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Combined Regenerative Organic-food Production: An integrated approach to the utilization of yellow water and other organic wastes

Waßer, Kai and Hauslage, Jens and Bornemann, Gerhild and Tonat, Tim and Hemmersbach, Ruth and Anken, Ralf (2013) Combined Regenerative Organic-food Production: An integrated approach to the utilization of yellow water and other organic wastes. ELGRA Biennial Symposium and General Assembly, 11.-14. Sep. 2013, Rom, Italien. (Unpublished)

Full text not available from this repository.

Abstract

Bioregeneration is a key requirement of life support systems for long-term manned space missions. According to this, C.R.O.P. is a concept for the recycling of organic wastes and wastewaters, which combines microbial trickle filters for waste processing with plant cultivation on the basis of the resulting nutrient containing solutions. Besides phosphates and other ions necessary for plant growth, yellow water contains a high proportion of urea, which is a prospective source of nitrogen for plants. To make the contained nitrogen available for plants, it has to be converted into one of its ionic compounds. In the soil, urea is converted into nitrate in a multi-step process involving ammonia as an intermediate. Ammonia can be resorbed by plants but it is responsible for the foul odour of stored urine. The C.R.O.P. trickle filters are filled with porous lava rock particles on the rough surface of which a community of soil bacteria is established. Running the filters with diluted synthetic urine to simulate yellow water showed that the process of urea conversion as it occurs in the soil also works in the filters. Ammonia is turned so quickly into nitrate that odour nuisance and toxicity are reduced to a minimum. The resulting solution can be used for fertilizer production or soil free plant cultivation in a hydroponic system. A C.R.O.P. system combining trickle filters for waste processing with hydroponic plant cultivation facilities can be easily modified for use in space thus providing the bioregenerative compartment of a modular life support system.

Item URL in elib:https://elib.dlr.de/87879/
Document Type:Conference or Workshop Item (Poster)
Title:Combined Regenerative Organic-food Production: An integrated approach to the utilization of yellow water and other organic wastes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Waßer, KaiGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Biomedical Science Support Center, Cologne, GermanyUNSPECIFIED
Hauslage, JensGerman Aerospace Center, Institute of Aerospace Medicine, Cologne, GermanyUNSPECIFIED
Bornemann, GerhildGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Höhe, 51147 Köln, GermanyUNSPECIFIED
Tonat, TimGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Höhe, 51147 Köln, GermanyUNSPECIFIED
Hemmersbach, RuthGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Biomedical Science Support Center, Gravitational Biology, Cologne, GermanyUNSPECIFIED
Anken, RalfGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Biomedical Science Support Center, Cologne, GermanyUNSPECIFIED
Date:2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:bioregeneration, C.R.O.P., organic waste, trickle filters, nitrogen, ammonia,
Event Title:ELGRA Biennial Symposium and General Assembly
Event Location:Rom, Italien
Event Type:international Conference
Event Dates:11.-14. Sep. 2013
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 - Projekt :envihab
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Biomedical Science Support Center
Deposited By: Bromeis, Birgit
Deposited On:04 Feb 2014 15:32
Last Modified:04 Feb 2014 15:32

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