Hydrodynamic cavitation-assisted alkaline pretreatment as a new approach for sugarcane bagasse biorefineries

Ruly Terán Hilares, Júlio César dos Santos, Muhammad Ajaz Ahmed, Seok Hwan Jeon, Silvio Silvério da Silva, Jong In Han

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

Hydrodynamic cavitation (HC) was employed in order to improve the efficiency of alkaline pretreatment of sugarcane bagasse (SCB). Response surface methodology (RSM) was used to optimize pretreatment parameters: NaOH concentration (0.1-0.5 M), solid/liquid ratio (S/L, 3-10%) and HC time (15-45 min), in terms of glucan content, lignin removal and enzymatic digestibility. Under an optimal HC condition (0.48 M of NaOH, 4.27% of S/L ratio and 44.48 min), 52.1% of glucan content, 60.4% of lignin removal and 97.2% of enzymatic digestibility were achieved. Moreover, enzymatic hydrolysis of the pretreated SCB resulted in a yield 82% and 30% higher than the untreated and alkaline-treated controls, respectively. HC was found to be a potent and promising approach to pretreat lignocellulosic biomass.

Original languageEnglish
Pages (from-to)609-614
Number of pages6
JournalBioresource Technology
Volume214
DOIs
StatePublished - 1 Aug 2016
Externally publishedYes

Keywords

  • Alkaline pretreatment
  • Enzymatic digestibility
  • Hydrodynamic cavitation
  • Response surface methodology (RSM)
  • Sugarcane bagasse

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