Alumina Residue Characterization to Produce Tubular Ceramic Membranes

Iliana Oliveira Guimarães; Hélio Lucena Lira; Sidinei Kleber da Silva; Suellen Lisboa Dias; Rosa do Carmo de Oliveira Lima

doi:10.4028/www.scientific.net/MSF.727-728.1508

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Alumina Residue Characterization to Produce Tubular Ceramic Membranes

Abstract:

ndustrial wastes recycling become attractive due to raw materials economy (sustainability) and environmental issues. This research objective was to characterize a residue generated during the alumina calcination process (electrostatic precipitator dust), to be applied on the development of tubular ceramic membranes. In this context, two samples were analyzed, a crude residue (sample A) as supplied by the industry and other calcined residue (sample B). As verified by X-ray fluorescence spectroscopy by dispersive energy (XDE), the samples A and B showed a high content of alumina in chemical compositions, both close to 96%. Gibbsite and α-alumina crystalline phases were identified by X-ray diffraction (XRD) in the samples. At scanning electron microscopy (SEM) images, could be observed agglomerates of particles with asymmetric shapes and a wide particle size distribution like was confirmed by laser diffraction, which showed that the particles diameters remained almost unchanged after calcination at 700°C. Results revealed no significant differences between samples characteristics, indicating that the crude and calcined residues could be used to prepare ceramic membranes.

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Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

1508-1513

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1508

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Online since:

August 2012

Authors:

Iliana Oliveira Guimarães, Hélio Lucena Lira, Sidinei Kleber da Silva, Suellen Lisboa Dias, Rosa do Carmo de Oliveira Lima

Keywords:

Alumina Residue, Ceramic Membrane, Characterization

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