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Crop Factors Influencing Ethanol Production from Sorghum Juice and Bagasse

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  • Lorenzo Capecchi

    (Department of Agricultural Sciences, University of Bologna, Viale Fanìn 44, 40127 Bologna, Italy)

  • Lorenzo Nissen

    (Department of Agricultural Sciences, University of Bologna, Viale Fanìn 44, 40127 Bologna, Italy)

  • Monica Modesto

    (Department of Agricultural Sciences, University of Bologna, Viale Fanìn 44, 40127 Bologna, Italy)

  • Giuseppe Di Girolamo

    (Department of Agricultural Sciences, University of Bologna, Viale Fanìn 44, 40127 Bologna, Italy)

  • Luciano Cavani

    (Department of Agricultural Sciences, University of Bologna, Viale Fanìn 44, 40127 Bologna, Italy)

  • Lorenzo Barbanti

    (Department of Agricultural Sciences, University of Bologna, Viale Fanìn 44, 40127 Bologna, Italy)

Abstract

This study investigated the effects of two soil moisture levels (SM) (30% and 70% soil available water) and three harvests (90 days, 118 days, and 151 days after seeding) on sweet (S506) and fiber (B133) sorghum genotypes under rain-sheltered conditions. Juice and bagasse-derived ethanol and their sum (EtOH BJ , EtOH B , and EtOH J+B , respectively) were assessed. Water use efficiency (WUE) was determined for sorghum dry weight (DW) and EtOH J+B . S506 had similar DW, but higher sugar content than B133, resulting in higher EtOH J (+32%) and EtOH J+B (+9%). High SM-enhanced DW, juice and sugars content, determining a strong EtOH J+B increase (+99% vs. low SM). Late harvest enhanced DW and EtOH J+B (+107% vs. early harvest), despite decreasing extractives and increasing structural fiber components. Water use efficiency of EtOH J+B improved with high vs. low SM, although differences faded in late harvest. Upscale of EtOH J+B and WUE data indicated a range of 21,000–82,000 ha of sorghum cultivation and 60–117 Mm 3 of irrigation water, as amounts of resources needed to supply an 85,000 m 3 ·yr ?1 bio-ethanol plant. This large variation in land and water needs depended on specific combinations between crop factors SM and harvests.

Suggested Citation

  • Lorenzo Capecchi & Lorenzo Nissen & Monica Modesto & Giuseppe Di Girolamo & Luciano Cavani & Lorenzo Barbanti, 2017. "Crop Factors Influencing Ethanol Production from Sorghum Juice and Bagasse," Energies, MDPI, vol. 10(7), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:940-:d:104006
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    References listed on IDEAS

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    Cited by:

    1. Rodica Niculescu & Adrian Clenci & Victor Iorga-Siman, 2019. "Review on the Use of Diesel–Biodiesel–Alcohol Blends in Compression Ignition Engines," Energies, MDPI, vol. 12(7), pages 1-41, March.
    2. Stamenković, Olivera S. & Siliveru, Kaliramesh & Veljković, Vlada B. & Banković-Ilić, Ivana B. & Tasić, Marija B. & Ciampitti, Ignacio A. & Đalović, Ivica G. & Mitrović, Petar M. & Sikora, Vladimir Š., 2020. "Production of biofuels from sorghum," Renewable and Sustainable Energy Reviews, Elsevier, vol. 124(C).

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