抄録
Carbon dioxide is absorbed through photosynthesis during growth phase of biomass. Thus, the overall balance of carbon dioxide emissions in this practice can be considered even （i.e. carbon neutral）. Increased utilization of unused biomass and biomass waste is one way of solving the problems of reducing carbon footprint. However, since they have high water content, cost of drying is expensive. It is preventing the practical application.
Theoretically, to improve the drying rate, it is desirable to increase the surface area and reduce the thickness of material. We have developed a technology for efficient and functional drying using comminution technique.
