"4"^^ . "240" . "St\u0159ihov\u00E9 nap\u011Bt\u00ED na povrchu ploch\u00E9 keramick\u00E9 ultrafiltra\u010Dn\u00ED membr\u00E1ny je bylo m\u011B\u0159eno v ultrafiltra\u010Dn\u00EDm modulu. V prvn\u00EDm p\u0159\u00EDpad\u011B bylo st\u0159ihov\u00E9 nap\u011Bt\u00ED m\u011B\u0159eno na desce z plexiskla, kter\u00E9 nahrazovalo membr\u00E1nu, a na povrchu deskov\u00E9 membr\u00E1ny bez p\u0159\u00EDtomnosti \u010D\u00E1stic v kapalin\u011B s c\u00EDlem prozkoumat vliv permeace. Ve druh\u00E9m p\u0159\u00EDpad\u011B bylo st\u0159ihov\u00E9 nap\u011Bt\u00ED m\u011B\u0159eno na povrchu membr\u00E1ny v pr\u016Fb\u011Bhu ultrafiltrace suspenze obsahuj\u00EDc\u00ED sf\u00E9rick\u00E9 nestla\u010Diteln\u00E9 \u010D\u00E1stice, kter\u00E9 vytv\u00E1\u0159ely na povrchu membr\u00E1ny filtra\u010Dn\u00ED kol\u00E1\u010D. Pro studium vlivu mno\u017Estv\u00ED depozitu na membr\u00E1n\u011B byly pou\u017Eity dv\u011B suspenze s r\u016Fznou koncentrac\u00ED \u010D\u00E1stic. Pro stanoven\u00ED st\u0159ihov\u00E9ho nap\u011Bt\u00ED a jeho fluktuac\u00ED (intenzita turbulence) byla pou\u017Eita elektrochemick\u00E1 metoda. 20 mikroelektrod, na kter\u00FDch prob\u00EDhala elektrochemick\u00E1 reakce, bylo um\u00EDst\u011Bno na povrchu membr\u00E1ny a na povrchu plexiskla k ur\u010Den\u00ED st\u0159ihov\u00E9ho nap\u011Bt\u00ED a intenzity turbulence. M\u011B\u0159en\u00ED se prov\u00E1d\u011Blo pro dva r\u016Fzn\u00E9 distributory zaji\u0161\u0165uj\u00EDc\u00ED p\u0159\u00EDvod kapaliny do modulu. Pr\u00E1ce ukazuje, \u017Ee vlivem permeace membr\u00E1ny"@cs . "RIV/00216275:25310/04:00001621!RIV08-MSM-25310___" . "N" . "1"^^ . . "Journal of Membrane Science" . "NL - Nizozemsko" . . "Suction Effects on the Hydrodynamics in the Vicinity of an Ultrafiltration Plane Ceramic Membrane"@en . . . "Vliv sac\u00EDho efektu na hydrodynamiku na povrchu keramick\u00E9 deskov\u00E9 ultrafiltra\u010Dn\u00ED membr\u00E1ny"@cs . . "Suction Effects on the Hydrodynamics in the Vicinity of an Ultrafiltration Plane Ceramic Membrane" . "The wall shear stress is determined at the surface of a plane ceramic ultrafiltration membrane in a tangential ultrafiltration module. In a first time, the shear stresses are determined at the surface of a plate of Plexiglas mimicking a membrane and at the plane membrane surface without fouling particles with the aim to investigate the influence of permeation. In a second time, the wall shear stress is determined at the surface of the plane membrane during the ultrafiltration of a suspension of spherical no compressible particles inducing a deposit at the membrane surface. In order to study the influence of the foulant, two concentrations of particles were used for the experiments. The values of the mean wall shear stress and its fluctuations (turbulent intensity rate) were measured by using an electrochemical method. 20 microelectrodes, on which an electrochemical reaction occurs, are mounted flush to the plate of Plexiglas and to the surface of the membrane to determine the maps of shear stress and"@en . "11"^^ . . . "Vliv sac\u00EDho efektu na hydrodynamiku na povrchu keramick\u00E9 deskov\u00E9 ultrafiltra\u010Dn\u00ED membr\u00E1ny"@cs . "129-139" . . "ultrafiltration; ceramic membrane; wall shear stress; electrochemical probes; suction effects"@en . . "The wall shear stress is determined at the surface of a plane ceramic ultrafiltration membrane in a tangential ultrafiltration module. In a first time, the shear stresses are determined at the surface of a plate of Plexiglas mimicking a membrane and at the plane membrane surface without fouling particles with the aim to investigate the influence of permeation. In a second time, the wall shear stress is determined at the surface of the plane membrane during the ultrafiltration of a suspension of spherical no compressible particles inducing a deposit at the membrane surface. In order to study the influence of the foulant, two concentrations of particles were used for the experiments. The values of the mean wall shear stress and its fluctuations (turbulent intensity rate) were measured by using an electrochemical method. 20 microelectrodes, on which an electrochemical reaction occurs, are mounted flush to the plate of Plexiglas and to the surface of the membrane to determine the maps of shear stress and" . "[AB8E26B61AFC]" . "25310" . "Legentilhomme, P." . . "Velikovsk\u00E1, Pavl\u00EDna" . . . "Suction Effects on the Hydrodynamics in the Vicinity of an Ultrafiltration Plane Ceramic Membrane"@en . "588962" . "RIV/00216275:25310/04:00001621" . . "Comiti, Jacques" . . "Suction Effects on the Hydrodynamics in the Vicinity of an Ultrafiltration Plane Ceramic Membrane" . . "0376-7388" . . . "Z(MSM 253100001)" . "Jaouen, P." .