Project LIBERTY in Emmetsburg, Iowa, has produced and shipped several tank cars of cellulosic ethanol even as the plant is ramping up to its full 20 million gallon-per-year capacity. Last year’s startup phase yielded great experience that will benefit subsequent plants and the learning continues each day as POET-DSM Advanced Biofuels works to make cellulosic ethanol in the most efficient way possible.
According to POET, the start-up phase that lasted more than a year, has yielded good experience that will benefit future plants. This learning, the company says, continues daily as the POET-DSM Advanced Biofuels team work to make cellulosic ethanol even more efficient.
POET-DSM’s process uses corn cobs, leaves, husk and some stalk as the feedstock for cellulosic ethanol. The feedstock is harvested by local farmers and transported to the plant for processing. Besides ethanol, Project LIBERTY produces biogas from its anaerobic digester and steam from its solid-fuel boiler to produce power to run its own processes and export energy to the adjacent grain-based ethanol plant.