Non-axenic microalgae cultivation in space – Challenges for the membrane µgPBR of the ISS experiment PBR@LSR

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dc.creatorHelisch, Harald
dc.creatorBelz, Stefan
dc.creatorKeppler, Jochen
dc.creatorDetrell, Gisela
dc.creatorHenn, Norbert
dc.creatorFasoulas, Stefanos
dc.creatorEwald, Reinhold
dc.creatorAngerer, Oliver
dc.date.accessioned2018-07-07T16:46:21Z
dc.date.available2018-07-07T16:46:21Z
dc.date.issued2018-07-08
dc.descriptionHarald Helisch, Institute of Space Systems, University Stuttgart
dc.descriptionStefan Belz, Institute of Space Systems, University Stuttgart
dc.descriptionJochen Keppler, Institute of Space Systems, University Stuttgart
dc.descriptionGisela Detrell, Institute of Space Systems, University Stuttgart
dc.descriptionNorbert Henn, Space Exploration Advice Henn
dc.descriptionStefanos Fasoulas, Institute of Space Systems, University Stuttgart
dc.descriptionReinhold Ewald, Institute of Space Systems, University Stuttgart
dc.descriptionOliver Angerer, German Space Administration (DLR)
dc.descriptionICES500: Life Science/Life Support Research Technologies
dc.descriptionThe 48th International Conference on Environmental Systems was held in Albuquerque, New Mexico, USA on 08 July 2018 through 12 July 2018.
dc.description.abstractThe spaceflight experiment PBR@LSR (Photobioreactor at the Life Support Rack) shall demonstrate for the first time the technology and performance of a hybrid life support system – a combination of physico-chemical and biotechnological components – under real space conditions during an operation period of 180 days. To be launched to the International Space Station (ISS) in 2018, PBR@LSR combines the carbon dioxide (CO2) concentrator of ESA’s Life Support Rack (LSR) with an advanced microalgae photobioreactor (PBR). Accommodated in the Destiny module, LSR will concentrate CO2 from the cabin atmosphere. A dedicated interface allows the utilization of the highly concentrated surplus CO2 for the cultivation of the green microalgae species Chlorella vulgaris. Current research at the University of Stuttgart focuses on the fundamental investigation and optimization of non-axenic cultivation processes in µg capable membrane PBRs. This includes the characterization of influences of accompanying bacteria on the non-axenic microalgae culture stability within the PBR suspension loop, photosynthetic capacity as well as overall biomass composition. This paper discusses in general possible influences of emerging bacteria-induced biofilm formation and cell clustering due to non-axenic processing on the long term functionality of µg adapted PBR systems, e.g. PBR@LSR.en_US
dc.identifier.otherICES_2018_186
dc.identifier.urihttp://hdl.handle.net/2346/74157
dc.language.isoengen_US
dc.publisher48th International Conference on Environmental Systemsen_US
dc.subjectPBR@LSR
dc.subjectISS experiment
dc.subjectmicroalgae
dc.subjectChlorella vulgaris
dc.subjectlong-term cultivation
dc.subjectbiofilm
dc.titleNon-axenic microalgae cultivation in space – Challenges for the membrane µgPBR of the ISS experiment PBR@LSRen_US
dc.typePresentationen_US

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