Phosphorus Removal from Eutrophic Waters with an Aluminium Hybrid Nanocomposite |
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Authors: | M Oliveira A V Machado R Nogueira |
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Institution: | 1. IPC??Institute of Polymers and Composites/I3N, Department of Polymers Engineering, University of Minho, Campus de Azur??m, 4800-058, Guimar?es, Portugal 2. IBB??Institute for Biotechnology and Bioengineering, Center of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
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Abstract: | An excess of phosphorus (P) is the most common cause of eutrophication of freshwater bodies. Thus, it is imperative to reduce the concentration of P to prevent harmful algal blooms. Moreover, recovery of P has been gaining importance because its natural source will be exhausted in the near future. Therefore, the present work investigated the removal and recovery of phosphate from water using a newly developed hybrid nanocomposite containing aluminium nanoparticles (HPN). The HPN-Pr removes 0.80?±?0.01?mg?P/g in a pH interval between 2.0 and 6.5. The adsorption mechanism was described by a Freundlich adsorption model. The material presented good selectivity for phosphate and can be regenerated using an HCl dilute solution. The factors that contribute most to the attractiveness of HPN-Pr as a phosphate sorbent are its moderate removal capacity, feasible production at industrial scale, reuse after regeneration and recovery of phosphate. |
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