Abstract
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.
Highlights
Industrial and urban wastewater effluents are considered to be among the most important sources of aquatic pollutants [1]
Toxicity bioassays were demonstrated to be an efficient tool for the assessment of wastewater detoxification
The use of single toxicity bioassay might not be sufficient for the evaluation of wastewater toxicity after the application of Fenton-based advanced oxidation processes (AOPs) due to the large variation of sensitivity of different species
Summary
Industrial and urban wastewater effluents are considered to be among the most important sources of aquatic pollutants [1]. The main goal of this work is to summarize and critically discuss the recent findings regarding for the detoxification of real industrial or urban wastewater (or wastewater matrix) It is important the feasibility of photo-Fenton, UVC/H2O2 (in presence of iron), electro-Fenton and galvanic Fenton to emphasize that in this review, studies, in which the toxicity assessment was applied for model. Obtained literature list was checked industrial wastewater matrix) was used; (ii) toxicity assessment was performed before and after (or manually with the purpose to leave studies, in which (i) only real or synthetic wastewater during) Fenton-based AOPs. It should be noticed that list of articles used for this review was limited (municipal and/or industrial wastewater matrix) was used; (ii) toxicity assessment was performed to those published in peer-reviewed journals in English language. It should be noticed that list of articles used for this review was limited to those in peer-reviewed
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