an integrated scrap tire pyrolysis plant can be built to process scrap tires . the recovered carbon black can be used in rubber and plastic industries . oil and gas from the pyrolysis process can further be used in the production of virgin carbon black . natural rubber is a sustainable feedstock for the manufacture of tires , making the manufacture of virgin carbon black partially sustainable . a very low pah carbon black can be produced by limiting the exit temperature of carbon black and tail gas prior to leaving the reaction chamber .