Bioresources Research Centre, Biosystems Engineering, UCD School of Biosystems, Belfield, Dublin 4, Ireland.
Bioresour Technol. 2013 Mar;131:202-9. doi: 10.1016/j.biortech.2012.12.013. Epub 2012 Dec 13.
This research details the characterisation of four Irish-grown lignocellulosic biomasses for pyrolysis by biomass composition analysis, TGA, and Py-GC/MS-FID. Ash content (mf) increased in the order spruce (0.26 wt.%) < salix (1.16 wt.%) < miscanthus (3.43 wt.%) < wheat straw (3.76 wt.%). Analysis of hydrolysis-derived sugar monomers showed that xylose concentrations (4.69–26.76 wt.%) ranged significantly compared to glucose concentrations (40.98–49.82 wt.%). Higher hemicellulose and ash contents probably increased non-volatile matter, and decreased the temperature of maximum degradation by TGA as well as yields of GC-detectable compounds by Py-GC/MS-FID. Differences in composition and degradation were reflected in the pyrolysate composition by lower quantities of sugars (principally levoglucosan), pyrans, and furans for salix, miscanthus, and wheat straw compared to spruce, and increased concentrations of cyclopentenones and acids.
本研究通过生物质成分分析、TGA 和 Py-GC/MS-FID 详细描述了四种爱尔兰种植的木质纤维素生物质的热解特性。灰分含量（干基）按云杉（0.26wt%）<柳枝稷（1.16wt%）<芒草（3.43wt%）<麦草（3.76wt%）的顺序增加。水解衍生糖单体分析表明，与葡萄糖浓度（40.98-49.82wt%）相比，木糖浓度（4.69-26.76wt%）差异显著。较高的半纤维素和灰分含量可能增加了非挥发性物质，降低了 TGA 的最大降解温度以及 Py-GC/MS-FID 可检测到的化合物产率。组成和降解的差异反映在热解产物组成上，与云杉相比，柳枝稷、芒草和麦草的糖（主要是左旋葡聚糖）、吡喃和呋喃的量较少，而环戊烯酮和酸的浓度增加。
