Fig. 7: Economic factors with the PVDF and r-GONR oil sorbents with and without Joule-heating and photothermal effects.

a CapEx and OpEx, (b) cost of the sorbents fabricated, (c) revenues using motor oil 5W-40, motor oil 10W-40, and diesel oil recovery, and (d) profits using motor oil 5W-40, motor oil 10W-40, and diesel oil recovery.