Hemicellulose biorefineries: a review on biomass pretreatments
Hemicellulose biorefineries: a review on biomass pretreatments
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发表时间：
2008
影响因子：
0.6
通讯作者：
F. Carvalheiro;L. C. Duarte;F. Girio
中科院分区：
文献类型：
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作者：
F. Carvalheiro;L. C. Duarte;F. Girio
生物质预处理（BP）在以木质纤维素为原料的生物炼制（LCFBR）中起着至关重要的作用，将三种主要的产出流（纤维素、半纤维素和木质素）加工成化学品和生物燃料。BP包括木质纤维素材料（LCM）在水、稀酸或碱性介质下的加工，以获得纤维素部分，然后发酵生产生物乙醇。由于缺乏将半纤维素糖有效发酵成乙醇的方法，半纤维素通常被当作二级流处理。这篇综述提供了bp假设半纤维素流应该被整合到LCFBR中，作为转化为除生物乙醇以外的增值化合物的主要馏分。分析了不同的LCM处理方法，预测了从半纤维素途径获得生物基产品的可能性。
Biomass pretreatment (BP) plays a crucial role in a lignocellulose feedstock-based biorefinery (LCFBR) for processing of three major output streams (cellulose, hemicelluloses and lignin) into chemicals and biofuels. BP includes processing of lignocellulosic material (LCM) under aqueous, dilute acid or alkaline media to obtain a cellulosic fraction, which is then fermented to produce bioethanol. Hemicellulose is usually treated as a secondary stream due to lack of efficient fermentation of hemicellulosic sugars to ethanol. This review provides BPs assuming that hemicellulose stream should be integrated in LCFBR as a primary fraction for converting into value-added compounds other than bioethanol. Different LCM treatments are analyzed foreseeing bio-based products possible to obtain from hemicellulose path.