<div class="csl-bib-body">
<div class="csl-entry">Steiner, L., Benedikt, F., Horvath, J. A., Reichebner, J., Pflügl, S., & Müller, S. (2024, June 24). <i>Production of acetate via syngas fermentation from dual fluidized bed steam gasification</i> [Conference Presentation]. 32nd European Biomass Conference & Exhibition (EUBCE), Marseille, France.</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/209427
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dc.description.abstract
Biomass gasification using dual fluidized bed (DFB) steam gasification allows the production of a
high-quality product gas that can be used for a variety of synthesis processes. During the last years extensive research has been conducted on the 100 kW pilot plant of TU Wien and the main application areas of methanation, Fischer-Tropsch-processes and hydrogen production. Since the production of bio-based chemicals is gaining more and more importance new application fields are researched.
The concept of this paper consists of combining DFB steam gasification, gas cleaning and syngas
fermentation in order to directly produce acetate from softwood pellets. For syngas fermentation the strictly anaerobic acetogenic bacteria T. kivui were used. T. kivui is able grow on three of the four main gas components of the DFB product gas, namely on H2, CO2 and CO. Only CH4 acts as an inert gas in
the syngas fermentation reactor. Various pre-tests had to be carried out before finally the three process
steps could be connected. Pre-tests were conducted with bottled syngas collected after the final cleaning step. After successful adaptation of T. kivui to the syngas small scale experiments were carried out to gain knowledge about operating parameters, yields and potential problems of the process.
For a total of 25 hours purified DFB syngas was fed to the fermentation reactor. The DFB product gas
was cleaned in a hot gas filter, a RME scrubber, two activated carbon beds and a ZnO-bed. Measurements at the beginning and the end of the experiment confirm that contaminations from DFB steam gasification remained constant over time. Since syngas was produced directly the bacteria had to the deal with fluctuations in the gas composition and short periods with lack of gas supply. Neither of them affected the growth of the bacteria negatively which makes the combination of the three process steps a very robust overall concept.
Additionally, the impact of impurities originating from the real DFB steam gasification process proved
not be harmful to T. kivui. This was demonstrated by contaminating the environment of T. kivui with water condensed in the RME scrubber. Since this water contains ammonia, H2S, water-soluble organic
compounds and particles certain gas cleaning steps may be superfluous for syngas fermentation making
the overall concept simpler and more economic.
en
dc.description.sponsorship
Christian Doppler Forschungsgesells
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dc.language.iso
en
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dc.subject
Biomass gasification
en
dc.subject
Dual fluidized bed steam gasification
en
dc.subject
Syngas fermentation
en
dc.subject
Thermoanaerobacter kivui
en
dc.title
Production of acetate via syngas fermentation from dual fluidized bed steam gasification
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
CAZy
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dc.type.category
Conference Presentation
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tuw.project.title
Christian Doppler Labor für optimierte Expression von Kohlenhydrat-aktiven Enzymen
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tuw.researchTopic.id
M6
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tuw.researchTopic.id
E6
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tuw.researchTopic.id
E5
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tuw.researchTopic.name
Biological and Bioactive Materials
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tuw.researchTopic.name
Sustainable Production and Technologies
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tuw.researchTopic.name
Efficient Utilisation of Material Resources
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tuw.researchTopic.value
33
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tuw.researchTopic.value
34
-
tuw.researchTopic.value
33
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tuw.publication.orgunit
E166-07-2 - Forschungsgruppe Industrieanlagendesign und Anwendung digitaler Methoden
