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Investigating transport properties of nanofiltration membranes by means of a steric, electric and dielectric exclusion model
The transport properties of nanofiltration (NF) membranes are investigated by means of an improved transport model including dielectric exclusion in terms of both Born dielectric effect and image… Expand
Influence of operating conditions on the rejection of cobalt and lead ions in aqueous solutions by a nanofiltration polyamide membrane
The potential use of nanofiltration polyamide membrane for removing cobalt and lead ions from wastewater was investigated. Rejection experiments were conducted with Pb(NO3)2 and Co(NO3)2 in both… Expand
On the structure and rejection of ions by a polyamide membrane in pressure-driven molecular dynamics simulations
Abstract Pressure-driven molecular dynamics simulations were carried out to investigate both structural and transport properties of a sodium chloride solution through a highly cross-linked polyamide… Expand
Degradation of poly(ether sulfone)/polyvinylpyrrolidone membranes by sodium hypochlorite: insight from advanced electrokinetic characterizations.
- Yamina Hanafi, A. Szymczyk, M. Rabiller-Baudry, K. Baddari
- Environmental Science, Medicine
- Environmental science & technology
- 18 November 2014
Poly(ether sulfone) (PES)/polyvinylpyrrolidone (PVP) membranes are widely used in various industrial fields such as drinking water production and in the dairy industry. However, the use of oxidants… Expand
Influence of salts on the rejection of polyethyleneglycol by an NF organic membrane: Pore swelling and salting-out effects
Rejection rate measurements were carried out with a single polyethyleneglycol (PEG) solution and mixed PEG/inorganic salt solutions for a nanofiltration polyamide membrane. It was observed that PEG… Expand
Anomalous dielectric behavior of nanoconfined electrolytic solutions.
- H. Zhu, A. Ghoufi, A. Szymczyk, B. Balannec, D. Morineau
- Medicine, Physics
- Physical review letters
- 7 September 2012
We report an anomalous dielectric effect of electrolytes under cylindrical nanoconfinement. In bulk phase, the decrease in the water dielectric constant (ε) with increasing salt concentration is well… Expand
Analysis of the salt retention of a titania membrane using the “DSPM” model: effect of pH, salt concentration and nature
Abstract Retention measurements with single salt solutions of KCl, LiCl, K2SO4, MgCl2 and MgSO4 were carried out as a function of the permeate flux for a commercial titania membrane close to the… Expand
Contribution of convection, diffusion and migration to electrolyte transport through nanofiltration membranes.
- A. Szymczyk, C. Labbez, P. Fiévet, A. Vidonne, A. Foissy, J. Pagetti
- Medicine, Chemistry
- Advances in colloid and interface science
- 19 March 2003
Transport mechanisms through nanofiltration membranes are investigated in terms of contribution of convection, diffusion and migration to electrolyte transport. A Donnan steric pore model, based on… Expand
Identification of dielectric effects in nanofiltration of metallic salts
Abstract Transport of four metallic salts (CuCl 2 , ZnCl 2 , NiCl 2 and CaCl 2 ) through a polyamide nanofiltration (NF) membrane has been investigated experimentally from rejection rate and… Expand
Characterisation of surface properties of ceramic membranes by streaming and membrane potentials
Abstract The charge of ceramic UF membranes is studied in NaCl and CaCl2 media from streaming potential and membrane potential measurements. The amphoteric behaviour of these materials is observed… Expand