Distribution and characteristics of carbapenem-resistant and extended-spectrum β-lactamase (ESBL) producing Escherichia coli in hospital effluents, sewage treatment plants, and river water in an urban area of Japan

The Science of The Total Environment, Год журнала: 2022, Номер 839, С. 156232 - 156232

Опубликована: Май 25, 2022

Язык: Английский

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Impact of parabens on drinking water bacteria and their biofilms: The role of exposure time and substrate materials

Journal of Environmental Management, Год журнала: 2023, Номер 332, С. 117413 - 117413

Опубликована: Фев. 8, 2023

Parabens have been detected in drinking water (DW) worldwide, however, their impact on DW microbial communities remains to be explored. Microorganisms can easily adapt environmental changes. Therefore, exposure contaminants of emerging concern, particularly parabens, distribution systems (DWDS) may affect the microbiological quality and safety reaching consumers tap. This work provides a pioneer evaluation effects methylparaben (MP), propylparaben (PP), butylparaben (BP), combination (MIX), bacterial biofilms formed different surfaces, representative DWDS materials - high-density polyethylene (HDPE), polypropylene (PPL) polyvinyl chloride (PVC). Acinetobacter calcoaceticus Stenotrophomonas maltophilia, isolated from DW, were used form single dual-species surface selected. The MP for 7 days caused most significant biofilms, by increasing cellular culturability, density, thickness up 233%, 150%, 224%, respectively, comparison non-exposed biofilms. Overall, more pronounced alterations than when HDPE PPL, demonstrating that material affected action parabens Swimming motility production virulence factors (protease gelatinase) S. maltophilia increased 141%, 41%, 73%, exposed days. overall results highlight potential interfere with bacteria planktonic state compromise safety.

Язык: Английский

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Sonochemical advanced oxidation process for the degradation of furosemide in water: Effects of sonication’s conditions and scavengers

Ultrasonics Sonochemistry, Год журнала: 2023, Номер 95, С. 106361 - 106361

Опубликована: Март 8, 2023

The intensive consumption of pharmaceuticals and drugs in the last decades has led to their increased concentrations wastewaters from industrial sources. present paper deals, for first time, with sonochemical degradation mineralization furosemide (FSM) water. FSM is a potent loop diuretic used treat fluid build-up due heart failure, liver scarring, or kidney disease. influence several operating parameters such as acoustic intensity, ultrasonic frequency, initial concentration, solution's pH, nature dissolved gas (Ar, air N2) radical scavengers (2-propanol tert-butanol) on oxidation was assessed. obtained results showed that rate drug significantly increase intensity range 0.83 4.3 W cm-2 decreased augmentation frequency 585-1140 kHz. It also found sonolytic its concentration (2, 5, 10, 15 20 mg/L). most significant achieved acidic conditions at pH 2, while terms saturating gas, order Ar > N2. experiments molecule degraded mainly interfacial region bubble by hydroxyl attack. Additionally, conditions, sono-degradation 30.24 µmol L-1 solution demonstrate an optimal performance 585 kHz W/cm2, indicated even if action eliminated total within 60 min, low degree by-products formed during sono-oxidation process. process transforms into biodegradable environmentally friendly organic could be treated subsequent biological treatment. Besides, efficiency real environmental matrices natural mineral water seawater demonstrated. Consequently, advanced represent very interesting technique treatment contaminated FSM.

Язык: Английский

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Removal of Enteric Pathogens from Real Wastewater Using Single and Catalytic Ozonation

Water, Год журнала: 2019, Номер 11(1), С. 127 - 127

Опубликована: Янв. 12, 2019

Water scarcity is one of the main problems this century. reclamation appears as an alternative due to reuse treated wastewater. Therefore, effluents treatment technologies (activated sludge, rotary biological discs, percolating beds) must be improved since they are not able remove emerging contaminants such enteric pathogens (bacteria and virus). These pollutants difficult from wastewater lead adverse consequences human health. Advanced oxidation processes, single catalytic ozonation, appear suitable complements conventional processes. Catalytic ozonation was carried out using a low-cost material, volcanic rock. Single were capable promoting total Escherichia coli removal municipal after 90 min contact. The presence rock increases disinfection efficiency E. regrowth observed. identified viruses (Norovirus genotype I II JC virus) completely removed whereas eliminate virus even 150 treatment. higher performance process can explained by formation hydroxyl radicals, proving that occurs in liquid bulk adsorption at

Язык: Английский

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Adhesion of filamentous fungi isolated from drinking water under different process conditions

Water Research, Год журнала: 2019, Номер 164, С. 114951 - 114951

Опубликована: Авг. 5, 2019

Язык: Английский

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