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C.R.O.P. – Combined Regenerative Organic food Production: Using Trickling Filters for Nitrate Production from Urine

Bornemann, Gerhild and Waßer, Kai and Hemmersbach, Ruth and Anken, Ralf and Hauslage, Jens (2014) C.R.O.P. – Combined Regenerative Organic food Production: Using Trickling Filters for Nitrate Production from Urine. 6th International Workshop AGROSPACE2014. Analogue Testing – the First Step towards Space, 22 - 23 May 2014, Sperlonga, Italy.

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Abstract

The DLR Project C.R.O.P. generally aims to combine the utilization of all kinds of organic wastes with soilless plant cultivation. Within the project scientific work is divided into several research areas that are allotted to different groups. Our group is concerned with the waste management system, in which nutrients should be recycled to the highest possible degree. The core of the system is formed by microbial trickling filters in which organic matter is liquefied if needed, and converted into inorganic compounds. The resulting nutrient solution is intended for fertigation in greenhouse cultures in space and on Earth. In our testing facility at DLR the capability of the filters to convert urine into a nitrate containing solution is characterized. Each filter unit combines 30 l of liquid volume with 6 l of filter volume. Running the filters with diluted synthetic urine in different starting concentrations (7 %, 20 %) to simulate yellow water showed that the process of urea conversion as it occurs in the soil also worked in the filters. Even when nitrogen content far exceeded the concentrations usually found in wastewaters ammonia was turned over quickly and odour nuisance and toxicity were reduced to a minimum. Nitrate production occurred at rates of 45 g per day at a maximum, which corresponds to a urea degradation rate of 22.5 g per day. The use of the resulting solution as fertilizer is currently tested experimentally

Item URL in elib:https://elib.dlr.de/94830/
Document Type:Conference or Workshop Item (Poster)
Title:C.R.O.P. – Combined Regenerative Organic food Production: Using Trickling Filters for Nitrate Production from Urine
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bornemann, GerhildDLR Institute of Aerospace Medicine, Biomedical Research, Cologne, GermanyUNSPECIFIED
Waßer, KaiDLR Institute of Aerospace Medicine, Biomedical Research, Cologne, GermanyUNSPECIFIED
Hemmersbach, RuthDLR Institute of Aerospace Medicine, Biomedical Research, Cologne, GermanyUNSPECIFIED
Anken, RalfDLR Institute of Aerospace Medicine, Biomedical Research, Cologne, GermanyUNSPECIFIED
Hauslage, JensDLR Institute of Aerospace Medicine, Biomedical Research, Cologne, GermanyUNSPECIFIED
Date:22 May 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Life Support Systems, urine recycling, nitrate recycling, trickle filter, fertilizer
Event Title:6th International Workshop AGROSPACE2014. Analogue Testing – the First Step towards Space
Event Location:Sperlonga, Italy
Event Type:international Conference
Event Dates:22 - 23 May 2014
Organizer:Regione Lazio, Federlazio, DLR
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 - Vorhaben Biowissenschaftliche Nutzerunterstützung
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Biomedical Research
Deposited By: Duwe, Helmut
Deposited On:27 Jan 2015 09:24
Last Modified:27 Jan 2015 09:24

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