Polymeric membrane modification using SPEEK and bentonite for ultrafiltration of dairy wastewater

Abstract

The different polymeric membrane materials were fabricated using modifiers such as sulfonated poly(ether ether ketone) (SPEEK) and bentonite for effective ultrafiltration of proteins from dairy effluent. Polyvinylidene fluoride (PVDF), polyethersulfone (PES), polyetherimide (PEI), polyamide‐imides (PAI), cellulose acetate (CA), and polyphenylsulfone (PPSU) were selected for modification. Membrane morphology and functional group analysis were characterized using scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR). Pure water permeability (64.66 × 10−9 m/s kPa) was higher for the PES/SPEEK/bentonite membrane when compared with other polymeric membranes. Contact angle (54.05°) value was lower for CA/SPEEK/bentonite membranes and which indicates that hydrophilicity has got enhanced. The membrane performance was tested using model dairy wastewater by ultrafiltration under longer run mode. Further it was evaluated using resistance in series model. This study infers that modification of membranes using charged SPEEK polymer and nanofiller as bentonite can be used to alleviate the fouling in the treatment of dairy wastewater. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41651.

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO2 incorporated PES mixed matrix membranes

“…PES polymer was dried initially in a hot air oven maintained at 80 °C for 8 h. In this study, pore formers such as PEG, PEI, SPEEK and ZnCl 2 were chosen. The preparation and characterization of SPEEK and nano titania are discussed elsewhere . The proton conductivity value and degree of sulfonation of SPEEK was found to be 7.57 × 10 ‐3 S cm ‐1 and 77%, respectively.…”

“…The preparation and characterization of SPEEK and nano titania are discussed elsewhere. 19,20 The proton conductivity value and degree of sulfonation of SPEEK was found to be 7.57 × 10 -3 S cm -1 and 77%, respectively. The as-prepared TiO 2 nanoparticles particles were in the size range 17.64 to 30.14 nm and the diffraction pattern of TiO 2 was anatase form.…”

Preparation and characterization of TiO2-sulfonated polymer embedded polyetherimide membranes for effective desalination application

“…Finally, it was dried for 24 h in a hot air oven maintained at a temperature of 80°C. The protocol for the synthesis of sulfonated polyetherketone and its characterization is well discussed by both Pagidi et al [24] and Jaafar et al [25]. SPES was characterized using hydrogen-nuclear magnetic resonance ( 1 HNMR) spectroscopy and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy.…”

Preparation and characterization of modified polyphenylsulfone membranes with hydrophilic property for filtration of aqueous media

“…Despite the aforementioned significant properties of PPSU, there have been a few numbers of studies concerning the preparation and characterization of flat‐sheet PPSU membranes for liquid filtration. The publications on liquid filtration using this kind of membrane generally focused on pervaporation, nanofiltration of solvents, ultrafiltration (UF), and adsorption‐enhanced UF …”