Pretreatment combining ultrasound and sodium percarbonate under mild conditions for efficient degradation of corn stover

Kazunori Nakashima, Yuuki Ebi, Masaki Kubo, Naomi Shibasaki-Kitakawa, Toshikuni Yonemoto

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Ultrasound (US) can be used to disrupt microcrystalline cellulose to give nanofibers via ultrasonic cavitation. Sodium percarbonate (SP), consisting of sodium carbonate and hydrogen peroxide, generates highly reactive radicals, which cause oxidative delignification. Here, we describe a novel pretreatment technique using a combination of US and SP (US-SP) for the efficient saccharification of cellulose and hemicellulose in lignocellulosic corn stover. Although US-SP pretreatment was conducted under mild condition (i.e., at room temperature and atmospheric pressure), the pretreatment greatly increased lignin removal and cellulose digestibility. We also determined the optimum US-SP treatment conditions, such as ultrasonic power output, pretreatment time, pretreatment temperature, and SP concentration for an efficient cellulose saccharification. Moreover, xylose could be effectively recovered from US-SP pretreated biomass without the formation of microbial inhibitor furfural.

Original languageEnglish
Pages (from-to)455-460
Number of pages6
JournalUltrasonics Sonochemistry
Volume29
DOIs
Publication statusPublished - 2016 Mar 1

Keywords

  • Cellulose
  • Enzymatic saccharification
  • Lignocellulose
  • Pretreatment
  • Ultrasound

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Chemistry
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry

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