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Bioresource and Agricultural Engineering

Selected Works

Switchgrass

Articles 1 - 3 of 3

Full-Text Articles in Engineering

Influence Of Ultrasonics In Ammonia Steeped Switchgrass For Enzymatic Hydrolysis, Melissa Tabada Montalbo-Lomboy, Gowrishankar Srinivasan, D. Raj Raman, Robert P. Anex Jr., David A. Grewell Sep 2015

Influence Of Ultrasonics In Ammonia Steeped Switchgrass For Enzymatic Hydrolysis, Melissa Tabada Montalbo-Lomboy, Gowrishankar Srinivasan, D. Raj Raman, Robert P. Anex Jr., David A. Grewell

Gowrishankar Srinivasan

The bioconversion of lignocellulosic materials into fuels is of great environmental and economic importance, because of the large amounts of feedstock (est. over 1 billion tons per year), the potentially low cost of this feedstock, and the potentially high net energy balance the overall process. Switchgrass (Panicum virgatum L.) is a candidate dedicated lignocellulosic feedstock in the US. However, lignocellulosic materials, including switchgrass, are hampered by the recalcitrance of lignocellulose to enzymatic degradation into fermentable sugars. Various types of pretreatment have been developed to overcome this recalcitrance. In this study, we examined sequential ammonia-steeping and ultrasound pretreatment of switchgrass. The …


Influence Of Ultrasonics In Ammonia Steeped Switchgrass For Enzymatic Hydrolysis, Melissa Tabada Montalbo-Lomboy, Gowrishankar Srinivasan, D. Raj Raman, Robert P. Anex Jr., David A. Grewell May 2015

Influence Of Ultrasonics In Ammonia Steeped Switchgrass For Enzymatic Hydrolysis, Melissa Tabada Montalbo-Lomboy, Gowrishankar Srinivasan, D. Raj Raman, Robert P. Anex Jr., David A. Grewell

Gowrishankar Srinivasan

The bioconversion of lignocellulosic materials into fuels is of great environmental and economic importance, because of the large amounts of feedstock (est. over 1 billion tons per year), the potentially low cost of this feedstock, and the potentially high net energy balance the overall process. Switchgrass (Panicum virgatum L.) is a candidate dedicated lignocellulosic feedstock in the US. However, lignocellulosic materials, including switchgrass, are hampered by the recalcitrance of lignocellulose to enzymatic degradation into fermentable sugars. Various types of pretreatment have been developed to overcome this recalcitrance. In this study, we examined sequential ammonia-steeping and ultrasound pretreatment of switchgrass. The …


Opportunities For Energy Crop Production Based On Subfield Scale Distribution Of Profitability, Ian J. Bonner, Kara G. Cafferty, David J. Muth, Mark D. Tomer, David E. James, Sarah A. Porter, Douglas L. Karlen Dec 2013

Opportunities For Energy Crop Production Based On Subfield Scale Distribution Of Profitability, Ian J. Bonner, Kara G. Cafferty, David J. Muth, Mark D. Tomer, David E. James, Sarah A. Porter, Douglas L. Karlen

Douglas L Karlen

Incorporation of dedicated herbaceous energy crops into row crop landscapes is a promising means to supply an expanding biofuel industry while benefiting soil and water quality and increasing biodiversity. Despite these positive traits, energy crops remain largely unaccepted due to concerns over their practicality and cost of implementation. This paper presents a case study for Hardin County, Iowa, to demonstrate how subfield decision making can be used to target candidate areas for conversion to energy crop production. Estimates of variability in row crop production at a subfield level are used to model the economic performance of corn (Zea mays L.) …