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Mineral Recovery System in a CEEF (2)
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Abstract
A unique recovery system for NaCI (salt) from urine, which consists of electrodialysis (ED) and crystallization processes is proposed. The possibility of the mineral recovery included in urine is shown in a previous report. To improve the purity of the produced salt, pH control is needed as a pretreatment. By controlling pH of the feed solution to about 10, multivalent ions such as Ca2+ and Mg2+ are crystallized as phosphate solids which can be separated by filtration. As well as raising the NaCI purity, this controls scaling b y multivalent ions.
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Funabashi, K., Kurokawa, H., Yoshioka, C., Sugawara, S. et al., "Mineral Recovery System in a CEEF (2)," SAE Technical Paper 951581, 1995, https://doi.org/10.4271/951581.Also In
References
- Kurokawa, H. Funabashi K. Sugawara S. Abe R. Ashida A. Nitta K. SAE Tech. Paper 941499 1994
- Ballou, E. Spitze L.A. Wang F.W. Wydeven T. Johnson C.C. ASME paper 81-ENAs-21 1981
- Ashida, A. Kurokawa H. Sawa T. Inter. Conf. on Life Support and Biospherics Huntsville Feb. 18-20 1992