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Updated: May 30, 2026

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
Published on: June 28, 2019
Removal of hexavalent chromium from contaminated ground water using zero-valent iron nanoparticles
Ritu Singh1, Virendra Misra, Rana Pratap Singh
1Ecotoxicology Division, Indian Institute of Toxicology Research (Council of Scientific and Industrial Research), Post Box 80, Mahatma Gandhi Marg, Lucknow, 226 001 UP, India. ritu2735@gmail.com
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.
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