ClearFuels Technology has signed a cooperative agreement with the US Department of Energy (DOE) to receive the remaining $19.7m of a $23m grant award to complete construction of a ClearFuels demonstration scale gasifier.

Gasifier will supply syngas from biomass and integrate it with Rentech’s Product Demonstration Unit at the Rentech Energy Technology Center in Colorado.

The DOE has completed planning, technical and budget reviews of the project and subsequently approved the remainder of activities required for the integration and operation of the biomass to renewable diesel and jet fuels demonstration.

The grant will facilitate the integration of ClearFuels’ flexible biomass to synthesis gas technology with Rentech’s Fisher-Tropsch Process, with the goal of demonstrating efficient production of certified, drop-in, renewable diesel and jet fuels from clean biomass at Rentech’s Product Demonstration Unit in Commerce City, Colorado.

This joint demonstration of an integrated bio-refinery is anticipated to be completed in late 2011.