Microbiologists Richard Sparling and David Levin of the University of Manitoba have been using coffee cups as a source of biofuel. The cups are used to feed ethanol-producing bacteria with an efficient output of 1.3 litres of coffee cup biofuel, or ethanol, from about 100 Tim Hortons cups.
Traditionally, ethanol is extracted from food sources such as corn and wheat; however, this method is much more economical. Like most coffee drinkers, the bacteria show brand preference: Tim Hortons cups are preferred to Starbucks in the production of coffee cup biofuel.
Coffee Cup Biofuel
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University of Manitoba Microbiologists Turn Tim Hortons Cups Into Ethanol
- By: Chelsea MacMillanJul 23, 2010