Researchers at the University of Georgia have announced they've developed a new technology that could greatly increase the ethanol yield produced from crops like Bermudagrass, switchgrass, Napiergrass and possibly even clippings from lawns:
According to UGA, its process uses a fast, mild, and acid-free pretreatment process to increase the amount of simple sugars released by inexpensive biomass by a factor of ten. UGA also says that corn stover or bagasse -- the waste material left behind after corn and sugar cane harvests -- can be used to produce ethanol with its process.
Professor of microbiology and chair of UGA's Bioenergy Task Force, Joy Peterson said in a statement, "Producing ethanol from renewable biomass sources such as grasses is desirable because they are potentially available in large quantities. Optimizing the breakdown of the plant fibers is critical to production of liquid transportation fuel via fermentation.”
The researchers say that the same plant materials used to produce ethanol in its process can be used to produce ethanol with other processes commonly used today. However, the process typically needed to convert the fibrous stalks, leaves, and blades of plant wastes into simple sugars requires soaking under high pressure and high temperatures. The process produces hazardous solutions and byproducts that must be removed and disposed of safely.
The UGA researchers say that their process is environmentally friendly and removes the harsh pre-treatment chemicals and the need to dispose of the harsh chemicals and side products produced using traditional methods.