|Publication type:||Article in scientific journal|
|Type of review:||Peer review (publication)|
|Title:||Removal of oxide nanoparticles in a model waste water treatment plant : influence of agglomeration and surfactants on clearing efficiency|
|Authors:||Limbach, Ludwig K.|
Stark, Werner J.
|Published in:||Environmental Science & Technology|
|Publisher / Ed. Institution:||American Chemical Society|
|Subject (DDC):||363: Environmental and security problems |
|Abstract:||The rapidly increasing production of engineered nanoparticles has created a demand for particle removal from industrial and communal wastewater streams. Efficient removal is particularly important in view of increasing long-term persistence and evidence for considerable ecotoxicity of specific nanoparticles. The present work investigates the use of a model wastewater treatment plant for removal of oxide nanoparticles. While a majority of the nanoparticles could be captured through adhesion to clearing sludge, a significant fraction of the engineered nanoparticles escaped the wastewater plant’s clearing system, and up to 6 wt % of the model compound cerium oxide was found in the exit stream of the model plant. Our study demonstrates a significant influence of surface charge and the addition of dispersion stabilizing surfactants as routinely used in the preparation of nanoparticle derived products. A detailed investigation on the agglomeration of oxide nanoparticles in wastewater streams revealed a high stabilization of the particles against clearance (adsorption on the bacteria from the sludge). This unexpected finding suggests a need to investigate nanoparticle clearance in more detail and demonstrates the complex interactions between dissolved species and the nanoparticles within the continuously changing environment of the clearing sludge.|
|Fulltext version:||Published version|
|License (according to publishing contract):||Licence according to publishing contract|
|Departement:||Life Sciences and Facility Management|
|Organisational Unit:||Institute of Natural Resource Sciences (IUNR)|
|Appears in collections:||Publikationen Life Sciences und Facility Management|
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Limbach, L. K., Bereiter, R., Müller, E., Krebs, R., Gälli, R., & Stark, W. J. (2008). Removal of oxide nanoparticles in a model waste water treatment plant : influence of agglomeration and surfactants on clearing efficiency. Environmental Science & Technology, 42(15), 5828–5833. https://doi.org/10.1021/es800091f
Limbach, L.K. et al. (2008) ‘Removal of oxide nanoparticles in a model waste water treatment plant : influence of agglomeration and surfactants on clearing efficiency’, Environmental Science & Technology, 42(15), pp. 5828–5833. Available at: https://doi.org/10.1021/es800091f.
L. K. Limbach, R. Bereiter, E. Müller, R. Krebs, R. Gälli, and W. J. Stark, “Removal of oxide nanoparticles in a model waste water treatment plant : influence of agglomeration and surfactants on clearing efficiency,” Environmental Science & Technology, vol. 42, no. 15, pp. 5828–5833, 2008, doi: 10.1021/es800091f.
Limbach, Ludwig K., et al. “Removal of Oxide Nanoparticles in a Model Waste Water Treatment Plant : Influence of Agglomeration and Surfactants on Clearing Efficiency.” Environmental Science & Technology, vol. 42, no. 15, 2008, pp. 5828–33, https://doi.org/10.1021/es800091f.
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