Today, researchers believe that it will be 10 years before the U.S. has high volume cellulosic ethanol production. Every week you can find a news article about the latest discovery. The researchers must test it at varying scales and production processes to make sure it works. They look at the efficiency at the commercial scale. The process must be cost effective so that it can compete with other fuels in the marketplace. from a current article on advanced biofuels published by a leading university No major publication even includes acid hydrolysis as a potential process currently under consideration Acid hydrolysis was dropped decades ago as not economically viable due largely to the enormous waste stream from the acid hydrolysis stage The most obvious clue in the Bluefire saga is the pilot plant in Japan that ceased operation, never published the results, and never re-started spec