Consulta: creatorFacets:"Pontie, Maxime"
Registros recuperados: 2
Data/hora: 16/06/2024 16:56:15

Performances of dead-end ultrafiltration of seawater: from the filtration and backwash efficiencies to the membrane fouling mechanisms
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Masse, Anthony; Arab, Oumnia; Sechet, Veronique; Jaouen, Pascal; Pontie, Maxime; Sabiri, Nour-eddine; Plantier, Severine.
The present work investigates the fouling mechanisms of PVDF hollow fibre membrane (0.03 μm) during the dead end ultrafiltration at a fixed permeate flux (outside to inside configuration) of complex synthetic seawater composed by humic acids, alginic acids, inorganic particles and numerous salts at high concentrations. Short term ultrafiltration experiments at 100 L.h-1.m-2 show that the optimal specific filtered volume seems to be equal to 50 L.m-2. A residual fouling resistance equal to 2.1010 m-1 is added after each cycle of filtration during 8h of ultrafiltration at 100 L.h-1.m-2 and 50 L.m-2. Most of the fouling is reversible (80%). Organics are barely (15% of humic acids) retained by the membrane. Backwash efficiency drops during operation which...
Tipo: Text
Palavras-chave: Seawater; Ultrafiltration; Fouling membrane; Alginic acids; Humic acids.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00286/39716/38172.pdf

Impact of granular filtration on ultrafiltration membrane performance as pre-treatment to seawater desalination in presence of algal blooms
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Sabiri, Nour-eddine; Sechet, Veronique; Jaouen, Pascal; Pontie, Maxime; Masse, Anthony; Plantier, Severine.
To mitigate fouling of the ultrafiltration (UF) membrane and improve permeate quality, we coupled granular filters (GF) with UF membrane as a pre-treatment for reconstituted seawater in the presence of algal bloom. Mono and bilayer granular filtrations were led at a mean velocity of 10 m h(-1) over a 7-hour period. Both GF gave the same algal cell retention rate (similar to 63%) after 7 hours of filtration. Turbidity reduction rate was 50% for the monolayer filter and 75% for the bilayer filter. Resulting organic matter removal rate was 10% for the monolayer filter and 35% for the bilayer filter. Dissolved organic carbon removal was low (20%) with the bilayer filter and non-existent with the monolayer filter. GF-coupled UF reduced humic acids in the...
Tipo: Text
Palavras-chave: Algal bloom; Fouling; Granular filtration; Pre-treatment; Seawater; Ultrafiltration.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00442/55315/56845.pdf