UConn researchers demonstrate hemp as viable biodiesel feedstock

In Connecticut, researchers at UConn have found that the fiber crop Cannabis sativa, known as industrial hemp, has properties that make it viable and even attractive as a raw material, or feedstock, for producing biodiesel. The plant’s ability to grow in infertile soils also reduces the need to grow it on primary croplands, which can then be reserved for growing food, says Richard Parnas, a professor of chemical, materials, and biomolecular engineering who led the study.

With his graduate student Si-Yu Li and colleagues James Stuart of the Department of Chemistry and Yi Li of the Department of Plant Sciences, Parnas used virgin hemp seed oil to create biodiesel using a standardized process called transesterification. The group then tested the fuel for a suite of characteristics in the Biofuels Testing Laboratory at UConn’s Center for Environmental Science and Engineering.

The hemp biodiesel showed a high efficiency of conversion – 97 percent of the hemp oil was converted to biodiesel – and it passed all the laboratory’s tests, even showing properties that suggest it could be used at lower temperatures than any biodiesel currently on the market.