CHEMTECH, Oct 1996 v26 n10 p48(6) 
                Pyrolysis of scrap tires: can it be profitable? Marek A. 
                Wojtowicz; Michael A. Serio. 
            Abstract: Pyrolysis offers an economically attractive option for 
            reprocessing scrap tires in light of the 280 million waste tires 
            generated annually in the US. To this end, a pyrolytic tire 
            reprocessing scheme for producing activated carbon, carbon black, 
            Boudouard carbon and fuel gas is proposed. According to a 
            feasibility study using current prices, the scheme would be 
            profitable under the assumption that pyrolysis yields are '35% char, 
            20% pyrolytic gas, 45% oils as well as 50% char burn-off.' 
             
             Article A18932180