Comparative endocrine disrupting compound removal from real wastewater by UV/Cl and UV/H2O2: Effect of pH, estrogenic activity, transformation products and toxicity

Chaves, Fernanda P.; Gomes, Giselle; Della-Flora, Alexandre; Dallegrave, Alexsandro; Sirtori, Carla; Saggioro, Enrico Mendes; Bila, Daniele Maia

doi:10.1016/j.scitotenv.2020.141041

Cited by 50 publications

(13 citation statements)

References 77 publications

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“…Many studies − have shown that ultraviolet (UV) light with a wavelength lower than 300 nm can effectively decompose peroxide to produce free radicals (see Table ). 254 nm short wave UV light and 185 nm vacuum ultraviolet (VUV) light are the two most used UV light sources in the field of photochemical advanced oxidation technologies (AOTs).…”

Section: Photochemical Removalmentioning

confidence: 99%

Review on Removal of SO₂, NO_x, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

Wang

Liu

2021

Energy Fuels

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Emission of SO2, NO x , mercury (Hg), and arsenic (As) from flue gas has become a great public concern due to their hazards for human health and ecosystems. Simultaneous removal of multipollutants (two or more of SO2, NO x , Hg, and As) has good development prospects due to its simple system and low cost. Although many multipollutant simultaneous removal technologies have been developed, green oxidation absorption is one of the most promising technologies because it can not only make full use of the existing WFGD devices, but also its treatment process is clean. This review analyzes the latest research advances in the removal of SO2, NO x , Hg, and As from flue gas using green oxidation absorption technologies. The performance, mechanism, and kinetics of SO2, NO x , Hg, and As removal are reviewed. The merits and drawbacks of these green oxidation absorption technologies and the potential research directions are commented on. This review indicates that each technology has its own advantages and disadvantages in terms of removal efficiency, cost, reliability, and product post-treatment. Photochemical and electrochemical removal technologies have a high free radical yield and pollutant removal efficiency, but they have complex systems, high energy consumption, or unreliable systems. Metal oxide-activated peroxide oxidation technology has a good prospect due to its simple process, low device requirements, and recyclability of catalysts. However, it also has shortcomings such as a low free radical yield and easy deactivation of catalysts. Other technologies also have some disadvantages, such as high cost, low free radical yield, difficult separation of products, complex equipment, and/or low reliability. Synergic use of multitechnologies may be a promising strategy because it can make up for the shortcomings of each technology.

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Section: Photochemical Removalmentioning

confidence: 99%

Review on Removal of SO₂, NO_x, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

Wang

Liu

2021

Energy Fuels

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“…16–20 Notably, UV-based AOPs can be selectively applied to degrade BPA, such as UV combined with H 2 O 2 , chlorine, chloramine, persulfate, or peroxymonosulfate. 21–24 Chaves et al found that the BPA removal rate reached 55% in the UVA/H 2 O 2 process (88 μM H 2 O 2 ) for 120 min. 23 Sharma et al have pointed out that the BPA degradation increased in the UV-C/sodium persulfate oxidation system due to the BPA molecules being attacked by the SO 4 ˙ − radicals.…”

Section: Introductionmentioning

confidence: 99%

“…21–24 Chaves et al found that the BPA removal rate reached 55% in the UVA/H 2 O 2 process (88 μM H 2 O 2 ) for 120 min. 23 Sharma et al have pointed out that the BPA degradation increased in the UV-C/sodium persulfate oxidation system due to the BPA molecules being attacked by the SO 4 ˙ − radicals. 25 Over recent years, the UV/nitrate (NO 3 − ) system has received growing attention because NO 3 − is a naturally occurring ion involved in the nitrogen cycle in the environment, and the system can effectively decompose EDCs ( e.g.…”

Section: Introductionmentioning

confidence: 99%

UV light irradiation combined with nitrate for degradation of bisphenol A: kinetics, transformation pathways, and acute toxicity assessment

