Impact of bioaugmentation on biochemical methane potential for wheat straw with addition of Clostridium cellulolyticum.

Research output: Contribution to journalArticle

Abstract

Hydrolysis is usually the rate-limited step for methane production from lignocellulosic substrate. Two bioaugmentation strategies, using the cellulolytic anaerobic bacteria Clostridium cellulolyticum, were adopted to enhance the hydrolysis of wheat straw with the purpose of improving the biochemical methane potential (BMP). Namely, the 24-h-incubated seed (C24S) with cellobiose as carbon source and the 60-h-incubated seed (WS60S) with wheat straw as carbon source were respectively used as the bioaugmentation agents. As a result, the BMPs were respectively 342.5 and 326.3mlg(-1) VS of wheat straw, with an increase of 13.0% and 7.6% comparing to the no-bioaugmentation BMP of 303.3mlg(-1) VS. The result indicates that the anaerobic digestion efficiency can be improved by bioaugmentation, which therefore may be a promising method for improving methane production from lignocellulosic substrate.

Details

Authors
  • Xiaowei Peng
  • Rosa Aragao
  • Nges Ivo Achu
  • Jing Liu
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Industrial Biotechnology
Original languageEnglish
Pages (from-to)567-571
JournalBioresource Technology
Volume152
Publication statusPublished - 2014
Publication categoryResearch
Peer-reviewedYes