Biogas production: evaluation of the influence of K2FeO4 pretreatment of maple leaves (Acer platanoides) on microbial consortia composition

Matej Planý, Marianna Czolderová, Lucia Kraková, Andrea Puškárová, Mária Bučková, Katarína Šoltys, Jaroslav Budiš, Tomáš Szemes, Tomáš Mackulak, Jer Horng Wu, Domenico Pangallo

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The potential of K2FeO4 as a pretreatment agent of a lignocellulosic material was examined on leaves of Acer platanodides as the sole substrate for biogas production by anaerobic digestion carried out through modelling laboratory-scaled semi-continuous reactors differing in loading rates and substrate (pretreated and untreated leaves). The quality of bioagas produced by K2FeO4-pretreated leaves was significantly better in terms of higher methane content and lower content of H2S. K2FeO4 had no crucial influence on growth inhibition of biogas-producing bacteria, which were analysed by comprehensive culture-independent methods utilising high-throughput sequencing of specific genes [bacterial and archaeal 16S rRNA, formyltetrahydrofolate synthetase gene (fhs), methyl-coenzyme M reductase α subunit gene (mcrA) and fungal internal transcribed spacers (ITS)]. The higher amount of CH4 in biogas utilising pretreated leaves as substrate could be caused by a shift to acetoclastic methanogenesis pathway, which was indicated by the higher amount of homoacetogenic bacteria and acetotrophic methanogens detected in those reactors.

Original languageEnglish
Pages (from-to)1151-1163
Number of pages13
JournalBioprocess and biosystems engineering
Volume42
Issue number7
DOIs
Publication statusPublished - 2019 Jul 12

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering

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