Source:http://linkedlifedata.com/resource/pubmed/id/18754516
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
15
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pubmed:dateCreated |
2008-8-29
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pubmed:abstractText |
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.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Cerium,
http://linkedlifedata.com/resource/pubmed/chemical/Oxides,
http://linkedlifedata.com/resource/pubmed/chemical/Sewage,
http://linkedlifedata.com/resource/pubmed/chemical/Surface-Active Agents,
http://linkedlifedata.com/resource/pubmed/chemical/Water Pollutants, Chemical,
http://linkedlifedata.com/resource/pubmed/chemical/ceric oxide
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pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0013-936X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
42
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
5828-33
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pubmed:meshHeading |
pubmed-meshheading:18754516-Adsorption,
pubmed-meshheading:18754516-Cerium,
pubmed-meshheading:18754516-Hydrogen-Ion Concentration,
pubmed-meshheading:18754516-Microscopy, Electron, Scanning,
pubmed-meshheading:18754516-Models, Chemical,
pubmed-meshheading:18754516-Nanoparticles,
pubmed-meshheading:18754516-Nanotechnology,
pubmed-meshheading:18754516-Oxides,
pubmed-meshheading:18754516-Sewage,
pubmed-meshheading:18754516-Solubility,
pubmed-meshheading:18754516-Surface-Active Agents,
pubmed-meshheading:18754516-Time Factors,
pubmed-meshheading:18754516-Waste Disposal, Fluid,
pubmed-meshheading:18754516-Water Pollutants, Chemical
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pubmed:year |
2008
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pubmed:articleTitle |
Removal of oxide nanoparticles in a model wastewater treatment plant: influence of agglomeration and surfactants on clearing efficiency.
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pubmed:affiliation |
Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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