enhancement of bio oil yield and aromatic compounds selectivity via co-pyrolysis of paulownia wood and polypropylene waste blend on a horizontal reactor

Thermochemical conversion of biomass and petrochemical wastes blend is an excellent method to produce valuable fuels and reduce environmental pollution. bio-oil production via blending of paulownia wood and polypropylene plastic was investigated in a fixed bed horizontal reactor at different reaction temperatures and different polymer/ biomass weight ratios. biomass showed the highest amount of bio-oil production (52.8 wt.%) at 500°c. the results show that with increase in temperature, the production of lighter products (with lower carbon number) has increased. co-pyrolysis on a horizontal reactor showed positive synergy for the production of liquid and gaseous products. bio-oil production increased to 61.03 wt.% and the relative oxygen content of the liquid products decreased. in co-pyrolysis with the ratio of 60:40 of paw: pp, aromatic compounds with 35% by weight constitute the highest amount of liquid product and production of furans and aldehyde/ketones reduced. while this number is equal to 8% for blend of 5% pp and 95% paw.