کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4482244 1316852 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Differences in elimination efficiencies of Escherichia coli in freshwater and seawater as a result of TiO2 photocatalysis
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Differences in elimination efficiencies of Escherichia coli in freshwater and seawater as a result of TiO2 photocatalysis
چکیده انگلیسی

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.

Figure optionsDownload 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 47, Issue 8, 15 May 2013, Pages 2770–2776
نویسندگان
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