New product from silage may generate $800M for US ethanol industry

In Iowa, a professor at Iowa State University has determined how to grow a high-protein animal feed from thin silage, a soup of leftovers and waste once the protein-based solids are centrifuged out. Silage is produced in a 5:1 ratio during the ethanol production process, making this technology a use of a waste by-product of a byproduct.

The process could save ethanol producers in the US up to $800 million annually.