نتایج جستجو برای: pes membranes
تعداد نتایج: 97505 فیلتر نتایج به سال:
In this study, RuO2-embedded PES membrane was prepared and it used for protein separation. The antifouling properties of the fabricated composite membranes were also investigated using bovine serum albumin (BSA) as solution. mean roughness increased proportionally by introducing RuO2 particles. porosity higher than that pristine membrane. On other hand, has smaller average pore size after addit...
Biofilm is a significant cause for membrane fouling. Antibacterial-coated surfaces can inhibit biofilm formation by killing bacteria. In this study, polyethersulfone (PES) microfiltration membrane was photografted by four antibiotic quaternary ammonium compounds (QACs) separately, which were synthesized from dimethylaminoethyl methacrylate (DMAEMA) by quaternization with butyl bromide (BB), oct...
0079-6425/$ see front matter 2012 Elsevier Lt http://dx.doi.org/10.1016/j.pmatsci.2012.07.002 ⇑ Corresponding author. Tel.: +86 28 85400453; E-mail addresses: [email protected], zhao Significant progress has been achieved in the last years on the modification of polyethersulfone (PES) membranes. Many articles and reviews have been written on the development in the area of PES membrane modif...
The use of polyethersulfone (PES), an excellent but highly hydrophobic thermoplastic, as a matrix material for ionexchange membranes was investigated. To make PES ion-exchangeable, sulfonate groups were introduced to the polymer chains by sulfonation reaction with chlorosulfonic acid. The degree of sulfonation of sPES was estimated to be 21%. Preliminary experiments investigated the effect of p...
Nanofibrous ultrafilter of nylon6.12/chitosan@Poly ether sulfone (N6.12/CS@PES) membrane were fabricated by chitosan casted PES and coated with nylon6.12 thin layer using electrospinning technique for dye rejection. The membranes characterized scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD). capacity the to reject both cationic anioni...
Commercialized silicoaluminophosphate-34 (SAPO-34) zeolite was successfully blended in the polyethersulfone (PES) polymer to prepare mixed matrix membranes (MMMs). The CO2 permeability and CO2/CH4 ideal selectivity of 30 wt% SAPO-34/PES MMM at 0.1 MPa 35 °C were 15 barrer 51, respectively. In our previous paper, PES MMMs using laboratory-made SAPO-34 provided both higher than neat membrane. per...
Biofouling is one of the most serious problems in membrane filtration systems for water treatment. An easily applicable antimicrobial finish polyethersulfone (PES) filter membranes shown by derivatizing an approved chlorin photosensitizer drug with adhesive ortho-catechol functionalities as known from l-3,4-dihydroxyphenylalanin (Dopa) residues marine mussel glues. The chemical structure second...
the role of polymeric additives such as pvp and peg is studied with respect to the morphology of pes porous layer as a sublayer of nanofiltration composite membranes based on pes/pa. results show that by phase inversionprocess of quaternary systems comprised of four components of polymer/solvent/non-solvent/additive and the diffusion of intertwined polymers some changes occur in membrane morpho...
In this study, polyethersulfone (PES) hollow fiber membranes (HFM) were fabricated with different weight percentage (wt. %) of polymer at 16 wt. %, 18 % and 20 in order to study the impact percentages on membrane properties its dye rejection performance. Microfiltration HFM by using laboratory dry-wet spinning method. improve pore structure membrane, 3 (PVP) 8000 M.W. was added dope solution. A...
Catalytic membranes, as a combination of heterogeneous advanced oxidation and membrane technology reaction systems, have important application prospects in the treatment dyes other organics. In practical applications, it is still challenging to construct catalytic membranes with excellent removal efficiency fouling mitigation. Herein, molybdenum disulfide-iron oxyhydroxide (MoS2-FeOOH) was fabr...
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