Novel application of nanoscale zero valent iron and bimetallic nano-Fe/Cu particles for the treatment of cesium contaminated water

Tamer Shubair, Osama Eljamal, Ahmed M. E. Khalil, Atsushi Tahara, Nobuhiro Matsunaga

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Following the accident at the Fukushima Daiichi Nuclear Power Plant in 2011, radioactive cesium was released
into the environment in large amounts and heavily contaminated drinking water in Fukushima and neighboring
prefectures. In this research, the capability of nanoscale zero valent iron (nZVI) and bimetallic nano-Fe/Cu
particles for cesium removal from aqueous solutions was evaluated for the first time. The nanoparticles were
characterized by TEM, XRD, SEM-EDS and BET-N2 adsorption. The effect of several variables such as initial
cesium concentration, contact time, pH, temperature, competing cations and dosage of the nanoparticles on the
sorption behavior of cesium was studied using a batch technique. The obtained results showed that nZVI and
nano-Fe/Cu particles displayed effective performance for removal of cesium. For both nanoparticles, the removal
efficiency exceeded 99% at initial cesium concentration of 1 mg/L and 1 g/L doses. The experimental data were
well fitted to the pseudo-second-order kinetic model, which means that the overall rate constant of cesium
sorption process was controlled by chemisorption. The rate constant of nano-Fe/Cu particles was larger than that
of nZVI, indicating a faster kinetic sorption by nano-Fe/Cu particles. The thermodynamic parameters indicated
exothermic and spontaneous nature of the sorption process. The Langmuir, Freundlich and Redlich-Peterson
isotherm models were also used to fit the equilibrium data. nZVI and nano-Fe/Cu particles exhibited excellent
selective sorption toward cesium in the simulated contaminated water after Fukushima accident. The current
work demonstrated that nZVI and nano-Fe/Cu particles can be considered as promising materials for cesium
removal from contaminated waters.
Original languageEnglish
Pages (from-to)4253-4264
Number of pages12
JournalJournal of Environmental Chemical Engineering
Volume6
Issue number4
Publication statusPublished - Jun 6 2018

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Cesium
cesium
Iron
Water
Sorption
sorption
Nanoparticles
water
accident
Rate constants
Accidents
kinetics
Kinetics
Chemisorption
nuclear power plant
Potable water
Drinking Water
Nuclear power plants
iron nanoparticle
particle

Cite this

Novel application of nanoscale zero valent iron and bimetallic nano-Fe/Cu particles for the treatment of cesium contaminated water. / Shubair, Tamer; Eljamal, Osama; Khalil, Ahmed M. E.; Tahara, Atsushi; Matsunaga, Nobuhiro.

In: Journal of Environmental Chemical Engineering, Vol. 6, No. 4, 06.06.2018, p. 4253-4264.

Research output: Contribution to journalArticle

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abstract = "Following the accident at the Fukushima Daiichi Nuclear Power Plant in 2011, radioactive cesium was releasedinto the environment in large amounts and heavily contaminated drinking water in Fukushima and neighboringprefectures. In this research, the capability of nanoscale zero valent iron (nZVI) and bimetallic nano-Fe/Cuparticles for cesium removal from aqueous solutions was evaluated for the first time. The nanoparticles werecharacterized by TEM, XRD, SEM-EDS and BET-N2 adsorption. The effect of several variables such as initialcesium concentration, contact time, pH, temperature, competing cations and dosage of the nanoparticles on thesorption behavior of cesium was studied using a batch technique. The obtained results showed that nZVI andnano-Fe/Cu particles displayed effective performance for removal of cesium. For both nanoparticles, the removalefficiency exceeded 99{\%} at initial cesium concentration of 1 mg/L and 1 g/L doses. The experimental data werewell fitted to the pseudo-second-order kinetic model, which means that the overall rate constant of cesiumsorption process was controlled by chemisorption. The rate constant of nano-Fe/Cu particles was larger than thatof nZVI, indicating a faster kinetic sorption by nano-Fe/Cu particles. The thermodynamic parameters indicatedexothermic and spontaneous nature of the sorption process. The Langmuir, Freundlich and Redlich-Petersonisotherm models were also used to fit the equilibrium data. nZVI and nano-Fe/Cu particles exhibited excellentselective sorption toward cesium in the simulated contaminated water after Fukushima accident. The currentwork demonstrated that nZVI and nano-Fe/Cu particles can be considered as promising materials for cesiumremoval from contaminated waters.",
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AB - Following the accident at the Fukushima Daiichi Nuclear Power Plant in 2011, radioactive cesium was releasedinto the environment in large amounts and heavily contaminated drinking water in Fukushima and neighboringprefectures. In this research, the capability of nanoscale zero valent iron (nZVI) and bimetallic nano-Fe/Cuparticles for cesium removal from aqueous solutions was evaluated for the first time. The nanoparticles werecharacterized by TEM, XRD, SEM-EDS and BET-N2 adsorption. The effect of several variables such as initialcesium concentration, contact time, pH, temperature, competing cations and dosage of the nanoparticles on thesorption behavior of cesium was studied using a batch technique. The obtained results showed that nZVI andnano-Fe/Cu particles displayed effective performance for removal of cesium. For both nanoparticles, the removalefficiency exceeded 99% at initial cesium concentration of 1 mg/L and 1 g/L doses. The experimental data werewell fitted to the pseudo-second-order kinetic model, which means that the overall rate constant of cesiumsorption process was controlled by chemisorption. The rate constant of nano-Fe/Cu particles was larger than thatof nZVI, indicating a faster kinetic sorption by nano-Fe/Cu particles. The thermodynamic parameters indicatedexothermic and spontaneous nature of the sorption process. The Langmuir, Freundlich and Redlich-Petersonisotherm models were also used to fit the equilibrium data. nZVI and nano-Fe/Cu particles exhibited excellentselective sorption toward cesium in the simulated contaminated water after Fukushima accident. The currentwork demonstrated that nZVI and nano-Fe/Cu particles can be considered as promising materials for cesiumremoval from contaminated waters.

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