Allocation procedure in ethanol production system from corn grain: I. System expansion

    Research output: Research - peer-reviewArticle

    • 133 Citations

    Abstract

    We investigated the system expansion approach to net energy analysis for ethanol production from domestic corn grain. Production systems included in this study are ethanol production from corn dry milling and corn wet milling, corn grain production (the agricultural system), soybean products from soybean milling (i.e. soybean oil and soybean meal) and urea production to determine the net energy associated with ethanol derived from corn grain. These five product systems are mutually interdependent. That is, all these systems generate products which compete with or displace all other comparable products in the market place. The displacement ratios between products compare the equivalence of their marketplace functions. The net energy, including transportation to consumers, is 0.56 MJnet/MJ of ethanol from corn grain regardless of the ethanol production technology employed. Using ethanol as a liquid transportation fuel could reduce domestic use of fossil fuels, particularly petroleum. Sensitivity analyses show that the choice of allocation procedures has the greatest impact on fuel ethanol net energy. Process energy associated with wet milling, dry milling and the corn agricultural process also significantly influences the net energy due to the wide ranges of available process energy values. The system expansion approach can completely eliminate allocation procedures in the foreground system of ethanol production from corn grain.

    LanguageEnglish (US)
    Pages237-243
    Number of pages7
    JournalInternational Journal of Life Cycle Assessment
    Volume7
    Issue number4
    StatePublished - 2002

    Profile

    production system
    ethanol
    maize
    allocation
    Ethanol
    energy
    product
    soybean
    energy process
    Ethanol fuels
    Soybean oil
    Fossil fuels
    Urea
    Crude oil
    Liquids
    Soybean Oil
    Petroleum
    farming system
    urea
    fossil fuel

    Keywords

    • Allocation
    • Corn
    • Ethanol
    • Life cycle assessment
    • Net energy
    • Sensitivity analysis
    • System expansion

    ASJC Scopus subject areas

    • Environmental Engineering
    • Environmental Science(all)
    • Environmental Chemistry

    Cite this

    @article{cb9d40f14a4541c0a3344c8a459f791f,
    title = "Allocation procedure in ethanol production system from corn grain: I. System expansion",
    abstract = "We investigated the system expansion approach to net energy analysis for ethanol production from domestic corn grain. Production systems included in this study are ethanol production from corn dry milling and corn wet milling, corn grain production (the agricultural system), soybean products from soybean milling (i.e. soybean oil and soybean meal) and urea production to determine the net energy associated with ethanol derived from corn grain. These five product systems are mutually interdependent. That is, all these systems generate products which compete with or displace all other comparable products in the market place. The displacement ratios between products compare the equivalence of their marketplace functions. The net energy, including transportation to consumers, is 0.56 MJnet/MJ of ethanol from corn grain regardless of the ethanol production technology employed. Using ethanol as a liquid transportation fuel could reduce domestic use of fossil fuels, particularly petroleum. Sensitivity analyses show that the choice of allocation procedures has the greatest impact on fuel ethanol net energy. Process energy associated with wet milling, dry milling and the corn agricultural process also significantly influences the net energy due to the wide ranges of available process energy values. The system expansion approach can completely eliminate allocation procedures in the foreground system of ethanol production from corn grain.",
    keywords = "Allocation, Corn, Ethanol, Life cycle assessment, Net energy, Sensitivity analysis, System expansion",
    author = "Seungdo Kim and Dale, {Bruce E.}",
    year = "2002",
    volume = "7",
    pages = "237--243",
    journal = "International Journal of Life Cycle Assessment",
    issn = "0948-3349",
    publisher = "Springer Science + Business Media",
    number = "4",

    }

    TY - JOUR

    T1 - Allocation procedure in ethanol production system from corn grain

    T2 - International Journal of Life Cycle Assessment

    AU - Kim,Seungdo

    AU - Dale,Bruce E.

    PY - 2002

    Y1 - 2002

    N2 - We investigated the system expansion approach to net energy analysis for ethanol production from domestic corn grain. Production systems included in this study are ethanol production from corn dry milling and corn wet milling, corn grain production (the agricultural system), soybean products from soybean milling (i.e. soybean oil and soybean meal) and urea production to determine the net energy associated with ethanol derived from corn grain. These five product systems are mutually interdependent. That is, all these systems generate products which compete with or displace all other comparable products in the market place. The displacement ratios between products compare the equivalence of their marketplace functions. The net energy, including transportation to consumers, is 0.56 MJnet/MJ of ethanol from corn grain regardless of the ethanol production technology employed. Using ethanol as a liquid transportation fuel could reduce domestic use of fossil fuels, particularly petroleum. Sensitivity analyses show that the choice of allocation procedures has the greatest impact on fuel ethanol net energy. Process energy associated with wet milling, dry milling and the corn agricultural process also significantly influences the net energy due to the wide ranges of available process energy values. The system expansion approach can completely eliminate allocation procedures in the foreground system of ethanol production from corn grain.

    AB - We investigated the system expansion approach to net energy analysis for ethanol production from domestic corn grain. Production systems included in this study are ethanol production from corn dry milling and corn wet milling, corn grain production (the agricultural system), soybean products from soybean milling (i.e. soybean oil and soybean meal) and urea production to determine the net energy associated with ethanol derived from corn grain. These five product systems are mutually interdependent. That is, all these systems generate products which compete with or displace all other comparable products in the market place. The displacement ratios between products compare the equivalence of their marketplace functions. The net energy, including transportation to consumers, is 0.56 MJnet/MJ of ethanol from corn grain regardless of the ethanol production technology employed. Using ethanol as a liquid transportation fuel could reduce domestic use of fossil fuels, particularly petroleum. Sensitivity analyses show that the choice of allocation procedures has the greatest impact on fuel ethanol net energy. Process energy associated with wet milling, dry milling and the corn agricultural process also significantly influences the net energy due to the wide ranges of available process energy values. The system expansion approach can completely eliminate allocation procedures in the foreground system of ethanol production from corn grain.

    KW - Allocation

    KW - Corn

    KW - Ethanol

    KW - Life cycle assessment

    KW - Net energy

    KW - Sensitivity analysis

    KW - System expansion

    UR - http://www.scopus.com/inward/record.url?scp=0036338983&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0036338983&partnerID=8YFLogxK

    M3 - Article

    VL - 7

    SP - 237

    EP - 243

    JO - International Journal of Life Cycle Assessment

    JF - International Journal of Life Cycle Assessment

    SN - 0948-3349

    IS - 4

    ER -