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Production of polyhydroxybutyrate from industrial flue gas by microbial electrosynthesis

Langsdorf, Alexander; Schütz, Julian Philipp; Ulber, Roland; Stöckl, Markus; Holtmann, Dirk 1
1 Institut für Bio- und Lebensmitteltechnik (BLT), Karlsruher Institut für Technologie (KIT)

Abstract:

The aim of this work was to produce the biopolymer polyhydroxybutyrate (PHB) from industrial flue gas as CO$_2$ source and electrolysis originating hydrogen via microbial electrosynthesis. Besides the laboratory experiments, the experiments were carried out under industrial conditions directly on-site in a cogeneration plant. We were able to demonstrate that the use of flue gas as a CO$_2$ source has no detectable negative effect on bacterial growth and PHB production in comparison to a pure gas mixture. In an electrochemical H-cell 333 ± 44 mg L−1 PHB were obtained, which corresponds to a PHB content of 43 ± 3 % of the cell dry weight. By using flue gas for the production of the biopolymer PHB, not only CO$_2$ emissions are reduced, but also possible environmental pollution from non-biodegradable plastics. To the best of our knowledge, this is the first time that the production of PHB from flue gas has been demonstrated using Cupriavidus necator.


Verlagsausgabe §
DOI: 10.5445/IR/1000171008
Veröffentlicht am 04.06.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Bio- und Lebensmitteltechnik (BLT)
KIT-Bibliothek (BIB)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2024
Sprache Englisch
Identifikator ISSN: 2212-9820, 2212-9839
KITopen-ID: 1000171008
Erschienen in Journal of CO2 Utilization
Verlag Elsevier
Band 83
Seiten Art.-Nr.: 102800
Vorab online veröffentlicht am 08.05.2024
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Web of Science
Scopus
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