P-3-12 バイオマス炭化物を用いたエタノール濃縮

抄録

In recent years, bioethanol has attracted attention as a substitute fuel for fossil fuels. It is necessary to increase the purity of ethanol in the dehydration process during the bioethanol production process. Although various dehydration methods have been studied as methods for increasing ethanol purity, I focused on the adsorption separation by using biomass chars. It was found that in the case of using the char prepared at the carbonization temperature of 1000 °C, the water vapor was adsorbed on the char, but the ethanol vapor was not adsorbed. However, in the low relative pressure range, the amount of adsorbed water was very little and the separation efficiency of water-ethanol was poor. By using the char containing nitrogen, we succeeded in increasing the separation efficiency of water-ethanol even at low relative pressure range.