Title: Reclamation of unconventional water using nano zero-valent iron particles: an application for groundwater

Authors: Saeid Eslamian; Mohamad Javad Amiri; Jahangir Abedi-Koupai; Sara Shaeri Karimi

Addresses: Department of Water, Collage of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran ' Department of Water, Collage of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran ' Department of Water, Collage of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran ' Dezab Consulting Engineers Company, Ahvaz, 61366-93988, Khuzestan, Iran

Abstract: Nano zero-valent iron (nZVI) is one of the most prominent examples of a rapidly emerging technology for the treatment of contaminated soil and groundwater. These particles were used successfully to absorb various heavy metals (e.g., Pb²⁺, Ba²⁺, As⁵⁺, As³⁺, Cr⁶⁺, Co²⁺, Cd²⁺, Cu²⁺), chlorinated organic contaminants (e.g., solvents, pesticides), nitrate and so on. nZVI particles have a large surface area and high surface reactivity. However, the agglomeration, oxidation by non-target compounds and high mobility in the aqueous solutions are the major challenges of nZVI use in environmental remediation. In general, there are several gaps concerning fate, transport and toxicity of nZVI. In recent years, considerable efforts have been made to overcome these problems. These efforts include synthetic methods, surface property modification, trapping of nZVI in different beads and enhancement for field delivery and reactions. This paper provides an overview of research on reclamation of unconventional water with nZVI.

Keywords: nanoparticles; zero-valent iron; nZVI; aqueous solutions; unconventional water reclamation; groundwater pollution; water pollution; soil contamination; heavy metals; absorption; nanotechnology; environmental remediation.

DOI: 10.1504/IJW.2013.051975

International Journal of Water, 2013 Vol.7 No.1/2, pp.1 - 13

Published online: 21 Oct 2014 *

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