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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) 2004-10, Vol.38 (17), p.3699-3704
Main Authors:	Oliveira, Luiz C.A., Petkowicz, Diego I., Smaniotto, Alessandra, Pergher, Sibele B.C.
Format:	Article
Language:	English
Subjects:	Adsorbents Adsorption Applied sciences Chemistry Chromium - isolation & purification Copper - isolation & purification Exact sciences and technology General and physical chemistry Industrial wastewaters Magnetic adsorbents Magnetic zeolites Magnetics Metallic contaminants Pollution Surface physical chemistry Wastewaters Water Pollutants - isolation & purification Water Purification - methods Water treatment and pollution Zeolite Zeolites - chemistry Zinc - isolation & purification
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creator	Oliveira, Luiz C.A. Petkowicz, Diego I. Smaniotto, Alessandra Pergher, Sibele B.C.
description	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.
doi_str_mv	10.1016/j.watres.2004.06.008
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subjects	Adsorbents Adsorption Applied sciences Chemistry Chromium - isolation & purification Copper - isolation & purification Exact sciences and technology General and physical chemistry Industrial wastewaters Magnetic adsorbents Magnetic zeolites Magnetics Metallic contaminants Pollution Surface physical chemistry Wastewaters Water Pollutants - isolation & purification Water Purification - methods Water treatment and pollution Zeolite Zeolites - chemistry Zinc - isolation & purification
title	Magnetic zeolites: a new adsorbent for removal of metallic contaminants from water
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