کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4482244 | 1316852 | 2013 | 7 صفحه PDF | دانلود رایگان |

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.
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► 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.
Journal: Water Research - Volume 47, Issue 8, 15 May 2013, Pages 2770–2776