Removal of Pb(II) and Cd(II) ions from water by Fe and Ag nanoparticles prepared using electro-exploding wire technique.

Environmental Science and Pollution Research International
Abdullah AlqudamiSaqr Munassar

Abstract

This work aimed at investigating the adsorption of lead and cadmium onto Fe and Ag nanoparticles for use as a water contaminant removal agent as a function of particle type, sorbent concentration, and contact time. Fe and Ag spherical nanoparticles were prepared in water by the lab-made electro-exploding wire (EEW) system and were investigated for their structure properties. Adsorption experiments were carried out at room temperature and pH 8.3 water solutions. The removal/adsorption of both Pb(II) and Cd(II) ions was found to be dependent on adsorbent dosage and contact time. Pb(II) adsorption onto Fe and Ag nanoparticles showed more or less similar efficiency and behavior. The kinetic data for the adsorption process obeyed pseudo second-order rate equations. The calculated equilibrium adsorption capacities (q(e)) were 813 and 800 mg/g for Pb sorption onto Fe and Ag nanoparticles, respectively. Cd(II) ion adsorption onto Fe nanoparticles obeyed pseudo second-order rate equations with q(e) equal to 242 mg/g, while their adsorption onto Ag nanoparticles obeyed pseudo first-order rate equations with q(e) of 794 mg/g. The calculated q(e)s are in quite agreement with the experimental values. The removal/uptake mechanisms of metal i...Continue Reading

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Citations

Mar 22, 2015·Environmental Geochemistry and Health·Anushka Upamali RajapakshaYong Sik Ok
May 20, 2015·Journal of Colloid and Interface Science·Mahesh Kumar JoshiCheol Sang Kim
Jan 17, 2020·Environmental Science and Pollution Research International·Maqusood AhamedHisham A Alhadlaq

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