Biotechnology Is Playing a Key Role in the Rapid Expansion of the Ethanol Industry
Ethanol can be made from cellulosic biomass - plant matter composed of inedible cellulose fibers that form the stems and branches of most plants. Crop residues (such as corn stalks, wheat straw and rice straw), wood waste, and even municipal solid waste are potential sources of cellulosic biomass. Dedicated energy crops, such as switchgrass or fast-growing trees, are also promising cellulose sources because they can be sustainably produced in many regions of the United States.
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