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Investigation of Process Variables in the Densification of Corn Stover Briquettes

Author

Listed:
  • Curtis P. Thoreson

    (Department of Agricultural and Biosystems Engineering, Iowa State University, 100 Davidson Hall, Ames, IA 50011, USA)

  • Keith E. Webster

    (Department of Agricultural and Biosystems Engineering, Iowa State University, 100 Davidson Hall, Ames, IA 50011, USA)

  • Matthew J. Darr

    (Department of Agricultural and Biosystems Engineering, Iowa State University, 100 Davidson Hall, Ames, IA 50011, USA)

  • Emily J. Kapler

    (Department of Agricultural and Biosystems Engineering, Iowa State University, 100 Davidson Hall, Ames, IA 50011, USA)

Abstract

The bulk density of raw corn stover is a major limitation to its large-scale viability as a biomass feedstock. Raw corn stover has a bulk density of 50 kg/m 3 , which creates significant transportation costs and limits the optimization of transport logistics. Producing a densified corn stover product during harvest would reduce harvest and transportation costs, resulting in viable pathways for the use of corn stover as a biomass feedstock. This research investigated the effect of different process variables (compression pressure, moisture content, particle size, and material composition) on a densification method that produces briquettes from raw corn stover. A customized bench-scale densification system was designed to evaluate different corn stover inputs. Quality briquette production was possible using non-reduced particle sizes and low compression pressures achievable in a continuous in-field production system. At optimized bench settings, corn stover was densified to a dry bulk density of 190 kg/m 3 . Corn stover with a moisture content above 25% wb was not suitable for this method of bulk densification, and greater cob content had a positive effect on product quality.

Suggested Citation

  • Curtis P. Thoreson & Keith E. Webster & Matthew J. Darr & Emily J. Kapler, 2014. "Investigation of Process Variables in the Densification of Corn Stover Briquettes," Energies, MDPI, vol. 7(6), pages 1-14, June.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:6:p:4019-4032:d:37429
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    Citations

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    Cited by:

    1. Albashabsheh, Nibal T. & Heier Stamm, Jessica L., 2019. "Optimization of lignocellulosic biomass-to-biofuel supply chains with mobile pelleting," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 122(C), pages 545-562.
    2. Chengjun Li & Zhongjia Chen & Qingchun Wang, 2022. "Effect of Temperature on Densification Pressure and the Unit Density in Production of Corn Straw Pellet with a Post-Heating Method," Energies, MDPI, vol. 15(3), pages 1-11, January.
    3. Hívila M. P. Marreiro & Rogério S. Peruchi & Riuzuani M. B. P. Lopes & Silvia L. F. Andersen & Sayonara A. Eliziário & Paulo Rotella Junior, 2021. "Empirical Studies on Biomass Briquette Production: A Literature Review," Energies, MDPI, vol. 14(24), pages 1-40, December.
    4. Niccolò Pampuro & Patrizia Busato & Eugenio Cavallo, 2018. "Effect of Densification Conditions on Specific Energy Requirements and Physical Properties of Compacts Made from Hop Cone," Energies, MDPI, vol. 11(9), pages 1-10, September.
    5. Peter Križan & Miloš Matú & Ľubomír Šooš & Juraj Beniak, 2015. "Behavior of Beech Sawdust during Densification into a Solid Biofuel," Energies, MDPI, vol. 8(7), pages 1-17, June.

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