Influence of the surface structure on the filtration performance of UV-modified PES membranes

Kæselev, Bozena Alicja; Kingshott, Peter; Jonsson, Gunnar Eigil

doi:10.1016/s0011-9164(02)00485-x

Cited by 45 publications

(14 citation statements)

References 3 publications

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“…The predominance of these two processes can be determined by chemical nature and morphology of the polymer . It was observed that the former raised the hydraulic resistance of the membrane while the latter resulted in the loss of the membrane selectivity …”

Section: Resultsmentioning

confidence: 99%

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Asadollahi

Bastani

Mousavi

et al. 2019

J of Applied Polymer Sci

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The purpose of this research is to explain the surface modification of fabricated polyamide reverse osmosis (RO) membranes using UV-initiated graft polymerization at different irradiation times (15, 30, 60, and 90 s) and various acrylamide concentrations (10, 20, and 30 g L −1 ). Also, coating of membranes surface with various concentrations of TiO 2 nanoparticles (10, 20, 30, and 50 ppm) followed by the same UV irradiation times was investigated. After that, the membranes modification was done by grafting of acrylamide blended with TiO 2 nanoparticles via UV irradiation. The characterization of membranes surface properties and their performance were systematically carried out. The results demonstrated the enhanced hydrophilicity of modified membranes and confirmed the presence of acrylamide and nanoparticles on the membranes surface. Acrylamide-grafted membranes could reach to higher water flux than pristine membrane with little reduction in salt rejection. Moreover, TiO 2 -coated membranes indicated enhancement of water flux continuously with increase in nanoparticles concentration and irradiation time and rejection of membranes was slightly decreased at low irradiation times. Also, RO membranes modified simultaneously with acrylamide and TiO 2 nanoparticles under UV irradiation exhibited improved water flux up to 18%, slightly higher rejection, and considerable better fouling resistance compared with pristine one.

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Section: Resultsmentioning

confidence: 99%

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Asadollahi

Bastani

Mousavi

et al. 2019

J of Applied Polymer Sci

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show abstract

“…One can observe that the water permeability and the PEG retention both decrease when the total received energy increases. This simultaneous decline has already been observed for polyethersulfone membranes and was attributed to competition between two phenomena: crosslinking and chain scission [16]. The crosslinking of the PSf chains decreases the water permeability (i.e.…”

Section: Irradiation Of Hollow-fibre Membranes In Absence Of Monomermentioning

confidence: 60%

Application of nanofiltration hollow fibre membranes, developed by photografting, to treatment of anionic dye solutions

Akbari

Desclaux

Rouch

et al. 2007

Journal of Membrane Science

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International audienceNew hollow fibre nanofiltration membranes have been developed by UV-photografting using sodium p-styrene sulfonate (NaSS) as a vinyl monomer. The influence of different parameters on the grafting process such as irradiation time, quantity of received UV energy by the membrane and addition of photoinitiator, on the performances and the characteristics of the membranes were examined. The molecular weight cut-off of the grafted hollow fibres was estimated using different PEG solutions. The grafted membranes were also evaluated for the removal of different anionic dyes (Acid, Direct and Reactive dyes) with an aim to reuse the dye and the water in the process house. It is observed that the newly developed hollow-fibre membranes show performances which are close to that of an “ideal” membrane adapted to the treatment of dye effluents. For example, a negatively charged hollow fibre with a 4500 Da cut-off can be used to concentrate a saline direct red 80 solution with a high flux (15 × 10−5 l h−1 m−2 Pa−1 (15 l h−1 m−2 bar−1)), a high dye rejection (R > 97%) and a salt retention lower than 2%

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“…The charging occurs due to, for instance, dissociation of functional groups, adsorption of ions from solution, and adsorption of polyelectrolytes, ionic surfactants, and charged macromolecules. Generally, membrane materials carry a negative charge or are modified to have a negative charge because natural organic matter in water is negatively charged at neutral pH, due to phenolic and carboxylic functional groups (Kaeselev et al, 2002). A negatively charge membrane, therefore, prevents rapid deposition of foulants on the membrane surface by charge repellence An increase in the flux of a relatively dense membrane at a high pH may result from an increase in membrane hydrophilicity due to the dissociation of the functional groups in the membrane structure (Schaep & Vandecasteele, 2001;Zhao et al, 2005).…”

Section: Surface Pore Charge Isoelectric Pointmentioning

confidence: 99%

Membrane Separation Process in Wastewater Treatment of Food Industry

Muro¹,

Riera²,

Díaz³

2012

Food Industrial Processes - Methods and Equipment

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Influence of the surface structure on the filtration performance of UV-modified PES membranes

Cited by 45 publications

References 3 publications

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Application of nanofiltration hollow fibre membranes, developed by photografting, to treatment of anionic dye solutions

Membrane Separation Process in Wastewater Treatment of Food Industry

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Influence of the surface structure on the filtration performance of UV-modified PES membranes

Cited by 45 publications

References 3 publications

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO2 nanoparticles under UV irradiation for water desalination

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO2 nanoparticles under UV irradiation for water desalination

Application of nanofiltration hollow fibre membranes, developed by photografting, to treatment of anionic dye solutions

Membrane Separation Process in Wastewater Treatment of Food Industry

Contact Info

Product

Resources

About

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination