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Removal of micro-organisms by filtration through unwoven cloth coated with a pyridinium-type polymer

Published online by Cambridge University Press:  15 May 2009

N. Kawabata
Affiliation:
Department of Chemistry and Materials Technology, Faculty of Engineering and Design, Kyoto Institute of Technology, Matsugasaki, Sakyo–ku, Kyoto 606, Japan
T. Inoue
Affiliation:
Department of Chemistry and Materials Technology, Faculty of Engineering and Design, Kyoto Institute of Technology, Matsugasaki, Sakyo–ku, Kyoto 606, Japan
H. Tomita
Affiliation:
Department of Chemistry and Materials Technology, Faculty of Engineering and Design, Kyoto Institute of Technology, Matsugasaki, Sakyo–ku, Kyoto 606, Japan
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Summary

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Unwoven cloth coated with 32 mg/g of a copolymer of N-benzyl-4-vinyl-pyridinium chloride and styrene was found to be effective in removing micro-organisms from water. In experiments demonstrating removal of Escherichia coli by filtration through ten sheets of the unwoven cloth, the rate of removal was 99·99% at a filtration rate of 2·6 cm/h, and remained at 99% even at a high filtration rate of 300 cm/h and a low influent concentration of the bacterial cells such as 10 cells/ml. The rate of removal tended to increase with a decrease in the influent bacterial concentration. Seven other bacteria and two yeasts were effectively removed by filtration through the unwoven cloth. Filtration through the unwoven cloth was also effective in removing spores of fungi from water but was not very effective in removing bacteriophage T4 from aqueous solution.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1992

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