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Revista de Chimie (Rev. Chim.), Year 2015, Volume 66, Issue 11,





CORNELIU M. DAVIDESCU, RALUCA DUMITRU, ADINA NEGREA, LAVINIA LUPA, MIHAELA CIOPEC, PETRU NEGREA
Arsenic Removal Through Adsorption on Cobalt Nanoferrite

Abstract:

This paper presents the studies regarding the synthesis, characterization and application of cobalt ferrite nanoparticles. For the synthesis of cobalt ferrite was used the thermal decomposition of [Fe2Co(C2O4)4(OH2)6] precursor at 500oC, an efficient route of various ferrites synthesis. The obtained cobalt ferrite was investigated by FTIR spectroscopy, X-ray diffraction, SEM coupled with EDX, investigations which showed that the obtained particles are homogeneous as shape and size. Due to the obtained nanoparticles and due to the affinity of arsenic toward iron, the obtained cobalt ferrite was applied with success as adsorbent in the removal process of arsenic from aqueous solutions. The studied material developed a maximum adsorption capacity (according to Langmuir isotherm) of 250 mg of As(V)/g of cobalt ferrite, obtaining a residual concentration of As(V) under the maximum admitted value by the World Health Organization (10mg/L). Keywords: cobalt nanoferrite, X-ray diffraction, adsorption, arsenic removal, Langmuir isotherm


Issue: 2015, Volume 66, Issue 11
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