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Scientific article
English

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

Publication date2020
Abstract

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

Keywords
  • Nanoplastics
  • Nanoparticles
  • Coagulation
  • Polyaluminum chloride
  • Iron chloride
  • TiO2
  • CeO2
Funding
  • Autre - Fowa SSIGE SIG
Citation (ISO format)
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
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal1554-7531
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16downloads

Technical informations

Creation06/12/2020 3:14:00 PM
First validation06/12/2020 3:14:00 PM
Update time03/15/2023 10:06:43 PM
Status update03/15/2023 10:06:42 PM
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