Removal of virus from water by filtration using microporous membranes made of poly(N-benzyl-4-vinylpyridinium chloride)
✍ Scribed by Nariyoshi Kawabata; Isao Fujita; Tsuyoshi Inoue
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 909 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
✦ Synopsis
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-pm-thick cellulose nitrate membrane with a pore size of 0.45 pm 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,,-unit reduction in concentration) of bacteriophage T4, whereas the control experiments using noncoated membrane showed 91-96% removal (1.0-1.4 log,,-unit reduction in concentration) of the virus. A composite 360-pm-thick microporous membrane with a pore size of 20 pm was prepared that consisted of connected minute beads of 1.7 pm in diameter made of crosslinked poly(Nbenzyl-4-vinylpyridinium chloride) and reinforced by a nonwoven cloth. Simple filtration using one sheet of the composite membrane at 34.2 cm/h showed 99.96-99.9995% removal (3.4-5.3 log,,-unit reduction in concentration). The virus was not detected in the filtrate when two sheets of the composite membrane were used.