Greifswald 2024 – scientific programme
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P: Fachverband Plasmaphysik
P 6: Poster I
P 6.5: Poster
Monday, February 26, 2024, 16:30–18:30, ELP 6: Foyer
Overcoming He: Towards a more sustainable plasma-driven biocatalysis — •Steffen Schüttler1, Tim Dirks2, Sabrina Klopsch2, Jannis Kaufmann1, Niklas Eichstaedt1, Julia E. Bandow2, and Judith Golda1 — 1Plasma Interface Physics, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany — 2Applied Microbiology, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
In plasma-driven biocatalysis, an RF atmospheric pressure plasma jet operated with humid He is used to generate and deliver H2O2 into a liquid in which biological enzymes act as catalysts [1]. Promising total turnover numbers were found, showing that this approach is competitive with other approaches presented in literature. However, 99% of the operating costs of the process are due to the use of He as feed gas. Therefore, in order to achieve a more sustainable approach, Ar was used as a feed gas because it can be extracted from air and is less expensive than He. A less stable plasma operation and a lower H2O2 production were found, which counterbalances the lower cost of Ar compared to He. To obtain a more stable plasma with Ar, a kHz plasma jet was also tested, which could also be used well in biocatalysis. N2 or air as feed gas are the most cost-effective gases. Therefore, the operation of the kHz plasma jet in humid N2 has also been tested for plasma-assisted biocatalysis, enabling a wider range of applications.
This work is supported by the DFG within CRC1316 (Subproject B11, project number 327886311).
[1] A. Yayci et al., ChemCatChem 12, 5893-5897 (2020)
Keywords: Atmospheric pressure plasma jet; H2O2 production; plasma-driven biocatalysis; Sustainability