Degradation of Lindane Contaminated Soil Using Zero-Valent Iron Nanoparticles

Abstract

Lindane, has been classified by the United States Environment Protection Agency as a potent carcinogen and teratogen. Zero-valent iron nanoparticles (nZVI) have been shown to effectively transform chlorinated hydrocarbons, organochlorine pesticides. An attempt has been made to explore the potential of nZVI for the remediation of Lindane contaminated soil. nZVI was synthesized by reducing FeCl3 with NaBH4. Lindane (10 microg/g) completely disappeared from spiked soil within 24 hours at nZVI concentration of 1.6 g/L, indicating its possible use in environmental cleanup. Reductive dehalogenation is the predominant mechanism for the removal of Lindane from spiked soil by nZVI. Dechlorination was further confirmed by the chloride ion release.

Groundwater Water Remediation by Static Diffusion Using Nano‐Zero Valent Metals (Fe0, Cu0, Al0), n‐FeHn+, n‐Fe(OH)x, n‐FeOOH, n‐Fe‐[OxHy](n+/−)

“…The halogen is one or more of Cl, Br, I, F. [54][55][56][57], for example, chloromethane (CM), trichloromethane (TCM), dichloromethane (DCM), tetrachloromethane; perchloroethylene (PCE), trichloroethylene (TCE), dichloroethylene (DCE); vinyl chloride (VC); hexachloroethane, tetrachloroethane, trichloroethane, dichloroethane, chloropropane (etc. Organic nitrogenous compounds, including azo dyes [59][60][61], atrazine [62,63], cyclonite/hexogen (RDX) [14,64], dinitrotoluene (DnT) [65,66], nitrosodimethylamine (nDMA) [67,68], nitrocellulose [69], tetramethylenetetranitramine (HMX) [70][71][72], trinitrotoluene (TnT) [73][74][75], disinfection by-products (DBPs) [76,77], fertilizers [78,79], pesticides [80][81][82][83], herbicides [84,85], fungicides [86]. ), chlorobenzene, (etc.…”

Applications and implications of manufactured nanoparticles in soils: a review

“…This technology has been reported to be effective for reducing the impact of both organic and inorganic pollutants. For example, nZVI can effectively degrade chlorinated hydrocarbons and organochlorine pesticides (Qiu & Fang, 2010; Singh et al , 2011). Li et al (2011) used a silica fume (an amorphous polymorph of silicon dioxide, used mainly in cement) to support nZVI, and the supported nZVI was observed to be more active in the reductive immobilization of Cr(VI) (physically sorbed and subsequently reduced to Cr(III)).…”

Nanoremediation and International Environmental Restoration Markets

“…nZVI is also considered to have a better potential to migrate in aquifers. Furthermore, there may be a potential extension of the range of treatable contaminants to include types traditionally seen as recalcitrant, for example, PCB and lindane (Bezbaruah et al 2009, Singh et al 2011.…”