Inactivation of E. coli and P. aeruginosa by UV-A-Activated PMS and PDS, and Alkaline-Activated PDS: A Comparative Study
Water, Air, and Soil Pollution, vol.237, no.19, 2026 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 237 Issue: 19
- Publication Date: 2026
- Doi Number: 10.1007/s11270-026-09744-2
- Journal Name: Water, Air, and Soil Pollution
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, Environment Index, Geobase, Greenfile, Zoological Record, Natural Science Collection (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Earth, Atmospheric, & Aquatic Science Collection (ProQuest), Health Research Premium Collection (ProQuest)
- Keywords: Alkaline activation, Inactivation effect, PDS, PMS, UV-A
- Open Archive Collection: AVESIS Open Access Collection
- Bursa Uludag University Affiliated: Yes
Abstract
The aim of the present study was to evaluate the efficacy of peroxydisulfate(PDS)/peroxymonosulfate(PMS) activated using different methods for inactivating E.coli and P.aeruginosa. The UV-A, UV-A/PDS, PMS, and NaOH/PDS processes were used to inactivate E.coli and P.aeruginosa. Three different sulfate salts (K2S2O8, Na2S2O8 and Oxone) were activated with UV-A radiation, and their inactivation effects were determined. During 30 min of UV A (Ultraviolet-A) radiation, the addition of 3 mM K2S2O8, Na2S2O8, and Oxone increased the removal efficiency of E. coli by 1.76, 1.51, and 2.47 log, respectively. For P. aeruginosa, there were increases of 1.44, 1.62, and 2.55 logs, respectively. The highest removal efficiency was obtained with oxone + UV-A for E.coli and P.aeruginosa. To examine the inactivation effect of alkaline (NaOH)-activated peroxydisulfate on microorganisms, studies were carried out using two different doses of K2S2O8 (2 and 3 mM). With an increase in the PDS concentration, the removal efficiency of both bacteria increased. Higher removal efficiencies were obtained at higher base/PDS ratios. When the PDS concentration was increased from 2 to 3 mM at the same NaOH/PDS (0.25) ratio, the time required for 4 log bacteria removal was reduced by 33% for E.coli, while there was a decrease of more than 44.2% for P.aeruginosa.