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    Author(s): Lanxing Du; Jinwu Wang; Yang Zhang; Chusheng Qi; Michael P. Wolcott; Zhiming Yu
    Date: 2017
    Source: Bioresource Technology. 238: 254-262.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: Download Publication  (1.0 MB)


    This study demonstrated the technical potential for the large-scale co-production of sugars, lignosulfonates, cellulose, and cellulose nanocrystals. Ball-milled woods with two particle sizes were prepared by ball milling for 80 min or 120 min (BMW80, BMW120) and then enzymatically hydrolyzed. 78.3% cellulose conversion of BMW120 was achieved, which was three times as high as the conversion of BMW80. The hydrolyzed residues (HRs) were neutrally sulfonated cooking. 57.72 g/L and 88.16 g/L lignosulfonate concentration, respectively, were harvested from HR80 and HR120, and 42.6 ± 0.5% lignin were removed. The subsequent solid residuals were purified to produce cellulose and then this material was acidhydrolyzed to produce cellulose nanocrystals. The BMW120 maintained smaller particle size and aspect ratio during each step of during the multiple processes, while the average aspect ratio of its cellulose nanocrystals was larger. The crystallinity of both materials increased with each step of wet processing, reaching to 74% for the cellulose.

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    Du, Lanxing; Wang, Jinwu; Zhang, Yang; Qi, Chusheng; Wolcott, Michael P.; Yu, Zhiming. 2017. A co-production of sugars, lignosulfonates, cellulose, and cellulose nanocrystals from ball-milled woods. Bioresource Technology. 238: 254-262.


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    Sugars, lignosulfonates, cellulose, cellulose nanocrystals, co-production, particle size, aspect ratio, crystallinity, mass balance

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