Ultrasound-assisted biomass valorization to industrial interesting products: state-of-the-art, perspectives and challenges

[Display omitted] •Residual biomass as alternative for the production of fine chemicals and energy.•Acoustic cavitation, and other ultrasound-related effects, for improving biomass conversion.•Ultrasound has been extensively used to process aiming de pretreatment of biomass considered as waste.•Tech...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2021-04, Vol.72, p.105455-105455, Article 105455
Main Authors: Flores, Erico M.M., Cravotto, Giancarlo, Bizzi, Cezar A., Santos, Daniel, Iop, Gabrielle D.
Format: Article
Language:English
Subjects:
Biomass
Biomass conversion
Biotechnology - methods
Industry
Review
Sonochemical process intensification
Ultrasonic Waves
Ultrasound applications
Value-added products
Waste valorization
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Summary:[Display omitted] •Residual biomass as alternative for the production of fine chemicals and energy.•Acoustic cavitation, and other ultrasound-related effects, for improving biomass conversion.•Ultrasound has been extensively used to process aiming de pretreatment of biomass considered as waste.•Technological tool aiming to improve the biomass conversion into added value products.•Ultrasound as alternative for contributing with the scalability of the biomass conversion process. Nowadays, the application of ultrasound (US) energy for assisting the lignocellulosic biomass and waste materials conversion into value-added products has dramatically increased. In this sense, this review covers theoretical aspects, promising applications, challenges and perspectives about US and its use for biomass treatment. The combination of US energy with a suitable reaction time, temperature and solvent contributes to the destruction of recalcitrant lignin structure, allowing the products to be used in thermochemical and biological process. The main mechanisms related to US propagation and impact on the fragmentation of lignocellulosic materials, selectivity, and yield of conversion treatments are discussed. Moreover, the synergistic effects between US and alternative green solvents with the perspective of industrial applications are investigated. The present survey analysed the last ten years of literature, studying challenges and perspectives of US application in biorefinery. We were aiming to highlight value-added products and some new areas of research.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2020.105455