MOBILIZATION OF NANO ZERO VALENT IRON (N-ZVI) PARTICLES IN SUBSURFACE

Yangdup Lama, Alok Sinha, Gurdeep Singh

Abstract: Mobility and stability of nano Zero Valent Iron (n-ZVI), in subsurface, for in-situ remediation of groundwater, has been an issue of concern. This may be enhanced by adding various surfactants to n-ZVI slurry. This study was conducted to determine the effect of surfactants like Poly (Acrylic Acid) (PAA), anionic part of Sapindus mukorossi (reetha) extract and Tween 20, at different volume percentages, on the stability and mobility of n-ZVI slurry, through sand and loamy sand column. Results indicate that PAA-modified n-ZVI slurry had maximum mobility and stability through both the soil column followed by reetha-modified and Tween 20 modified nZVI slurry.

Keywords: Nano Zero Valent Iron (n-ZVI), Ground Water, In-Situ Remediation, Polyelectrolytes, Surfactants

DOI: https://doi.org/10.15623/ijret.2013.0208057