Influence of process conditions and water quality on the formation of mutagenic byproducts in UV/H2O2 processes

Hofman‐Caris, Roberta; Harmsen, D.J.H.; Puijker, Leo; Baken, Kirsten; Wols, B.A.; Beerendonk, E.F.; Keltjens, L.L.M.

doi:10.1016/j.watres.2015.01.035

Cited by 28 publications

(11 citation statements)

References 19 publications

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“…Moreover, in case of refinery wastewater treatment by UV/H 2 O 2 /RWW, the formation of toxic phenolic by-product was detected when an MP lamp was applied which was not the case with an LP lamp [43], suggesting that pathways of organic contaminant degradation varies when different types of lamps are utilized. Similar results were reported earlier for drinking water [65]. In summary, the achieved results indicate that LP lamps are more beneficial than MP lamps.…”

Section: Irradiation Sourcessupporting

confidence: 90%

Toxicity Reduction of Industrial and Municipal Wastewater by Advanced Oxidation Processes (Photo-Fenton, UVC/H2O2, Electro-Fenton and Galvanic Fenton): A Review

et al. 2020

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The application of Fenton-based advanced oxidation processes (AOPs), such as photo-Fenton or electro-Fenton for wastewater treatment have been extensively studied in recent decades due to its high efficiency for the decomposition of persistent organic pollutants. Usually Fenton-based AOPs are used for the degradation of targeted pollutant or group of pollutants, which often leads to the formation of toxic by-products possessing a potential environmental risk. In this work, we have collected and reviewed recent findings regarding the feasibility of Fenton-based AOPs (photo-Fenton, UVC/H2O2, electro-Fenton and galvanic Fenton) for the detoxification of real municipal and industrial wastewaters. More specifically, operational conditions, relevance and suitability of different bioassays for the toxicity assessment of various wastewater types, cost estimation, all of which compose current challenges for the application of these AOPs for real wastewater detoxification are discussed.

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Section: Irradiation Sourcessupporting

confidence: 90%

Toxicity Reduction of Industrial and Municipal Wastewater by Advanced Oxidation Processes (Photo-Fenton, UVC/H2O2, Electro-Fenton and Galvanic Fenton): A Review

et al. 2020

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“…For the full-scale samples, not only MP UV but also H 2 O 2 was applied. H 2 O 2 decomposition may oxidize part of the N-DBPs formed, explaining why a part of the N-DBPs is not detected or detected at a lower concentration in the full-scale samples. , …”

Section: Resultsmentioning

confidence: 99%

“…Genotoxicity of treated drinking water is regularly evaluated by the Ames mutagenicity test. Effluents of MP UV/H 2 O 2 drinking water treatment have been shown to induce a response in the Ames fluctuation test, indicating the presence of potentially mutagenic compounds. − The genotoxic effect was shown to be effectively removed by post-treatment with granular activated carbon (GAC) filtration, which is applied to remove the excess of H 2 O 2 . , Nitrate photolysis by MP UV irradiation in the presence of natural organic matter (NOM) was found to be the key parameter in the manifestation of an Ames test response after treatment of pretreated surface water, reconstituted water, and artificial water containing NOM and nitrate with MP UV technology. , The formation of nitro- or nitroso aromatic compounds due to nitrate photolysis by MP UV irradiation in the presence of NOM is likely. Some nitro- and nitroso aromatic compounds are known to produce a response in the Ames test. ,− The Ames test response observed after MP UV irradiation may be caused by multiple nitrated and nitrosated compounds at different concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…H 2 O 2 decomposition may oxidize part of the N-DBPs formed, explaining why a part of the N-DBPs is not detected or detected at a lower concentration in the full-scale samples. 22,44 Figure 4 compares the Ames fluctuation test response (4A) and the results of the chemical screening for the N-DBPs (4B) in the full-scale drinking water treatment samples. The results indicate an increased response in both the Ames fluctuation test and the chemical analysis (expressed as summed equivalent concentrations) after MP UV/H 2 O 2 treatment and a subsequent decrease in both these responses after dune infiltration albeit not exactly of the same order of magnitude.…”

Section: ■ Introductionmentioning

confidence: 99%

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Tracing Nitrogenous Disinfection Byproducts after Medium Pressure UV Water Treatment by Stable Isotope Labeling and High Resolution Mass Spectrometry

Kolkman

Martijn²,

Vughs

et al. 2015

Environ. Sci. Technol.

