Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry
Electrochemical precipitation with rotating electrodes is investigated by a two-chamber pilot reactor. While deposits from disk surface of rotating electrodes are commonly removed by wipes this pilot reactor comprises of cathodic disks with newly developed composite materials for mitigation of depos...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-12-01
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| Series: | Water Resources and Industry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212371725000289 |
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| author | Lena Hahn João Marcos Monteiro Ulrich Kunz Michael Sievers |
| author_facet | Lena Hahn João Marcos Monteiro Ulrich Kunz Michael Sievers |
| author_sort | Lena Hahn |
| collection | DOAJ |
| description | Electrochemical precipitation with rotating electrodes is investigated by a two-chamber pilot reactor. While deposits from disk surface of rotating electrodes are commonly removed by wipes this pilot reactor comprises of cathodic disks with newly developed composite materials for mitigation of deposits. The cathodic and anodic chamber were used for precipitation and neutralization reactions, respectively. Original wastewater samples with a total volume of 25 m3 were treated to remove the heavy metals Mn2+, Ni2+, Zn2+ as hydroxides below 0.5 mgMe2+/L. The coupling of precipitation and neutralization with same wastewater in one system was demonstrated without addition of chemicals such as acid, base, precipitation and flocculation chemicals thus demonstrating a resource efficient treatment option for wastewater of the metal industry. The complete removal of heavy metals was ensured by proper control of pH through adjustment of power input into the electrolysis system independently of wastewater input composition. |
| format | Article |
| id | doaj-art-ae44a7d67f0c48d9b100647aaf4740ed |
| institution | Kabale University |
| issn | 2212-3717 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Resources and Industry |
| spelling | doaj-art-ae44a7d67f0c48d9b100647aaf4740ed2025-08-20T03:26:31ZengElsevierWater Resources and Industry2212-37172025-12-013410030410.1016/j.wri.2025.100304Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industryLena Hahn0João Marcos Monteiro1Ulrich Kunz2Michael Sievers3CUTEC Research Center of the TU Clausthal, Clausthal-Zellerfeld, Germany; Corresponding author.Institute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, GermanyInstitute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, GermanyCUTEC Research Center of the TU Clausthal, Clausthal-Zellerfeld, Germany; Institute for Geotechnology and Mineral Resources, Department Resource Processing Technologies, Clausthal University of Technology, Clausthal-Zellerfeld, GermanyElectrochemical precipitation with rotating electrodes is investigated by a two-chamber pilot reactor. While deposits from disk surface of rotating electrodes are commonly removed by wipes this pilot reactor comprises of cathodic disks with newly developed composite materials for mitigation of deposits. The cathodic and anodic chamber were used for precipitation and neutralization reactions, respectively. Original wastewater samples with a total volume of 25 m3 were treated to remove the heavy metals Mn2+, Ni2+, Zn2+ as hydroxides below 0.5 mgMe2+/L. The coupling of precipitation and neutralization with same wastewater in one system was demonstrated without addition of chemicals such as acid, base, precipitation and flocculation chemicals thus demonstrating a resource efficient treatment option for wastewater of the metal industry. The complete removal of heavy metals was ensured by proper control of pH through adjustment of power input into the electrolysis system independently of wastewater input composition.http://www.sciencedirect.com/science/article/pii/S2212371725000289Pilot electrolysisHeavy metalsScale-upWastewater treatment |
| spellingShingle | Lena Hahn João Marcos Monteiro Ulrich Kunz Michael Sievers Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry Water Resources and Industry Pilot electrolysis Heavy metals Scale-up Wastewater treatment |
| title | Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry |
| title_full | Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry |
| title_fullStr | Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry |
| title_full_unstemmed | Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry |
| title_short | Wastewater electrolysis part 2 – Pilot reactor study for resource efficient applications in metal industry |
| title_sort | wastewater electrolysis part 2 pilot reactor study for resource efficient applications in metal industry |
| topic | Pilot electrolysis Heavy metals Scale-up Wastewater treatment |
| url | http://www.sciencedirect.com/science/article/pii/S2212371725000289 |
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