Enhancement of biogas production by addition of hemicellulolytic bacteria immobilised on activated zeolite

Stefan Weiß, Michael Tauber, Walter Somitsch, Remo Meincke, Henry Müller, Gabriele Berg, Georg Gübitz

Research output: Contribution to journalArticle

Abstract

Biogas from agricultural biomass and residues is a valuable source of renewable energy. However, recalcitrant plant cell structures represent a barrier in the fermentative biodegradation process in single- and two-stage reactors. Therefore, approaches concerning a more efficient de-polymerisation of cellulose and hemicellulose to monomeric sugars are required amongst others in order to optimise the fermentation efficiency and to increase methane yields. Here we show a new strategy for the enhancement of biogas production from hemicellulose-rich substrates. Hemicellulolytic populations from a common biogas fermenter consortium were successively enriched in batch-cultures using a synthetic medium containing xylan powder as single carbon source under anaerobic mesophilic conditions. Enriched hemicellulolytic bacteria were immobilised on trace metal activated zeolite to ensure a stable storage and …
Original languageEnglish
Pages (from-to)1970-1980
JournalWater Research
Volume44
Issue number6
DOIs
Publication statusPublished - 2010

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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