Increasing biohydrogen production with the use of a co-culture inside a microbial electrolysis cell

Autor(en)
Benedikt Hasibar, Ipek Ergal, Susanne Moser, Guenther Bochmann, Simon K-M R. Rittmann, Werner Fuchs
Abstrakt

Biohydrogen (H-2) is considered to be a significant contributor to sustainable economy. However, due to current yields and production rates, large-scale technical implementation of biological H-2 production is still a long way off. In this study, two highly productive H-2 producers, Enterobacter aerogenes and Clostridium acetobutylicum, were synergistically combined in an artificial microbial consortium (co-culture) for H-2 production. Moreover, this co-culture was utilized in a bioelectrochemical system referred to as microbial electrolysis cell, where a small voltage (0.8 V) is applied to enforce H-2 production. The experiments were conducted in closed batch mode using cellobiose as carbon source. Each of the applied approaches (co-culture and applied voltage) led to an increase in H-2 evolution rate (HER), resulting in a maximum HER of 0.93 mmol L-1 h(-1) for the co-culture at an applied voltage of 0.8 V. With the further scale-up and optimization of the examined system parameters, sustainable H-2 production for large-scale applications might be feasible within the near future.

Organisation(en)
Department für Funktionelle und Evolutionäre Ökologie, Institut für Philosophie
Externe Organisation(en)
Universität für Bodenkultur Wien
Journal
Biochemical engineering journal: an international journal of research and development
Band
164
Anzahl der Seiten
6
ISSN
1369-703X
DOI
https://doi.org/10.1016/j.bej.2020.107802
Publikationsdatum
12-2020
Peer-reviewed
Ja
ÖFOS 2012
209005 Fermentation
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/increasing-biohydrogen-production-with-the-use-of-a-coculture-inside-a-microbial-electrolysis-cell(2a2a5644-6e27-4dd2-b9eb-362fcc98f6e9).html