Fermentation of undetoxified sugarcane bagasse hydrolyzates using a two stage hydrothermal and mechanical refining pretreatment

Zhaoqin Wang, Bruce S. Dien, Kent D. Rausch, M. E. Tumbleson, Vijay Singh

Research output: Contribution to journalArticle

Abstract

In this study, liquid hot water pretreatment was combined with disk milling for pretreatment of sugarcane bagasse. Sugarcane bagasse was pretreated using liquid hot water (LHW) at 140–180 °C for 10 min (20% w/w solids content) and then disk milled. Disk milling improved glucose release 41–177% and ethanol production from glucose/xylose cofermentation by 80% compared to only using LHW pretreatment. The highest ethanol conversion efficiency achieved was 94%, which was observed when bagasse was treated at 180 °C with LHW and disk milled. However, a small amount of residual xylose (3 g/L) was indicative that further improvement could be achieved to increase ethanol production.

Original languageEnglish (US)
Pages (from-to)313-321
Number of pages9
JournalBioresource Technology
Volume261
DOIs
StatePublished - Aug 2018

Keywords

  • Bioethanol
  • Cofermentation
  • Disk milling
  • Hot water pretreatment
  • Sugarcane bagasse

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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