Ethanol Production Processes :   ›DRY MILLING        ›WET MILLING        ›CELLULOSIC BIOMASS

CELLULOSIC BIOMASS

This process flow diagram shows the basic steps in production of ethanol from cellulosic biomass. Note that there are a variety of options for pretreatment and other steps in the process and that several technologies combine two or all three of the hydrolysis and fermentation steps within the shaded box. Chart courtesy of the National Renewable Energy Lab.*

*Information & chart cited from www.ethanolrfa.org/pages/how-ethanol-is-made