Abstract
The RIM-NUT® process is based on ion-exchange precipitation operations for the abatement of the eutrophication potential present in biologically oxidised municipal, zootechnical and industrial wastewaters. A natural zeolite (clinoptilolite) and a commercial macroporous strong-base anion exchanger selectively remove nutrient species (i.e., NH4 +; H2PO4 =/HPO4), which are quantitatively precipitated and recovered in the form of a premium-quality, slow-release fertiliser (MgNH4PO46H2O) from the exchangers spent regeneration eluates. Demonstration campaigns carried out in Italy and the United States on a 240 m3/d mobile plant proved the technical feasibility of the process whose economical proficiency must still be assessed.
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Liberti, L., Boghetich, G., Lopez, A., Petruzzelli, D. (1999). Application of Microporous Materials for the Recovery of Nutrients From Wastewaters. In: Misaelides, P., Macášek, F., Pinnavaia, T.J., Colella, C. (eds) Natural Microporous Materials in Environmental Technology. NATO Science Series, vol 362. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4499-5_17
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DOI: https://doi.org/10.1007/978-94-011-4499-5_17
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