TY - JOUR
T1 - Urban wastewater disinfection for agricultural reuse: effect of solar driven AOPs in the inactivation of a multidrug resistant E. coli strain
AU - Ferro, Giovanna
AU - Fiorentino, Antonino
AU - Alferez, María Castro
AU - Polo-López, M. Inmaculada
AU - Rizzo, Luigi
AU - Fernandez-Ibanez, Pilar
PY - 2014/10/24
Y1 - 2014/10/24
N2 - The occurrenceofantibioticsinurbanwastewatertreatmentplants(UWTPs)mayresultinthedevel-opment ofantibioticresistanceandsubsequentlyinthereleaseofmultidrugresistantbacteria(MDR)and genesintotheeffluent.ConventionaldisinfectionprocessesareonlypartiallyeffectiveincontrollingARB spread,soadvancedoxidationprocesses(AOPs)havebeeninvestigatedasalternativeoptioninthiswork. Inparticular,theaimofthisworkwastocomparativelyassesstheefficiencyofsolardisinfectionand solardrivenAOPs(namelyH2O2/sunlight, TiO2/sunlight, H2O2/TiO2/sunlight, naturalphoto-Fenton)for theinactivationofamultidrug(namelyampicillin,ciprofloxacinandtetracycline)resistant E. colistrain isolatedfromtheeffluentofthebiologicalprocessofanUWTP.DifferentconcentrationsofH2O2(0.588–1.470–2.205 mM),TiO2 (50–100mgL−1),H2O2/TiO2 (0.147mM/50mgL−1, 0.588mM/100mgL−1)and Fe2+/H2O2 (0.090/0.294, 0.179/0.588,0.358/1.176mM)wereevaluatedatpilot-scale(incompoundparabolic collectorreactor)inrealbiologicallytreatedwastewater.Allinvestigatedprocessesresultedina completeinactivation(5-logdecrease)ofbacteriauntildetectionlimit,butthebestdisinfectioneffi-ciency intermsoftreatmenttime(20mintoreachthedetectionlimit)andrequiredenergy(0.98kJL−1)was observedforphoto-FentonatpH4(Fe2+/H2O2:0.090/0.294 mM).Antimicrobialsusceptibilitywastested byKirby-Bauerdiskdiffusionmethod.Ampicillinandciprofloxacin(towhichtheselectedstrainis resistant),cefuroximeandnitrofurantoinwerechosenastestedantibiotics.Noneoftheinvestigatedprocesses affectedantibioticresistanceofsurvivedcolonies.
AB - The occurrenceofantibioticsinurbanwastewatertreatmentplants(UWTPs)mayresultinthedevel-opment ofantibioticresistanceandsubsequentlyinthereleaseofmultidrugresistantbacteria(MDR)and genesintotheeffluent.ConventionaldisinfectionprocessesareonlypartiallyeffectiveincontrollingARB spread,soadvancedoxidationprocesses(AOPs)havebeeninvestigatedasalternativeoptioninthiswork. Inparticular,theaimofthisworkwastocomparativelyassesstheefficiencyofsolardisinfectionand solardrivenAOPs(namelyH2O2/sunlight, TiO2/sunlight, H2O2/TiO2/sunlight, naturalphoto-Fenton)for theinactivationofamultidrug(namelyampicillin,ciprofloxacinandtetracycline)resistant E. colistrain isolatedfromtheeffluentofthebiologicalprocessofanUWTP.DifferentconcentrationsofH2O2(0.588–1.470–2.205 mM),TiO2 (50–100mgL−1),H2O2/TiO2 (0.147mM/50mgL−1, 0.588mM/100mgL−1)and Fe2+/H2O2 (0.090/0.294, 0.179/0.588,0.358/1.176mM)wereevaluatedatpilot-scale(incompoundparabolic collectorreactor)inrealbiologicallytreatedwastewater.Allinvestigatedprocessesresultedina completeinactivation(5-logdecrease)ofbacteriauntildetectionlimit,butthebestdisinfectioneffi-ciency intermsoftreatmenttime(20mintoreachthedetectionlimit)andrequiredenergy(0.98kJL−1)was observedforphoto-FentonatpH4(Fe2+/H2O2:0.090/0.294 mM).Antimicrobialsusceptibilitywastested byKirby-Bauerdiskdiffusionmethod.Ampicillinandciprofloxacin(towhichtheselectedstrainis resistant),cefuroximeandnitrofurantoinwerechosenastestedantibiotics.Noneoftheinvestigatedprocesses affectedantibioticresistanceofsurvivedcolonies.
KW - Antibiotic resistant bacteria
KW - Photocatalysis
KW - Solar disinfection
KW - Urban wastewater
KW - Wastewater reuse.
U2 - 10.1016/j.apcatb.2014.10.043
DO - 10.1016/j.apcatb.2014.10.043
M3 - Article
VL - 178
SP - 65
EP - 73
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
ER -