The Spanish energy company Abengoa opened the world’s largest cellulosic refinery in Hugoton, about 90 miles southwest of Dodge City, Kansas, said Biofuels Digest. The plant has a capacity of 25 million gallons a year of ethanol a year, produced from corn stover, wheat straw, milo stubble and switchgrass. It is the second of three large U.S. plants… » Read More