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Coagulation of TiO2, CeO2 nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Date de publication2020
Résumé

Intensive use of engineered nanoparticles (NPs) results in their release into aquatic systems and consequently into drinking water resources. Therefore, it is important to evaluate how NPs can be effectively removed through water treatment processes, such as coagulation, to control environmental and health risks associated with NP exposure. This work investigates the effect of two conventional coagulants, polyaluminum chloride (PACl) and iron chloride (FeCl3), on NPs. Three bottled mineral and Lake Geneva waters, currently used as drinking water resources, were considered to get an insight into coagulation efficiency. TiO2, CeO2 NPs, and polystyrene (PS) nanoplastics were selected, owing to their large number of applications and contrasting surface charge and aggregation behavior at environmental pH. Our findings indicate that PACl is more efficient compared with FeCl3 since lower dosages are required to coagulate all nanoparticles. On the other hand, nanoplastic coagulation is found less efficient compared with TiO2 and CeO2 NPs. This is an important outcome indicating that nanoplastic stability and dispersion state will be more pronounced and therefore more challenging to eliminate. Results highlight the key role of NP and PS nanoplastic surface charge, as well as water properties, coagulant type, and dosage on nanoparticle elimination from aquatic systems

Mots-clés
  • Nanoplastics
  • Nanoparticles
  • Coagulation
  • Polyaluminum chloride
  • Iron chloride
  • TiO2
  • CeO2
Financement
  • Autre - Fowa SSIGE SIG
Citation (format ISO)
RAMIREZ ARENAS, Lina Marcela et al. Coagulation of TiO<sub>2</sub>, CeO<sub>2</sub> nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage. In: Water Environment Research, 2020. doi: 10.1002/wer.1313
Fichiers principaux (1)
Article (Published version)
accessLevelRestricted
Identifiants
ISSN du journal1554-7531
285vues
16téléchargements

Informations techniques

Création12/06/2020 15:14:00
Première validation12/06/2020 15:14:00
Heure de mise à jour15/03/2023 22:06:43
Changement de statut15/03/2023 22:06:42
Dernière indexation17/01/2024 10:05:48
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