Repurposing pig manure for asphalt | Knowledge Hub | Circle Economy Foundation
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Business case
Repurposing pig manure for asphalt
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Researchers from North Carolina A&T State University have developed a process that uses pig manure as a low-cost replacement for petroleum in the production of road asphalt. In searching for bio alternatives, the group discovered that swine waste is especially rich in oils very similar to petroleum, at a grade too low to make gasoline but suited for asphalt. With funding from the National Science Foundation, the group developed a process that turns the waste into a black crude - the sticky binder that can be used to make asphalt. * Financial impact: cost to process the manure oil is US$0.56 a gallon, which is much cheaper and greener than current petroleum binders. Read more at:
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