| abstract |
This fuel production method uses, as a starting material, a wooden biomass including a sugar solution as sap, and is provided with: a squeezing step in which the sugar solution is squeezed from the wooden biomass; a methane fermentation step in which methane fermentation processing is performed using, as a fermentation starting material, the sugar solution obtained in the squeezing step; and a strained lees fuel conversion step in which a biogas obtained in the methane fermentation step is used to convert, into a solid fuel, strained lees obtained in the squeezing step. |