The biomass dries out so entirely that it loses the ability to take in moisture, or rot. It loses about 20 p.c of its primary mass, but retains 90 per cent of its energy. The missing energy and mass can be used to fuel the torrefaction process. (of the subject https://josuexbbcc.blazingblog.com/38250823/5-simple-techniques-for-pure-biodiesel