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Comparison of Batch CSTR Leaching and Biodegradation of Autoclaved and Not Autoclaved Human Feces with Regard to Recovery of Major Inorganic Crop Nutrients
Technical Paper
2000-01-2469
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Bioprocessing of human fecal wastes may be an important means for recycling of crop nutrients within a closed Advanced Life Support System. The objectives of this study were to determine the levels of key crop nutrients that can be extracted from human feces that had been autoclave sterilized vs. those that had not. When compared with inedible ALS grown wheat residues, the contribution of feces, which has an ash content 13% to the total potential, recoverable minerals may be small. This paper discusses results from bioreactor runs obtained using continuous stirred tank reactors with an 8 day batch culture of autoclaved or not autoclaved feces. The results suggest that feces should not be autoclaved if mineral recovery is desired. Biodegradation of feces ranged from 27 to 39% in 8 days, with 67 to 79% reduction in soluble total organic carbon (TOC) and concomitant production of carbon dioxide (CO2).
Authors
Citation
Strayer, R., Alazraki, M., and Judkins, J., "Comparison of Batch CSTR Leaching and Biodegradation of Autoclaved and Not Autoclaved Human Feces with Regard to Recovery of Major Inorganic Crop Nutrients," SAE Technical Paper 2000-01-2469, 2000, https://doi.org/10.4271/2000-01-2469.Also In
References
- Finger B.W. Strayer R.F. Development of an intermediate-scale aerobic bioreactor to regenerate nutrients from inedible crop residues SAE Tech. Pap. 941501 1994
- Finger, B.W. Alazraki M.P. Development and Integration of a Breadboard-scale aerobic bioreactor to regenerate nutrients from inedible crop residues SAE Tech. Paper 951498 1995
- Strayer, R.F. Cook K.L. Recycling plant nutrients at NASA's KSC-CELSS Breadboard Project: Biological performance of the breadboard-scale aerobic bioreactor during two runs SAE Tech. Paper 951708 1995
- Strayer, R.F. Finger B.W. Alazraki M.P. Stability and reliability of biological reactors SAE Tech. Paper 972549 1997
- Wydeven, T. Golub M.A. Generation rates and chemical compositions of waste streams in a typical crewed space habitat NASA Technical Memorandum 102799 1990
- Strayer, R.F. Alazraki, M.P. Yorio N. Finger B.W. Bioprocessed wheat residues to recycle plant nutrients to the JSC Variable Pressure Growth Chamber during the L/MLSTP phase III test SAE Tech. Paper 981706 1998
- Garland, J.L. Mackowiak C.L. Sager J.C. Hydroponic crop production using recycling nutrients from inedible crop residues SAE Tech. Paper 932173 1993
- Mackowiak, C.L. Garland, J.L. Strayer, R.F. Finger B.W. Wheeler R.M. Comparison of aerobically-treated and untreated crop residue as a source of recycled nutrients in a recirculating hydroponic system Adv. Space Res. 18 281 287 1996
- Strayer, R.F. Finger B.W. Alazraki M.P. Effects of bioreactor retention time on aerobic microbial decomposition of CELSS crop residues Adv. Space Res. 20 2023 2028 1997