Improving ferrate disinfection and decontamination performance at neutral pH by activating peroxymonosulfate under solar light

• The introduction of solar light to Fe(VI)/PMS process improved E. coli inactivation. Fe(VI)/PMS/solar system has good potentials for micropollutants’ removal. low amounts oxidants and wide operational pH makes its application possible. bacterial inactivation pathways were proposed system. In this work, the effect as a “reducing agent” in disinfection decontamination water was investigated. Single, double triple-factor processes systematically studied against Escherichia validated on sulfamethoxazole. experiments performed with PMS or Fe(VI) dark conditions only achieved 1-log reduction 2 h, while no significant enhancement found either enhanced inactivation, complete (6-log) reached at 90 min. However, best improvement (Fe(VI)/PMS/solar light) which presented 6-log 40 case sulfamethoxazole, more than 70% removal under system, about 20% observed single double-factor processes. Our study revealed spectrum distribution effects iron speciation implications. A main role H O . participation S 4 - found, without overlooking direct itself, well possible involvement other transient species. Overall, efficacy series microorganisms combined effectiveness near-neutral pH, suggest suitability further assessment and/or water.