Green Ethanol Production From Soybean Lignocellulosic Biomass

Tuesday, October 18, 2011
Exhibit Hall B (Minneapolis Convention Center)
Stephanie Jung, Food Science and Human Nutrition, Iowa State University, Ames, IA

Many attempts have been made over the last decade to develop technology for production of ethanol as a liquid fuel from lignocellulosic biomass feedstocks. Interestingly soybean fiber co-product from the oil extraction process has had limited interest.  Soybean fiber recovered from environmentally friendly enzyme-assisted aqueous extraction (EAEP), leading to ~96% oil extraction yield, was investigated as a source of ethanol.  The fiber-rich fraction was obtained using protease (PAEP) or cellulase (CAEP).  The characteristics of the fiber-rich fraction obtained from each process will be compared and its potential as a source of ethanol reported. Comparison of various pre-treatments including soaking in aqueous ammonia and liquid hot water pretreatment will be examined and advantages of each pretreatment addressed.  Our best saccharification yield reached more than 80% and ethanol yield of up to 92% was obtained during simultaneous saccharification/fermentation.  The soybean fiber-rich fraction from these processes can therefore be considered as valuable sources for bioethanol production.  

Extended Abstract: File Not Uploaded
See more of this Session: Poster Session: Sustainability and Sustainable Biorefineries
See more of this Group/Topical: Sustainable Engineering Forum