ABSTRACT
Membrane supports were synthesized from spent siliceous adsorbent material (Hyflow) by incorporating in α-alumina. The properties of these supports were compared with those made using commercial siliceous material (Hyflow) incorporated in α-alumina. In the thermal treatment, both the spent as well as commercial Hyflow materials were heated up to 500°C. These membrane supports were characterized by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and chemical stability. Optimized supports were coated with γ-alumina to reduce pore diameter to 50–60 nm. Nanofiltration of Reactive Red 120 dye was studied using synthesized membranes. The results obtained through recycle and reuse of the spent material were positive.
Acknowledgments
This work was supported by the Science and Engineering Research Board (SERB) of the Department of Science and Technology, Government of India, as well as by VA Tech Wabag Limited, India.