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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

  • Czech description

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

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

  • 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