Kinetics reaction of the Flynn Wall Ozawa method on sawdust pyrolisis using a small scale pyrolysis apparatus

Sawdust waste biomass has a high heat potential to be used as a renewable energy resource. Pyrolysis is a technology for converting biomass into bio-char, bio-oil and bio-gas through the decomposition of biomass at high temperatures in the absence of oxygen. This study aims to find the optimum conditions for pyrolysis bio-oil production using small scale technology apparatus and determine the reaction kinetics parameters using the Flynn Wall Ozawa method. The small scale pyrolysis technology apparatus is designed using a furnace that can be adjusted to the fuel flow so that the pyrolysis heating rate can be controlled properly. Temperature variations carried out on sawdust pyrolysis with starting temperatures of 473 K, 498 K, 523 K, 548 K, 573 K, 598 K, 623 K, 648 K, 673 K, among others bio oil was obtained as much as 5.67%wt, 6.17%wt, 6.67%wt, 7.17%wt, 7.33%wt, 7.83%wt, 9.67%wt, 13.83%wt, 15.83%wt. The results of bio oil obtained at this temperature is brownish yellow, with an average mass is±48 g. T optimum for production bio oil is 673 K with kinetics parameter for bio oil are E=3587,85 kj/mol, A=3,73 minute−1 , bio gas E=3750,21 kj/mol, A=2,97 minute−1 ,and bio char E=6183,42 kj/mol, A=1,00 minute−1.