Approaches to nitrogen fixation and recycling in closed life-support systems
N2 fixation is essential to the sustainability and operation of nitrogen systems but is energetically expensive. We developed a model and used sensitivity analysis to identify the impact of aerobic and anaerobic waste digestion, crop harvest index, rates of recovery of recalcitrant N, and the rate o...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-08-01
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| Series: | Frontiers in Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fspas.2023.1176576/full |
| _version_ | 1797755534823129088 |
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| author | Tyler Wallentine David Merkley Noah J. Langenfeld Bruce Bugbee Lance C. Seefeldt |
| author_facet | Tyler Wallentine David Merkley Noah J. Langenfeld Bruce Bugbee Lance C. Seefeldt |
| author_sort | Tyler Wallentine |
| collection | DOAJ |
| description | N2 fixation is essential to the sustainability and operation of nitrogen systems but is energetically expensive. We developed a model and used sensitivity analysis to identify the impact of aerobic and anaerobic waste digestion, crop harvest index, rates of recovery of recalcitrant N, and the rate of N2 fixation in a system combining nitrogen fixation and recycling. The model indicates that the rate of N2 fixation, loss from reactors, fertilization efficiency, and crop harvest index have the largest impact on maintaining bioavailable N. N recoveries from aerobic and anaerobic digestion, as well as direct-to-soil fertilization, are not well characterized, but the case studies using this model indicate that their efficiencies are critical to N recovery. The findings of this model and its presented case studies can be used as a guide in the design of closed-loop habitats both on Earth and in space. These results reveal a clear need for continued research in the areas of N-efficient digestion, fertilization, and fixation. |
| first_indexed | 2024-03-12T17:47:39Z |
| format | Article |
| id | doaj.art-8a9f469f953f435cb67145f3959679bd |
| institution | Directory Open Access Journal |
| issn | 2296-987X |
| language | English |
| last_indexed | 2024-03-12T17:47:39Z |
| publishDate | 2023-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj.art-8a9f469f953f435cb67145f3959679bd2023-08-03T12:21:43ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2023-08-011010.3389/fspas.2023.11765761176576Approaches to nitrogen fixation and recycling in closed life-support systemsTyler Wallentine0David Merkley1Noah J. Langenfeld2Bruce Bugbee3Lance C. Seefeldt4Department of Chemistry and Biochemistry, Utah State University, Logan, UT, United StatesDepartment of Chemistry and Biochemistry, Utah State University, Logan, UT, United StatesCrop Physiology Laboratory, Utah State University, Logan, UT, United StatesCrop Physiology Laboratory, Utah State University, Logan, UT, United StatesDepartment of Chemistry and Biochemistry, Utah State University, Logan, UT, United StatesN2 fixation is essential to the sustainability and operation of nitrogen systems but is energetically expensive. We developed a model and used sensitivity analysis to identify the impact of aerobic and anaerobic waste digestion, crop harvest index, rates of recovery of recalcitrant N, and the rate of N2 fixation in a system combining nitrogen fixation and recycling. The model indicates that the rate of N2 fixation, loss from reactors, fertilization efficiency, and crop harvest index have the largest impact on maintaining bioavailable N. N recoveries from aerobic and anaerobic digestion, as well as direct-to-soil fertilization, are not well characterized, but the case studies using this model indicate that their efficiencies are critical to N recovery. The findings of this model and its presented case studies can be used as a guide in the design of closed-loop habitats both on Earth and in space. These results reveal a clear need for continued research in the areas of N-efficient digestion, fertilization, and fixation.https://www.frontiersin.org/articles/10.3389/fspas.2023.1176576/fulllife support systemsnitrogen managementbiological N2 fixationsustainabiltywaste digestioncrop harvest index |
| spellingShingle | Tyler Wallentine David Merkley Noah J. Langenfeld Bruce Bugbee Lance C. Seefeldt Approaches to nitrogen fixation and recycling in closed life-support systems Frontiers in Astronomy and Space Sciences life support systems nitrogen management biological N2 fixation sustainabilty waste digestion crop harvest index |
| title | Approaches to nitrogen fixation and recycling in closed life-support systems |
| title_full | Approaches to nitrogen fixation and recycling in closed life-support systems |
| title_fullStr | Approaches to nitrogen fixation and recycling in closed life-support systems |
| title_full_unstemmed | Approaches to nitrogen fixation and recycling in closed life-support systems |
| title_short | Approaches to nitrogen fixation and recycling in closed life-support systems |
| title_sort | approaches to nitrogen fixation and recycling in closed life support systems |
| topic | life support systems nitrogen management biological N2 fixation sustainabilty waste digestion crop harvest index |
| url | https://www.frontiersin.org/articles/10.3389/fspas.2023.1176576/full |
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