抄録
Use of the biomass is one of the solutions of an energy problem. The sugar provided by saccharification of the biomass can be converted into biofuel and materials. There are some problems in saccharification methods, for example, sulfuric acid saccharification needs collection and disposal of abolished sulfuric acid, hydrothermal saccharification needs high temperature and high pressure conditions, and enzymic saccharification needs long reaction time and high costs. Ultrasonic irradiation causes a physical effect as stirring and a chemical effect as radical reaction by selecting the frequency appropriately. The aim of this research is to investigate the influence of ultrasonic irradiation on solid acid saccharification of biomass under the mild condition. From our experimental results, it was suggested that solid acid method with ultrasonic irradiation accelerated the saccharification reaction at the temperature of 60 ℃. And also, the case of 50 kHz irradiation showed higher total sugar concentration than that of the 200 kHz irradiation.
