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Biocidal Poly(styrenehydantoin) Beads for Disinfection of Water

2002; American Chemical Society; Volume: 42; Issue: 2 Linguagem: Inglês

10.1021/ie020266+

1520-5045

Yongjun Chen, S. D. Worley, Jangho Kim, Cheng‐I Wei, Tay‐Yuan Chen, J. I. Santiago, J. F. Williams, Gang Sun,

Environmental Chemistry and Analysis

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 been prepared as insoluble porous beads. Halogen stability, rechargeability, and efficacy against pathogens (Staphylococcus aureus, Escherichia coli O157:H7, MS2 virus, and poliovirus) in a water filtration application have been evaluated. While the polymers previously prepared in powdered granular solid form were effective against a wide variety of pathogens in contact times of a few seconds, the flow rates of water through cartridge filters containing them were often diminished because of clogging problems. Furthermore, the fine particles could be partially aerosolized in a manufacturing facility, thus causing a potential hazard for workers in the facility. The porous beads, prepared entirely by heterogeneous reactions, overcome these limitations while maintaining outstanding biocidal efficacies. The chlorinated beads have the po...