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Increased Cellulosic Ethanol Productivity Through Enzyme Recycling and Yeast Cells Reuse

Executive SummaryCellulosic ethanol is produced from non-food based feedstock such as corn stover, the leaves and stalks of corn. This feedstock contains lignocellulose (cellulose, hemicellulose, and lignin), which must be hydrolyzed to release sugars, which are converted to ethanol. Three major issues impeding commercial production of cellulosic e...
Published: 1/30/2017   |   Inventor(s): Mingjie Jin, Venkatesh Balan, Bruce Dale
Keywords(s):   Category(s): Biotechnology, Energy, Agriculture

Downstream Fractionation of Extractive AFEX Lignin Streams

Executive SummaryEnzymatically processing lignocellulosic biomass for ethanol production results in the separation of cellulose and lignin. While cellulose can be used to create ethanol, the lignin extracted through standard paper pulping and other chemically harsh methods is generally considered unfit for commercial use due to impurities and heter...
Published: 6/16/2016   |   Inventor(s): Bruce Dale, Shishir Chundawat, Venkatesh Balan, Leonardo da Costa Sousa
Keywords(s):   Category(s): Chemicals, Energy, Materials

An Economical and Potent Mixture to Induce Cellulolytic Enzymes Production at High Concentration

IntroductionProducing biofuels from cellulosic materials, such as corn stalks, wood chips, and other biomass, requires the use of enzymes to degrade the cellulosic biomass into its molecular components. The cost to produce these enzymes is high, a factor contributing to the limited production of cellulosic ethanol. Description of TechnologyMichigan...
Published: 4/21/2011   |   Inventor(s): Ming Woei Lau, Bruce Dale, Venkatesh Balan, Shishir Chundawat
Keywords(s): Biodiesel, Biomass, Cellulose, Enzymes Category(s): Biotechnology, Chemicals, Materials

Lignocellulosic Biomass Pretreatment Using Gaseous Ammonia and Combinations with Hot Inert-Carrier Gases

IntroductionTo achieve high yields of glucose and other products for use in biofuels and bio-based chemicals, lignocellulose must first be pretreated. The goal of pretreatment is to decrease the crystallinity of cellulose, increase the biomass surface area, remove hemicellulose, and break the lignin seal. Current pretreatments use liquid ammonia, d...

A Novel Extractive Ammonia Fiber Expansion (AFEX) Process

IntroductionIn the continuing push to develop alternative fuels, bioethanol is clearly a viable option. However, if it is to become a truly economical alternative, a more effective and efficient method of processing lignocellulosic biomass must be developed. Description of Technology Michigan State University has developed a novel lignocellulosic b...
Venkatesh Balan