ANOVA Design for the Optimization of TiO2 Coating on Polyether Sulfone Membranes

Abstract

There have been developments in the optimization of polyether sulfone (PES) membranes, to provide antifouling and mechanically stable surfaces which are vital to water purification applications. There is a variety of approaches to prepare nanocomposite PES membranes. However, an optimized condition for making such membranes is in high demand. Using experimental design and statistical analysis (one-half fractional factorial design), this study investigates the effect of different parameters featured in the fabrication of membranes, as well as on the performance of a nanocomposite PES/TiO2 membrane. The optimized parameters obtained in this study are: exposure time of 60 s, immersion time above 10 h, glycerol time of 4 h, and a nonsolvent volumetric ratio (isopropanol/water) of 30/70 for PES and dimethylacetamide (PES-DMAc) membrane and 70/30 for PES and N-methyl-2-pyrrolidone (PES-NMP) membrane. A comparison of the contributory factors for different templating agents along with a nanocomposite membrane control, revealed that F127 triblock copolymer resulted in an excellent antifouling membrane with a higher bovine serum albumin rejection and flux recovery of 83.33%.

Equilibrium and Kinetics Studies of Metal Ions Biosorption on Alginate Extracted from Marine Red Algae Biomass (Callithamnion corymbosum sp.)

“…Among the numerous methods that can be used for metal ion removal from aqueous effluents (such as chemical precipitation, membrane separation, ions exchange, adsorption, etc.) [ 5 , 6 , 7 , 8 , 9 ], biosorption has several unique advantages, which are very important from a practical point of view. Thus, the possibility of using a large number of solid materials of biologic origin, which are cheap and readily available in most regions of the world, as well as having flexibility and adaptability to various experimental conditions [ 10 , 11 , 12 ], are just two advantages that highlight the importance of biosorption in treatment of aqueous effluents containing metal ions.…”

Impacts of Green Synthesis Process on Asymmetric Hybrid PDMS Membrane for Efficient CO2/N2 Separation

“…To improve the separation performance of membranes, it has been suggested that different organic or inorganic materials, such as fluorescent material (TPE) [ 8 ], metal nanoparticles [ 9 ], graphene oxide (GO) [ 10 ], carbon nanotubes (CNTs) [ 11 ], metal–organic frameworks (MOFs) [ 12 ], TiO 2 [ 13 , 14 ] and silica [ 15 , 16 ] are incorporated. Compared with other materials, silica is a common and low-cost functional filler for organic–inorganic hybrid membranes.…”

Removal of Rhodamine B from Water Using a Solvent Impregnated Polymeric Dowex 5WX8 Resin: Statistical Optimization and Batch Adsorption Studies

“…Membrane filtration, flocculation, biological treatments, photocatalytic oxidation, and adsorption [6][7][8][9][10] are some of the commonly used textile effluent treatment processes. On the other hand, the application of polymer materials in water treatment and selective sequestration has impressively developed in the last decades, with the production of novel materials and composites, post-polymerization modifications, introduction of functional groups, and development of supramolecular assemblies and nanomaterials [11][12][13][14][15][16]. However, these methods have their own limitations and efficiencies in terms of cost effectiveness.…”