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

TitleSilver nanoparticle removal from drinking water: flocculation/sedimentation or filtration?
Publication TypeJournal Article
Year of Publication2013
AuthorsLawler DF, Mikelonis AM, Kim I, Lau BLT, Youn S
JournalWater Science & Technology: Water Supply
Volume13
Issue5
Start Page1181
Pagination1181-1187
Date Published09/2013
Keywordsflocculation, granular media filtration, nanoparticles, particle destabilization
Abstract

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.

URLhttp://dx.doi.org/10.2166/ws.2013.125
DOI10.2166/ws.2013.125