Raven Biofuels commenced construction of 11 Mgy cellulsoic ethanol plant, unveils furfural, ethanol process

In California, Raven Biofuels gave an overview of the company’s process and prospects. The company has a proprietary cellulosic ethanol process, based on two-stage dilute acid hydrolysis.

In stage 1, cellulosic feedstock, such as wood chips or sugar cane bagasse, is mixed with weak sulfuric acid solution and heated to separate xylose (C5 sugars) from hemicellulose which are then refined into furfural. In stage 2, the remaining portion of the feedstock is treated again with sulfuric acid to produce glucose (C6 sugars) from cellulose which is then fermented into ethanol. Leftover lignin is converted into steam, to reduce the cost of ethanol production.

The company said it commenced construction of an 11 Mgy cellulosic ethanol plant in Kamloops, British Columbia last month.

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