Removal of hexavalent chromium from contaminated ground water using zero-valent iron nanoparticles.

Abstract:

:Batch experiments were conducted on ground water samples collected from a site contaminated with Cr(VI) to evaluate the redox potential of zero-valent iron (Fe(0)) nanoparticles for remediation of Cr(VI)-contaminated ground water. For this, various samples of contaminated ground water were allowed to react with various loadings of Fe(0) nanoparticles for a reaction period of 60 min. Data showed 100% reduction of Cr(VI) in all the contaminated ground water samples after treatment with 0.20 gL(-1) of Fe(0) nanoparticles. An increase in the reduction of Cr(VI) from 45% to 100% was noticed with the increase in the loading of Fe(0) nanoparticles from 0.05 to 0.20 gL(-1). Reaction kinetics of Cr(VI) reduction showed pseudo first-order kinetics with rate constant in the range of 1.1 × 10(-3) to 3.9 × 10(-3) min(-1). This work demonstrates the potential utility of Fe(0) nanoparticles in treatment and remediation of Cr(VI)-contaminated water source.

journal_name

Environ Monit Assess

authors

Singh R,Misra V,Singh RP

doi

10.1007/s10661-011-2213-5

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

3643-51

issue

6

eissn

0167-6369

issn

1573-2959

journal_volume

184

pub_type

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