvents or oils. The method for use is suitable for the fields of sewage treatment or liquid-liquid separation. After the graphene sponge has absorbed organic solvents or oils, a depollution treatment is carried out. The depollution treatment removes or recycles the organic solvents or oils from the graphene sponge, using methods such as distillation at a low pressure, extraction or distillation at a high temperature.</p>
