Results 191 to 200 of about 29,360 (241)

Identification of nanofiltration membrane foulants

Water Research, 2007
The Mery-sur-Oise plant (France) has been using nanofiltration (NF) membranes (NF200) to produce safe drinking water since 1999. However, significant fouling has been occasionally observed according to seasonal conditions, even with various pre-treatments including conventional surface water treatment followed by ozonation, acid addition to pH 6.9 ...
Namguk, Her, Gary, Amy, Anne, Plottu-Pecheux, Yeomin, Yoon   +3 more
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Electroviscous Effects in Ceramic Nanofiltration Membranes

ChemPhysChem, 2015
AbstractMembrane permeability and salt rejection of a γ‐alumina nanofiltration membrane were studied and modeled for different salt solutions. Salt rejection was predicted by using the Donnan‐steric pore model, in which the extended Nernst–Planck equation was applied to predict ion transport through the pores.
Farsi, Ali, Boffa, Vittorio, Christensen, Morten Lykkegaard; id_orcid 0000-0002-7671-817X   +2 more
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Hafnia ceramic nanofiltration membranes

Journal of Membrane Science, 2000
Abstract We use the hindered transport theory for neutral solutes and the macroscopic homogeneous electro-transport theory for ions to predict without any adjustable parameters the limiting rejection of, respectively, four neutral molecules and five binary electrolytes by granular porous hafnia nanofilters.
J. Palmeri, P. Blanc, A. Larbot, P. David   +3 more
openaire   +1 more source

Polymer Nanocomposite Membranes for Antifouling Nanofiltration

Recent Patents on Nanotechnology, 2016
Fouling refers to the unwanted and undesirable attachment of biological macromolecules, inorganic, organic matter, and microorganisms on water contact surfaces. Fouling reduces the performance of devices involving these submerged surfaces and is considered the bottle-neck issue for various applications in the biomedical industry, food processing, and ...
Tahseen, Kamal, Nauman, Ali, Abbas A, Naseem, Sher B, Khan, Abdullah M, Asiri   +4 more
openaire   +2 more sources

Physico‐Chemical Characterization of Nanofiltration Membranes

ChemPhysChem, 2007
AbstractThis study presents a methodology for an in‐depth characterization of six representative commercial nanofiltration membranes. Laboratory‐made polyethersulfone membranes are included for reference. Besides the physical characterization [molecular weight cut‐off (MWCO), surface charge, roughness and hydrophobicity], the membranes are also studied
Katleen, Boussu, Jérémie, De Baerdemaeker, Charles, Dauwe, Marc, Weber, Kelvin G, Lynn, Diederik, Depla, Steliana, Aldea, Ivo F J, Vankelecom, Carlo, Vandecasteele, Bart, Van der Bruggen   +9 more
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Organic solvent nanofiltration with Grignard functionalised ceramic nanofiltration membranes

Journal of Membrane Science, 2014
Abstract In this paper the use of functionalised ceramic nanofiltration membranes in solvent filtration is described. The membranes were grafted using a novel method for surface modification based on Grignard chemistry. Commercially available 1 nm TiO 2 membranes were differently functionalised with a series of alkyl groups (methyl, pentyl, octyl ...
Rezaei Hosseinabadi, S., Wyns, K., Meynen, Vera, Carleer, R., Adriaensens, P., Buekenhoudt, A., Van der Bruggen, B.   +6 more
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Membranes semi-perméables - Membranes de nanofiltration

Caractérisation et propriétés de la matière, 2000
Une membrane de nanofiltration est une membrane artificielle poreuse souvent porteuse d’une charge electrique fixee . Les pores ont un diametre de l’ordre du nanometre (d’ou le nom de nanofiltration). Ils sont a la limite des micropores et des mesopores. Nota : Le lecteur pourra se reporter a l’article Membranes semi-permeables- Generalites
openaire   +1 more source

Separation potential of nanofiltration membranes

Desalination, 1990
Abstract Nanofiltration has two interesting features: 1. - a fractionation capacity for different organic components in aqueous solutions, the ‘cut-off’ being in the range of 300 kg/kmol molecular weight 2. - the potential of realizing the Donnan-effect with respect to anions of different valency.
R. Rautenbach, A. Gröschl
openaire   +1 more source

Microcystins removal by nanofiltration membranes

Separation and Purification Technology, 2005
Abstract Microcystins produced by cyanobacterial blooms have been extensively found in water reservoirs used for drinking water abstraction and many conventional water treatment technologies have been reported to be ineffective for removing them. Safe barriers against microcystins in drinking water, are therefore, needed.
M TEIXEIRA, M ROSA
openaire   +1 more source

Nanofiltration membrane technologies

2022
Tina Chakrabarty, Arnab Kanti Giri, Supriya Sarkar   +2 more
openaire   +1 more source