Tecnologia em Metalurgia, Materiais e Mineração
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original

Hidrothermal liquefaction of lignocellulosic residue to produce sustainable materials: fractions characterization

Solange Kazue Utimura, Denise Crocce Romano Espinosa, Marco Antonio das Neves, Isao Kobayashi, Mitsutoshi Nakajima, Cristina Stewart Bogsan

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In this study, hydrothermal liquefaction (HTL) of sugarcane bagasse (SCB) acquired in Okinawa (Japan) was performed at 170, 200 and 230 °C, pressures from 1 to 3 MPa and retention time of 30 min. These experiments were executed in a 500 mL reactor with 5 g SCB and 95 mL deionized water in inert nitrogen condition. The highest sugar yields were obtained at the concentration of 20.25 g/L at 230 °C, 3 MPa and 30 min. In accordance with elemental analysis, highest carbon content values were 55.31% at 200 °C and 59.9% at 230 °C. The chemical composition was analyzed through SEM and FTIR. HTL has been applied to obtain biomaterials from agricultural wastes which can be incorporated or converted into new value-added products. HTL in subcritical conditions is an interesting hydrolysis process and has advantages of reduced energy consumption and water reaction environment.


Hydrothermal liquefaction; Sugarcane bagasse; Subcritical conditions; Lignocellulosic residues; Materials; Waste


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