Silver nanoparticle removal from drinking water: flocculation/sedimentation or filtration?

Silver nanoparticles are used in a wide variety of consumer products and are therefore rapidly becoming ubiquitous in the natural environment; they can be expected to be found in the natural waters used as drinking water supplies. This research investigated whether such particles could be expected t...

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Vydáno v:Water science & technology. Water supply Ročník 13; číslo 5; s. 1181 - 1187
Hlavní autoři: Lawler, Desmond F., Mikelonis, Anne M., Kim, Ijung, Lau, Boris L. T., Youn, Sungmin
Médium: Journal Article
Jazyk:angličtina
Vydáno: London International Water Association 01.09.2013
IWA Publishing
Témata:
Applied sciences
Buildings. Public works
Citric acid
Consumer products
Destabilization
Drinking water
Exact sciences and technology
Filtration
Flocculation
Nanoparticles
Natural environment
Natural waters
Organic matter
Removal
Sedimentation
Silver
Water purification
Water supply
Water supply. Pipings. Water treatment
Water treatment
Water treatment plants
Removal
Drinking water treatment
Silver
Filtration
nanoparticles
particle destabilization
Granular material
Nanoparticle
Flocculation
granular media filtration
Sedimentation
ISSN:1606-9749, 1607-0798
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Popis
Shrnutí:Silver nanoparticles are used in a wide variety of consumer products and are therefore rapidly becoming ubiquitous in the natural environment; they can be expected to be found in the natural waters used as drinking water supplies. This research investigated whether such particles could be expected to be removed in conventional water treatment plants such as flocculation and filtration. Both flocculation and granular media filtration experiments with citrate-capped silver nanoparticles were performed at different ionic strengths and in the presence and absence of natural organic matter. The results were generally consistent with theories of particle destabilization that have been developed for larger particles (greater than 1 μm), suggesting that silver nanoparticles are likely to be removed in conventional treatment processes.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1606-9749
1607-0798
DOI:10.2166/ws.2013.125