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Investigation of Steam Explosion Pretreatment of Sawdust and Oat Straw to Improve Their Quality as Biofuel Pellets

Author

Listed:
  • Chukwuka Onyenwoke

    (Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada)

  • Lope G. Tabil

    (Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada)

  • Tim Dumonceaux

    (Agriculture and Agri-Food Canada, Saskatoon Research and Development Centre, 107 Science Place, Saskatoon, SK S7N 0X2, Canada)

  • Duncan Cree

    (Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada)

  • Edmund Mupondwa

    (Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
    Agriculture and Agri-Food Canada, Saskatoon Research and Development Centre, 107 Science Place, Saskatoon, SK S7N 0X2, Canada)

  • Phani Adapa

    (National Hydrology Research Centre, Global Institute for Water Security (GIWS), University of Saskatchewan, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada)

  • Chithra Karunakaran

    (Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada)

Abstract

Steam explosion pretreatment of sawdust and oat straw under mild, medium, and severe conditions was conducted to improve the quality of pellets generated from these feedstocks. This work examined the effects of temperature, time, and moisture content on the mechanical properties of biomass pellets. From the ANOVA conducted, the p -values of the regression models for all the response variables (dimensional stability, tensile strength, and pellet density) studied were significant ( p < 0.05), except for the pellet density of steam-pretreated oat straw pellets. The interaction of these three factors did not significantly affect the response variables of oat straw pellets. In addition, the higher heating value (HHV) of treated biomass increased up to a maximum of about 9.5% and 7% as compared with the non-treated sawdust and oat straw, respectively. In addition, an increment of about 3.6-fold and 3.1-fold in pellet tensile strength of steam-pretreated sawdust and oat straw was observed, respectively. Microstructural examination of the pellets from steam-pretreated biomass revealed that the material contained particles that were more closely bonded and featured a cemented surface with fewer pores when compared to particles from untreated oat straw and sawdust.

Suggested Citation

  • Chukwuka Onyenwoke & Lope G. Tabil & Tim Dumonceaux & Duncan Cree & Edmund Mupondwa & Phani Adapa & Chithra Karunakaran, 2022. "Investigation of Steam Explosion Pretreatment of Sawdust and Oat Straw to Improve Their Quality as Biofuel Pellets," Energies, MDPI, vol. 15(19), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7168-:d:928869
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    References listed on IDEAS

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    1. Onu Onu Olughu & Lope G. Tabil & Tim Dumonceaux & Edmund Mupondwa & Duncan Cree, 2021. "Comparative Study on Quality of Fuel Pellets from Switchgrass Treated with Different White-Rot Fungi," Energies, MDPI, vol. 14(22), pages 1-19, November.
    2. Xiao He & Lianjun Wang & Anthony Lau, 2020. "Investigation of Steam Treatment on the Sorption Behavior of Rice Straw Pellets," Energies, MDPI, vol. 13(20), pages 1-9, October.
    3. Mupondwa, Edmund & Li, Xue & Tabil, Lope & Sokhansanj, Shahab & Adapa, Phani, 2017. "Status of Canada's lignocellulosic ethanol: Part I: Pretreatment technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 178-190.
    4. Lam, Pak Sui & Lam, Pak Yiu & Sokhansanj, Shahab & Lim, C. Jim & Bi, Xiaotao T. & Stephen, James D. & Pribowo, Amadeus & Mabee, Warren E., 2015. "Steam explosion of oil palm residues for the production of durable pellets," Applied Energy, Elsevier, vol. 141(C), pages 160-166.
    5. Sarkar, Nibedita & Ghosh, Sumanta Kumar & Bannerjee, Satarupa & Aikat, Kaustav, 2012. "Bioethanol production from agricultural wastes: An overview," Renewable Energy, Elsevier, vol. 37(1), pages 19-27.
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    Cited by:

    1. Maria El Hage & Nicolas Louka & Sid-Ahmed Rezzoug & Thierry Maugard & Sophie Sablé & Mohamed Koubaa & Espérance Debs & Zoulikha Maache-Rezzoug, 2023. "Bioethanol Production from Woody Biomass: Recent Advances on the Effect of Pretreatments on the Bioconversion Process and Energy Yield Aspects," Energies, MDPI, vol. 16(13), pages 1-31, June.

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