Bio-oil production from pyrolysis of coffee and eucalyptus sawdust in the presence of 5% hydrogen

In this paper, we have done some important analysis of bio-oil obtained from the pyrolysis of coffee and eucalyptus sawdust in the presence of 5% Hydrogen. The bio-oil was obtained in one step pyrolysis in which temperature of the system was kept 25ºC and then increased up to 850ºC. After pyrolysis the obtained dark sticky liquid (highly viscous bio-oil) was introduced to thermal cracking. During thermal cracking the bio-oil was condensed at two different temperatures 100ºC and 5ºC so we got two types of bio-oil, BHTT (bio-oil obtained at high temperature 100 ºC after thermal cracking) and BLTT (bio-oil obtained at low temperature 5ºC after thermal cracking). Then both types of bio-oil were distillated and analyzed in Gas chromatography and Mass spectrometry (GC-MS) technique and comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry detection (GC×GC/TOFMS). Agriculture residue bio-oil and its thermal cracking fractions could be effectively characterized by GC/MS and GC×GC/TOFMS, where the light fraction was composed of a wide range of lower polarity compounds while heavy fraction had higher polarity compounds