| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4482244 | Water Research | 2013 | 7 Pages |
The effects of UV irradiation on the respiration and survival of Escherichia coli in various concentrations of aqueous NaCl were investigated in the presence of a photocatalyst. In this study, we anticipated that the photocatalysis of residual chlorine generated in a solution containing Cl− would result in bacterial elimination. Our results indicated a gradual reduction in the E. coli survival ratio in freshwater; however, no decrease in total abundance was observed during 8 h of photocatalysis with UV irradiation. Conversely, the survival ratio of E. coli in the artificial seawater decreased drastically as a consequence of photocatalysis, with a concomitant decrease in total abundance. These results revealed that the chlorinated active species that formed on the photocatalyst surface influenced the observed inactivation.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (107 K)Download as PowerPoint slideHighlights► Residual chlorine was generated by photocatalysis in aqueous solution containing Cl−. ► The ratios of living cells and cells exhibiting respiration of Escherichia coli in various aqueous phases were investigated. ► Elimination of E. coli was observed in seawater under UV irradiation with photocatalysis.
