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Mitigating the negative impact of soluble and insoluble lignin in biorefineries

机译：减轻可溶性和不溶性木质素在生物料理中的负面影响

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摘要

The presence of inhibitors is still an economic bottleneck that needs to be resolved in order to make the biorefineries feasible, requiring the development of technologies capable of improving their competitiveness in the biofuel marketplace. Soluble and insoluble lignin can impair the enzymatic hydrolysis process by inhibition, deactivation, and unproductive adsorption of enzymes. Washing the pretreated biomass or using lignin-blocking additives during saccharification could mitigate these negative effects in future biorefineries. Here, an investigation was performed of the combined mitigation processes, in terms of their technical and economic feasibility in an integrated first and second generation (1G2G) sugarcane biorefinery. Evaluation was made of the impacts of biomass washing and soybean protein addition, separately or in combination, on glucose yields for enzymatic hydrolysis in the presence of high (liquor) and low (buffer) concentrations of soluble inhibitors/deactivators. Combining washing and soybean protein addition provided the highest glucose yields, with an increase of up to 50%. The effect of the mitigation processes could be explained by a combination of catalytic mechanisms acting on both soluble and insoluble lignin. In an industrial context, biomass washing (90 degrees C, 15% (w/w) solids, 3 steps) followed by soybean protein addition (12% (w/v) solids) provided a cost-competitive methodology for bioethanol production, with an estimated net present value of US$ 9.16 x 10(7), optimizing hydrolysis process in the 1G2G sugarcane biorefinery. (C) 2021 Elsevier Ltd. All rights reserved.
机译：抑制剂的存在仍然是需要解决的经济瓶颈，以便制作生物猎犬可行的，需要开发能够提高生物燃料市场竞争力的技术。可溶性和不溶性木质素可以通过抑制，失活和未加工的酶吸附而损害酶水解过程。在糖化期间洗涤预处理的生物质或使用木质素凋亡的添加剂可以减轻未来的生物档案中的这些负面影响。在这里，在综合的第一代和第二代（1G2G）甘蔗生物颗粒中的技术和经济可行性方面对组合缓解过程进行调查。评价是对生物质洗涤和大豆蛋白的影响，单独或组合的影响在高（液）和低（缓冲液）浓度的可溶性抑制剂/去激活剂​​的存在下酶水解的葡萄糖产率。结合洗涤和大豆蛋白的添加提供了最高的葡萄糖产率，增长高达50％。缓解过程的效果可以通过作用于可溶性和不溶性木质素的催化机制的组合来解释。在产业环境中，生物质洗涤（90℃，15％（w / w）固体，3个步骤），然后进行大豆蛋白加入（12％（w / v）固体）为生物乙醇生产提供了成本竞争力的方法，具有估计净值为9.16×10（7），优化1g2g甘蔗生物颗粒中的水解过程。 （c）2021 elestvier有限公司保留所有权利。

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  • 来源
    《Renewable energy》 |2021年第8期|1017-1026|共10页
  • 作者

    Pinto Ariane S. S.; Brondi Mariana G.; de Freitas Juliana V.; Furlan Felipe F.; Ribeiro Marcelo P. A.; Giordano Roberto C.; Farinas Cristiane S.;

  • 作者单位

    Univ Fed Sao Carlos Grad Program Chem Engn POB 676 BR-13565905 Sao Carlos SP Brazil|Embrapa Instrumentat Rua XV Novembro 1452 BR-13560970 Sao Carlos SP Brazil;

    Univ Fed Sao Carlos Grad Program Chem Engn POB 676 BR-13565905 Sao Carlos SP Brazil|Embrapa Instrumentat Rua XV Novembro 1452 BR-13560970 Sao Carlos SP Brazil;

    Univ Fed Sao Carlos Grad Program Chem Engn POB 676 BR-13565905 Sao Carlos SP Brazil|Embrapa Instrumentat Rua XV Novembro 1452 BR-13560970 Sao Carlos SP Brazil;

    Univ Fed Sao Carlos Chem Engn Dept POB 676 BR-13565905 Sao Carlos SP Brazil;

    Univ Fed Sao Carlos Grad Program Chem Engn POB 676 BR-13565905 Sao Carlos SP Brazil|Univ Fed Sao Carlos Chem Engn Dept POB 676 BR-13565905 Sao Carlos SP Brazil;

    Univ Fed Sao Carlos Grad Program Chem Engn POB 676 BR-13565905 Sao Carlos SP Brazil|Univ Fed Sao Carlos Chem Engn Dept POB 676 BR-13565905 Sao Carlos SP Brazil;

    Univ Fed Sao Carlos Grad Program Chem Engn POB 676 BR-13565905 Sao Carlos SP Brazil|Embrapa Instrumentat Rua XV Novembro 1452 BR-13560970 Sao Carlos SP Brazil;

  • 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

    1G2G ethanol; Pretreatment byproducts; Washing process; Soybean protein addition; Techno-economic assessment;

    机译：1G2G乙醇;预处理副产品;洗涤过程;大豆蛋白添加;技术经济评估;

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