Photodegradation of 17β-estradiol in water by UV–vis/Fe(III)/HO system

Feng, Xiaochi; Tu, Jianfeng; Ding, Shimin; Wu, Feng; Deng, Nansheng

doi:10.1016/j.jhazmat.2005.06.039

Cited by 18 publications

(7 citation statements)

References 18 publications

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“…One of the most prominent structures of phosphomolybdate is [P 2 Mo 5 O 23 ] 6− . Transition metal ions also have possible application in the dyes removal by coordinating with dyes containing –N=N–, –C=C– and heterocyclic compounds [17,18]. In particular, nickel is a vital element to contribute to the removal of dyes [19,20].…”

Section: Introductionmentioning

confidence: 99%

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Chen

Zhao

et al. 2019

Molecules

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The magnetic adsorbent, Fe3O4@[Ni(HL)2]2H2[P2Mo5O23]·2H2O (Fe3O4@1), is synthesized by employing the nanoparticles Fe3O4 and polyoxometalate hybrid 1. Zero-field-cooled (ZFC) and field-cooled (FC) curves show that the blocking temperature of Fe3O4@1 was at 120 K. Studies of Fe3O4@1 removing cationic and anionic dyes from water have been explored. The characterization of Fe3O4@1, effects of critical factors such as dosage, the concentration of methylene blue (MB), pH, adsorption kinetics, isotherm, the removal selectivity of substrate and the reusability of Fe3O4@1 were assessed. The magnetic adsorbent displayed an outstanding removal activity for the cationic dye at a broad range of pH. The adsorption kinetics and isotherm models revealed that the adsorption process of Fe3O4@1 was mainly governed via chemisorption. The maximum capacity of Fe3O4@1 adsorbing substance was 41.91 mg g−1. Furthermore, Fe3O4@1 showed its high stability by remaining for seven runs of the adsorption-desorption process with an effective MB removal rate, and could also be developed as a valuable adsorbent for dyes elimination from aqueous system.

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Section: Introductionmentioning

confidence: 99%

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Chen

Zhao

et al. 2019

Molecules

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“…Several studies, based on (AOPs) such as: photocatalytic degradation [1][2][3][4][5], ozonation [6,7], H 2 O 2 photolysis (UV/H 2 O 2 ) [8], photo-Fenton (H 2 O 2 /Fe 2+ /UV) [9][10][11][12], have investigated and showed the degradation of endocrine disrupting chemicals (EDCs).…”

Section: Introductionmentioning

confidence: 99%

“…In order to decrease risks of E2 toxicity in water and wastewater, the degradation of this molecule until its removal were investigated by several authors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Except that according to literature, no study has shown the degradation of the 17β-estradiol using Electro-Fenton process.…”

Section: Introductionmentioning

confidence: 99%

Removal of 17β-Estradiol by Electro-Fenton Process

Naimi¹,

Bellakhal²

2012

MSA

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The electrochemical advanced oxidation method "Electro-Fenton" has been applied to remove 17β-estradiol (17β) estra-1,3,5(10)-triéne-3,17-diol) in aqueous-acetonitrile mixture. This endocrine disrupting is a steroid hormone, releases from humans, animals and residual pharmaceuticals into the environmental water and usually causes suspected undesirable effects in aquatic organisms. The degradation of this organic compound by Electro-Fenton process was showed using a carbon felt cathode and platinum anode. The evolution of the concentration during treatment was followed up by high performance liquid chromatography (HPLC). The influence of operating conditions on the degradation of 17β-estradiol by Electro-Fenton step, such as initial concentration and catalyst concentration, has been investigated and discussed. We showed that the degradation reaction obeyed apparent first-order reaction kinetics, with absolute rate constant determined as 5.12 × 10 9 M −1 ·s −1 by competitive kinetics method taking Benzoic Acid as reference compound. The results confirm the efficiency of the Electro-Fenton process to degrade organic pollutant in aqueous-acetonitrile mixture. Figure 1. Molecular structure of 17β-estradiol.

