LIGNIN PRECIPTITATION ON THE FIBER SURFACE IN THE ETHANOL-BASED ORGANOSOLV PULPINGOF WHEAT STRAW

机译：小麦秸秆中乙醇基有机溶剂浆中纤维表面的木质素沉淀

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Ethanol pulping of wheat straw was conducted to investigate the precipitation of dissolved lignin back on the fibers in pulping and washing. Results show that large amount of lignin particles are presented on the fibers after pulping and each stage of washing in a four-stage washing sequence, which was identified by both light microscopy and SEM and XPS. When the ethanol concentration of a lignin ethanol solution reduces or temperature drops as in pulp washing process, lignin precipitation occurs. It has been concluded that high Kappa number of ethanol pulp is mainly due to the precipitation of the dissolved lignin from the pulping liquor, which accounts for the easy bleachability of the ethanol pulp.

机译：进行小麦秸秆的乙醇制浆，以研究制浆和洗涤过程中溶解的木质素在纤维上的沉淀。结果表明，在制浆后以及在四阶段洗涤顺序中的每一洗涤阶段，纤维上均存在大量木质素颗粒，这可以通过光学显微镜，SEM和XPS进行鉴定。当在纸浆洗涤过程中，木质素乙醇溶液中的乙醇浓度降低或温度下降时，就会发生木质素沉淀。已经得出结论，乙醇纸浆的高卡伯值主要是由于溶解的木质素从制浆液中的沉淀，这说明了乙醇纸浆的易漂白性。

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来源
《New Technologies in Non-wood Fiber Pulping and Papermaking》|2006年|51-57|共7页
会议地点 Guangzhou(CN)
作者
Xu Yongjian; Li Kecheng; Zhang Meiyun;
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作者单位

Department of Chemical Engineering and Limerick Pulp and Paper Center, University of New Brunswick, Fredericton, NB Canada E3B 6C2;

College of Pulp and Paper Engineering, Shaanxi University of Science and Technology, Xianyang 712081, China;

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原文格式 PDF
正文语种 eng
中图分类造纸工业;
关键词
ethanol pulping; organolsolv pulping; lignin precipitation; wheat straw; SEM; XPS;

机译：乙醇制浆；有机溶剂制浆；木质素沉淀麦秸;扫描电镜XPS;

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专利

1. Characteristics of wheat straw lignins from ethanol-based organosolv treatment [J] . Huijgen W. J. J., Telysheva G., Arshanitsa A., Industrial Crops and Products . 2014,第Null期

机译：乙醇基有机溶剂处理的小麦秸秆木质素特性
2. Ethanol-based organosolv fractionation of wheat straw for the production of lignin and enzymatically digestible cellulose [J] . Wildschut J., Smit A.T., Reith J.H., Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies . 2013,第Null期

机译：小麦秸秆的乙醇基有机溶剂分馏，用于生产木质素和可酶消化的纤维素
3. Lignin precipitation on the pulp fibers in the ethanol-based organosolv pulping [J] . Xu YJ, Li KC, Zhang MY Colloids and Surfaces, A. Physicochemical and Engineering Aspects . 2007,第1a3期

机译：木质素沉淀在乙醇基有机溶剂制浆中的纸浆纤维上
4. LIGNIN PRECIPTITATION ON THE FIBER SURFACE IN THE ETHANOL-BASED ORGANOSOLV PULPINGOF WHEAT STRAW [C] . Xu Yongjian, Li Kecheng, Zhang Meiyun, International Non-wood Fiber Pulping and Papermaking Conference . 2006

机译：木质素的纤维表面在乙醇基有机溶胶浆浆草秸秆上
5. Process- Yield- Structure- Bioconversion of Organosolv Lignin from Wheat Straw [D] . Ramezani, Nasim 2019

机译：麦草中有机溶剂木质素的加工-产量-结构-生物转化
6. Direct Precipitation of Lignin Nanoparticles from Wheat Straw Organosolv Liquors Using a Static Mixer [O] . Stefan Beisl, Johannes Adamcyk, Anton Friedl 2020

机译：使用静态混合器直接从小麦秸秆有机溶剂酒中沉淀木质素纳米颗粒
7. Reactive Organosolv Lignin Extraction from Wheat Straw: Influence of Lewis Acid Catalysts on Structural and Chemical Properties of Lignins [O] . Constant, Sandra, Basset, Charlie, Dumas, Claire, 2015

机译：麦草中反应性有机溶剂木质素的提取：路易斯酸催化剂对木质素结构和化学性质的影响

LIGNIN PRECIPTITATION ON THE FIBER SURFACE IN THE ETHANOL-BASED ORGANOSOLV PULPINGOF WHEAT STRAW

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