Abstract

Extraction of cellulose from nonwoody plant materials by an electric discharge method is studied by taking flax fiber as an example. The possibility of adapting the electric discharge method, as a means to act on materials, to the problem of delignification of and extraction of cellulose from fibers of annual plants is addressed. The conditions in which an electric discharge in water is accompanied by a set of phenomena typical of cavitation processes in liquids are described. The circuit designs for electric discharge processing of flax fiber and their energy parameters established experimentally in this work enable α-cellulose extractions with a yield of 70–83%. It is found that raising the energy per pulse in excess of 125 J is not advantageous in terms of obtaining the highest yield of α-cellulose. In addition, presoaking of flax fiber is shown to be essential to extractions of α-cellulose with the highest yield. Abandoning the use of chemical reagents in delignification of flax fiber by the electric discharge method makes it a promising alternative to existing ecologically unsafe delignification methods.

中文翻译：

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放电空化从亚麻纤维中提取纤维素

摘要

以亚麻纤维为例，研究了通过放电法从非木本植物材料中提取纤维素的方法。解决了使放电方法作为对材料起作用的手段来适应一年生植物纤维的去木质素和从中提取纤维素的问题的可能性。描述了在水中放电伴随着液体中空化过程的一组典型现象的条件。这项工作中通过实验建立的用于亚麻纤维放电处理的电路设计及其能量参数，使α-纤维素的提取率达到70-83％。已经发现，将每个脉冲的能量提高到超过125J不利于获得最高的α-纤维素产率。此外，亚麻纤维的预浸对以最高收率提取α-纤维素至关重要。通过放电方法放弃在亚麻纤维的脱木质素中使用化学试剂，使其成为现有生态上不安全的脱木质素方法的有前途的替代方法。