Preparation of Magnetically Modified Zeolites and the Application of Metal Ions Adsorption

Abstract:

Natural zeolites combined with the magnetic iron oxides are prepared by a chemical coprecipitation process. A detailed characterization of our magnetically modified zeolite (MMZ) is given, including powder X-ray diffraction (XRD), nitrogen adsorption and vibrating sample magnetometer (VSM). The results reveal that in comparison with Na-zeolite, the structure of MMZ has no obvious change but its surface area increases from 25.13 m² g^-1 to 100.90 m² g^-1. The adsorption properties of MMZ to Pb²⁺ and Cu²⁺ were studied. The results show that the maximum loading capacities for Pb²⁺ and Cu²⁺ in the initial concentration range are 123.74 and 14.633 mg g^-1, respectively. The MMZ can be used as an adsorbent for removal of heavy metal ions from industrial effluents or municipal waters, and the saturated adsorbent is separated from the medium by a simple magnetic process.

• Periodical: Advanced Materials Research (Volumes 299-300)
• Pages: 764-769
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.299-300.764
• Online since: July 2011
• Authors: Ming Liang Yuan, Liang Yu, Jia Hua Tao, Cong Song
• Keywords: Adsorption, Magnetically Modified Zeolites, Metal Ion, Natural Zeolites

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