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New ceramic microfiltration membranes from Tunisian natural materials: Application for the cuttlefish effluents treatment

New microfiltration membranes from Tunisian natural materials are obtained using ceramic method. Paste from Tunisian silty marls refereed (M 11) is extruded to elaborate a porous tubular configuration used as supports. The support heated at 1190 °C, shows an average pore diameters and porosity of ab...

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Published in:Ceramics international 2009-01, Vol.35 (1), p.55-61
Main Authors: Khemakhem, S., Larbot, A., Ben Amar, R.
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description New microfiltration membranes from Tunisian natural materials are obtained using ceramic method. Paste from Tunisian silty marls refereed (M 11) is extruded to elaborate a porous tubular configuration used as supports. The support heated at 1190 °C, shows an average pore diameters and porosity of about 9.2 μm and 49%, respectively. The properties in term of mechanical and corrosion resistances are very interesting. The elaboration of the layer based on Tunisian clay refereed (JM 18) is performed by slip-casting method. The heating treatment at 900 °C leads to an average pore size of 0.18 μm. The water permeability determined of this membrane is 867 l h −1 m −2 bar −1. This membrane can be used for crossflow microfiltration. The application to the cuttlefish effluent clarification shows an important decrease of turbidity (inferior to 1 NTU) and chemical organic demand (COD) values (retention rate of about 65%). So, it seems that the prepared membrane is suitable for such wastewater treatment.
doi_str_mv 10.1016/j.ceramint.2007.09.117
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subjects Ceramic
Chemical Sciences
Cuttlefish effluent
D. Clay
E. Membrane
Material chemistry
Microfiltration
Silty marls
title New ceramic microfiltration membranes from Tunisian natural materials: Application for the cuttlefish effluents treatment
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