A new technology allows crude glycerin, a waste byproduct of the biodiesel industry, to be turned into commercially viable polyurethane foam, say researchers from Ohio State University and Ohio startup Poly-Green Technologies. Because the feedstock used in the process is a waste product with little commercial value, the foam -- suitable for use in vehicle parts and construction work -- is reportedly about 5% to 10% less expensive to produce than equivalent foam made from petroleum or other natural oils.

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