Bio-Oil Production by Thermal Cracking in the Presence of Hydrogen

Renato Cataluña1*, Zeban Shah2, Pedro Motifumi Kuamoto3, Elina B. Caramão4, Maria Elisabete Machado5, Rosangela da Silva6

Abstract This paper describes the bio-oil production process of a mixture of agricultural wastes: discarded soybean frying oil, coffee and sawdust, by pyrolysis and thermal cracking in the presence of hydrogen. The fractions obtained in the pyrolysis and/or cracking processes were divided into a light fraction and a heavy one. All the fractions were analyzed by comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry detection (GC×GC/TOFMS). The characteristics of the fractions obtained in the cracking process in the presence of hydrogen were similar to those of petroleum-based naphtha, while the fractions obtained by pyrolysis contained significant quantities of compounds such as furanmethanol, hexanol, and benzofuran, whose commercial value is high.

KeywordsBiomass pyrolysis, Chromatography, Hydrogen, Thermal cracking.

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