This process could one day make it possible to develop agricultural feedstocks for ethanol production.

The process is the work of Dr. Thomas E. Amidon, chair of the college's Faculty of Paper Science and Engineering. Amidon's process is a way of removing energy-rich sugars from wood. Once fermented, the sugar xylan can produce ethanol, which can be used in cars instead of, or in combination with, traditional gasoline.

Polysaccharide (sugar) cellulose is the most widely consumed component of woody plants. In the context of a paper mill, cellulose becomes pulp for use in making paper. The second largest component of hardwood trees is the polysaccharide xylan, which is primarily dissolved in the pulping process.

Although the energy factor is the focus of attention now, there is a second benefit to the process. In addition to extracting sugar, scientists can separate out the wood's acetic acid, which is used to manufacture polyvinyl acetate, a plastic used in many aspects of home construction. It is also used to make many other consumer products. The commercial value of acetic acid is nearly three times that of ethanol: 45 cents/lb as opposed to 18 cents/lb. One advantage to the process is it uses no harsh chemicals. "Water is my preferred solvent because if it gets loose in the world, the world knows how to deal with it," says Amidon.

