Next Article in Journal
A Shotgun Proteomic Platform for a Global Mapping of Lymphoblastoid Cells to Gain Insight into Nasu-Hakola Disease
Next Article in Special Issue
Evolution of Electronic State and Properties of Silver Nanoparticles during Their Formation in Aqueous Solution
Previous Article in Journal
Deep Sequencing Discovery and Profiling of Known and Novel miRNAs Produced in Response to DNA Damage in Rice
Previous Article in Special Issue
Regulation of Proteolytic Activity to Improve the Recovery of Macrobrachium rosenbergii Nodavirus Capsid Protein
Article

The Effect of High Selenite and Selenate Concentrations on Ferric Oxyhydroxides Transformation under Alkaline Conditions

1
Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 84215 Bratislava, Slovakia
2
Institute of Nuclear and Physical Engineering, Slovak Technical University in Bratislava, Ilkovičova 3, 81219 Bratislava, Slovakia
3
Department of Nuclear Reactors, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, V Holešovičkách 2, 18000 Prague, Czech Republic
4
Polymer Institute, Slovak Academy of Sciences, Dúbravská Cesta 9, 84541 Bratislava, Slovakia
5
Department of Environmental Engineering, Faculty of Mining and Geology, VŠB—Technical University of Ostrava, 17 Listopadu 15/2172, 70800 Ostrava-Poruba, Czech Republic
6
Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Mihai V. Putz
Int. J. Mol. Sci. 2021, 22(18), 9955; https://doi.org/10.3390/ijms22189955
Received: 9 August 2021 / Revised: 3 September 2021 / Accepted: 13 September 2021 / Published: 15 September 2021
(This article belongs to the Special Issue Nano-Materials and Methods 3.0)
Iron-based nanomaterials have high technological impacts on various pro-environmental applications, including wastewater treatment using the co-precipitation method. The purpose of this research was to identify the changes of iron nanomaterial’s structure caused by the presence of selenium, a typical water contaminant, which might affect the removal when the iron co-precipitation method is used. Therefore, we have investigated the maturation of co-precipitated nanosized ferric oxyhydroxides under alkaline conditions and their thermal transformation into hematite in the presence of selenite and selenate with high concentrations. Since the association of selenium with precipitates surfaces has been proven to be weak, the mineralogy of the system was affected insignificantly, and the goethite was identified as an only ferric phase in all treatments. However, the morphology and the crystallinity of ferric oxyhydroxides was slightly altered. Selenium affected the structural order of precipitates, especially at the initial phase of co-precipitation. Still, the crystal integrity and homogeneity increased with time almost constantly, regardless of the treatment. The thermal transformation into well crystalized hematite was more pronounced in the presence of selenite, while selenate-treated and selenium-free samples indicated the presence of highly disordered fraction. This highlights that the aftermath of selenium release does not result in destabilization of ferric phases; however, since weak interactions of selenium are dominant at alkaline conditions with goethite’s surfaces, it still poses a high risk for the environment. The findings of this study should be applicable in waters affected by mining and metallurgical operations. View Full-Text
Keywords: ferric oxyhydroxides; Mössbauer spectroscopy; selenium; sorption ferric oxyhydroxides; Mössbauer spectroscopy; selenium; sorption
Show Figures

Figure 1

MDPI and ACS Style

Matulová, M.; Bujdoš, M.; Miglierini, M.B.; Cesnek, M.; Duborská, E.; Mosnáčková, K.; Vojtková, H.; Kmječ, T.; Dekan, J.; Matúš, P.; Urík, M. The Effect of High Selenite and Selenate Concentrations on Ferric Oxyhydroxides Transformation under Alkaline Conditions. Int. J. Mol. Sci. 2021, 22, 9955. https://doi.org/10.3390/ijms22189955

AMA Style

Matulová M, Bujdoš M, Miglierini MB, Cesnek M, Duborská E, Mosnáčková K, Vojtková H, Kmječ T, Dekan J, Matúš P, Urík M. The Effect of High Selenite and Selenate Concentrations on Ferric Oxyhydroxides Transformation under Alkaline Conditions. International Journal of Molecular Sciences. 2021; 22(18):9955. https://doi.org/10.3390/ijms22189955

Chicago/Turabian Style

Matulová, Michaela, Marek Bujdoš, Marcel B. Miglierini, Martin Cesnek, Eva Duborská, Katarína Mosnáčková, Hana Vojtková, Tomáš Kmječ, Július Dekan, Peter Matúš, and Martin Urík. 2021. "The Effect of High Selenite and Selenate Concentrations on Ferric Oxyhydroxides Transformation under Alkaline Conditions" International Journal of Molecular Sciences 22, no. 18: 9955. https://doi.org/10.3390/ijms22189955

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop