EFFECT OF VARIOUS CATALYSTS ON FUEL OIL PYROLYSIS PROCESS OF MIXED PLASTIC WASTES

In this study, mixed plastic wastes were converted into liquid fuels. Mixed plastic wastes used were high density polyethylene (HDPE), low density polyethylene (LDPE), polystyrene (PS), polypropylene (PP) and polyethylene-terephthalate (PET). The pyrolysis processes were carried out with fixed bed reactor. Natural catalyst such as Shwedaung clay, Mabisan clay, Bentonite clay, Dolomite and synthetic catalyst, zinc oxide, were used as catalyst for pyrolysis of mixed plastic wastes. These natural catalysts were naturally found in Myanmar and zinc oxide was collected from local market. In this study, sample was used 200g (HDPE, PP, LDPE, PS, PET = 40, 30, 22.5, 5, 2.5 wt %) and 20g of catalysts was used to accelerate the reaction. The experiments were carried out at temperature between 32 to 380 degrees Celsius by using various catalysts. From this study, yields of liquid fuel were found to be 63.76-67.06% and yields of gas were 19.92-28.52%.