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利用电晕放电提高纤维素快速热解产生的左旋葡聚糖雾滴的纯度并实现高效回收。

Purity improvement and efficient recovery of levoglucosan mist produced by fast pyrolysis of cellulose using corona discharge.

作者信息

Nomura Takashi, Minami Eiji, Kawamoto Haruo

机构信息

Graduate School of Energy Science, Kyoto University Yoshida-honmachi, Sakyo-ku Kyoto 606-8501 Japan

出版信息

RSC Adv. 2025 May 8;15(19):14876-14880. doi: 10.1039/d5ra01634g. eCollection 2025 May 6.

DOI:10.1039/d5ra01634g
PMID:40343311
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12060148/
Abstract

Cellulose can be efficiently decomposed through fast pyrolysis. However, the mist products generated during this process are difficult to collect efficiently because they remain suspended in the gas phase for an extended period (20-30 min). In this study, we attempted to overcome this problem by using corona discharge treatment to add static electricity, which allowed us to collect the mist products more effectively. This method facilitated the rapid agglomeration of mist products, primarily composed of levoglucosan (LG), allowing for their easy recovery as condensate. Conversely, the aldehydes produced as by-products of the pyrolysis process remained in the gas phase and were unaffected by the static electricity. Consequently, the application of corona discharge improved the purity of LG compared to the untreated process, providing valuable insights into the production of fermentable sugar solutions subsequent mild hydrolysis. These results demonstrate the feasibility of simultaneously recovering and refining products using static electricity.

摘要

纤维素可通过快速热解有效分解。然而，在此过程中产生的雾状产物难以有效收集，因为它们会在气相中长时间悬浮（20 - 30分钟）。在本研究中，我们试图通过使用电晕放电处理来添加静电来克服这个问题，这使我们能够更有效地收集雾状产物。这种方法促进了主要由左旋葡聚糖（LG）组成的雾状产物的快速团聚，使其易于作为冷凝物回收。相反，热解过程中产生的副产物醛类仍留在气相中，不受静电影响。因此，与未处理的过程相比，电晕放电的应用提高了LG的纯度，为后续温和水解生产可发酵糖溶液提供了有价值的见解。这些结果证明了使用静电同时回收和提纯产物的可行性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/ba226df4431a/d5ra01634g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/88ab63ebe6b5/d5ra01634g-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/987eca26489b/d5ra01634g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/fb85248bc94d/d5ra01634g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/ba226df4431a/d5ra01634g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/88ab63ebe6b5/d5ra01634g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/3837f13c49c4/d5ra01634g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/c12330b7586c/d5ra01634g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/8687e0fa7ead/d5ra01634g-f4.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/fb85248bc94d/d5ra01634g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6a7d/12060148/ba226df4431a/d5ra01634g-f7.jpg

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