Development of novel charged surface modifying macromolecule blended PES membranes to remove EDCs and PPCPs from drinking water sources

Rana, Dipak; Narbaitz, Roberto; Garand-Sheridan, Anne-Marie; Westgate, Amy; Matsuura, Takeshi; Tabe, Shahram; Jasim, Saad

doi:10.1039/c4ta01530d

Cited by 139 publications

(54 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To reduce the problem of initial fouling different approaches for surface hydrophilization have been investigated such as copolymerization or grafting with hydrophilic monomers [8][9][10][11][12][13][14], blending using hydrophilic polymers [15][16][17][18][19][20], and, finally, chemical modification of the membrane polymer [21].…”

Section: Polymers 2015 7mentioning

confidence: 99%

Biocatalytic Self-Cleaning Polymer Membranes

et al. 2015

View full text Add to dashboard Cite

Polymer membrane surfaces have been equipped with the digestive enzyme trypsin. Enzyme immobilization was performed by electron beam irradiation in aqueous media within a one-step method. Using this method, trypsin was covalently and side-unspecific attached to the membrane surface. Thus, the use of preceding polymer functionalization and the use of toxic solvents or reagents can be avoided. The resulting membranes showed significantly improved antifouling properties as demonstrated by repeated filtration of protein solutions. Furthermore, the biocatalytic membrane can be simply "switched on" to actively degrade a fouling layer on the membrane surface and regain the initial permeability. The membrane pore structure (pore size and porosity) was neither damaged by the electron beam treatment nor blocked by the enzyme loading, ensuring a stable membrane performance.

show abstract

Section: Polymers 2015 7mentioning

confidence: 99%

Biocatalytic Self-Cleaning Polymer Membranes

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Nanomaterials and additives have also been explored more recently, however further investigations are required due to safety and environmental concerns about these new materials. [13][14][15][16][17] An alternative approach consists of modifying the surface of polymers or membranes, such as PES or PES-based membranes with ultrathin molecular coatings in order to improve their antifouling properties, while at the same time preserving their desirable mechanical, thermal resistant, and chemical resistant properties. In this work, we describe how surface modification strategies can indeed be leveraged in order to reduce protein accumulation on PES membranes without compromising the mechanical integrity of the membrane.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Antifouling Properties of Carbohydrate Coated Poly(ether sulfone) Membranes

Angione

Duff

Bell

et al. 2015

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Polyethersulfone membranes (PES) were modified with biologically active monosaccharides and disaccharides using aryldiazonium chemistry as a mild, one step, surface modification strategy. We previously proposed the modification of carbon, metals, and alloys with monosaccharides using the same method; herein we demonstrate modification of PES membranes and the effect of chemisorbed carbohydrate layers on their resistance to biofouling. Glycosylated PES surfaces were characterized using spectroscopic methods and tested against their ability to interact with specific carbohydratebinding proteins. Galactose, mannose and lactose modified PES surfaces were exposed to Bovine Serum Albumin (BSA) solutions to assess unspecific protein adsorption in the laboratory and were found to adsorb significantly lower amounts of BSA compared to bare membranes. The ability of molecular carbohydrate layers to impart antifouling properties was further tested in the field via long term immersive tests at a wastewater treatment plant. A combination of ATP content assays, infrared spectroscopic characterization and He-ion microscopy (HIM) imaging were used to investigate biomass accumulation at membranes. We show that, beyond laboratory applications and in the case of complex aqueous environments that are rich in biomass such as wastewater effluent, we observe significantly lower biofouling at carbohydrate modified PES than at bare PES membrane surfaces.

show abstract

“…Removal mechanism such as size exclusion, charge interaction, hydrophobic interaction/adsorption as well as fouling mechanism of membranes has been altered through various surface modification methods in earlier studies 18,19,[22][23][24][25] . Loose UF membranes have also been surface modified to enhance the selectivity by making the pore sizes smaller after modification and /or adding charged coating materials to improve selectivity by charge repulsion 18,38 .…”

Section: 4mentioning

confidence: 99%

“…In most cases, the main focus of surface modification of polymeric membranes involves management of desired interactions between membrane surface and solution components that contribute significantly to membrane fouling. The other aim is to improve the selectivity and/or formulate novel separation functions [18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Rejection of Caffeine and Carbamazepine by Surface-Coated PVDF Hollow-Fiber Membrane System

Ojajuni

Holder

Cavalli

et al. 2016

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This research investigates surface coated ultrafiltration (UF) polyvinylidene fluoride (PVDF) hollow fiber membrane for the removal of organic micropollutants (OMPs) in water. Coating of PVDF membranes with Poly (1-phenylethene-1,2-diyl) -Polystyrene solution through physical adsorption was carried out under two modes, 'dipped' and 'sprayed'. The performance of the coated membrane in the rejection of model organic micropollutants, caffeine and carbamazepine spiked in deionised water (at 300 µg/L and 500 µg/L), correlated with the coating methods used. Dipped coated membrane showed a better removal of recalcitrant hydrophobic carbamazepine compared to the 'sprayed' coated membrane; while for both methods of coating, removal of caffeine was relatively insignificant. Inferably, hydrophobic interaction and size exclusion may be the major removal mechanism involved in the rejection by the coated membranes. The coating layer potentially enhanced reduction of pore size with resulting effect on membrane permeability and providing more sites for possible hydrophobic interaction.

show abstract

Development of novel charged surface modifying macromolecule blended PES membranes to remove EDCs and PPCPs from drinking water sources

Abstract: The aim of this study was to develop novel surface-modified poly(ether sulfone) (PES) ultra-filtration (UF) membranes for removal of endocrine disrupting chemicals (EDCs) and pharmaceutical and personal care products (PPCPs).

Cited by 139 publications

References 37 publications

Biocatalytic Self-Cleaning Polymer Membranes

Biocatalytic Self-Cleaning Polymer Membranes

Enhanced Antifouling Properties of Carbohydrate Coated Poly(ether sulfone) Membranes

Rejection of Caffeine and Carbamazepine by Surface-Coated PVDF Hollow-Fiber Membrane System

Contact Info

Product

Resources

About