| Preparation and Characterization of Single Layer
Ultra Filtration Alumina Membrane Directly over
Porous Clay-Alumina Tubular and Capillary
Support for Textile Effluent Treatment |
Sandeep Sarkar*, Sourja Ghosh, Priya Banerjee, André Larbot1, Sophie Cerneaux1,
Sibdas Bandyopadhyay and Chiranjib Bhattacharjee2
pages : 197-204
DOI : 10.1080/0371750X.2014.882246 |
| Abstract |
| Clay-alumina porous tubular supports of 8/6 mm for outside diameter/inside diameter (OD/ID) were prepared by
extrusion and sintering at 1450oC for 110 min to obtain an average pore size of 1 m and porosity of 40%. Slip
casting slurry was prepared by peptization of boehmite (AlO(OH)) powder with 1.5 N nitric acid and mixing it with
-Al2O3 powder of 40 nm particle size along with PVA and PEG in determined weight percentage. Clay alumina
porous support tubes of 3.1/1.9 and 8/6 mm (OD/ID) were coated with the slip casting slurry and sintered at 550oC
for 60 min to obtain -alumina membrane directly over the supports in a single step. The membrane layer prepared
over both the support tubes were without any intermediate layer. The membranes presented a pore diameter
distribution centered at 7.0 nm on 3.1/1.9 mm (OD/ID) and 5.5 nm on 8/6 mm (OD/ID) supports, which was in
ultrafiltration (UF) range. The prepared UF membranes were studied for treatment of bio-treated synthetic and real
textile effluent in the side stream mode. About 98% decolorization of synthetic dye solution and 95.6% colour
removal of real textile effluent were obtained by the combined effect of UF membrane and bioreactor.
[Keywords: Crack-free, Single layer, Ultrafiltration, Clay-alumina, Support tube, Textile effluent] |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
