Brewing - emissions and waste

Brewers grains

Animal feed

• separation (centrifuge or sieve?)
• evaporation of centrate
• drying of solid fraction
• is it economic?
  • alternative is transport wet

Consider option of combining with (concentrated) pot ale or spent wash

• "dark grains" as animal feed

Other options

• fertiliser
• raw material for other food processes

Article: Spent grain use

In this article Dr Charles Bamforth provides a summary of some of the ways in which brewery co-products have been used rather than wasted. The ultimate question Dr Bamforth is asking is whether the the co-products of the brewing industry may one day be more valuable than the beer itself. An estimation of brewers' grains contribution is made at somewhere between 20 and 30 million tonnes a year.

The World of Brewery Co-Products. Published Online.