Ultrasound effect on a biorefinery lignin-cellulose mixture

Forest biorefineries provide multiple new avenues for applied research. The main concept lies in the malleability of the processes and their stepwise organization. The core element of the biorefinery concept addressed in the present study is the pretreatment step; here, wood biomass is converted int...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2024-12, Vol.111, p.107071, Article 107071
Main Authors: Puss, Kait Kaarel, Paaver, Peeter, Loog, Mart, Salmar, Siim
Format: Article
Language:English
Subjects:
Forest biorefinery
Lignin-cellulose mixture
Nanocellulose
Original
Power ultrasound
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Summary:Forest biorefineries provide multiple new avenues for applied research. The main concept lies in the malleability of the processes and their stepwise organization. The core element of the biorefinery concept addressed in the present study is the pretreatment step; here, wood biomass is converted into free hemicellulosic sugars, lignin and cellulose. In traditional approaches, the pretreatment step is a starting point for isolating and separating lignin or cellulose through different processes. In this study, instead of performing any separation, a lignin-cellulose mixture was used as its own material, and the effects of ultrasound treatment with a probe system at 20 kHz, with various amplitude, sonication time and dry matter content were investigated with the aim of assessing the formation of a nanocellulose structure with a high lignin content (>30 %) and investigating the stability of the lignin-cellulose mixture under aqueous conditions. We demonstrated the importance of dry matter content for the specific particle size and water retention values for this mixture. US treatment of lignin-cellulose mixtures
ISSN:1350-4177
1873-2828
1873-2828
DOI:10.1016/j.ultsonch.2024.107071