Photodegradation of (E)- and (Z)-Endoxifen in water by ultraviolet light: Efficiency, kinetics, by-products, and toxicity assessment

Every compound that potentially can be harmful to the environment is called a Contaminant of Emerging Concern (CEC). Compounds classified as CECs may undergo different transformations, especially in the water environment. The intermediates formed in this way are considered to be toxic against living organisms even in trace concentrations. We attempted to identify the intermediates formed during single chlorination and UV-catalyzed processes supported by the action of chlorine and hydrogen peroxide or ozone of selected contaminants of emerging concern. The analysis of post-processing water samples containing benzocaine indicated the formation of seven compound intermediates, while ibuprofen, acridine and β-estradiol samples contained 5, 5, and 3 compound decomposition by-products, respectively. The number and also the concentration of the intermediates decreased with the time of UV irradiation. The toxicity assessment indicated that the UV-catalyzed processes lead to decreased toxicity nature of post-processed water solutions.

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Degradation of ciprofloxacin using Fenton's oxidation: Effect of operating parameters, identification of oxidized by-products and toxicity assessment

Chemosphere ◽

10.1016/j.chemosphere.2017.11.046 ◽

2018 ◽

Vol 193 ◽

pp. 1181-1188 ◽

Cited By ~ 49

Author(s):

Anirudh Gupta ◽

Anurag Garg

Keyword(s):

Toxicity Assessment ◽

Parameters Identification ◽

Operating Parameters ◽

Fenton’S Oxidation ◽

Fenton's Oxidation ◽

Oxidation Effect ◽

By Products

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Hierarchical magnetic petal-like Fe3O4-ZnO@g-C3N4 for removal of sulfamethoxazole, suppression of photocorrosion, by-products identification and toxicity assessment

Chemosphere ◽

10.1016/j.chemosphere.2018.04.102 ◽

2018 ◽

Vol 205 ◽

pp. 463-474 ◽

Cited By ~ 18

Author(s):

Amir Mirzaei ◽

Zhi Chen ◽

Fariborz Haghighat ◽

Laleh Yerushalmi

Keyword(s):

Toxicity Assessment ◽

By Products

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Fungal biodegradation and multi-level toxicity assessment of vinasse from distillation of winemaking by-products

Chemosphere ◽

10.1016/j.chemosphere.2019.124572 ◽

2020 ◽

Vol 238 ◽

pp. 124572 ◽

Cited By ~ 2

Author(s):

Joana M.C. Fernandes ◽

Rose Marie O.F. Sousa ◽

Irene Fraga ◽

Ana Sampaio ◽

Carla Amaral ◽

...

Keyword(s):

Toxicity Assessment ◽

Multi Level ◽

Fungal Biodegradation ◽

By Products

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

Catalysts ◽

10.3390/catal10060612 ◽

2020 ◽

Vol 10 (6) ◽

pp. 612 ◽

Cited By ~ 2

Author(s):

Juan José Rueda-Márquez ◽

Irina Levchuk ◽

Manuel Manzano ◽

Mika Sillanpää

Keyword(s):

Cost Estimation ◽

Advanced Oxidation Processes ◽

Municipal Wastewater ◽

High Efficiency ◽

Advanced Oxidation ◽

Toxicity Assessment ◽

Operational Conditions ◽

Oxidation Processes ◽

Real Wastewater ◽

By Products

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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