Pretreatment of sugarcane bagasse using hydrodynamic cavitation technology: Semi-continuous and continuous process

R. Terán Hilares, R. M. Dionízio, C. A. Prado, M. A. Ahmed, S. S. da Silva, J. C. Santos

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Development of new technologies for pretreatment of lignocellulosic biomass is a current research challenge. In this way, hydrodynamic cavitation (HC) was used to assist alkaline hydrogen peroxide pretreatment of sugarcane bagasse (SCB) in sequential batches (SB-HC), semi-continuous (SC-HC) and continuous (C-HC) processes. Pretreatment resulted in compositional modifications in the material, mainly regarding the cellulose and lignin contents. The released sugars after enzymatic hydrolysis resulted, on average, in 42 g and 32–35 g of glucose per 100 g of SCB for samples treated in B-HC (10 min of process) and SC-HC process (7.5 min residence time), respectively. In C-HC process, with an average residence time of 7.5 min and 3.75 min, 38–46 g and 32–38 g of glucose per 100 g of SCB were obtained respectively in enzymatic hydrolysis step. HC technology was shown as a promising alternative for pretreatment of lignocellulosic biomass in all evaluated configurations aiming to produce high value bioproducts.

Original languageEnglish
Article number121777
JournalBioresource Technology
Volume290
DOIs
StatePublished - Oct 2019
Externally publishedYes

Keywords

  • Biorefinery
  • Continuous pretreatment
  • Hydrodynamic cavitation
  • Lignocellulosic biomass

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