Vertical distribution of structural components in corn stover
- USDA-Agricultural Research Service, Morris, MN (United States)
- USDA-Agricultural Research Service, Ames, IA (United States)
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- USDA-Agricultural Research Service, Florence, SC (United States)
- USDA-Agricultural Research Service, Mandan, ND (United States)
- USDA-Agricultural Research Service, Lincoln, NE (United States)
- Iowa State University, Ames, IA (United States)
- USDA-Agricultural Research Service, St. Paul, MN (United States)
- Oklahoma State Univ., Stillwater, OK (United States)
- USDA-Agricultural Research Service, Fort Collins, CO (United States)
- University of Wisconsin, Madison, WI (United States)
- CPESC #651, Labadie, MO (United States)
In the United States, corn (Zea mays L.) stover has been targeted for second generation fuel production and other bio-products. Our objective was to characterize sugar and structural composition as a function of vertical distribution of corn stover (leaves and stalk) that was sampled at physiological maturity and about three weeks later from multiple USA locations. A small subset of samples was assessed for thermochemical composition. Concentrations of lignin, glucan, and xylan were about 10% greater at grain harvest than at physiological maturity, but harvestable biomass was about 25% less due to stalk breakage. Gross heating density above the ear averaged 16.3 ± 0.40 MJ kg⁻¹, but with an alkalinity measure of 0.83 g MJ⁻¹, slagging is likely to occur during gasification. Assuming a stover harvest height of 10 cm, the estimated ethanol yield would be >2500 L ha⁻¹, but it would be only 1000 L ha⁻¹ if stover harvest was restricted to the material from above the primary ear. Vertical composition of corn stover is relatively uniform; thus, decision on cutting height may be driven by agronomic, economic and environmental considerations.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC07-05ID14517; FC36-05GO85041
- OSTI ID:
- 1208602
- Journal Information:
- Agriculture, Vol. 4, Issue 4; ISSN 2077-0472
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
Physicochemical and Structural Characteristics of Corn Stover and Cobs After Physiological Maturity
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journal | June 2019 |
Grading Herbaceous Biomass for Biorefineries: a Case Study Based on Chemical Composition and Biochemical Conversion
|
journal | September 2019 |
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