Asymmetric tubular ceramic membrane: influence of the filter layer deposition time on the membrane morphology

作者：da Silva Mirele Costa^*; Lira Daniel Silveira; de Freitas Normanda Lino; Lira Helio Lucena

来源：Materia-Rio de Janeiro, 2015, 20(2): 335-343.

DOI：10.1590/S1517-707620150002.0034

• asymmetric membrane
• tubular membrane
• deposition
• microfiltration

This paper aims to obtain asymmetric ceramic membranes for application in microfiltration processes and evaluate the influence of the deposition time (5 and 10 s) of a clay dispersion on commercial alumina and bentonite tubular support. The tubular support was characterized by optical and scanning electron microscopy and porosimetry. The asymmetric membrane was characterized by scanning electron microscopy and porosimetry. The results showed porous substrates with thickness of 1092 mu m, average pore diameter of 0.99 mu m and porosity of 39%. The asymmetric membrane was successfully obtained for the evaluated deposition times, being classified for microfiltration processes applications.

• 出版日期2015-6