Urban wastewater disinfection for agricultural reuse: effect of solar driven AOPs in the inactivation of a multidrug resistant E. coli strain

Ferro, Giovanna; Fiorentino, Antonino; Alférez, María Castro; Polo-López, M.I.; Rizzo, Luigi; Fernández‐Ibáñez, Pilar

doi:10.1016/j.apcatb.2014.10.043

Cited by 116 publications

(57 citation statements)

References 41 publications

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“…Besides the chemical contamination, the biological pollution is also a matter of concern in aquatic environments, in particular in human-impacted areas, calling for adequate responses from WWTPs (Dunlop et al, 2015;Ferro et al, 2015a;Michael et al, 2013;Rizzo et al, 2014). Conventional WWTPs, although able to remove the bacterial loads up to 2 logarithmic cycles, do not contribute to significant reductions of antibiotic resistance prevalence and, in some cases, can even contribute to its increase (Michael et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Chemical oxidation technologies (COTs) and advanced oxidation processes (AOPs), such as Fenton-based processes, heterogeneous photocatalysis and ozonation-based processes, have been widely studied to eliminate PSs and CECs from different types of waste-water, but most studies are focused on single compounds, normally at concentrations higher than those found in urban wastewater (Ribeiro et al, 2015a). In addition, photocatalysis (with or without H2O2) and the photo-Fenton process were already tested for the inactivation of an antibiotic resistant Escherichia coli strain (Dunlop et al, 2015;Ferro et al, 2015a;Rizzo et al, 2014). However, more studies are still needed to better understand the effect of the oxidative approaches on the control of ARB&ARG.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic ozonation of urban wastewater and surface water using immobilized TiO2 with LEDs: Micropollutants, antibiotic resistance genes and estrogenic activity

et al. 2016

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Photocatalytic ozonation was employed for the first time in continuous mode with TiO2-coated glass Raschig rings and light emitting diodes (LEDs) to treat urban wastewater as well as surface water collected from the supply area of a drinking water treatment plant (DWTP). Different levels of contamination and types of contaminants were considered in this work, including chemical priority substances (PSs) and contaminants of emerging concern (CECs), as well as potential human opportunistic antibiotic resistant bacteria and their genes (ARB&ARG). Photocatalytic ozonation was more effective than single ozonation (or even than TiO2 catalytic ozonation) in the degradation of typical reaction by-products (such as oxalic acid), and more effective than photocatalysis to remove the parent micropollutants determined in urban wastewater. In fact, only fluoxetine, clarithromycin, erythromycin and 17-alpha-ethinylestradiol (EE2) were detected after photocatalytic ozonation, by using solid-phase extraction (SPE) pre-concentration and LC-MS/MS analysis. In surface water, this treatment allowed the removal of all determined micropollutants to levels below the limit of detection (0.01-0.20 ng L(-1)). The efficiency of this process was then assessed based on the capacity to remove different groups of cultivable microorganisms and housekeeping (16S rRNA) and antibiotic resistance or related genes (intI1, blaTEM, qnrS, sul1). Photocatalytic ozonation was observed to efficiently remove microorganisms and ARGs. Although after storage total heterotrophic and ARB (to ciprofloxacin, gentamicin, meropenem), fungi, and the genes 16S rRNA and intI1, increased to values close to the pre-treatment levels, the ARGs (blaTEM, qnrS and sul1) were reduced to levels below/close to the quantification limit even after 3-days storage of treated surface water or wastewater. Yeast estrogen screen (YES), thiazolyl blue tetrazolium reduction (MTT) and lactate dehydrogenase (LDH) assays were also performed before and after photocatalytic ozonation to evaluate the potential estrogenic activity, the cellular metabolic activity and the cell viability. Compounds with estrogenic effects and significant differences concerning cell viability were not observed in any case. A slight cytotoxicity was only detected for Caco-2 and hCMEC/D3 cell lines after treatment of the urban wastewater, but not for L929 fibroblasts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic ozonation of urban wastewater and surface water using immobilized TiO2 with LEDs: Micropollutants, antibiotic resistance genes and estrogenic activity

et al. 2016

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“…The majority of DBPs are a consequence of the chlorination of naturally occurring organic precursors such as humic substances (WHO, 2008;Grellier et al, 2015). Consequently, finding alternative effective mean of water disinfection which simultaneously avoid the generation of disinfection by-products has attracted the attention of many investigators (Venieri et al, 2015;Ferro et al, 2015;Giannakis et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Inactivation of pathogenic microorganisms in freshwater using HSO5−/UV-A LED and HSO5−/Mn+/UV-A LED oxidation processes

et al. 2017

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Freshwater disinfection using photolytic and catalytic activation of peroxymonosulphate (PMS) through PMS/UV-A LED and PMS/M/UV-A LED [M = Fe or Co] processes was evaluated through the inactivation of three different bacteria: Escherichia coli (Gram-negative), Bacillus mycoides (sporulated Gram-positive), Staphylococcus aureus (non-sporulated Gram-positive), and the fungus Candida albicans. Photolytic and catalytic activation of PMS were effective in the total inactivation of the bacteria using 0.1 mM of PMS and M at neutral pH (6.5), with E. coli reaching the highest and the fastest inactivation yield, followed by S. aureus and B. mycoides. With B. mycoides, the oxidative stress generated through the complexity of PMS/M/UV-A LED combined treatments triggered the formation of endospores. The treatment processes were also effective in the total inactivation of C. albicans, although, due to the ultrastructure, biochemistry and physiology of this yeast, higher dosages of reagents (5 mM of PMS and 2.5 mM of M) were required. The rate of microbial inactivation markedly increased through catalytic activation of PMS particularly during the first 60 s of treatment. Co was more effective than Fe to catalyse PMS decomposition to sulphate radicals for the inactivation of S. aureus and C. albicans. The inactivation of the four microorganisms was well represented by the Hom model. The Biphasic and the Double Weibull models, which are based on the existence of two microbial sub-populations exhibiting different resistance to the treatments, also fitted the experimental results of photolytic activation of PMS.

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“…The results extracted from these studies confirmed its lethal power on natural ARB from MWWTPs secondary effluents. Conversely, and depending on the type of resistant gene, its efficacy is lower when the ARG concentrations are analyzed, obtaining total damage in some monitored AG [60][61][62]. The presence and the spread of resistant microorganisms in the effluents from MWWTPs disposed into reused effluents are some of the biggest threats to humanity associated with the domestic use of wastewater.…”

Section: Introductionmentioning

confidence: 99%

Wastewater Treatment by Advanced Oxidation Process and Their Worldwide Research Trends

Garrido-Cárdenas

Esteban-García

Agüera

et al. 2019

IJERPH

276

114

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Background: Water is a scarce resource and is considered a fundamental pillar of sustainable development. The modern development of society requires more and more drinking water. For this cleaner wastewater, treatments are key factors. Among those that exist, advanced oxidation processes are being researched as one of the sustainable solutions. The main objective of this manuscript is to show the scientific advances in this field. Methods: In this paper, a systematic analysis of all the existing scientific works was carried out to verify the evolution of this line of research. Results: It was observed that the three main countries researching this field are China, Spain, and the USA. Regarding the scientific collaboration between countries, three clusters were detected—one of Spain, one of China and the USA, and one of Italy and France. The publications are grouped around three types of water: industrial, urban, and drinking. Regarding the research, 15 clusters identified from the keywords analyzed the advanced oxidation process (alone or combined with biological oxidation) with the type of wastewater and the target pollutant, removal of which is intended. Finally, the most important scientific communities or clusters detected in terms of the number of published articles were those related to the elimination of pollutants of biological origin, such as bacteria, and of industrial nature, such as pesticides or pharmaceutical products.

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Urban wastewater disinfection for agricultural reuse: effect of solar driven AOPs in the inactivation of a multidrug resistant E. coli strain

Cited by 116 publications

References 41 publications

Photocatalytic ozonation of urban wastewater and surface water using immobilized TiO2 with LEDs: Micropollutants, antibiotic resistance genes and estrogenic activity

Photocatalytic ozonation of urban wastewater and surface water using immobilized TiO2 with LEDs: Micropollutants, antibiotic resistance genes and estrogenic activity

Inactivation of pathogenic microorganisms in freshwater using HSO5−/UV-A LED and HSO5−/Mn+/UV-A LED oxidation processes

Wastewater Treatment by Advanced Oxidation Process and Their Worldwide Research Trends

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