Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-24T15:09:22.711Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis of a Mg-Cd-Al layered double hydroxide and sorption of selenium

Published online by Cambridge University Press:  01 January 2024

Birte Hansen ,
Hilde Curtius  and
Reinhard Odoj
Birte Hansen*
Affiliation:
Institute for Energy Research - Safety Research and Reactor Technology (IEF-6), Research Centre Jülich GmbH, D-52428 Jülich, Germany
Hilde Curtius
Affiliation:
Institute for Energy Research - Safety Research and Reactor Technology (IEF-6), Research Centre Jülich GmbH, D-52428 Jülich, Germany
Reinhard Odoj
Affiliation:
Institute for Energy Research - Safety Research and Reactor Technology (IEF-6), Research Centre Jülich GmbH, D-52428 Jülich, Germany
*
* E-mail address of corresponding author: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Leaching experiments with metallic uranium-aluminum research-reactor fuel elements in repository-relevant MgCl2-rich salt brine (brine 2) were performed. A Mg-Al layered double hydroxide (LDH) with chloride as the interlayer anion was identified as a crystalline secondary-phase component. In the present study, the incorporation of Cd into the structure of the Mg-Al-Cl LDH was investigated. Synthesis by a coprecipitation method was performed and the Mg-Cd-Al-Cl LDH obtained was characterized. The sorption behavior of selenium on the LDH was investigated in water, clay pore-water (Mont-Terri-type), and brine 2. Using a LDH concentration of 10 g/L, the sorption kinetics were rapid and equilibrium was reached within 12 h. The sorption of selenium decreased with increasing amount of chloride anions in the solutions. The chloride anions acted as competing anions for the sorption of selenium. The effect of pH on selenium sorption was investigated and a large buffer capacity of the LDH was observed. For the range of selenium concentration used, linear sorption isotherms were obtained which obeyed the Freundlich and Dubinin-Radushkevich models. From these, the energies of selenium sorption were calculated to be in the range of ion-exchange processes.

Keywords

Clay Pore-waterLayered Double HydroxidesMgCl2-rich Salt BrineSorption
Type
Article
Information
Clays and Clay Minerals , Volume 57 , Issue 3 , June 2009 , pp. 330 - 337
Copyright
Copyright © The Clay Minerals Society 2009

