There is no simple solution to the energy problem. Crops, such as corn, compete with the food supply. Poplars and other trees could provide a sustainable alternative for ethanol production; however, they require costly pretreatment before processing into ethanol. Researchers at North Carolina State University (NCSU) have identified a potential solution to the problem.
Currently, the ethanol industry provides about four billion gallons of ethanol to the fuel market, which is expected to grow. Developing a process that effectively makes ethanol from cellulose derived from different types of plant biomass, particularly wood, remains difficult due to one significant barrier. The barrier is known as lignin.