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Characterization of Philippine Natural Zeolite and its Application for Heavy Metal Removal from Acid Mine Drainage (AMD)

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Abstract:

In this study, the adsorption efficiency of Philippine natural zeolite for treating acid mine drainage is investigated. The metal ions considered were Cu2+, Ni2+, and Pb2+ ions. The natural zeolite was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM) equipped with Energy Dispersive X-ray Spectroscopy (EDX). The XRD result revealed that the natural zeolite is mainly composed of heulandite (Ca,Na)2-3Al3(Al,Si)2Si13O36 • 12H2O. Plate-like structures having rough surface and micro-pores were observed. The natural zeolite exhibited adsorption efficiencies of 99.03%, 35.88% and 35.36% for Pb2+, Cu2+, and Ni2+ ions, respectively, which are higher than those of alumina adsorbent for the same ions. Based on these results, the Philippine natural zeolite has a great potential for removing cationic heavy metal species from acid mine drainage (AMD).

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Info:

Periodical:

Key Engineering Materials (Volume 737)

Pages:

407-411

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.737.407

Citation:

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Online since:

June 2017

Authors:

Eleanor Olegario-Sanchez*, Christian Mark Pelicano

Keywords:

Acid Mine Drainage, Heavy Metal, Natural Zeolite

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* - Corresponding Author

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