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Cellulosic Hydrolysis Reactors

Cellulosic materials, such as corn stover, cane, switchgrass, timber waste, municipal solid waste, etc., can be processed into fuels and renewable chemicals. Broadly speaking, there are two main methods: pyrolysis and hydrolysis. The former is relatively independent of feedstock but happens at high temperatures and may have yield losses due to breakdown of the molecules […]

Second Generation Biofuels

Second generation biofuels are those made from sustainable feedstocks as defined by the feedstock’s availability, and its impact on greenhouse gas emissions and land use.  Examples of second generation biofuels are those made from algae, renewable fuels made via the Fischer-Tropsch process, cellulosic ethanol, dimethylfuran, and bio hydrogen.  Different from the first generation biofuels which […]

Cellulosic Ethanol Expert

Cellulosic ethanol is a biofuel produced from the fibrous cellulose and hemicellulose fractions of herbaceous (switchgrass, corn stover, miscanthus) or woody biomass, as opposed to a plant’s seeds or fruit. These feedstocks are mostly inedible, eliminating the “food v. fuel” arguments that sometime surround standard biofuels. Almost all routes to cellulosic ethanol involve biomass collection and delivery, followed by deconstruction […]

The Industrial State of Biofuels Technologies

By Dr. Gerald Kutney, Lee Enterprises Consulting A myriad of biofuel technologies exist, but which ones are truly industrial processes? The question is not always easy to answer. And one must define what is meant by an industrial process. To facilitate this task, three classifications of industrial status are utilized: Established – modern facilities are numerous, […]

Cellulosic ethanol, what happened, what’s happening?

The story of cellulosic ethanol in the United States has had more plot twists than The Crying Game, the acclaimed Hollywood brain twister—except that this story promises to end with a predictable happy ending. I believe cellulosic ethanol is here to stay for the long haul and it is finally exhibiting real potential to establish […]

Catalysts and Enzymes in Biofuel Production

by Elizabeth E. Hood, PhD and Lorenz Bauer, PhD Introduction An important mitigation strategy for the impact of fossil fuels on the environment is to use biofuels from renewable sources for transportation. The problem is that the cost of biofuel production is high and this nascent industry cannot compete with oil prices without subsidies. Biofuels […]