M. Floyd Hobbs, Charles P. Gerba, Craig Wallis, Joseph L. Melnick, Jean S. Lennon

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The photodynamic inactivation of poliovirus by use of the photoreactive dye methylene blue at pH 10 and monochromatic lights was investigated on a continuous flow basis. The photodynamic inactivation process was effective for virus inactivation in clarified wastewater and requires various unit operations that are inherent to both the tertiary treatment of secondary effluent for phosphorus and ammonia removal and for the physical-chemical treatment of sewage. The process can be used in existing physical-chemical waste treatment plants, secondary waste treatment plants where tertiary treatment for nutrient and improved carbon removals are of concern, and water treatment plants where the lime-softening process is used for water purification. Photodynamic inactivation rates for poliovirus using methylene blue at pH 10 were sensitive to heat during sensitization and subsequent irradiation.

Original languageEnglish (US)
Pages (from-to)459-472
Number of pages14
JournalASCE J Environ Eng Div
Issue number3
StatePublished - 1977

ASJC Scopus subject areas

  • General Medicine


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