Biocidal Poly(styrenehydantoin) Beads for Disinfection of Water

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• 作者：Yongjun Chen ; S. D. Worley ; Jangho Kim ; C.-I. Wei ; Tay-Yuan Chen ; J. I. Santiago ; J. F. Williams ; and Gang Sun
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2003
• 出版时间：January 22, 2003
• 年：2003
• 卷：42
• 期：2
• 页码：280 - 284
• 全文大小：46K
• 年卷期：v.42,no.2(January 22, 2003)
• ISSN：1520-5045

文摘

The biocidal polymers poly[1,3-dichloro-5-methyl-5-(4'-vinylphenyl)hydantoin] and poly[1,3-dibromo-5-methyl-5-(4'-vinylphenyl)hydantoin] and the monochlorinated derivative have beenprepared as insoluble porous beads. Halogen stability, rechargeability, and efficacy againstpathogens (Staphylococcus aureus, Escherichia coli O157:H7, MS2 virus, and poliovirus) in awater filtration application have been evaluated. While the polymers previously prepared inpowdered granular solid form were effective against a wide variety of pathogens in contact timesof a few seconds, the flow rates of water through cartridge filters containing them were oftendiminished because of clogging problems. Furthermore, the fine particles could be partiallyaerosolized in a manufacturing facility, thus causing a potential hazard for workers in the facility.The porous beads, prepared entirely by heterogeneous reactions, overcome these limitationswhile maintaining outstanding biocidal efficacies. The chlorinated beads have the potential tobe used for disinfecting potable water in remote areas. The brominated beads are being evaluatedas biocides for use in recirculating water applications such as for spas.