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Removal of virus from water by filtration using microporous membranes made of poly( N ‐benzyl‐4‐vinylpyridinium chloride)
Author(s) -
Kawabata Nariyoshi,
Fujita Isao,
Inoue Tsuyoshi
Publication year - 1996
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/(sici)1097-4628(19960509)60:6<911::aid-app15>3.0.co;2-z
Subject(s) - microporous material , membrane , filtration (mathematics) , chloride , ultrafiltration (renal) , cellulose , chemistry , chemical engineering , polymer chemistry , materials science , nuclear chemistry , chromatography , organic chemistry , biochemistry , statistics , mathematics , engineering
Two types of microporous filter materials were developed for removing virus from water by using poly( N ‐benzyl‐4‐vinylpyridinium chloride) that captures virus in water. Conventional ultrafiltration using one to three sheets of 145‐μm‐thick cellulose nitrate membrane with a pore size of 0.45 μm and coated with 1.7 mg/g of poly( N ‐benzyl‐4‐vinylpyridinium chloride‐ co ‐styrene) showed 99.4–99.998% removal (2.2–4.7 log 10 ‐unit reduction in concentration) of bacteriophage T4, whereas the control experiments using noncoated membrane showed 91–96% removal (1.0–1.4 log 10 ‐unit reduction in concentration) of the virus. A composite 360‐μm‐thick microporous membrane with a pore size of 20 ¨m was prepared that consisted of connected minute beads of 1.7 ¨m in diameter made of crosslinked poly( N ‐benzyl‐4‐vinylpyridinium chloride) and reinforced by a nonwoven cloth. Simple filtration using one sheet of the composite membrane at 34.2cm/h showed 99.96–99.9995% removal (3.4–5.3 log 10 ‐unit reduction in concentration). The virus was not detected in the filtrate when two sheets of the composite membrane were used. © 1996 John Wiley & Sons, Inc.