Biorefining of wheat straw using an acetic and formic acid based organosolv fractionation process
Biorefining of wheat straw using an acetic and formic acid based organosolv fractionation process
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DOI：
10.1016/j.biortech.2014.01.069
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发表时间：
2014-03-01
影响因子：
11.4
通讯作者：
Courtin, Christophe M.
中科院分区：
文献类型：
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作者：
Snelders, Jeroen;Dornez, Emmie;Courtin, Christophe M.
为了评估小麦秸秆的乙酸和甲酸有机溶剂分馏作为整体生物精炼概念基础的潜力，需要对所获得的物流的产量、组成和纯度有详细的了解。因此，进行了该过程，对所有馏分进行了广泛的表征并研究了质量平衡。纤维素浆产率为秸秆干物质的 48%，而富含木质素和半纤维素的部分的纤维素浆产率为 21% 和 27%。成分分析表明，在此过程中，67%的麦秆木聚糖和96%的木质素被溶解，产生纯度为63%的纤维素浆，含有93%的麦秆纤维素。分离出的木质素级分含有84%的初始木质素，纯度为78%。大部分麦秆木聚糖（58%）最终形成富含半纤维素的部分，其中一半为单体木糖，以及蛋白质（44%）、矿物质（69%）和加工过程中使用的大量酸。 (C) 2014 Elsevier Ltd. 保留所有权利。
To assess the potential of acetic and formic acid organosolv fractionation of wheat straw as basis of an integral biorefinery concept, detailed knowledge on yield, composition and purity of the obtained streams is needed. Therefore, the process was performed, all fractions extensively characterized and the mass balance studied. Cellulose pulp yield was 48% of straw dry matter, while it was 21% and 27% for the lignin and hemicellulose-rich fractions. Composition analysis showed that 67% of wheat straw xylan and 96% of lignin were solubilized during the process, resulting in cellulose pulp of 63% purity, containing 93% of wheat straw cellulose. The isolated lignin fraction contained 84% of initial lignin and had a purity of 78%. A good part of wheat straw xylan (58%) ended up in the hemicellulose-rich fraction, half of it as monomeric xylose, together with proteins (44%), minerals (69%) and noticeable amounts of acids used during processing. (C) 2014 Elsevier Ltd. All rights reserved.