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Sterilization of Spacecraft Equipment using a Plasma Afterglow Circulation Apparatus

Müller, Meike and Thomas, Hubertus M. and Zimmermann, Julia L. and Morfill, Gregor E. and Rettberg, Petra (2018) Sterilization of Spacecraft Equipment using a Plasma Afterglow Circulation Apparatus. 82. Jahrestagung der DPG und DPG-Frühjahrstagung, Erlangen. (Unpublished)

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Abstract

A new afterglow circulation apparatus using cold atmospheric Plasma (CAP) is presented as a useful alternative sterilization method for spacecraft equipment. The developed setup uses the plasma afterglow generated by surface micro-discharge (SMD) technology and allows the control of gasflow, humidity and treatment volume. With the new setup we evaluate appropriate CAP conditions for a maximal sporicidal effect and examine the inactivation efciency by increasing the treatment volume. The sporicidal effect of the apparatus is tested with bacterial endospores Bacillus atrophaeus. A Fourier Transformation Infrared Spectrometer (FTIR) is used to analyse the detailed composition of the afterglow plasma. The study provides an insight into the plasma chemistry and the influence of the prevalent humidity involved in the inactivation of microorganisms. These Investigations are necessary to test the scalability and application for sterilization of spacecraft equipment. We will give an overview on the status of the plasma decontamination project and present the frst results of the plasma-gascirculation apparatus funded by the Bavarian Ministry of Economics.

Item URL in elib:https://elib.dlr.de/123552/
Document Type:Conference or Workshop Item (Poster)
Title:Sterilization of Spacecraft Equipment using a Plasma Afterglow Circulation Apparatus
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Müller, MeikeMeike.Mueller (at) dlr.deUNSPECIFIED
Thomas, Hubertus M.Hubertus.Thomas (at) dlr.dehttps://orcid.org/0000-0001-8358-2023
Zimmermann, Julia L.terraplasma GmbH, Lichtenbergstraße, 85748 Garching bei München, GermanyUNSPECIFIED
Morfill, Gregor E.terraplasma GmbH, Lichtenbergstraße, 85748 Garching bei München, GermanyUNSPECIFIED
Rettberg, PetraPetra.Rettberg (at) dlr.dehttps://orcid.org/0000-0003-4439-2395
Date:March 2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:Cold atmospheric plasma, Sterilization, Spores, Planetary Protection
Event Title:82. Jahrestagung der DPG und DPG-Frühjahrstagung
Event Location:Erlangen
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Komplexe Plasmen / Laboratory research
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Müller, Meike
Deposited On:22 Nov 2018 15:14
Last Modified:28 Mar 2019 09:02

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