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Concentration of benzylpenicillin sodium by polyimide nanofiltration membrane
Author(s) -
Shi Baoli,
Zhang Qianru,
Zhang Hongfeng,
Liu Zhiguo,
Zhang Xiucheng
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25670
Subject(s) - nanofiltration , permeation , benzylpenicillin , membrane , sodium , polyimide , chromatography , chemistry , nuclear chemistry , materials science , chemical engineering , polymer chemistry , organic chemistry , biochemistry , layer (electronics) , penicillin , antibiotics , engineering
In this work, a nanofiltration membrane prepared from soluble polyimide (HQDPA‐DMMDA) was used to concentrate benzylpenicillin sodium solutions at 10 and 14°C. Three benzylpenicillin sodium solutions with the concentration of 7.2, 13.0, and 19.7 g/L were used. The pressure varied from 0.5 to 2.0 MPa. The rejection reached 85% for the solution of 19.7 g/L under 2.0 MPa. To the solution of 7.2 g/L, the largest permeation flux was 9.5 kg/m 2 h. Temperature had a slight influence on flux, but the influence on rejection was complicated. A sharp increasing phenomenon of rejection appeared under 0.5 MPa when the concentration was 19.7 g/L. This was elucidated by Martínez‐Landeira's works on benzylpenicillin's colloids. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007