- Transport of PVP-coated Silver Nanoparticles in Saturated Porous Media
- Bae, Sujin;Jang, Min-Hee;Lee, Woo Chun;Park, Jae-Woo;Hwang, Yu Sik;
- Future Environmental Research Center, Korea Institute of Toxicology;Future Environmental Research Center, Korea Institute of Toxicology;Future Environmental Research Center, Korea Institute of Toxicology;Department of Civil & Environmental Engineering, Hanyang University;Future Environmental Research Center, Korea Institute of Toxicology;
- 포화된 다공성매체에서 PVP-코팅된 은나노입자의 이동성 연구
- 배수진;장민희;이우춘;박재우;황유식;
- 안전성평가연구소, 미래환경연구센터;안전성평가연구소, 미래환경연구센터;안전성평가연구소, 미래환경연구센터;한양대학교 건설환경공학과;안전성평가연구소, 미래환경연구센터;
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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