Direct saccharification of lignocellulosic biomass by hydrolysis with formic acid solution
Direct saccharification of lignocellulosic biomass by hydrolysis with formic acid solution
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DOI：
10.1515/gps-2012-0090
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发表时间：
2013-04-01
影响因子：
4.3
通讯作者：
Mae, Kazuhiro
中科院分区：
文献类型：
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作者：
Hasegawa, Isao;Khoo, Teng Hong;Mae, Kazuhiro
研究了一种从木质纤维素生物质中直接回收低聚糖的有效水解方法。选择甲酸作为水解试剂，因为其在有机酸中的高酸性。纤维素水解和木质素洗脱的程度由反应温度和甲酸水溶液浓度的组合决定。我们成功地获得了约47wt%的低聚糖，在150 ℃和25vol%甲酸水溶液浓度下保持最小木质素洗脱。如此高的寡糖产量是由于生物质结构的松弛。此外，通过稀释甲酸水溶液浓度，或蒸发溶液，木质素可以作为沉积物与寡糖完全分离。最后，提出了两种有效回收二氧化碳的备选方案。
An effective hydrolysis method for recovering oligosaccharides directly from lignocellulosic biomass has been investigated. Formic acid was selected as a hydrolysis reagent, due to its high acidity in organic acids. The degrees of cellulose hydrolysis and lignin elution were determined by the combination of the reaction temperature and formic acid aqueous solution concentration. We successfully obtained approximately 47 wt% of oligosaccharides, keeping the minimum lignin elution at 150 degrees C and with 25 vol% formic acid aqueous solution concentration. Such a high yield of oligosaccharides was due to the relaxation of biomass structure. Furthermore, by diluting the formic acid aqueous solution concentration, or evaporating the solution, lignin can be separated from the oligosaccharides completely as deposits. Finally, two options for the efficient recovery of saccharides have been proposed.