Protein fouling behavior of carbon nanotube/polyethersulfone composite membranes during water filtration

Celik, Evrim; Liu, Lei; Choi, Heechul

doi:10.1016/j.watres.2011.07.036

Cited by 164 publications

(99 citation statements)

References 27 publications

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“…The effective reduction in the adsorbed protein amount occurred since BSA was excluded by the tight hydration layer on the membrane surface. 15 In all the membranes, the protein adsorption at dynamic condition was higher than the static one. It might be due to the stirring condition in the dynamic phase that forced the protein molecules to move inside the membrane pores.…”

Section: Antifouling Properties Of Membranesmentioning

confidence: 85%

“…13,14 Zirconium oxide (ZrO 2 ), titanium oxide (TiO 2 ), zeolite, mesoporous silica (SiO 2 ) and carbon nanotubes (CNTs) are some of the examples of inorganic llers that have been previously used to fabricate hybrid UF membranes with improved antifouling capacity. [15][16][17][18] Among these materials, CNTs have gained signicant attention whether in laboratories or industries, owing to their rapid mass transport behavior caused by large surface area, in combination with excellent mechanical, electrical and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

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An acid functionalized MWCNT/PVP nanocomposite as a new additive for fabrication of an ultrafiltration membrane with improved anti-fouling resistance

et al. 2015

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Membrane fouling is one of the main challenges encountered in ultrafiltration (UF) processes and the use of nanoparticles for the improvement of UF performance is a recent trend in membrane technology. In this study, in order to improve surface characteristics of polyethersulfone (PES)-based membranes for greater resistance against biofouling, PES was incorporated with a new type of nanocomposite (NC) in which the NC could be synthesized by blending acid functionalized multiwalled carbon nanotubes (f-MWCNT) with polyvinylpyrrolidone (PVP) in dimethylformamide (DMF). The chemistry of the NCs embedded within the PES membrane matrix was analysed by FTIR, whereas the fabricated membranes were characterized by FESEM, contact angle, water absorption tests, surface profile studies and their filtration performances with respect to pure water permeation, antifouling resistance against proteins and flux recovery rate. The results revealed that, compared to the pristine PES membrane, the antifouling ability of the PES membrane incorporated with f-MWCNT/PVP NC is greater, recording 81.7% flux recovery and 80.2% total resistance (>76% were reversible one). The protein separation results indicated that, the NCs based membrane was able to reject 93.4%, 74.7%, 59.4% and 28.5% for bovine serum albumin (66 kDa), pepsin (34.6 kDa), trypsin (20 kDa) and (14.6 kDa), respectively.

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Section: Antifouling Properties Of Membranesmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

An acid functionalized MWCNT/PVP nanocomposite as a new additive for fabrication of an ultrafiltration membrane with improved anti-fouling resistance

et al. 2015

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“…On the other hand, use of nanotechnology for membrane fabrication is a new promising method to improve membrane performance through incorporation of nanomaterials [15]. The addition of nanoparticles can alter the membrane morphology, improve permeability and reduce fouling properties of membranes, due to their high specific surface area, chemical stability and feasible functionalization [16,17]. Nanocomposite membranes can be improved by assembling nanoparticles into membranes or blending them with organic or inorganic additives [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of MWCNT Filler on Properties and Flux of Chitosan/ PEG based Nanocomposites Membranes

2018

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Abstract. Biopolymer are expected to be environmentally compatible and to have great potential application as membranes material. The chitosan-poly (ethylene glycol)/PEG based composite membranes was successfully synthesized via inversed phase method. The effect of multiwalled carbon nanotubes (MWCNT) as nanofiller on properties and performances of composite membranes were intensively evaluated. The membrane was prepared by mixing of chitosan and PEG solutions at the same composition ratio while MWCNT amount in the mixture was varied. The synthesized membrane was characterized by means of FTIR spectroscopy, scanning electron microscopy (SEM), contact angle, and tensile strength measurement. The performance of composite membrane on filtration was evaluated in term of flux (permeability) and rejection (rejection) tests. The results showed that the optimum volume ratio of composite membrane solution was found at 30:10:7.5 for chitosan/ PEG/ MWCNT, respectively, as indicated by the largest flux. Insertion of MWCNT nanofiller notably enhanced hydrophilicity, porosity, and mechanical properties of composites membranes that are confirmed by contact angle, SEM images and elongation forces value, respectively. The MWCNT nanofiller remarkably increased both of flux and rejection of composite membranes up to 60 Lm 2 h -1 and 96%, respectively. The remarkable enhancement of composite membrane performance is attributed to the effective interaction of MWCNT with polymeric matrix.

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“…24 Molecular dynamics simulations on functionalized single-walled nanotubes have shown that presence of charges at the entrance of the pores function as a barrier and helps in prevention of passage of ions thus enhancing the ion rejection, with theoretical predictions being many times better than even the existing separation technologies. 25 However, it has also been reported that protein fouling behavior of PS composite membranes by bovine serum albumin and ovalbumin has been drastically reduced due to presence of nanotubes, 26 whereas modification on the CNT surface with 5-isocyanato-isophthaloyl chloride enhances the protein adsorption on the membrane. 27 One of the major concerns of membrane based separations is biofouling that leads to reduced water flux and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Polysulfone‐based composite membranes with functionalized carbon nanotubes show controlled porosity and enhanced electrical conductivity

Mangukiya

Prajapati

Kumar

et al. 2016

J of Applied Polymer Sci

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Composite membranes of functionalized (-COOH, -CONH 2 , -N 3 ) carbon nanotubes/polysulfone (CNT/PS) synthesized by the phase-inversion method show unique properties with respect to surface characteristics and the selective separation of metal ions from aqueous solution. Apart from the reduction in the pore size depending on the type of functionalities on the nanotubes, the pure water permeation could reach up to as high as 600 L m 22 h 21 (LMH) at reduced pressures and could be due to the functionalized tips of the nanotubes on the membrane surface resulting from the phase inversion process used for the membrane fabrication. The membranes were characterized by small angle neutron scattering (SANS) to confirm the uniform distribution of the nanopores and the surface morphology of the membranes. Results show that rejection of Cu(II) was better than Pb(II) depending on the surface functionality. Interestingly, these membranes also showed enhanced conductivities in the range of 1.0 3 10 22 S cm 21 , the conductivity depending on the type of functionality on the nanotubes, thus confirming the presence of functionalized nanotubes tips on the membrane surface.

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Protein fouling behavior of carbon nanotube/polyethersulfone composite membranes during water filtration

Cited by 164 publications

References 27 publications

An acid functionalized MWCNT/PVP nanocomposite as a new additive for fabrication of an ultrafiltration membrane with improved anti-fouling resistance

An acid functionalized MWCNT/PVP nanocomposite as a new additive for fabrication of an ultrafiltration membrane with improved anti-fouling resistance

Effect of MWCNT Filler on Properties and Flux of Chitosan/ PEG based Nanocomposites Membranes

Polysulfone‐based composite membranes with functionalized carbon nanotubes show controlled porosity and enhanced electrical conductivity

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