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Pyrolysis of Red Eucalyptus, Camelina Straw, and Wheat Straw in an Ablative Reactor

The purpose of this study is to produce and characterize biomass pyrolysis liquids obtained in an ablative bed reactor at laboratory scale. The feedstocks selected include eucalyptus (Eucalyptus tereticornis) chips, camelina (Camelina sativa) straw pellets, and wheat (Triticum aestivum) straw pellets. Pyrolysis experiments were carried out at 550 °C and atmospheric pressure with a nitrogen flow rate of 2.24 N L/min and an average solids feeding rate of 2.5 g/min, yielding 42.4, 48.8, and 41.0 wt % liquids for eucalyptus, camelina straw pellets, and wheat straw pellets, respectively. Such liquids, also known as bio-oils, were characterized using gas chromatography–mass spectrometry and complemented with water content, pH measurements, higher heating values, viscosity, and proximate, and ultimate analyses. The distribution of products and their properties were influenced by both the raw materials characteristics (chemical composition and structure) and the operating conditions used in the experimental setup...