Celtic Renewables has found a way to turn a byproduct from the creation of whiskey into something even more flammable: fuel. This will greatly lower the wast from whiskey distillation while contributing to the growing field of bio-energy. Neat!
This isn’t the first time someone has thought to turn whiskey waste into energy. A handful of other distilleries, including the American bourbon producer Maker’s Mark, use anaerobic digesters to convert waste into biogas, which is then used to fuel the distilling processâ€”a neat little closed-loop system. But Celtic Renewables’ process creates three useful substances instead of just one.
When I spoke to the company’s founder and chief scientific officer, an Irish industrial microbiologist named Martin Tangney, he excitedly ennumerated the virtues of the byproducts his process produces: As a fuel, biobutanol is 25 percent more efficient than ethanol. Acetone has all kinds of industrial usesâ€”plus, it’s a nail-polish remover. The animal feed is rich in protein.