The effect of combined cometabolism and gamma irradiation treatment on the biodegradability of diclofenac and sulfamethoxazole

Bezsenyi, Anikó; Sági, Gyuri; Makó, Magdolna; Palkó, György; Tóth, Tünde; Wojnárovits, László; Takács, Erzsébet

doi:10.1016/j.radphyschem.2019.108642

Cited by 16 publications

(2 citation statements)

References 33 publications

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“…Regular dosing of diclofenac to the anaerobic treatment process carries the risk of reducing gas production and the dentification potential [ 60 ]. Due to the large variety of pharmaceutical substances, as well as their different biotransformations, depending on the environment in which they are found, it seems that achieving a total reduction of pollution is possible only by combining various technologies, the so-called hybrid solutions [ 77 , 78 ].…”

Section: Discussionmentioning

confidence: 99%

Efficiency of Diclofenac Removal Using Activated Sludge in a Dynamic System (SBR Reactor) with Variable Parameters of pH, Concentration, and Sludge Oxygenation

et al. 2023

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Recently, traditional wastewater treatment systems have not been adapted to remove micropollutants, including pharmaceutical substances, which, even at low concentrations, cause adverse changes in aquatic and terrestrial living organisms. The problem of drug residues in the environment has been noticed; however, no universal legal regulations have been established for concentrations of these compounds in treated wastewater. Hence, the aim of the article was to determine the possibility of increasing the efficiency of diclofenac removal from activated sludge using the designed SBR reactor. This study included six cycles, working continuously, where each of them was characterized by changing conditions of pH, oxygenation, and composition of the synthetic medium. In each cycle, three concentrations of diclofenac were analyzed: 1 mg/L, 5 mg/L, 10 mg/L for the hydraulic retention time (HRT) of 4 d and the sludge retention time (SRT) of 12 d. The highest removal efficiency was achieved in the first test cycle for pH of natural sediment at the level of 6.7–7.0 (>97%), and in the third test cycle at pH stabilized at 6.5 (>87%). The reduced content of easily assimilable carbon from synthetic medium indicated a removal of >50%, which suggests that carbon in the structure of diclofenac restrained microorganisms to the rapid assimilation of this element. Under half-aerobic conditions, the drug removal effect for a concentration of 10 mg/L was slightly above 60%.

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Section: Discussionmentioning

confidence: 99%

Efficiency of Diclofenac Removal Using Activated Sludge in a Dynamic System (SBR Reactor) with Variable Parameters of pH, Concentration, and Sludge Oxygenation

et al. 2023

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“…A significant improvement in the decomposition efficiency of 15 mg dm −3 of DCF treated with an electron beam was observed in the presence of the addition of 20 mg of commercial titanium oxide TiO 2 as a catalyst [105]. The application of the co-metabolism (co-oxidation) route of irradiation in the presence of ethylene glycol to DCF caused a threefold increase in the biodegradability of DCF [106].…”

Section: Antibiotic Degradationmentioning

confidence: 99%

Application of Radiation Technology in Removing Endocrine Micropollutants from Waters and Wastewaters—A Review

Bojanowska-Czajka

2021

Applied Sciences

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Advanced Oxidation Processes (AOPs) are increasingly being adopted as a post-treatment after conventional wastewater treatment, mainly due to the efficient removal of biodegradable organic micropollutants. Endocrine disruptors are a specific group of such micropollutants. Many scientific studies demonstrate their extremely harmful effects on living organisms, even at low concentrations in water and wastewater. AOPs based on the generation of reactive species using radiation technologies, these being gamma radiation and electron beam, are still not being used to their full potential. This publication presents the application possibilities of using ionizing radiation for the degradation of selected endocrine micropollutants in water and wastewater.

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Occurrence and removal of antibiotics from industrial wastewater

et al. 2021

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The effect of combined cometabolism and gamma irradiation treatment on the biodegradability of diclofenac and sulfamethoxazole

Cited by 16 publications

References 33 publications

Efficiency of Diclofenac Removal Using Activated Sludge in a Dynamic System (SBR Reactor) with Variable Parameters of pH, Concentration, and Sludge Oxygenation

Efficiency of Diclofenac Removal Using Activated Sludge in a Dynamic System (SBR Reactor) with Variable Parameters of pH, Concentration, and Sludge Oxygenation

Application of Radiation Technology in Removing Endocrine Micropollutants from Waters and Wastewaters—A Review

Occurrence and removal of antibiotics from industrial wastewater

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