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首页> 外文期刊>Applied Energy >Process design and economics for production of advanced biofuels from genetically modified lipid-producing sorghum
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Process design and economics for production of advanced biofuels from genetically modified lipid-producing sorghum

机译：用转基因产脂高粱生产高级生物燃料的工艺设计和经济学

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摘要

This study evaluates the potential for making advanced biofuels from genetically modified (GM) lipid producing sorghum. A biodiesel coproduction process is developed to extract, purify, and upgrade lipids to diesel fuel while carbohydrates are utilized for making ethanol through acid thermal pretreatment, enzymatic hydrolysis, and fermentation. To assess the advantages of coproducing biodiesel from GM sorghum, process economics are compared to a cellulosic ethanol biorefinery receiving non-GM sorghum. Minimum ethanol selling prices (MESP) that reach a breakeven point after 30 years of service life are calculated as an economic index to compare the two processes. Results indicate that biodiesel coproduction improves the economics by lowering the MESP from $3.08/gal for the ethanol-only process to $2.46/gal. Sensitivity analyses reveal that increasing sorghum's lipid content, increasing the lipid extraction efficiency, and reducing the solvent-to-solids ratio in lipid extraction columns are the most important process parameters to further enhance technoeconomics. Analyses indicate that a lipid content above 13 wt% (dry basis) or a biomass price less than $65/Mg (dry basis) will result in a 2014 ethanol wholesale price of $2.25/gal for the coproduction process.
机译：这项研究评估了使用转基因（GM）脂质生产高粱生产高级生物燃料的潜力。开发了生物柴油联产工艺，以将脂质提取，纯化和提升为柴油燃料，而碳水化合物则通过酸热预处理，酶促水解和发酵来制备乙醇。为了评估由转基因高粱生产联产生物柴油的优势，将过程经济学与接受非转基因高粱的纤维素乙醇生物精炼厂进行了比较。计算出使用寿命超过30年后达到收支平衡点的最低乙醇销售价格（MESP），作为比较这两个过程的经济指标。结果表明，生物柴油联产可将MESP从仅乙醇工艺的3.08美元/加仑降低到2.46美元/加仑，从而改善了经济效益。敏感性分析表明，增加高粱脂质含量，提高脂质提取效率和降低脂质提取塔中的溶剂/固体比率是进一步提高技术经济性的最重要的工艺参数。分析表明，脂质含量高于13 wt％（干基）或生物质价格低于$ 65 / Mg（干基），2014年联合生产工艺的乙醇批发价为2.25美元/加仑。

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  • 来源
    《Applied Energy》 |2019年第1期|1459-1470|共12页
  • 作者

    Fasahati Peyman; Liu J. Jay; Ohlrogge John B.; Saffron Christopher M.;

  • 作者单位

    Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, 1129 Farm Lane, E Lansing, MI 48824 USA|Michigan State Univ, Dept Biosyst & Agr Engn, 216 Farrall Hall, E Lansing, MI 48824 USA;

    Pukyong Natl Univ, Dept Chem Engn, 365 Sinseon Ro, Busan 608739, South Korea;

    Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA;

    Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, 1129 Farm Lane, E Lansing, MI 48824 USA|Michigan State Univ, Dept Biosyst & Agr Engn, 216 Farrall Hall, E Lansing, MI 48824 USA|Michigan State Univ, Dept Chem Engn & Mat Sci, 428 S Shaw Lane, E Lansing, MI 48824 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biorefinery; Biodiesel; Bioethanol; Process design; Technoeconomic analysis; Genetically modified sorghum;

    机译：生物炼制;生物柴油;生物乙醇;工艺设计;技术经济分析;转基因高粱;

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