References

Atun, G. Bilgin, B. and Mardinli, A., 1996 Sorption of cesium on montmorillonite and effects of salt concentration Journal of Radioanalytical and Nuclear Chemistry, Articles 211 435–442 10.1007/BF02039709.CrossRefGoogle Scholar
Cavani, F. Trifirò, F. and Vaccari, A., 1991 Hydrotalcite-type anionic clays: preparation, properties and applications Catalysis Today 11 173–301 10.1016/0920-5861(91)80068-K.CrossRefGoogle Scholar
Châtelet, L. Bottero, J.Y. Yvon, J. and Bouchelaghem, A., 1996 Competition between monovalent and divalent anions for calcined and uncalcined hydrotalcite: anion exchange and adsorption sites Colloids and Surfaces, A: Physicochemical and Engineering Aspects 111 167–175 10.1016/0927-7757(96)03542-X.CrossRefGoogle Scholar
Curtius, H. and Ufer, K., 2007 Eu incorporation behavior of a Mg-Al-Cl layered double hydroxide Clays and Clay Minerals 55 354–360 10.1346/CCMN.2007.0550403.CrossRefGoogle Scholar
Curtius, H., Kaiser, G., Paparigas, Z., Ufer, K., Müller, E., Enge, R., and Brücher, H. (2006) Untersuchungen zum Verhalten von Forschungsreaktor-Brennelementen (FR-BE) in den Wirtsgesteinsformationswässern möglicher Endläger (Investigations of the behavior of research reactor fuel elements in host rock waters of possible repositories). Berichte des Forschungszentrums Jülich, 4237, ISSN 0944-2952.Google Scholar
Curtius, H. Paparigas, Z. and Kaiser, G., 2008 Sorption of selenium on Mg-Al and Mg-Al-Eu layered double hydroxides Radiochimica Acta 96 651–655 10.1524/ract.2008.1549.CrossRefGoogle Scholar
Das, J. Das, D. Dash, G.P. and Parida, K.M., 2002 Studies on Mg/Fe hydrotalcite-like-compound (HTlc) — I. Removal of inorganic selenite () from aqueous medium Journal of Colloid and Interface Science 251 26–32 10.1006/jcis.2002.8319.CrossRefGoogle ScholarPubMed
Das, N.N. Konar, J. Mohanta, M.K. and Srivastava, S.C., 2004 Adsorption of Cr(VI) and Se(IV) from their aqueous solutions onto Zr4+-substituted ZnAl/MgAl-layered double hydroxides: effect of Zr4+ substitution in the layer Journal of Colloid and Interface Science 270 1–8 10.1016/S0021-9797(03)00400-4.CrossRefGoogle ScholarPubMed
Duff, M.C. Coughlin, J.U. and Hunter, D.B., 2002 Uranium co-precipitation with iron oxide minerals Geochimica et Cosmochimica Acta 66 3533–3547 10.1016/S0016-7037(02)00953-5.CrossRefGoogle Scholar
Khan, S.A. Reman, R.-U. and Khan, M.A., 1995 Adsorption of Cs(I), Sr(II) and Co(II) on Al2O3 Journal of Radioanalytical and Nuclear Chemistry, Articles 190 81–96 10.1007/BF02035639.CrossRefGoogle Scholar
Lv, L. He, J. Wei, M. Evans, D.G. and Zhou, Z., 2007 Treatment of high fluoride concentration water by MgAl-CO3 layered double hydroxides: Kinetic and equilibrium studies Water Research 41 1534–1542 10.1016/j.watres.2006.12.033.CrossRefGoogle ScholarPubMed
Miyata, S., 1975 The synthesis of hydrotalcite-like compounds and their structures and physico-chemical properties — I: The systems , Mg2+-Al3+-Cl−, Mg2+-Al3+-ClO4−\$\end{document}, Ni2+-Al3+-Cl− and Zn2+-Al3+-Cl− Clays and Clay Minerals 23 369–375 10.1346/CCMN.1975.0230508.CrossRefGoogle Scholar
Miyata, S., 1983 Anion-exchange properties of hydrotalcite-like compounds Clays and Clay Minerals 31 305–311 10.1346/CCMN.1983.0310409.CrossRefGoogle Scholar
Miyata, S. and Kumura, T., 1973 Synthesis of new hydrotalcite-like compounds and their physico-chemical properties Chemistry Letters 843–848.CrossRefGoogle Scholar
Reichle, W.T., 1986 Synthesis of anionic clay minerals (mixed metal hydroxides, hydrotalcite) Solid State Ionics 22 135–141 10.1016/0167-2738(86)90067-6.CrossRefGoogle Scholar
Riedel, E., 1990 Anorganische Chemie (Inorganic Chemistry) Berlin, New York Walter de Gruyter.Google Scholar
Vichi, F.M. and Alves, O.L., 1997 Preparation of Cd/Al layered double hydroxides and their intercalation reactions with phosphonic acids Journal of Materials Chemistry 7 1631–1634 10.1039/a606866i.CrossRefGoogle Scholar
Weiss, A. and Toth, E. (1996) Untersuchungen zur Synthese, Quellungseigenschaften und Anionenaustausch von kristallchemisch modifizierten Doppelhydroxiden vom Hydrotalkit-Typ (Investigations of synthesis, swelling properties and anion exchange of crystallochemical modified double hydroxides of the hydrotalcite type). Pp. 267–276 in: Contributions to the annual DTTG meeting Freiberg, Germany (Wolf, D., Starke, R., and Kleeberg, R., editors). Available at: . ISSN 1432–7007.Google Scholar
Yang, L. Shahrivari, Z. Liu, P.K.T. Sahimi, M. and Tsotsis, T.T., 2005 Removal of trace levels of arsenic and selenium from aqueous solutions by calcined and uncalcined layered doublehydroxides (LDH) Industrial & Engineering Chemistry Research 44 6804–6815 10.1021/ie049060u.CrossRefGoogle Scholar
You, Y. Vance, G.F. and Zhao, H., 2001 Selenium adsorption on Mg-Al and Zn-Al layered double hydroxides Applied Clay Science 20 13–25 10.1016/S0169-1317(00)00043-0.CrossRefGoogle Scholar