Artikel ; Online: Detailed insights in adsorption process of heavy metals on tire wear particles
Environmental Pollution. 2023 Oct., v. 335 p.122293-
2023
Abstract: Road traffic induced tire wear particles (TWP) attracted widespread attention due to their potential environmental impact. Here, the adsorption process of heavy metals like Pb²⁺ and Cd²⁺ on tire wear particles produced by filing (TWP-f) is studied to ... ...
| Abstract | Road traffic induced tire wear particles (TWP) attracted widespread attention due to their potential environmental impact. Here, the adsorption process of heavy metals like Pb²⁺ and Cd²⁺ on tire wear particles produced by filing (TWP-f) is studied to elucidate the underlying kinetics and thermodynamics. This work includes voltammetric experiments to investigate the concentration and temperature dependency of the adsorption. The adsorption kinetics in buffer solution spiked with heavy metals follows a pseudo-second-order rate equation involving rate-controlling boundary layer adsorption and a side-by-side intraparticle diffusion process. Meanwhile, the adsorption tendencies under the studied conditions for TWP-f were Pb²⁺ > Cd²⁺. The equilibrium adsorption data were modulated by the Langmuir, Freundlich, and Dubinin-Radushkevich (DR) isotherms. Both the Freundlich and DR isotherms were found to be feasible for describing the adsorption on TWP-f. The adsorption energy obtained from the DR isotherm is 1.6 kJ mol⁻¹ for Pb²⁺ and 2 kJ mol⁻¹ for Cd²⁺, indicating physisorption as the dominating force. According to the Freundlich isotherm, multilayer adsorption is proposed. The thermodynamic parameters show that the adsorption of Pb²⁺ and Cd²⁺ is endergonic. Due to small Gibbs enthalpy values near the thermodynamic equilibrium, the adsorption process is mainly dependent on the ambient conditions. So, close-to-nature experiments were conducted to verify the received results. Therefore, tire and road wear particles including road sediments (TRWP+RS) were added to prefiltered freshwater samples of the river Freiberger Mulde (having naturally elevated trace element concentrations). The adsorption kinetics were investigated by ICP-MS/MS emphasizing the pseudo-second-order rate equation. Moreover, it is suggested that the tire wear particles in the TRWP+RS sample are majorly responsible for the adsorption of at least Cd²⁺. |
|---|---|
| Schlagwörter | adsorption ; energy ; enthalpy ; environmental impact ; equations ; freshwater ; pollution ; rivers ; sorption isotherms ; temperature ; trace elements ; traffic ; voltammetry ; Adsorption kinetic ; Adsorption isotherms ; Heavy metals ; River samples ; Tire wear particles |
| Sprache | Englisch |
| Erscheinungsverlauf | 2023-10 |
| Erscheinungsort | Elsevier Ltd |
| Dokumenttyp | Artikel ; Online |
| ZDB-ID | 280652-6 |
| ISSN | 1873-6424 ; 0013-9327 ; 0269-7491 |
| ISSN (online) | 1873-6424 |
| ISSN | 0013-9327 ; 0269-7491 |
| DOI | 10.1016/j.envpol.2023.122293 |
| Datenquelle | NAL Katalog (AGRICOLA) |
Volltext online
Zusatzmaterialien
Kategorien
Verfügbar in ZB MED Bonn
| Z 4136: Hefte anzeigen |
Über subito bestellen
Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.
Fernleihe an ZB MED
Sie können sich den gewünschten Titel als lokale Nutzerin oder lokaler Nutzer von ZB MED direkt an den Standort Köln schicken lassen.