Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal
Groundwater with high nitrate concentrations requires treatment before potable use. Conventional treatment methods such as nanofiltration and reverse osmosis can be used for desalination of most solutes. In contrast, a monovalent selective membrane capacitive deionization (mMCDI) can be used for sel...
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| Language: | English |
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Elsevier
2025-06-01
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| Series: | Water Resources and Industry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212371725000125 |
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| author | Hanna Rosentreter Maja Moch David Schödel Michael Jeske Tim Oddoy Jochen Meier-Haack Amit N. Shocron André Lerch |
| author_facet | Hanna Rosentreter Maja Moch David Schödel Michael Jeske Tim Oddoy Jochen Meier-Haack Amit N. Shocron André Lerch |
| author_sort | Hanna Rosentreter |
| collection | DOAJ |
| description | Groundwater with high nitrate concentrations requires treatment before potable use. Conventional treatment methods such as nanofiltration and reverse osmosis can be used for desalination of most solutes. In contrast, a monovalent selective membrane capacitive deionization (mMCDI) can be used for selective nitrate removal. We use a nanofiltration membrane and anion exchange membranes with an additional neutral layer (AEM-Neutral) or a polyamide layer (AEM-PA) for selective nitrate removal with mMCDI by using a solution of mixed monovalent and polyvalent ions. Monovalent ion selectivity in short-term experiments is up to 17.3 with a nanofiltration membrane, up to 1.7 for AEM-Neutral and up to 5.2 for AEM-PA, whereby the specific energy consumption and water recovery depends on cell structure, applied electric voltage, flow rate and desorption time. Selective nitrate removal with AEM-PA or AEM-Neutral at 0.8 V demonstrated a specific energy consumption of 2 Wh g−1 removed nitrate, lower than pressure-driven membrane processes. |
| format | Article |
| id | doaj-art-58d33cdc988b4ebea6da2f42879d0b09 |
| institution | OA Journals |
| issn | 2212-3717 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Resources and Industry |
| spelling | doaj-art-58d33cdc988b4ebea6da2f42879d0b092025-08-20T02:34:44ZengElsevierWater Resources and Industry2212-37172025-06-013310028810.1016/j.wri.2025.100288Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removalHanna Rosentreter0Maja Moch1David Schödel2Michael Jeske3Tim Oddoy4Jochen Meier-Haack5Amit N. Shocron6André Lerch7TUD Dresden University of Technology, Faculty of Environmental Science, Institute of Urban and Industrial Water Management, Process Engineering in Hydro Systems, 01062, Dresden, Germany; Corresponding author.TUD Dresden University of Technology, Faculty of Environmental Science, Institute of Urban and Industrial Water Management, Process Engineering in Hydro Systems, 01062, Dresden, GermanyTUD Dresden University of Technology, Faculty of Environmental Science, Institute of Urban and Industrial Water Management, Process Engineering in Hydro Systems, 01062, Dresden, GermanyFUMATECH BWT GmbH, 74321, Bietigheim-Bissingen, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., 01069, Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., 01069, Dresden, GermanyDepartment of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06520-8286, USATUD Dresden University of Technology, Faculty of Environmental Science, Institute of Urban and Industrial Water Management, Process Engineering in Hydro Systems, 01062, Dresden, GermanyGroundwater with high nitrate concentrations requires treatment before potable use. Conventional treatment methods such as nanofiltration and reverse osmosis can be used for desalination of most solutes. In contrast, a monovalent selective membrane capacitive deionization (mMCDI) can be used for selective nitrate removal. We use a nanofiltration membrane and anion exchange membranes with an additional neutral layer (AEM-Neutral) or a polyamide layer (AEM-PA) for selective nitrate removal with mMCDI by using a solution of mixed monovalent and polyvalent ions. Monovalent ion selectivity in short-term experiments is up to 17.3 with a nanofiltration membrane, up to 1.7 for AEM-Neutral and up to 5.2 for AEM-PA, whereby the specific energy consumption and water recovery depends on cell structure, applied electric voltage, flow rate and desorption time. Selective nitrate removal with AEM-PA or AEM-Neutral at 0.8 V demonstrated a specific energy consumption of 2 Wh g−1 removed nitrate, lower than pressure-driven membrane processes.http://www.sciencedirect.com/science/article/pii/S2212371725000125Membrane capacitive deionizationMonovalent ionsNitratePartial desalinationSelectivity |
| spellingShingle | Hanna Rosentreter Maja Moch David Schödel Michael Jeske Tim Oddoy Jochen Meier-Haack Amit N. Shocron André Lerch Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal Water Resources and Industry Membrane capacitive deionization Monovalent ions Nitrate Partial desalination Selectivity |
| title | Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal |
| title_full | Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal |
| title_fullStr | Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal |
| title_full_unstemmed | Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal |
| title_short | Lab-scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal |
| title_sort | lab scale experiments with a monovalent ion selective membrane capacitive deionization for nitrate removal |
| topic | Membrane capacitive deionization Monovalent ions Nitrate Partial desalination Selectivity |
| url | http://www.sciencedirect.com/science/article/pii/S2212371725000125 |
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