Selenite sorption onto goethite: isotherm and ion-competitive studies, and effect of pH on sorption kinetics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00334546" target="_blank" >RIV/68407700:21340/19:00334546 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s11696-019-00847-1" target="_blank" >https://doi.org/10.1007/s11696-019-00847-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11696-019-00847-1" target="_blank" >10.1007/s11696-019-00847-1</a>
Alternative languages
Result language
angličtina
Original language name
Selenite sorption onto goethite: isotherm and ion-competitive studies, and effect of pH on sorption kinetics
Original language description
Sorption of oxyanions onto ferric oxyhydroxides’ surfaces is naturally occurring process with advantageous implications in remediation of contaminated waters or management of landfills. Therefore, this paper provides information on selenite sorption onto goethite, which is one of the most common oxyhydroxides in the environment. Our results showed that selenite sorption was well described by the pseudo-second-order kinetic model, as well as by Langmuir isotherm. This suggests chemisorption as a rate-controlling step and formation of selenite monolayer on goethite surface with relatively high 83.8 μmol/g maximum sorption capacity at pH 3, which was determined for initial selenite concentration in the range of 45–550 μmol/L in 0.5 g/L (m/v) goethite suspension. The Mössbauer analysis revealed only marginal structural changes in goethite during sorption. Our results also showed that pH significantly affects the overall sorption rate constant with the highest values at the acidic region. Study on competitive sorption behaviour highlighted significant influence of phosphate on selenite sorption. There was no competition for sorption positions with excessive concentrations of sulphate and chloride ions. However, equimolar concentrations of sulphate and chloride led to changes in selenite sorption efficiency. Our results showed that selenite sorption onto goethite is a viable method for selenite removal and, thus, goethite can be successfully applied as a component in commercial composite sorbents or in geochemical barriers.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Papers
ISSN
2585-7290
e-ISSN
1336-9075
Volume of the periodical
73
Issue of the periodical within the volume
June
Country of publishing house
SK - SLOVAKIA
Number of pages
11
Pages from-to
2975-2985
UT code for WoS article
000488930200011
EID of the result in the Scopus database
2-s2.0-85073674753