Porous Anisotropic Alumina Ceramic Membrane: Preparation and Characterization

Abstract:

Through different field of application and productive growth that membrane technology has been presented in the last years, the aim of this work is to prepare and characterize anisotropic porous ceramic membrane. The membrane were done with alumina, prepared by combustion reaction in microwave oven from urea as combustible and after deposited on support based on a commercial alumina. The results showed that it was obtained α-alumina as unique phase with average agglomerate size of 10µ and surface area of 33 m²/g. The alumina morphology was constituted by pre-sintering particles with hard agglomerates and/or aggregates. In relation to the membranes, it was observed a longitudinal section without cracks and uncovers support surface, also it can be observed grain formation well distributed and a layer of alumina with approximately 35.25µm. In relation to the permeate flux, the membrane presented initially values relatively high that is decrease with the permeation time, due to adsorption of water in the internal surface of the pores of the membrane, experiencing a decrease in size.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 1485-1489
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.1485
• Online since: August 2012
• Authors: Valéria Vital Cordeiro, Mirele Costa da Silva, Hélio Lucena Lira, Normanda Lino de Freitas, Ana Cristina Figueiredo de Melo Costa
• Keywords: Alumina, Asymmetric Ceramic Membrane, Permeate Flow

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