Degradation of hormones in tap water by heterogeneous solar TiO2-photocatalysis: Optimization, degradation products identification, and estrogenic activity removal

Padovan, Rodrigo Nogueira; Carvalho, Lucas Sponton de; Bergo, Patrícia Luísa de Souza; Xavier, Chubraider; Leitão, Andrei; Neto, Álvaro José dos Santos; Lanças, Fernando Mauro; Azevedo, Eduardo Bessa

doi:10.1016/j.jece.2021.106442

Cited by 27 publications

(5 citation statements)

References 30 publications

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“…Although the advanced investigation of the products of biocatalytic conversion was not the main goal of the study, obtained data confirmed the possible dual mechanisms of enzymatic action. Nevertheless, presented results indicate that raising products of EE2 removal are less toxic than the parent compound and highlight the role of simultaneous adsorption and also possibility to adsorb both, parent EE2 and products of enzymatic conversion [46]. These results allow us to conclude that the proposed method of EE2 removal by synergistic enzymatic conversion and adsorption can be effective not only considering efficiency but also in terms of low toxicity and low estrogenic activity of post-treatment solution.…”

Section: Toxicity and Estrogenic Activitymentioning

confidence: 59%

Inorganic Oxide Systems as Platforms for Synergistic Adsorption and Enzymatic Conversion of Estrogens from Aqueous Solutions: Mechanism, Stability and Toxicity Studies

et al. 2022

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Section: Toxicity and Estrogenic Activitymentioning

confidence: 59%

Inorganic Oxide Systems as Platforms for Synergistic Adsorption and Enzymatic Conversion of Estrogens from Aqueous Solutions: Mechanism, Stability and Toxicity Studies

et al. 2022

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“…The photocatalytic membrane reactor PVDF/ TiO2 with UV achieved the highest removal efficiency at 96.7 ± 1.4 percent. Comparable studies by Padovan et al [42] on solar TiO2-photocatalytic degradation of hormones in tap water achieved 85 percent removal after 3 h. Additionally, Yang et al [43] reported higher degradation of bisphenol A (BPA) using the Fe-TiO2/ PVDF membrane (69.9%) compared to the PVDF membrane (45.1%) over 180 min.…”

Section: 2) Surface Morphology Propertiesmentioning

confidence: 95%

“…The major ion peaks with m z -1 of 268, 269, and 285 were observed in the photodegradation product of E1. It can be identified as lumiestrone, has the same molecular weight as E1 and also activated human estrogen receptor [42,45].…”

Section: 2) Surface Morphology Propertiesmentioning

confidence: 99%

Monitoring of Estrone from Hospital Wastewater and its Removal by Photocatalytic Membrane Reactor

Karnjanamit,

Thammakhet-Buranachai,

Jutaporn

et al. 2024

App. Envi. Res.

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Steroid hormones, classified as endocrine-disrupting compounds (EDCs), pose significant environmental and health concerns due to their persistence and potential adverse effects. This study investigates the presence of estrone (E1) in hospital wastewater and the efficiency of E1 removal through a photocatalytic membrane reactor (PMR). Wastewater samples were collected from two hospitals with different wastewater treatment processes. The concentration of E1 was analyzed using a combination of solid phase extraction (SPE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). The PMR experimental setup involved a polyvinylidene fluoride (PVDF) membrane incorporated with 1 wt% titanium dioxide (PVDF/TiO2). The PMR performance was evaluated with and without UVC radiation. The membranes were characterized for their water contact angle (WCA) and surface morphology. The maximum concentration of E1 in the hospital wastewater was 2.46 ± 1.90 ng L-1. The PMR, operated for 180 min, demonstrated that PVDF/TiO2 (UV) exhibited the highest E1 removal efficiency (96.7 ± 1.4%). This superior performance was attributed to the synergistic effect of PVDF/TiO2 membrane filtration combined with UV irradiation, enhancing the removal capacity. The removal of E1 in the PVDF/TiO2 membrane (36.5 ± 2.7%) surpassed that of the PVDF membrane (32.6 ± 7.8%). The kinetics analysis indicated that the degradation of E1 followed pseudo first-order kinetics. These findings underscore the potential of PMR technology, specifically employing PVDF/TiO2 membranes with UV irradiation, for efficient removal of E1 from hospital wastewater, offering insights for future applications in mitigating micropollutant release into the environment.

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“…AOPs are treatment technologies that involve the generation of highly reactive species, such as hydroxyl radicals, to degrade micropollutants. Among classical AOPs, UV/H 2 O 2 , Fenton's reagent, and photocatalysis with TiO 2 [22][23][24][25][26] can be cited, but other processes such as membrane filtration [27,28] and biological treatment [29,30] are also used. Overall, the micropollutant removal technology selection depends on several factors, including the type and concentration of micropollutants, the characteristics of the water or wastewater to be treated, and the treatment objectives.…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel Synthesis of New TiO2 Ball/Activated Carbon Photocatalyst and Its Application for Degradation of Three Hormones: 17α-EthinylEstradiol, Estrone, and β-Estradiol

Mouchtari

Mersly

Belkodia

et al. 2023

Toxics

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Many approaches have been investigated to eliminate pharmaceuticals in wastewater treatment plants during the last decades. However, a lack of sustainable and efficient solutions exists for the removal of hormones by advanced oxidation processes. The aim of this study was to synthesize and test new photoactive bio composites for the elimination of these molecules in wastewater effluents. The new materials were obtained from the activated carbon (AC) of Arganian spinosa tree nutshells and titanium tetrachloride by the sol gel method. SEM analysis allowed one to confirm the formation of TiO2 particles homogeneously dispersed at the surface of AC with a controlled titanium dioxide mass ratio, a specific TiO2 anatase structure, and a highly specific surface area, evidenced by ATG, XRD, and BET analysis, respectively. The obtained composites were revealed to quantitatively absorb carbamazepine (CBZ), which is used as a referred pharmaceutical, and leading to its total elimination after 40 min under irradiation with the most effective material. TiO2 high content disfavors CBZ adsorption but improves its degradation. In the presence of the composite, three hormones (17α-ethinylestradiol, estrone, and β-estradiol) are partially adsorbed onto the composite and totally degraded after 60 min under UV light exposure. This study constitutes a promising solution for the efficient treatment of wastewater contaminated by hormones.

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Degradation of hormones in tap water by heterogeneous solar TiO2-photocatalysis: Optimization, degradation products identification, and estrogenic activity removal

Cited by 27 publications

References 30 publications

Inorganic Oxide Systems as Platforms for Synergistic Adsorption and Enzymatic Conversion of Estrogens from Aqueous Solutions: Mechanism, Stability and Toxicity Studies

Inorganic Oxide Systems as Platforms for Synergistic Adsorption and Enzymatic Conversion of Estrogens from Aqueous Solutions: Mechanism, Stability and Toxicity Studies

Monitoring of Estrone from Hospital Wastewater and its Removal by Photocatalytic Membrane Reactor

Sol-Gel Synthesis of New TiO2 Ball/Activated Carbon Photocatalyst and Its Application for Degradation of Three Hormones: 17α-EthinylEstradiol, Estrone, and β-Estradiol

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