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http://dx.doi.org/10.7857/JSGE.2016.21.1.104

Transport of PVP-coated Silver Nanoparticles in Saturated Porous Media  

Bae, Sujin (Future Environmental Research Center, Korea Institute of Toxicology)
Jang, Min-Hee (Future Environmental Research Center, Korea Institute of Toxicology)
Lee, Woo Chun (Future Environmental Research Center, Korea Institute of Toxicology)
Park, Jae-Woo (Department of Civil & Environmental Engineering, Hanyang University)
Hwang, Yu Sik (Future Environmental Research Center, Korea Institute of Toxicology)
Publication Information
Journal of Soil and Groundwater Environment / v.21, no.1, 2016 , pp. 104-110 More about this Journal
Abstract
The transport of silver nanoparticles (AgNPs) was investigated through a column packed with sand. A series of column experiments were carried out to evaluate the effect of ionic strength (IS), pH, electrolyte type and clay mineral on mobility of polyvinylpyrrolidone-coated silver nanoparticles (PVP-AgNPs). The deposition of PVP-AgNPs was increased with increasing solution ionic strength and decreasing pH. Furthermore, the depositon of PVP-AgNPs was affected by the electrolyte type (NaCl vs. NaNO3) and was shown to be greater at NaNO3 solution. Also, the transport of PVP-AgNPs was greatly increased after the pre-deposition of clay particles on sand. Our results suggest that various environmental factors can influence the mobility of PVP-AgNPs in soil-groundwater systems and should be carefully considered in assessing their environmental risks.
Keywords
Silver nanoparticles; Transport; Ionic strength; pH; Clay;
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