High biomass loadings of 40 wt% for efficient fractionation in biorefineries with an aqueous solvent system without adding adscititious catalyst
High biomass loadings of 40 wt% for efficient fractionation in biorefineries with an aqueous solvent system without adding adscititious catalyst
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高%20生物质%20loadings%20of%2040%20wt%%20for%20efficient%20fractionation%20in%20biorefineries%20with%20an%20aqueous%20solvent%20system%20without%20adding%20adscititious%20catalyst
DOI：
10.1039/c6gc02225a
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发表时间：
2016-11
期刊：
影响因子：
9.8
通讯作者：
Yun Liu
中科院分区：
文献类型：
--
作者：
Hua Zhou;Renli Zhang;Wang Zhan;Liuyang Wang;Lijun Guo;Yun Liu
木质纤维素生物炼制的发展需要改善的环境和成本效益的方法，除了定制的木质纤维素成分与所需的生物燃料和化学品。在此，我们首次报道了一种新的木质纤维素分级方法，该方法通过辐射辅助自催化（IASC），在固体生物质负载量高达40 wt%的情况下，使用由40 wt% γ-戊内酯和60 wt%水（40：60 GVL/H2O）组成的绿色溶剂水体系，不使用任何附加催化剂。 纤维素、半纤维素和木质素的每一部分都易于升级为所需的生物燃料和生物产品。生物质中的辐射介导的羧基、醛基和酚基作为弱活性酸位点，用于在40：60 GVL/H2O中裂解（半）纤维素，并随后自催化水解为可溶性碳水化合物及其衍生产物，其以80%的转化率催化升级为呋喃，和/或发酵升级为微生物油（生物质31 g L−1和脂质含量36.5 wt%）。 再生纤维素在SSF发酵过程中可以达到约184.3 g L−1单体葡萄糖（可溶性C5和C6糖的总浓度为231 g L−1）和88.5 g L−1的高潜在乙醇滴度。所获得的木质素还显示出对纳米颗粒功能材料和/或低分子芳族化合物的良好反应性。最后，在实验室水平的整体过程的质量平衡进行了初步评价。
Development of lignocellulosic biorefineries requires improved environmental and cost-effective processes in addition to tailoring the lignocellulosic constitutions with the desired biofuels and chemicals. Here, we first report a novel strategy of lignocellulose fractionation at solid biomass loadings up to 40 wt% through irradiation assisted self-catalysis (IASC) with a green solvent aqueous system consisting of 40 wt% γ-valerolactone and 60 wt% water (40 : 60 GVL/H2O) with no adscititious catalyst. Each fraction of cellulose, hemicellulsoe and lignin can be prone to upgrade to desired biofuels and bioproducts. The irradiation-mediated carboxyl, aldehyde, and phenol groups in biomass act as weak active acid sites for (hemi) cellulose cleavage in 40 : 60 GVL/H2O and their subsequent self-catalyzed hydrolysis to soluble carbohydrates and their derived products, which are catalytically upgraded to furans with an 80% conversion rate, and/or fermentative upgrading to microbial oils (biomass 31 g L−1 and lipid content 36.5 wt%). The regenerated cellulose can achieve approximately 184.3 g L−1 monomeric glucose (total concentration of soluble C5 and C6 sugars is 231 g L−1) and high potential ethanol titers of 88.5 g L−1 during SSF fermentation. The obtained lignin also showed good reactivity for valorization to nanoparticle functional materials and/or low molecular aromatics. In the end, the overall process mass balance at the laboratory-scale level was preliminarily evaluated.
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影响因子：
16.6
作者：
Anh The To;Chung, Po-Wen;Katz, Alexander
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影响因子：
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作者：
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通讯作者：
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