Synthesis of novel titania membrane support via combustion synthesis route and its application in decolorization of aqueous effluent using microfiltration

• Published in: Clean technologies and environmental policy Vol. 18; no. 1; pp. 139 - 149
• Main Authors: Doke, Suresh M., Yadav, Ganapati D.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2016; Springer Nature B.V
• Subjects: Aqueous solutions; Catalysis; Ceramics; Chemical oxygen demand; Chemical synthesis; Clean technology; Combustion synthesis; Decoloring; Earth and Environmental Science; Effluents; Environment; Environmental Economics; Environmental Engineering/Biotechnology; Environmental policy; Industrial and Production Engineering; Industrial Chemistry/Chemical Engineering; Membranes; Microfiltration; Nanocrystals; Nanoparticles; Original Paper; Permeability; Polyvinyl alcohol; Pore size; Porosity; Sustainable Development; Titanium dioxide; Ink effluent; Microfiltration; Combustion; Titania; Inorganic membrane
• ISSN: 1618-954X; 1618-9558
• DOI: 10.1007/s10098-015-1000-3

A simple preparation method for synthesizing porous ceramic membrane support was developed from nanocrystalline titania powder using solution combustion synthesis. Different characteristics of combustion-synthesized titania membranes such as surface morphology, porosity, pore size, pure water and solvent permeability were measured using advanced characterization techniques. Novel titania membrane support sintered at 450 °C showed mean pore diameter 0.33 µm, porosity of about 77.5 %, and pure water permeability 20.31 × 10 −5  L h −1  m −2  Pa −1 . Combustion-synthesized titania membrane supports were used in decolorization of commercial dye-based ink effluent using microfiltration. Effects of different parameters such as pressure, initial concentration of ink effluent, and pH on decolorization of ink effluent were studied. Furthermore, combustion-synthesized titania membranes operated at lower pressure (1 × 10 5  Pa) showed significant color removal (>99 %) and moderate chemical oxygen demand reduction with lower membrane fouling during decolorization of water-based ink effluent. Graphical Abstract