Luo

Tan

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…However, many advanced oxidation processes (AOPs) especially the UV-based AOPs can be selectively applied to degrade BPA, such as UV combined with H2O2, chlorine, persulfate (PS), or peroxymonosulfate (PMS) (Chaves et al 2020;Rodríguez-Chueca et al 2019;Sharma et al 2015). Chaves et al (2020) found that the BPA decomposition rate reached 55% in UVA/H2O2 process (88μM H2O2) for 120 min. Sharma et al (2016) have pointed out that the BPA degradation increased in UV-C/SPS oxidation system as a result of the BPA molecules attacked by the SO4 •radicals.…”

Section: Introductionmentioning

confidence: 99%

“…Conventional methods of water purification (e.g., coagulation, filtration, adsorption, and biodegradation) are insufficient for completely degrade EDCs, especially BPA made up of strong bonds hence (Gmurek et al 2017;Luo et al 2014). However, many advanced oxidation processes (AOPs) especially the UV-based AOPs can be selectively applied to degrade BPA, such as UV combined with H2O2, chlorine, persulfate (PS), or peroxymonosulfate (PMS) (Chaves et al 2020;Rodríguez-Chueca et al 2019;Sharma et al 2015). Chaves et al (2020) found that the BPA decomposition rate reached 55% in UVA/H2O2 process (88μM H2O2) for 120 min.…”

Section: Introductionmentioning

confidence: 99%

UV Light Combined with Nitrate Remove Bisphenol A: Kinetics, Transformation Pathways, and Acute Toxicity Assessment

Luo

Tan

et al. 2021

Preprint

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As a powerful endocrine disruptor, bisphenol A (BPA) is a serious threat to human health. In this study, low-pressure UV lamp (LP-UV) photolysis nitrate was used to degrade BPA in different aqueous solutions. Results showed that BPA could be decomposed efficiently in the UV/nitrate process. ·OH played a significant role in the UV/nitrate process, and the steady-state concentration of ·OH ([·OH]ss) was calculated to be 5.26×10-15 M under control conditions. Moreover, the contributions of UV irradiation (4.1%), ·OH (52.7%), and reactive nitrogen species (43.2%) were obtained. The observed rate constant of BPA degradation (kobs) increased with nitrate concentration since more activity species were generated in high nitrate concentration. BPA degradation rate significantly accelerated as the pH value rose, it was ascribed to the increase of the molar absorption coefficient and the portion of ionic BPA. However, kobs declined with increasing BPA concentration result from the inner filter effect and the competition of more generated intermediate products. The increasing decomposition of BPA with the addition of HCO3-/CO32- (0~10 mM), which could be explained as HCO3-/CO32- scavenged ·OH resulting in the accumulation of ·NO2. The effect of Cl- (0~20 mM) can be ignored, which suggested reactive chlorine radicals degraded BPA effectively. The kobs reduced acutely when NOM (0~5mg-C/L) existed in the solution, this could be ascribed to the dual role of NOM inner filter effect and reactive radicals scavenging effect. Further, several degradation products were detected and possible transformation pathways were put forward. Remarkably, the acute toxicity of BPA was slightly enhanced then decayed in the UV/nitrate process.

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Comparative endocrine disrupting compound removal from real wastewater by UV/Cl and UV/H2O2: Effect of pH, estrogenic activity, transformation products and toxicity

Cited by 50 publications

References 77 publications

Review on Removal of SO₂, NO_x, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

Review on Removal of SO₂, NO_x, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

UV light irradiation combined with nitrate for degradation of bisphenol A: kinetics, transformation pathways, and acute toxicity assessment

UV Light Combined with Nitrate Remove Bisphenol A: Kinetics, Transformation Pathways, and Acute Toxicity Assessment

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Comparative endocrine disrupting compound removal from real wastewater by UV/Cl and UV/H2O2: Effect of pH, estrogenic activity, transformation products and toxicity

Cited by 50 publications

References 77 publications

Review on Removal of SO2, NOx, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

Review on Removal of SO2, NOx, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

UV light irradiation combined with nitrate for degradation of bisphenol A: kinetics, transformation pathways, and acute toxicity assessment

UV Light Combined with Nitrate Remove Bisphenol A: Kinetics, Transformation Pathways, and Acute Toxicity Assessment

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Review on Removal of SO₂, NO_x, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology

Review on Removal of SO₂, NO_x, Mercury, and Arsenic from Flue Gas Using Green Oxidation Absorption Technology