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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2019, Volume 70, Issue 10, 3482-3485

https://doi.org/10.37358/RC.19.10.7580

Ioana Carmen Popescu (Hostuc), Ligia Stoica, Carolina Constantin, Ana Maria Stanescu

Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O

Abstract:

The paper aims to present research results obtained at the study of equilibrium and kinetics of U(VI)aq sorption on in situ generated Fe2O3 x nH2O from model solutions. The studied systems represent U(VI) solutions with CU(VI) = 5-30 mg·L-1 for which maximum U(VI) removal efficiencies (%RU(VI) = 95.98) on in situ generated Fe2O3’”nH2O were obtained in the following working conditions: pH = 8.75, tcontact = 30 min, [U(VI)] : [Fe(III)] =1:75 and stirring rate 250 RPM. The Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models were used to study U(VI) sorption equilibrium. Langmuir isotherm with the correlation coefficient R2 (0.9808) suggests that it involves physical interactions. Freundlich (R2 = 0.8349) and Temkin (R2 = 0.8715) models describe well the sorption process suggesting that there also exists a chemical component, complexing and/or co-precipitation. The kinetic modelling according to the pseudo-first and pseudo-second order models, respectively has demonstrated that the U(VI) sorption equilibrium follows the pseudo-second order equation suggesting a chemical component of the process.
Keywords:
uranium; sorption/precipitate flotation; adsorption isotherms modelling; kinetics

Issue: 2019, Volume 70, Issue 10
Pages: 3482-3485
Publication date: 2019/11/15
https://doi.org/10.37358/RC.19.10.7580
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
POPESCU (HOSTUC), I.C., STOICA, L., CONSTANTIN, C., STANESCU, A.M., Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O, Rev. Chim., 70(10), 2019, 3482-3485.

Vancouver
Popescu (Hostuc) IC, Stoica L, Constantin C, Stanescu AM. Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O. Rev. Chim.[internet]. 2019 Oct;70(10):3482-3485. Available from: https://doi.org/10.37358/RC.19.10.7580


APA 6th edition
Popescu (Hostuc), I.C., Stoica, L., Constantin, C. & Stanescu, A.M. (2019). Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O. Revista de Chimie, 70(10), 3482-3485. https://doi.org/10.37358/RC.19.10.7580


Harvard
Popescu (Hostuc), I.C., Stoica, L., Constantin, C., Stanescu, A.M. (2019). 'Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O', Revista de Chimie, 70(10), pp. 3482-3485. https://doi.org/10.37358/RC.19.10.7580


IEEE
I.C. Popescu(Hostuc), L. Stoica, C. Constantin, A.M. Stanescu, "Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O". Revista de Chimie, vol. 70, no. 10, pp. 3482-3485, 2019. [online]. https://doi.org/10.37358/RC.19.10.7580


Text
Ioana Carmen Popescu(Hostuc), Ligia Stoica, Carolina Constantin, Ana Maria Stanescu,
Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O,
Revista de Chimie,
Volume 70, Issue 10,
2019,
Pages 3482-3485,
ISSN 2668-8212,
https://doi.org/10.37358/RC.19.10.7580.
(https://revistadechimie.ro/Articles.asp?ID=7580)
Keywords: uranium; sorption/precipitate flotation; adsorption isotherms modelling; kinetics


RIS
TY - JOUR
T1 - Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O
A1 - Popescu (Hostuc), Ioana Carmen
A2 - Stoica, Ligia
A3 - Constantin, Carolina
A4 - Stanescu, Ana Maria
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2019
VL - 70
IS - 10
SP - 3482
EP - 3485
UR - https://doi.org/10.37358/RC.19.10.7580
KW - uranium
KW - sorption/precipitate flotation
KW - adsorption isotherms modelling
KW - kinetics
ER -


BibTex
@article{RevCh2019P3482,
author = {Popescu (Hostuc) Ioana Carmen and Stoica Ligia and Constantin Carolina and Stanescu Ana Maria},
title = {Equilibrium and Kinetics of U(VI)aq Adsorption on in situ Generated Fe2O3. nH2O},
journal = {Revista de Chimie},
volume = {70},
number = {10},
pages = {3482-3485},
year = {2019},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.19.10.7580},
url = {https://revistadechimie.ro/Articles.asp?ID=7580}
}
 
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