A by-product of biodiesel production is getting into a sticky situation… but in a good way. This story from Iowa State University says researchers at the school are turning glycerin into a commercially viable bioplastic adhesive.
“The basic feedstock is glycerin, a byproduct of the biodiesel industry,” said David Grewell, a professor of agricultural and biosystems engineering. “We’re turning waste into a co-product stream.”
Eric Cochran, an associate professor of chemical and biological engineering who also works on the project, said glycerin sells for around 17 cents a pound, much cheaper than the components of traditional acrylic adhesives.
“It’s almost free by comparison,” Cochran said. “And it comes from Iowa crops.”
The project recently received a grant of about $1 million from the U.S. Department of Agriculture to show that the technology can be competitive in the marketplace. The third and final year of the grant will see the researchers begin production at a pilot plant currently under construction at the ISU BioCentury Research Farm. The pilot plant will be able to produce up to a ton of adhesives per day, Grewell said.
The ISU research team is developing products for three primary markets: construction, pressure-sensitive adhesives and water-based rubber cement.