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Advanced oxidation processes are important barriers for organic micropollutants (e.g., pharmaceuticals, pesticides) in (drinking) water treatment. Studies indicate that medium pressure (MP) UV/H2O2 treatment leads to a positive response in Ames mutagenicity tests, which is then removed after granulated activated carbon (GAC) filtration. The formed potentially mutagenic substances were hitherto not identified and may result from the reaction of photolysis products of nitrate with (photolysis products of) natural organic material (NOM). In this study we present an innovative approach to trace the formation of disinfection byproducts (DBPs) of MP UV water treatment, based on stable isotope labeled nitrate combined with high resolution mass spectrometry. It was shown that after MP UV treatment of artificial water containing NOM and nitrate, multiple nitrogen containing substances were formed. In total 84 N-DBPs were detected at individual concentrations between 1 to 135 ng/L bentazon-d6 equivalents, with a summed concentration of 1.2 μg/L bentazon-d6 equivalents. The chemical structures of three byproducts were confirmed. Screening for the 84 N-DBPs in water samples from a full-scale drinking water treatment plant based on MP UV/H2O2 treatment showed that 22 of the N-DBPs found in artificial water were also detected in real water samples.

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“…Hydrogen peroxide oxidizes the iron, manganese and sulphur odours to a solid form that the catalytic carbon can remove. For a lot of appliances no contact reservoir is necessary, and the hydrogen peroxide is successfully indifferent by the catalytic carbon medium [22].…”

Section: Chemical Methods Of Water Treatmentmentioning

confidence: 99%

Different methods of treatment of liquid systems and solutions:a review

Dubovkina¹

2019

UJFS

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Introduction. The purpose of this reseach is to investigate different methods of the treatment of the liquid systems and solutions for the change of the chemical and physical parameters and properties these liquid systems and solutions. Materials and methods. Objects of research are different types of treatment and processing methods end modes of liquid water systems and solutions like as technological water for the application in food industry. Subjects of study are change of the physical and chemical parameters and properties of water systems and solutions. Scientific and research works, reviews, articles, monographs of different methods and processes of treatment water systems were analyzed. Results and discussion. It is established that a great variety of methods of liquid systems and solutions treatment are widely used in different brunches of food industry. The application of actual type of processing depends from many factors. The research studies confirmed the possibility to amplification technological processes by innovative reagentless methods of physical influences. Every of these methods, modes and approaches has its own objective problems, which need the modern original solutions, Chemical methods of treatment give the possibility for disinfection, inactivating pathogenic organisms and these methods can be used with large volumes of water and water solutions Biological methods of water, water systems and wastewater solutions treatment are an important and essential part of any wastewater processing. The physical and chemical properties and parameters of water, and liquid mediums, such as: oxidation-reduction potential, pH value, dissolved oxygen and etc. may be changed by the physical methods of energy influence. Conclusions. The application of different methods of treatment in combination could improve the water treatment process environmentally. One of original and new procedure and equipment that was used for improvement of water treatment process is the method of discrete-pulsed input of energy.

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Influence of process conditions and water quality on the formation of mutagenic byproducts in UV/H2O2 processes

Cited by 28 publications

References 19 publications

Toxicity Reduction of Industrial and Municipal Wastewater by Advanced Oxidation Processes (Photo-Fenton, UVC/H2O2, Electro-Fenton and Galvanic Fenton): A Review

Toxicity Reduction of Industrial and Municipal Wastewater by Advanced Oxidation Processes (Photo-Fenton, UVC/H2O2, Electro-Fenton and Galvanic Fenton): A Review

Tracing Nitrogenous Disinfection Byproducts after Medium Pressure UV Water Treatment by Stable Isotope Labeling and High Resolution Mass Spectrometry

Different methods of treatment of liquid systems and solutions:a review

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