Application of activated persulfate for the inactivation of fecal bacterial indicators in water

Journal of Environmental Management
Danae VenieriIosifina Gounaki

Abstract

Activated persulfate, as a member of the broad group of Advanced Oxidation Processes (AOPs), has emerged as a promising method for the elimination of microorganisms in aqueous matrices. This study evaluates the disinfection efficiency of this technique with respect to the inactivation of Escherichia coli and Enterococcus faecalis in water samples, as representative Gram negative and Gram positive bacterial indicators, respectively. In this perspective, various activators were employed, namely, ferric ion, heating, ultrasound application and UVA irradiation, which exhibited different bactericidal effect, depending on the operating conditions and the structural properties of each species. The highest disinfection rates were achieved with 200 mg/L of persulfate and ferric ion or heating as activators. For instance, 6 Log reductions were recorded within only 10-15 min when 30 mg/L of iron were applied, whereas the same bacterial removal was noted upon heat-activation at 50 °C, but in longer periods (i.e. 45-60 min). Nevertheless, in all cases E. faecalis was more resistant than E. coli, which was readily inactivated in shorter treatment periods. The overall process activity was deteriorated above the limit of 200 mg/L of persulfate...Continue Reading

References

Jun 7, 2003·Biotechnology Progress·William G Pitt, S Aaron Ross
Sep 13, 2013·Environmental Science & Technology·Samyoung AhnPaul G Tratnyek
Mar 5, 2016·Chemosphere·Laura W Matzek, Kimberly E Carter
Oct 26, 2016·Journal of Hazardous Materials·Yiqun ChenSonglin Wang
Dec 3, 2016·Ecotoxicology and Environmental Safety·Marina KhandarkhaevaOyuna Tsydenova
Sep 22, 2017·Water Research·Leonidas BekrisDionissios Mantzavinos
Jul 11, 2018·International Journal of Food Microbiology·Hang QiYen-Con Hung
Apr 20, 2019·Food Research International·Hang QiYen-Con Hung
Jul 26, 2019·Water Research·Javier Moreno-AndrésEnrique Nebot
Dec 29, 2019·Food Research International·Ling XiongKasper Hettinga

❮ Previous
Next ❯

Citations

Mar 20, 2021·The Science of the Total Environment·Sonia Guerra-RodríguezJorge Rodríguez-Chueca

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bacterial Protein Structures (ASM)

Bacterial protein structures can expedite the development of novel antibiotics. Here is the latest research on bacterial proteins and the resolution of their structures.

Bacterial Protein Structures

Bacterial protein structures can expedite the development of novel antibiotics. Here is the latest research on bacterial proteins and the resolution of their structures.