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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Innovative Deconstruction of Biomass Induced by Dry Chemo-Mechanical Activation: Impact on Enzymatic Hydrolysis and Energy Efficiency
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Innovative Deconstruction of Biomass Induced by Dry Chemo-Mechanical Activation: Impact on Enzymatic Hydrolysis and Energy Efficiency

机译：干化学机械活化诱导的生物质的创新解构：对酶水解和能源效率的影响

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摘要

Lignocellulose fractionation to chemicals and biofuels often requires severe conditions and consume high energy. Although some of these pretreatment processes are nowadays developed at pilot scale, they are not always cost effective, and they are responsible for environmental impacts. Recently, mechanocatalysis pretreatment emerged as a promising technology for the activation and deconstruction of lignocellulosic biomass. In particular, these dry processes have the potential to limit the use of solvent and the production of liquid effluents. In this study, we propose an innovative one-pot eco-friendly approach based on the combination of dry chemical and vibro-ball-milling (VBM) for biomass activation, coupled to enzymatic conversion without an external source of heating, and without the assistance of any organic solvent. NaOH activation coupling to VBM fractionation for 10, 30, and 60 min was compared to H3PO4, H2O2, betaine, and betaine-Cl activation. NaOH-VBM-10 min appears more effective in sugar production compared to other chemical-mechanical activation. NaOH-VBM in 10 min consumed less energy, resulting in higher energy efficiency compared to that of other chemical-mechanical activation. Therefore, NaOH-VBM-10 min appears the most suitable and interesting pretreatment for the production of sugars and biofuels from corn stover biomass.
机译：将木质纤维素分级分离为化学物质和生物燃料通常需要严格的条件并消耗大量能量。尽管这些预处理过程中的一些如今已在中试规模上开发，但它们并不总是具有成本效益，并且对环境造成了影响。最近，机械催化预处理作为木质纤维素生物质的活化和解构的有前途的技术出现。特别地，这些干燥过程具有限制溶剂使用和液体流出物生产的潜力。在这项研究中，我们提出了一种创新的一锅式环保方法，该方法基于干化学和振动球磨（VBM）的结合来进行生物质活化，并且无需外部加热和辅助即可进行酶促转化任何有机溶剂。将与VBM分馏10分钟，30分钟和60分钟耦合的NaOH活化与H3PO4，H2O2，甜菜碱和甜菜碱-Cl活化进行了比较。与其他化学机械活化相比，NaOH-VBM-10 min在制糖方面似乎更有效。与其他化学机械活化方法相比，NaOH-VBM在10分钟内消耗的能量更少，因此能效更高。因此，NaOH-VBM-10 min似乎是从玉米秸秆生物质生产糖和生物燃料的最合适，最有趣的预处理方法。

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