No.2-17 Degradative solvent extraction of biomass waste by petroleum based solvents at 350 °C

抄録

A woody biomass, Leucaena, and a grassy biomass, rice straw, were subjected to a degradative solvent extraction method that treats them in a non-hydrogen donor and fractionate the product to three fractions: Soluble, Deposit, and Residue at 350 °C. One of the challenges for the practical application of the method is to find cheap and locally available solvents instead of expensive 1-methylnapthalene (1-MN) which we have used as a model solvent. In this work, we proposed to use two petroleum based solvents: kerosene (abbrebiated to KS, b.p. = 170 °C) and a distillate of oil refinery that is rich in benzene derivatives (A150, b.p. = 180 °C). The validity of the solvents on the solvent treatment was examined by reference to 1-MN. The results showed that the thermal degradation behavior of the biomass in the three solvents was rather similar and was controlled by temperature. The Soluble yields from Leucaena were respectively 4.6, 16.1, and 20.7%, and the Soluble yields from rice straw were respectively 6.4, 18.5, and 29.3% for KS, A150, and 1-MN. Detailed characterization of the Soluble showed the possibility of potential utilization of the Soluble from the two petroleum based solvents as a high quality fuels or precursors of carbon materials.