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Physicochemical Properties of Pyrolysis Bio-Oil from Sugarcane Straw and Sugarcane in Natura

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Author(s): Josilaine A. C. Durange | Margareth R. L. Santos | Marcelo M. Pereira | Luiz A. P. Fernandes Jr. | Marcio N. Souza | Anderson N. Mendes | Liena M. Mesa | Caio G. Sánchez | Elisabete M. S. Sanchez | Juan M. M. Pérez | Nakédia M. F. Carvalho

Journal: Journal of Biomaterials and Nanobiotechnology
ISSN 2158-7027

Volume: 04;
Issue: 02;
Start page: 10;
Date: 2013;
Original page

Keywords: Sugarcane | Pyrolysis | Bio-Oil Characterization

ABSTRACT
Under the renewable energy context, sugarcane biomass pyrolysis has been growing as a convenient route to produce bio-oil, which can be set into the chemical industry and refineries as building blocks or combustion fuel. In this work sugarcane straw was submitted to direct pyrolysis in a fluidized bed pilot plant at 500°C, in presence of air. Sugarcane in natura was also pyrolysed as a model for comparison, in order to determine the viability of processing different sources of raw biomass. The physicochemical characterization of the biomass precursors as well as of the bio-oils was also carried out, which points both biomass feedstocks as suitable for bio-oil production in terms of viscosity, surface tension, density and acidity. The bio-oil obtained from sugarcane in natura presented higher carbon and hydrogen content as well as lower oxygen content. On the other hand, the metal content is higher in the bio-oil obtained from sugarcane straw, in special the iron and potassium contents were 807 ppm and 123 ppm against 27 ppm and 1 ppm in the bio-oil from sugarcane in natura. Aliphatic and aromatic compounds as well as carbohydrates scaffolds were identified as the main components of the bio-oil. GC-MS analyses showed aromatic products from lignine fragmentation and free sugars and sugar derivatives.
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