Typical ash content for selected biomass on a dry basis. Source: AURI, 2005; Preto, 2010.

% Ash:

• 0% - 1% = Premium wood pellets
• 1% - 2% = Corn
• 3% - 5% = Corn stover, Perennial grass with in-field leaching, Overwintered switchgrass
• 8% = Straw (range of 5% - 11%)
• 9% = Alfalfa