Making Biofuels from Cheese
From: Oshkosh Northwestern
Prepare for a variety of fuels from many sources, says Wisconsin entrepreneur Joe Van Groll whose start-up renewable energy company produces both ethanol and bio-diesel without a single corn kernel or soybean in sight.
The Grand Meadow Energy LLC near Stratford trucks in waste from surrounding cheese plants and raw canola oil from a nearby farm....
Van Groll is a 13-year veteran of the state's cheese industry, and his process focuses on permeate, a by-product of cheese making. But Van Groll says the technology can be used on a variety of waste streams and he sees no end in sight to its application.
His technology now turns what he refers to as "a messy problem" into a profit center for cheese plants. He buys permeate, blends it with a customized yeast culture, and produces pure alcohol ethanol. He does so at about a quarter of the cost of producing corn-based ethanol.
Two months ago, he began blending the ethanol with raw canola oil to make biodiesel. He uses the biodiesel to power a generator that produces electricity for his plant and plans to sell excess energy back to the power company.