Reducing Reliance on Fossil Fuel

30 May 2012

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Distillation is energy-intensive but produces co-products which can be used as a fuel source. Whisky-making results in two key co-products. Draff is a residue, resulting from malted and unmalted cereals soaking in warm water to remove the sugars as wort. Spent wash or 'pot ale' is the residue in the still after fermentation and distillation of the wort has taken place. Both have traditionally been reused as animal feed products known as 'dark grains' or as a fertiliser and soil improver.

The industry is investing in new ways to recover energy from co-products as an alternative fuel to produce heat and power. This will significantly reduce reliance on fossil fuels.