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New porous ceramics for tangential filtration

2001; Elsevier BV; Volume: 25; Issue: 1-3 Linguagem: Inglês

10.1016/s1383-5866(01)00066-1

1873-3794

Sk. Abdur Rakib, M. Sghyar, M. Rafiq, A. Larbot, L. Cot,

Urban Stormwater Management Solutions

The aim of the present work is to obtain ultrafiltration membranes of KTiOPO4 (KTP). Clay A and granitic sand S ceramics were used as porous supports. The choice of these materials has been dictated by their natural abundance (low price) and their thermal stability. The performances of two ultrafiltration membranes, 1 (A/TiO2/KTP) and 2 (S/TiO2/KTP) were compared in terms of thickness, pore diameter and water flux. The water permeability measured for these two composite membranes is 40 and 50 l h−1 m−2 bar−1, respectively. The thickness is less than 800 nm, and the pore diameters are centred near 4.5 and 4 nm, respectively, for a firing temperature equal to 400°C. These composite membranes can be used in tangential ultrafiltration.