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“…).Devido as suas características os desreguladores endócrinos são transportados ou reagem com alguns compostos gerando assim um ciclo que está representado na Figura 1. Representação das possíveis fontes de contaminação por EDs(CAMPBELL et al, 2006).Atualmente, os métodos estudados para a remoção dos desreguladores endócrinos presentes na água são os processos oxidativos avançados (POA) como UV/O 3(IRMAK et al, 2005;WESTERHOFF et al,2005), fotocatálise (H 2 O 2 /UV e TiO 2 ) (ROSENFELDT et al, 2004; ZHANG et al, 2007), eletrólise(PAUWELS et al, 2006) e ozonização(IRMAK et al, 2005;MANIERO et al, 2008); fotodegradação por UV-vis/Fe(III)/ H 2 O 2(FENG et al, 2005), biodegradação (ROBINSON; HELLOU, 2009), cloração (HU et al, 2003; DEBORDE et al, 2004), entre outros. As características dos estrogênios são importantes para saber quais as rotas que serão utilizadas por estas substâncias no ambiente e também os métodos que serão utilizados para a sua determinação analítica.…”

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Uso de bioindicador de efeito endócrino e validação do método para determinação de hormônios na água da Represa Municipal de São José do Rio Preto, SP

Cordeiro¹

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Among the several xenobiotics that human activities have produced in the last decades, endocrine disruptors (EDs), including hormones, have been drawing the attention of researches due to the effects they can cause in animals. Those effects may result in hermaphrodite characteristics in fishes and amphibians, testicular growth inhibition, spermatogenesis inhibition, eggs fertilization capacity decrease, and changes in the reproductive behavior of living beings. Concentrations of only 10 ng L-1 of hormones in the aquatic medium are capable of causing endocrine effects in organisms. In this study, the natural hormone 17β-estradiol and the synthetic ones levonorgestrel and 17α-ethinylestradiol were determined in the waters of the São José do Rio Preto (SP) dam. The first step of this study was the validation of the methods according to ANVISA's Resolution 899. The detection, quantification, and lower quantification limits of the method for determining 17α-ethinylestradiol were, respectively, 25, 100, and 100 ng L-1. The linearity, relative standard deviation, accuracy, and average recovery of the method for determining 17α-ethinylestradiol were, respectively, R equal to 0.98, 3.23%, 100.53%, and 89.95%. The detection, quantification, and lower quantification limits of the method for determining 17βestradiol were, respectively, 100, 150, and 150 ng L-1. The linearity, relative standard deviation, accuracy, and average recovery of the method for determining 17β-estradiol were, respectively, R equal to 0.99, 3.43%, 106.16%, and 89.05%. For levonorgestrel, the detection, quantification, and lower quantification limits of the method were, respectively, 50, 150, and 150 ng L-1. The linearity, relative standard deviation, accuracy, and average recovery of the method for determining levonorgestrel were, respectively, R equal to 0.98, 3.48%, 105.15%, and 86.45%. In the second step of this research, samples collected in the São José do Rio Preto (SP) dam were analyzed regarding the presence of hormones. For extracting the hormones, SPE cartridges were used followed by HPLC/FLU/DAD. The results indicated the absence of the studied hormones down to the detection limits of the methods employed. Vitellogenin (VTG) analyses were performed in the blood plasma of fishes captured in the beforementioned dam, of the species Geophagus brasiliensis (pearl cichlid or pearl eartheater), Satanoperca pappaterra (Pantanal eartheater or Paraguay River eartheater), and Tilapia rendalli (redbreast tilapia). It was observed that male fishes had VTG concentrations between 152.4 and 2,841.8 ng mL-1. That indicates that there are substances with endocrine effect in the dam water, although one cannot say the studied hormones are among them.

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Photodegradation of 17β-estradiol in water by UV–vis/Fe(III)/HO system

Cited by 18 publications

References 18 publications

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Removal of 17β-Estradiol by Electro-Fenton Process

Uso de bioindicador de efeito endócrino e validação do método para determinação de hormônios na água da Represa Municipal de São José do Rio Preto, SP

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