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Erschienen in: Adsorption 2-4/2013

01.04.2013

Magnetite nanoparticles for removal of heavy metals from aqueous solutions: synthesis and characterization

verfasst von: Liliana Giraldo, Alessandro Erto, Juan Carlos Moreno-Piraján

Erschienen in: Adsorption | Ausgabe 2-4/2013

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Abstract

Fe3O4 magnetic nanoparticles were synthesized by co-precipitation method. The structural characterization showed an average nanoparticle size of 8 nm. The synthesized Fe3O4 nanoparticles were tested for the treatment of synthetic aqueous solutions contaminated by metal ions, i.e. Pb(II), Cu(II), Zn(II) and Mn(II). Experimental results show that the adsorption capacity of Fe3O4 nanoparticles is maximum for Pb(II) and minimum for Mn(II), likely due to a different electrostatic attraction between heavy metal cations and negatively charged adsorption sites, mainly related to the hydrated ionic radii of the investigated heavy metals. Various factors influencing the adsorption of metal ions, e.g., pH, temperature, and contacting time were investigated to optimize the operating condition for the use of Fe3O4 nanoparticles as adsorbent. The experimental results indicated that the adsorption is strongly influenced by pH and temperature, the effect depending on the different metal ion considered.

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Metadaten
Titel
Magnetite nanoparticles for removal of heavy metals from aqueous solutions: synthesis and characterization
verfasst von
Liliana Giraldo
Alessandro Erto
Juan Carlos Moreno-Piraján
Publikationsdatum
01.04.2013
Verlag
Springer US
Erschienen in
Adsorption / Ausgabe 2-4/2013
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI
https://doi.org/10.1007/s10450-012-9468-1

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