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Mineral Recovery Systems for Humans in a CELSS
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English
Abstract
The recovery of important minerals, salt (NaCI) and potassium (K), in a closed system, namely CELSS is discussed. NaCI is needed for humans, but is potentially harmful to plants. Salt is recovered after wet oxidation of urine. Since Na and K have similar chemical and physical properties, their recovery or separation may require sophisticated methods. Na, CI and K ions are separated from other ions by electrodialysis with univalent selective ion-exchange membranes and then NaCI is obtained separately by a crystalization process. Preliminary experiment on crystalization of NaCI-KCl mixed solutions showed a good separation result.
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Authors
Citation
Kurokawa, H., Sawa, T., Ashida, A., Hamano, N. et al., "Mineral Recovery Systems for Humans in a CELSS," SAE Technical Paper 921237, 1992, https://doi.org/10.4271/921237.Also In
References
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- Ballou E. Spitze L.A. Wang F.W. Wydeven T. Johnson C.C. Ion-Exchange Chromatography Separation Applied to Mineral Recycle in Closed Sysems ASME paper 81-ENAs-21 1981
- Yamashita M. Ohya H. Nitta K. Yatazawa M. Sodium and Potassium ecycle in Closed Ecosystem-Space Agriculture Journal of the Japan Society for Aeronautical and Space Sciences 33 376 288 296 1985
- Ashida A. Kurokawa H. Sawa T. Mineral Recovery Systems in CELSS International Conference on Life Suppport and Biospherics Huntsville Feb. 18-20 1992