Pompa, A. and Molina, S. and Lejarazu-Larrañaga, A. and Landaburu, J. and García-Calvo, E. (2022) Validation of Recycled Nanofiltration and Anion-Exchange Membranes for the Treatment of Urban Wastewater for Crop Irrigation. Membranes, 12 (8). p. 746. ISSN 2077-0375
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Abstract
One of the alternative sources to tackle the problem of water shortage is the use of reclaimed water from wastewater treatment plants for irrigation purposes. However, when the wastewater has a high conductivity value, it becomes unusable for crop irrigation and needs a more specific treatment. In this work, recycled nanofiltration (rNF) membranes and anion-exchange membranes (rAEMs)obtained from end-of-life RO membranes were validated to evaluate their application capability in saline wastewater treatment. The use of recycled membranes may represent an advantage due to their lower cost and reduced environmental impact associated with their production, which integrates membrane-based technology into a circular economy model. Both recycled membranes were tested in crossflow filtration and electrodialysis (ED) systems. The results of the rNF membrane showed a high selective rejection of divalent ions (SO42−(>96%) and Ca2+and Mg2+(>93%)). In the case of theED process, the comparison between rAEMs and commercial membranes showed an appropriate demineralization rate without compromising the power consumption. Finally, the quality of both system effluents was suitable for irrigation, which was compared to the WHO guideline and validated by the 7-week lettuce crop study.
| Item Type: | Article |
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering T Technology > TS Manufactures |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Anamary Pompa Pernía |
| Date Deposited: | 01 Sep 2022 14:49 |
| Last Modified: | 01 Sep 2022 14:49 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/1397 |
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