‘Eversa’ Enables Production from Waste Oils, Company Says
Denmark’s Novozymes is introducing a product called Eversa, which it says is the first commercially available enzymatic solution to make biodiesel from waste oils. “The enzymatic process converts used cooking oil or other lower grade oils into biodiesel,” the company says, allowing biodiesel producers to reduce their raw material costs.
“The resulting biodiesel is sold to the same trade specification as biodiesel created through traditional chemical processing,” the company says, describing “a solution that loves free fatty acids … Waste oils with high FFAs have not been a viable feedstock option until now.”
“The idea of enzymatic biodiesel is not new, but the costs involved have been too high for commercial viability,” Novozymes grain processing division marketing director Frederik Mejlby says in a release.
“Eversa changes this and enables biodiesel producers to finally work with waste oils and enjoy feedstock flexibility to avoid the pinch of volatile pricing,” Mejlby said. The initial focus is on used cooking oil, DDGS (distiller’s dried grains with solubles) corn oil, and fatty acid distillates.
“The enzymatic process uses less energy, and the cost of waste oil as a feedstock is significantly lower than refined oils,” Mejlby says.
“A small number of plants have been producing biodiesel from waste oils using existing technologies,” he says, “but this has not been cost-efficient until now, broadly speaking, as the waste oils have had to be refined before being processed using chemicals. We hope that our technology can unleash more of the potential in these lower grade feedstocks.”
Payback Estimated at Three Years
Novozymes says too that the enzymatic process eliminates the need for sodium methoxide, “one of the most hazardous chemicals in traditional biodiesel plants.”
Novozymes notes that making the change from a chemical catalyst to the enzymatic process requires retrofitting of production plants. Payback time is estimated at three years or less, depending on plant configuration and region.
Contact information is only available to premium subscribers. Click here to purchase a subscription.
Source: Novozymes with Fleets & Fuels follow-up