High-valent iron (Fe(VI), Fe(V), and Fe(IV)) species in water: characterization and oxidative transformation of estrogenic hormones

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F16%3A00464111" target="_blank" >RIV/67985939:_____/16:00464111 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/16:33161401

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c6cp02216b" target="_blank" >http://dx.doi.org/10.1039/c6cp02216b</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c6cp02216b" target="_blank" >10.1039/c6cp02216b</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-valent iron (Fe(VI), Fe(V), and Fe(IV)) species in water: characterization and oxidative transformation of estrogenic hormones

Popis výsledku v původním jazyce

This paper presents solid state synthesis and characterization of tetra-oxy iron(IV) and iron(V) species in their salt forms (Na4FeO4-Fe-IV and K3FeO4-Fe-V). Stability of the synthesized salts, commonly called ferrates, in water was determined by applying the Fe-57 Mossbauer spectroscopy technique. Within 2 s in water, Fe-IV converted into Fe-III while Fe-V transformed into Fe-VI and Fe-III at pH = 8.2. Comparatively, Fe-VI (bought as K2FeO4) remained stable in aqueous solution during the short time period. The oxidative removal efficiency of the high-valent iron species was then tested against five environmentally important estrogenic hormones (estron (E1), 17-beta-estradiol (E2), estriol (E3), 17-alpha-ethinylestradiol (EE2), and diethylstibestrol (DES)) in effluent water of a wastewater treatment plant. Three dosages of iron species (1, 10, and 100 mg L-1) were applied to the effluent water. An increase in the concentration of dosages enhanced the removal of estrogens. Both Fe-V and Fe-VI were effective in degrading estrogens, but Fe-IV showed limited oxidation capacity to transform estrogens. The oxidized products of the estrogens were analyzed using Raman spectroscopy and high-performance liquid chromatography-mass spectrometry (HPLC-MS) techniques. Results demonstrated the transformation of estrogens into low molecular weight oxygenated compounds such as quinone-like and opened-aromatic ring species. A detailed study on E1 by using excess Fe-VI showed the mineralization of the parent compound. The results demonstrate great potential of high-valent iron species in the degradation of endocrine disruptor chemicals like estrogens with several superior aspects including fast reactions, complete degradation and/or formation of benign organic species, and environmentally-acceptable iron oxide by-products.

Název v anglickém jazyce

High-valent iron (Fe(VI), Fe(V), and Fe(IV)) species in water: characterization and oxidative transformation of estrogenic hormones

Popis výsledku anglicky

This paper presents solid state synthesis and characterization of tetra-oxy iron(IV) and iron(V) species in their salt forms (Na4FeO4-Fe-IV and K3FeO4-Fe-V). Stability of the synthesized salts, commonly called ferrates, in water was determined by applying the Fe-57 Mossbauer spectroscopy technique. Within 2 s in water, Fe-IV converted into Fe-III while Fe-V transformed into Fe-VI and Fe-III at pH = 8.2. Comparatively, Fe-VI (bought as K2FeO4) remained stable in aqueous solution during the short time period. The oxidative removal efficiency of the high-valent iron species was then tested against five environmentally important estrogenic hormones (estron (E1), 17-beta-estradiol (E2), estriol (E3), 17-alpha-ethinylestradiol (EE2), and diethylstibestrol (DES)) in effluent water of a wastewater treatment plant. Three dosages of iron species (1, 10, and 100 mg L-1) were applied to the effluent water. An increase in the concentration of dosages enhanced the removal of estrogens. Both Fe-V and Fe-VI were effective in degrading estrogens, but Fe-IV showed limited oxidation capacity to transform estrogens. The oxidized products of the estrogens were analyzed using Raman spectroscopy and high-performance liquid chromatography-mass spectrometry (HPLC-MS) techniques. Results demonstrated the transformation of estrogens into low molecular weight oxygenated compounds such as quinone-like and opened-aromatic ring species. A detailed study on E1 by using excess Fe-VI showed the mineralization of the parent compound. The results demonstrate great potential of high-valent iron species in the degradation of endocrine disruptor chemicals like estrogens with several superior aspects including fast reactions, complete degradation and/or formation of benign organic species, and environmentally-acceptable iron oxide by-products.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

18

Číslo periodika v rámci svazku

28

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

18802-18810

Kód UT WoS článku

000379939100019

EID výsledku v databázi Scopus

2-s2.0-84978758629