Kinetic assessment of antibiotic resistant bacteria inactivation by solar photo-Fenton in batch and continuous flow mode for wastewater reuse

Jiménez, Irene de la Obra; López, J.L. Casas; Ibáñez, G. Rivas; García, Blanca C.; Pérez, J.A. Sánchez

doi:10.1016/j.watres.2019.04.059

Cited by 30 publications

(8 citation statements)

References 25 publications

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“…Also, solar/Fe/S 2 O 8 2− was similarly effective for total and resistant bacteria (Fig. 4), as it has been reported for solar/ Fe/H 2 O 2 (De la Obra et al 2019;Giannakis et al 2018).…”

Section: Inactivation Of Arbsupporting

confidence: 79%

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Persulfate mediated solar photo-Fenton aiming at wastewater treatment plant effluent improvement at neutral PH: emerging contaminant removal, disinfection, and elimination of antibiotic-resistant bacteria

Starling

Costa

Souza

et al. 2021

Environ Sci Pollut Res

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This work investigated an innovative alternative to improve municipal wastewater treatment plant effluent (MWWTP effluent) quality aiming at the removal of contaminants of emerging concern (caffeine, carbendazim, and losartan potassium), and antibiotic-resistant bacteria (ARB), as well as disinfection (E. coli). Persulfate was used as an alternative oxidant in the solar photo-Fenton process (solar/Fe/S2O82−) due to its greater stability in the presence of matrix components. The efficiency of solar/Fe/S2O82− at neutral pH using intermittent iron additions is unprecedented in the literature. At first, solar/Fe/S2O82− was performed in a solar simulator (30 W m−2) leading to more than 60% removal of CECs, and the intermittent iron addition strategy was proved effective. Then, solar/Fe/S2O82− and solar/Fe/H2O2 were compared in semi-pilot scale in a raceway pond reactor (RPR) and a cost analysis was performed. Solar/Fe/S2O82− showed higher efficiencies of removal of target CECs (55%), E. coli (3 log units), and ARB (3 to 4 log units) within 1.9 kJ L−1 of accumulated irradiation compared to solar/Fe/H2O2 (CECs, 49%; E. coli, 2 log units; ARB, 1 to 3 log units in 2.5 kJ L−1). None of the treatments generated acute toxicity upon Allivibrio fischeri. Lower total cost was obtained using S2O82− (0.6 € m−3) compared to H2O2 (1.2 € m−3). Therefore, the iron intermittent addition aligned to the use of persulfate is suitable for MWWTP effluent quality improvement at neutral pH.

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“…Also, solar/Fe/S 2 O 8 2− was similarly effective for total and resistant bacteria (Fig. 4), as it has been reported for solar/ Fe/H 2 O 2 (De la Obra et al 2019;Giannakis et al 2018).…”

Section: Inactivation Of Arbsupporting

confidence: 79%

“…4). This may be an advantage when considering continuous treatment operation in the MWWTP overnight, which was more efficient than operation in batch mode for the removal of bacteria resistant to cephalosporin via solar/Fe/H 2 O 2 at neutral pH (De la Obra et al 2019 (Wordofa et al 2017).…”

Section: Inactivation Of Arbmentioning

confidence: 99%

Persulfate mediated solar photo-Fenton aiming at wastewater treatment plant effluent improvement at neutral PH: emerging contaminant removal, disinfection, and elimination of antibiotic-resistant bacteria

Starling

Costa

Souza

et al. 2021

Environ Sci Pollut Res

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“…Several technologies to eliminate antibiotic-resistant bacteria and/or antibiotic resistance genes have been employed including ultraviolet (UV) light [ 9 ], solar photo-Fenton process [ 10 ], photocatalysis [ 11 ], photoelectrocatalysis [ 12 ], and nanoparticle treatment [ 13 ]. However, some of these technologies have given disappointing levels of disinfection [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Antibiotic-Resistant and Non-Resistant Bacteria Display Similar Susceptibility to Dielectric Barrier Discharge Plasma

Sakudo

Misawa

2020

IJMS

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Here, we examined whether antibiotic-resistant and non-resistant bacteria show a differential susceptibility to plasma treatment. Escherichia coli DH5α were transformed with pPRO-EX-HT-CAT, which encodes an ampicillin resistance gene and chloramphenicol acetyltransferase (CAT) gene, and then treated with a dielectric barrier discharge (DBD) plasma torch. Plasma treatment reduced the viable cell count of E. coli after transformation/selection and further cultured in ampicillin-containing and ampicillin-free medium. However, there was no significant difference in viable cell count between the transformed and untransformed E. coli after 1 min- and 2 min-plasma treatment. Furthermore, the enzyme-linked immunosorbent assay (ELISA) and acetyltransferase activity assay showed that the CAT activity was reduced after plasma treatment in both transformed and selected E. coli grown in ampicillin-containing or ampicillin-free medium. Loss of lipopolysaccharide and DNA damage caused by plasma treatment were confirmed by a Limulus test and polymerase chain reaction, respectively. Taken together, these findings suggest the plasma acts to degrade components of the bacteria and is therefore unlikely to display a differential affect against antibiotic-resistant and non-resistant bacteria. Therefore, the plasma method may be useful in eliminating bacteria that are recalcitrant to conventional antibiotic therapy.

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“…De la Obra Jiménez, López, Ibáñez, García, and Pérez (2019) showed that the rate of inactivation of cefotaxime resistant bacteria, as one of the ARB, was similar to total bacteria when the solar photo‐Fenton process was utilized to treat secondary effluents. Consequently, wastewater disinfection treatment could define the inactivation of total pathogen bacteria as its goal, as once the detection limit (1 CFU/mL) had been attained, ARB was also inactivated.…”

Section: Antimicrobial Resistancementioning

confidence: 99%

“…Also, the research revealed that the rate constant obtained for the inactivation of E. coli in continuous mode operation was around four orders of magnitude higher than that of batch mode. However, the authors noted that more research might be warranted to explain the mechanisms of inactivation and to model the process in the continuous flow mode (De la Obra Jiménez et al, 2019).…”

Section: Antimicrobial Resistancementioning

confidence: 99%

Disinfection and antimicrobial processes

Elnakar

2020

Water Environment Research

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Kinetic assessment of antibiotic resistant bacteria inactivation by solar photo-Fenton in batch and continuous flow mode for wastewater reuse

Cited by 30 publications

References 25 publications

Persulfate mediated solar photo-Fenton aiming at wastewater treatment plant effluent improvement at neutral PH: emerging contaminant removal, disinfection, and elimination of antibiotic-resistant bacteria

Persulfate mediated solar photo-Fenton aiming at wastewater treatment plant effluent improvement at neutral PH: emerging contaminant removal, disinfection, and elimination of antibiotic-resistant bacteria

Antibiotic-Resistant and Non-Resistant Bacteria Display Similar Susceptibility to Dielectric Barrier Discharge Plasma

Disinfection and antimicrobial processes

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