Results 221 to 230 of about 32,167 (256)

Modified ultrafiltration membranes for humic acid removal

Journal of the Taiwan Institute of Chemical Engineers, 2014
Abstract Polyethersulfone (PES) ultrafiltration membranes were prepared via phase inversion induced by immersion precipitation with a blending method in different concentrations of two hydrophilic monomers, namely 3,5-diaminobenzoic acid (DBA) and gallic acid (GA).
Alisa Mehrparvar, Ahmad Rahimpour, Mohsen Jahanshahi   +2 more
openaire   +1 more source

Properties of polyethersulfone ultrafiltration membranes modified by polyelectrolytes

Desalination, 2010
This study reports on the surface modification of ultrafiltration membranes using the layer-by-layer (LbL) technique. The novelty of this work resides in the LbL assembly of charged polyelectrolytes by electrostatic adsorption directly onto the ultrafiltration membranes without any prior treatment of the surface.
Jozef Kochan, Thomas Wintgens, John Erik Wong, Thomas Melin   +3 more
openaire   +1 more source

Separation of isomers by ultrafiltration using modified cyclodextrins

Separation and Purification Technology, 2000
Abstract In order to improve selective inclusion of cyclodextrin (CD) and permeate flux, separation of structural isomers ( o -, m - and p -nitrophenols) and optical isomers ( d - and l -phenylalanines) were conducted using some modified α and β-CDs, glucosyl (G1)-, maltosyl (G2)-, hydroxy-propyl (HP)-, α- and β-CDs, according to the previously ...
Arif Yudiarto, Erwana Dewi, Takao Kokugan   +2 more
openaire   +1 more source

Polyamide ultrafiltration membranes modified with nanocarbon additives

Russian Journal of Applied Chemistry, 2008
Possibility of modification of polyphenyleneisophthalamide with 5 wt % nanocarbon additive (fullerene, astralene, or graphite soot) was studied. The resulting composites were used to prepare asymmetric membranes, and the effect of carbon additives on the performance of these membranes was examined.
G. A. Polotskaya, A. V. Pen’kova, N. N. Sudareva, A. E. Polotskii, A. M. Toikka   +4 more
openaire   +1 more source

Surfactant modified ultrafiltration for nitrate ion removal

Journal of Membrane Science, 1997
It is confirmed that small concentrations of cationic surfactant radically modify cellulose acetate membrane properties concerning nitrate ion rejection. This modification is produced by a strong adsorption of surfactant molecules on the membranes which acts on the Donnan potential difference.
G. Morel, N. Ouazzani, A. Graciaa, J. Lachaise   +3 more
openaire   +1 more source

Modified poly(phenylene oxide) membranes in ultrafiltration and micellar-enhanced ultrafiltration of organic compounds

Desalination, 2006
Poly(phenylene oxide) (PPO) membranes with sulfonic groups were prepared by two methods: plasma-initiated surface grafting of sodium styrenesulfonate or chemical sulfonation (with chlorosulfonic acid) of PPO, followed by membrane preparation from the modified material.
Gryzelda Poźniak, Irena Gancarz, Włodzimierz Tylus   +2 more
openaire   +1 more source

Chemically Modified Ultrafiltration Membranes for Enzyme Fixation

1996
Ultrafiltration is a widely used and well established separation process in which asymmetric porous membranes are commonly applied. Many a textbook is listing the wide array of different applications in various branches of industry and gives extensive advice on membrane preparation and on the pros and cons of the various membrane polymers (Cheryan ...
Ulrike Artelt, Eberhard Staude
openaire   +1 more source

MODIFIED ULTRAFILTRATION IN INFANTS

Anesthesia & Analgesia, 1999
Ingrid Hollinger, L Shore-Lesserson, F Vela-Cantos, S Shah   +3 more
openaire   +1 more source

[Application of modified ultrafiltration to cardiac surgery in adults].

Kyobu geka. The Japanese journal of thoracic surgery, 1999
Modified Ultrafiltration (MUF) was developed for blood concentration and reduction of postoperative edema in cardiac surgery in children. Its beneficial effects on postoperative hemodynamics have been reported. We applied MUF to cardiac surgery in adults and evaluated its usefulness.
M, Onoe, T, Magara, T, Nojima, Y, Yamamoto, S, Hong, H, Uga, T, Kiguchi, Y, Minamoto, S, Sasai   +8 more
openaire   +1 more source

[Pitfall of modified ultrafiltration in pediatric cardiac surgery].

Kyobu geka. The Japanese journal of thoracic surgery, 2002
Since June, 1998, modified ultrafiltration (MUF) was performed for 92 consecutive children who underwent cardiac surgery using cardiopulmonary bypass, except those with atrial septal defect. Among 92 cases, MUF could not be completed in two cases because of the accident that many air bubbles were found in the arterial line of the CPB circuit.
M, Onoe, H, Kitayama, K, Matsumoto, H, Oku, T, Saga   +4 more
openaire   +1 more source