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 journalArticlepeer-review

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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