The biomass dries out so entirely that it loses the ability to take up dampness, or rot. It loses about 20 percent of its unique mass, but retains 90 p.c of its energy. The lost energy and mass can be used to fuel the torrefaction process. Emissions for example NOx, https://pure-biodiesel00875.dbblog.net/11472036/the-2-minute-rule-for-biofuels-are-they-the-fuels-of-the-future