Upgrading of pyrolytic oil produced from MPW has also been investigated using FCC catalyst as a cracking
catalyst [14]. The addition of FCC catalyst in degradation process showed the improvement of liquid and gas yields
and also high fraction of heavy hydrocarbons in oil product due to more cracking residue. Non-catalytic pyrolysis
process has also been studied using waste PE, PP and PS [15]. The results showed that waste PS produced higher
liquid while waste PE and PP produced higher gaseous products.