Transport properties of Toray's asymmetric cellulose acetate membranes
β Scribed by M. Kurihara; W. Pusch; T. Tanaka
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 258 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0011-9164
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β¦ Synopsis
Using several asymmetric cellulose acetate membranes (CA), transport parameters such as the hydrodynamic (%p) and osmotic (Β£~) permeability and the asymptotic solute rejection (r) were determined from hyperfiltration experiments at 29C with different brine solutions (0.i M and 0.5 M NaCI, 0.i M NAN03, 0.05 M Na2S04). All membranes used exhibit a quite constant performance.
RESUME
Avec de solutions de 0.1 M NBCI, 0.5 M NaCI, 0.1 M NBNO3 et 0.05 M Na2SO 4 utilisant des m~surements de I'osmose inverse, Ies parametres de ia perm~abiIi-t~ hydrodynamique (Β£p) et osmotique (~) sinsi que Ie taux de rejet (r ~) des r4iations ph4nom~noiogiques de Is thermodynamique all 6t4 d4t4rmin~s pau dif-f~rentes membranes ceIiulose acetate asymm~trique. zUSAMMENFASSUNG FHr verschledene asymmetrlsehe Celluloseacetat-Membranen (CA-Membranen) wurden die Transportparameter hydrodynamische (%p) und osmotische (%~) Permeabili-t~t und das asymptotische R~ckhalteverm~gen (r) der ph~homenologischen Beziehungen der Thermodynamik irreversibler Prozesse aus Hyperfiltrationsmessungen bei 29C mit 0,i M NaCI-, 0,5 M NaCI-, 0,i M NaNO 3-und 0,05 M Na2SO4-LBsung bestimmt. Die Membranen besitzen sehr gleichm~ssige Transporteigenschaften.
π SIMILAR VOLUMES
Cellulose triacetate (CTA) ultrafilters and cellulose acetate blend (CAB) desalination membranes were treated with a radiofrequency gas plasma (tetrafluoromethane (CF(4)) or carbon dioxide (CO(2)), 47-49 W, 0.04-0.08 mbar). Treatment times were varied between 15 s and 120 min. The plasma-treated top
## Abstract Cellulose acetate (CA) is highly comparable to other synthetic polymer materials and is effective in the hemodialysis process. In this work, asymmetric CA membranes were synthesized with the phaseβinversion method. CA with a molecular weight of 52,000, poly(ethylene glycol) (PEG) with a