Magnetic zeolites: a new adsorbent for removal of metallic contaminants from water
In this work the adsorption features of NaY zeolite with the magnetic properties of iron oxides have been combined in a composite to produce a magnetic adsorbent. These magnetic composites can be used as an adsorbent for metallic contaminants in water and subsequently removed from the medium by a si...
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Published in | Water research (Oxford) Vol. 38; no. 17; pp. 3699 - 3704 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.10.2004
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | In this work the adsorption features of NaY zeolite with the magnetic properties of iron oxides have been combined in a composite to produce a magnetic adsorbent. These magnetic composites can be used as an adsorbent for metallic contaminants in water and subsequently removed from the medium by a simple magnetic process. The zeolites:iron oxide magnetic composites, were prepared by using NaY with weight ratio of 3:1 and were characterized by powder X-ray diffraction (XRD), magnetization measurements, chemical analyses, N2 adsorption isotherms and Mössbauer spectroscopy. Nitrogen adsorption isotherms showed that the surface area decreased from 505m2g−1 for the pure NaY to 353m2g−1 for the NaY:Fe oxide 3:1 composite. The adsorption isotherms of metal ions Cr3+, Cu2+ and Zn2+ from aqueous solution onto the composites also showed that the presence of iron oxide does not affect the adsorption capacity. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0043-1354 1879-2448 |
DOI: | 10.1016/j.watres.2004.06.008 |