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The influence of nitrogen concentration and precipitation on fertilizer production from urine using a trickling filter

Bornemann, Gerhild und Waßer, Kai und Hauslage, Jens (2018) The influence of nitrogen concentration and precipitation on fertilizer production from urine using a trickling filter. Life Sciences in Space Research, 18, Seiten 12-20. Elsevier. doi: 10.1016/j.lssr.2018.04.003. ISSN 2214-5524.

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Offizielle URL: https://doi.org/10.1016/j.lssr.2018.04.003

Kurzfassung

Planetary habitation requires technology to maintain natural microbial processes, which make nutrients from biowaste available for plant cultivation. This study describes a 646 day experiment, in which trickling filters were monitored for their ability to mineralize nitrogen when loaded with artificial urine solutions of different concentrations (40, 60, 80 and 100% v/v). Former studies have indicated that increasing urine concentrations slow nitrogen conversion rates and induce growing instability. In the current experiment, nitrogen conversion rates, measured as nitrate production/day, did not differ between concentration levels and increasing instability was not observed. Instead, the buffering capacity of the mussel shells added as buffer system (∼75% calcium carbonate) increased with increasing concentrations of synthetic urine possibly due to the higher phosphate content. The intensified precipitation of calcium phosphates seems to promote carbonate dissolution leading to improved buffering. For space applications, the precipitation of calcium phosphates is not desirable as for the phosphate to be available to the plants the precipitate must be treated with hazardous substances. With regard to terrestrial agriculture the process-integrated phosphate precipitation is a possibility to separate the macronutrients nitrogen and phosphate without addition of other chemicals. Thus, the described process offers a simple and cost-effective approach to fertilizer production from biogenic residues like slurry.

elib-URL des Eintrags:https://elib.dlr.de/120009/
Dokumentart:Zeitschriftenbeitrag
Titel:The influence of nitrogen concentration and precipitation on fertilizer production from urine using a trickling filter
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Bornemann, Gerhildgerman aerospace centre (dlr), institute of aerospace medicine, gravitational biology, cologne, germanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Waßer, Kaigerman aerospace centre (dlr), institute of aerospace medicine, gravitational biology, cologne, germanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hauslage, Jensgerman aerospace centre (dlr), institute of aerospace medicine, gravitational biology, cologne, germanyhttps://orcid.org/0000-0003-2184-7000NICHT SPEZIFIZIERT
Datum:2 Mai 2018
Erschienen in:Life Sciences in Space Research
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:18
DOI:10.1016/j.lssr.2018.04.003
Seitenbereich:Seiten 12-20
Verlag:Elsevier
ISSN:2214-5524
Status:veröffentlicht
Stichwörter:Life support, Urine, Waste management, Biofilter, Nitrification
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Forschung unter Weltraumbedingungen
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R FR - Forschung unter Weltraumbedingungen
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt :envihab (alt), R - Projekt eu:cropis (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Gravitationsbiologie
Hinterlegt von: Duwe, Helmut
Hinterlegt am:03 Jul 2018 13:49
Letzte Änderung:22 Mai 2024 08:30

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