Exploitation of the extremely thermophilic Caldicellulosiruptor saccharolyticus in hydrogen and biogas production from biomasses

Zsófia Herbel, Gábor Rákhely, Zoltán Bagi, Galina Ivanova, Norbert Ács, Etelka Kovács, Kornel L. Kovács

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Caldicellulosiruptor saccharolyticus has attracted considerable attention by virtue of its ability to degrade various polysaccharide, oligosaccharide and monosaccharide substrates at temperatures above 70 °C, while its ability to convert various sugars to hydrogen has led to C. saccharolyticus being selected for the fermentative production of hydrogen. In this study, the utilization of a pure cellulosic substrate and mixed biomasses of plant origin was investigated. Cellulase biosynthesis can be triggered by growing cells on various monomeric carbohydrates, e.g. glucose or fructose. Pretreatment with cellulase-producing Bacilli improves the hydrogen yield, indicating that C. saccharolyticus alone can only partially decompose cellulosic substrates. The hydrogen-producing activity of C. saccharolyticus can be exploited in biogas technologies. With appropriate induction of the polymer-degrading enzymes, C. saccharolyticus may become a prime candidate with which to improve the yield and efficacy of practical hydrogen- and biogas-producing processes.

Original languageEnglish
Pages (from-to)1017-1024
Number of pages8
JournalEnvironmental Technology
Volume31
Issue number8-9
DOIs
Publication statusPublished - Jul 2010

Keywords

  • Caldicellulosiruptor saccharolyticus
  • biogas
  • biomass
  • cellulase
  • energy plants
  • hydrogen

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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