Torrefaction Continues at SERC

Wood chips before and after torrefaction.

Unprocessed wood chips (front) and the same feedstock after torrefaction. Photo credit Kellie Brown, HSU Photographer.

SERC is continuing its work with Renewable Fuel Technologies (RFT) on torrefaction. Torrefaction is the process of heating biomass to 250 – 300 degrees Celcius in the absence of oxygen.

The resulting product, referred to by RFT as “BioCoal,” has a higher energy density and is easier to pelletize than raw biomass. It is also hydrophobic, meaning it does not absorb water. These properties make BioCoal easier and less costly to store and transport compared to raw biomass. BioCoal can be used as a feedstock for liquid biofuels or co-fired in a coal power plant, thus replacing fossil fuels with a renewable energy source.

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