Chromatographic characterization of bio-oils from fast pyrolysis of sugar cane residues (straw and bagasse) from four genotypes of the Saccharum Complex

摘要

AbstractResidues of four different genotypes of sugarcane (Saccharumsp.,Saccharum Robustum,Miscanthussp.and Erianthussp.), belonging to the Germplasm Bank of the Saccharum Complex (BAGCANA) from EMBRAPA, were subjected to a pyrolysis process and the bio-oils produced were analyzed by GC and GC×GC. The main objective was to start the studies in the integrated use of these residues (sugarcane straw and sugarcane bagasse) in view of a bio-refinery. The speciesRobustum,MiscanthusandErianthuswere compared with the cultivated variety of sugarcane (Saccharumsp.) because they are candidate to application as “energy-cane”, which is a sugarcane with higher amount of cellulose being cultivated for energetic purposes. The residues (straw and bagasse) are not adequately used and tend to be inadequately discarded, causing environmental impacts. However, if these residues be re-processed by pyrolysis, the produced bio-oil can be found many potential uses.The goal of this paper is to compare the amount and quality of bio-oils produced from these residues (bagasse and straw), intending to aggregate value to these materials and to indicate their best uses. The bio-oils were analyzed by GC×GC coupled to mass spectroscopy, allowing the detection and identification of their major constituents. Phenols were the main classes of identified compounds that can indicate the use of the bio-oil as alternative source of raw material for chemical industries. It is imp