High-valent iron (Fe(VI), Fe(V), and Fe(IV)) species in water: characterization and oxidative transformation of estrogenic hormones
The result's identifiers
Result code in 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>
Alternative codes found
RIV/61989592:15310/16:33161401
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
High-valent iron (Fe(VI), Fe(V), and Fe(IV)) species in water: characterization and oxidative transformation of estrogenic hormones
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DJ - Pollution and water control
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Chemistry Chemical Physics
ISSN
1463-9076
e-ISSN
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Volume of the periodical
18
Issue of the periodical within the volume
28
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
18802-18810
UT code for WoS article
000379939100019
EID of the result in the Scopus database
2-s2.0-84978758629