Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.scitotenv.2025.179359 |
Licence  |
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| Title (Primary) | Effects of salinity on the adsorption of cadmium and zinc to tire and road wear particles in water – Significance for river systems and road runoff treatment |
| Author | Rocha Vogel, A.
; Kolberg, Y.; von Tümpling, W.
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| Source Titel | Science of the Total Environment |
| Year | 2025 |
| Department | FLOEK |
| Volume | 977 |
| Page From | art. 179359 |
| Language | englisch |
| Topic | T4 Coastal System T5 Future Landscapes |
| Supplements | https://ars.els-cdn.com/content/image/1-s2.0-S0048969725009957-mmc1.docx |
| Keywords | Salinity; Adsorption; Trace elements; Tire wear particles (TWP); Tire and road wear particles (TRWP); Elbe catchment; Runoff treatment |
| Abstract | Tire wear particles (TWP) are potential pollutants of emerging concern. Therefore, the EU is set to regulate the TWP emissions under the new Euro 7 emission standard. For Germany it is estimated that up to 20,000 t TWP reach the aquatic environment. Main transport pathways are via road runoff and separate sewage systems. Studies indicate that, apart from ecotoxicological concerns, the negatively charged surface of TWP can adsorb heavy metals like Cr, Ni, Zn, Cd and Pb, potentially deteriorating the chemical water quality of rivers. As rivers usually undergo a salt gradient from their source to the sea this may change the adsorption of heavy metals. We investigated the influence of salinity on the heavy metal adsorption on TWP using water samples from the Freiberger Mulde (Saxony, Germany), enriched with NaCl to simulate the salinity representative of different rivers in the Elbe catchment area, and additional water samples (Elbe, Saale, Bode, Schlenze). The adsorption of Cd and Zn appear to be highly salt-dependent. Above 12 mg L−1 Cl−, no significant adsorption was observed. It is assumed that both metals form [MCl4]2− complexes which are repelled from the negative surface of TWP. The potential in building these complexes is high enough to dissolve previously adsorbed Cd from TWP. These findings are important for assessing water quality of river systems as well as runoff filtration and water retention systems. In winter, for instance, when de-icing salt is applied, Cd and Zn bound on TWP may be mobilized entering water systems. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=30699 |
| Rocha Vogel, A., Kolberg, Y., von Tümpling, W. (2025): Effects of salinity on the adsorption of cadmium and zinc to tire and road wear particles in water – Significance for river systems and road runoff treatment Sci. Total Environ. 977 , art. 179359 10.1016/j.scitotenv.2025.179359 |
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