In this study, we focused on aerobic fermentation of waste mushroom medium as a supply method of heat and CO2 to promote crop growth in horticultural facilities. The laboratory-scale experiment of aerobic fermentation of Hypsizygus waste mushroom medium was carried out using an aerated reactor of 2 L maintained at 40 °C for 31 days. Also, the fiber components in the waste mushroom media before and after fermentation were quantified. The results showed that the maximum oxygen consumption rate was about 1.5 g/h･kg-DM, which was 2.5 times higher than that of Larch. The waste mushroom medium decomposed by about 30% during aerobic fermentation and the contents of holocellulose and lignin was decreased by 24 % and 31 %, respectively.
