Are UV photolysis and UV/H2O2 process efficient to treat estrogens in waters? Chemical and biological assessment at pilot scale

Cédat, Bruno; Brauer, Christine de; Métivier, Hélène; Dumont, Nathalie; Tutundjan, Renaud

doi:10.1016/j.watres.2016.05.040

Cited by 69 publications

(25 citation statements)

References 44 publications

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“…Consequently, the H 2 O 2 initial concentration must be carefully adjusted to maximize the efficiency of the removal process. Moreover, H 2 O 2 is an expensive reagent that increases the total operating costs of the process [103].…”

Section: The H 2 O 2 /Uv Systemmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

516

240

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In this work, the application of advanced oxidation processes (AOPs) for the removal of antibiotics from water has been reviewed. The present concern about water has been exposed, and the main problems derived from the presence of emerging pollutants have been analyzed. Photolysis processes, ozone-based AOPs including ozonation, O3/UV, O3/H2O2, and O3/H2O2/UV, hydrogen peroxide-based methods (i.e., H2O2/UV, Fenton, Fenton-like, hetero-Fenton, and photo-Fenton), heterogeneous photocatalysis (TiO2/UV and TiO2/H2O2/UV systems), and sonochemical and electrooxidative AOPs have been reviewed. The main challenges and prospects of AOPs, as well as some recommendations for the improvement of AOPs aimed at the removal of antibiotics from wastewaters, are pointed out.

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Section: The H 2 O 2 /Uv Systemmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

516

240

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“…Photosensitizers comprise a wide variety of organic compounds found in DOM that can undergo diverse photochemical reactions, producing ROS that initiate MPs degradation. Such ROS may in certain cases offset the reduction of transmittance of NOM containing matrices, which in turn diminishes the degradation by direct photolysis (e.g., studies in wastewater and in drinking water) [25]. DOM photosensitizers act by absorption of light (Reaction 1) followed by excitation to a single state ( 1 DOM * ), which has typical short lifespans (ps to ns) and consequent little interaction with organic MPs.…”

Section: Photolysismentioning

confidence: 99%

Impact of water matrix on the removal of micropollutants by advanced oxidation technologies

Ribeiro

Moreira

Puma

et al. 2019

Chemical Engineering Journal

430

110

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Micropollutants (MPs) in the aquatic compartments originate from many sources and particularly from the effluents of urban wastewater treatment plants (UWWTPs). Advanced oxidation technologies (AOTs) usually applied after biological processes, have recently emerged as effective tertiary treatments for the removal of MPs, but the oxidation rates of the single compounds may be largely affected by the constituent species of the water matrix. These species include dissolved organic matter and inorganic species (e.g., carbonate, bicarbonate, nitrite, sulphate, chloride). This review analyses the impact of such substances on common AOTs including photolysis, UV/H2O2, Fenton, photocatalysis, and ozone-based processes. The degradation efficiency of single MPs by AOTs results from the combined impact of the water matrix constituents, which can have neutral, inhibiting or promoting effect, depending on the process and the mechanism by which these water components react. Organic species can be either inhibitors (by light attenuation; scavenging effects; or adsorption to catalyst) or promoters (by originating reactive oxygen species (ROS) which enhance indirect photolysis; or by regenerating the catalyst). Inorganic species can also be either inhibitors (by scavenging effects; formation of radicals less active than hydroxyl radicals; iron complexation; adsorption to catalyst or decrease 2 of its effective surface area) or promoters (e.g., nitrate ions by formation of ROS; iron ions as additional source of catalyst). The available data reviewed here is limited and the role and mechanisms of individual water components are still not completely understood. Further studies are needed to elucidate the wide spectrum of reactions occurring in complex wastewaters and to increase the adoption of AOTs in UWWTPs.

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“…The degradation of hormones in water under different experimental conditions have been studied in several works and in general, the photolysis achieves degradations in the range of 1-35% for EE2. Results will depend on the type of matrix, power of the light source, and the concentration of the compound, as well as the intrinsic properties such as its molar extinction coefficient and its quantum performance [11], though in general the removals are insignificant.…”

Section: Effect Of Light Sourcementioning

confidence: 99%

EFFECT OF CHEMICAL AND PHYSICAL VARIABLES IN THE PHOTO-ELECTROCHEMICAL REMOVAL OF ESTRIOL (E3) AND 17 α-ETHINYLESTRADIOL (EE2) IN AQUEOUS SOLUTION

Diaz

Pérez-Rivera

Castillo

et al. 2018

J. Chil. Chem. Soc.

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The effect of different variables in the electrochemical removal of estriol (E3) in aqueous solution was studied and it was compared with the removal of 17 α-Ethinylestradiol. The photoelectroxidations were carried out with DSA electrode (Ti/RuO 2), varying the pH, substrate concentration and supporting electrolyte, potential configuration of saline bridge, reactor volume, and light source. Results for both Estriol and 17 α-Ethinylestradiol are similar, showing to be the best removals at concentrations of 500 ug/L of substrate, volumes to be treated of 90 ml of solution, saline bridge of 30 cm in length, voltages between 0.8 and 3, concentration of Na 2 SO 4 of 0.1 M, pH between 6 and10, and UV lamp of 125 W.

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Are UV photolysis and UV/H2O2 process efficient to treat estrogens in waters? Chemical and biological assessment at pilot scale

Cited by 69 publications

References 44 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Impact of water matrix on the removal of micropollutants by advanced oxidation technologies

EFFECT OF CHEMICAL AND PHYSICAL VARIABLES IN THE PHOTO-ELECTROCHEMICAL REMOVAL OF ESTRIOL (E3) AND 17 α-ETHINYLESTRADIOL (EE2) IN AQUEOUS SOLUTION

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Are UV photolysis and UV/H2O2 process efficient to treat estrogens in waters? Chemical and biological assessment at pilot scale

Cited by 69 publications

References 44 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Impact of water matrix on the removal of micropollutants by advanced oxidation technologies

EFFECT OF CHEMICAL AND PHYSICAL VARIABLES IN THE PHOTO-ELECTROCHEMICAL REMOVAL OF ESTRIOL (E3) AND 17 &#945;-ETHINYLESTRADIOL (EE2) IN AQUEOUS SOLUTION

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EFFECT OF CHEMICAL AND PHYSICAL VARIABLES IN THE PHOTO-ELECTROCHEMICAL REMOVAL OF ESTRIOL (E3) AND 17 α-ETHINYLESTRADIOL (EE2) IN AQUEOUS SOLUTION