Side by Side Comparison of Chemical Compounds Generated by Aqueous Pretreatments of Maize Stover, Miscanthus and Sugarcane Bagasse
Side by Side Comparison of Chemical Compounds Generated by Aqueous Pretreatments of Maize Stover, Miscanthus and Sugarcane Bagasse
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DOI：
10.1007/s12155-014-9480-2
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发表时间：
2014-12-01
影响因子：
3.6
通讯作者：
McQueen-Mason, Simon J.
中科院分区：
文献类型：
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作者：
Gomez, Leonardo D.;Vanholme, Ruben;McQueen-Mason, Simon J.
为了考察产生副产物的可能性，我们对一系列碱性和酸性水处理释放的化合物进行了表征，以及这些预处理对木质纤维材料糖化能力的影响。利用玉米秸秆、芒果和甘蔗渣这三种可能作为第二代生物燃料原料的生物质类型进行了对比试验。木质素从原料中的释放与剩余生物质糖化潜力相关，碱预处理后，三种原料的剩余糖化潜力都较高。与酸预处理相比，碱性预处理液中含有更多的戊糖和己糖的复杂混合物。此外，在碱性条件下，芳香族化合物和脂肪族化合物的复杂混合物以温度相关的方式释放到预处理液中，但在酸性条件下，这种释放要少得多。我们表明，三种原料以特定的方式与预处理条件相互作用，以产生不同范围的产品，强调了根据起始原料和预期结果量身定制预处理的必要性。
In order to examine the potential for coproduct generation, we have characterised chemical compounds released by a range of alkaline and acidic aqueous pretreatments as well as the effect of these pretreatments on the saccharification ability of the lignocellulosic material. Comparative experiments were performed using three biomass types chosen for their potential as second-generation biofuel feedstocks: maize stover, miscanthus and sugarcane bagasse. The release of lignin from the feedstock correlated with the residual biomass saccharification potential, which was consistently higher after alkaline pretreament for all three feedstock types. Alkaline pretreatment released more complex mixtures of pentose and hexose sugars into the pretreatment liquor than did acid pretreatment. In addition, complex mixtures of aromatic and aliphatic compounds were released into pretreatment liquors under alkaline conditions, in a temperature-dependent manner, but far less so under acidic conditions. We show that the three feedstocks characterised interact with the pretreatment conditions in a specific manner to generate different ranges of products, highlighting the need to tailor pretreatments to both the starting feedstock and desired outcomes.