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A. Ramazanpour Esfahani,A. Farrokhian Firouzi,Gh. Sayyad,A.R. Kiasat 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
This study investigated the transport and retention of polyacrylic acid and polyvinylpyrrolidone stabilized zero-valent iron nanoparticles (PAA-ZVIN and PVP-ZVIN) in saturated porous media. The transport experiments were conducted in sand packed columns. The breakthrough curves (BTCs) and retention curves of ZVIN were analyzed. Results of transport experiments showed that increasing initial particle concentration and ionic strength led to a decrease in ZVIN transport. The zeta potentials and hydrodynamic diameters of PAA-ZVIN were apparently more negative compared to PVP-ZVIN. Results indicated that some mechanisms such as aggregation, ripening, and surface roughness had considerable impact on ZVIN retention in porous media. 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V.