Effects of γ-alumina nanoparticles on strontium sorption in smectite: Additive model approach
作者： Natalia Mayordomo , Ursula Alonso , Tiziana Missana
DOI: 10.1016/J.APGEOCHEM.2018.11.012
关键词: Nanoparticle 、 Ion 、 Dissolution 、 Strontium 、 γ alumina 、 Clay minerals 、 Ionic strength 、 Chemical engineering 、 Chemistry 、 Sorption
摘要: Abstract Strontium sorption was analysed in binary mixtures of smectite and γ-alumina nanoparticles under different pH, ionic strength Sr concentration. The aims were to verify if enhance analyse whether a component additive model satisfactorily described the mixtures. In smectite, mainly occurs by cation exchange but surface complexation also accounted for. both solids, with non-electrostatic model. addition γ-Al2O3 improved uptake alkaline pH high strength, successfully reproduced experimental data. contrast, acid low no improvement observed upon adding overestimated sorption. competition Al3+ ions, coming from dissolution, partially explained differences between data Nevertheless, interactions alumina particles layers may be shielding charge, hindering contaminant access exchangeable sites smectite.
sci-hub.se 参考文章(75)
A. V. Voronina, V. S. Semenishchev, Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide Journal of Radioanalytical and Nuclear Chemistry. ,vol. 307, pp. 577- 590 ,(2016) , 10.1007/S10967-015-4197-Z
S. Savoye, C. Beaucaire, B. Grenut, A. Fayette, Impact of the solution ionic strength on strontium diffusion through the Callovo-Oxfordian clayrocks: An experimental and modeling study Applied Geochemistry. ,vol. 61, pp. 41- 52 ,(2015) , 10.1016/J.APGEOCHEM.2015.05.011
David A. Dzombak, François M M Morel, Surface Complexation Modeling: Hydrous Ferric Oxide ,(1990)
J. Paul MacMillan, Jai Won Park, Rolf Gerstenberg, Heinz Wagner, Karl Köhler, Peter Wallbrecht, Strontium and Strontium Compounds Ullmann's Encyclopedia of Industrial Chemistry. ,(2000) , 10.1002/14356007.A25_321
Daniel R. Stull, JANAF thermochemical tables 堀越研究所. ,(1966)
Ihsan Barin, Thermochemical data of pure substances ,(1989)
J Mukhopadhyay, Pranesh Sengupta, D Sen, S Mazumdar, AK Tyagi, None, Uptake of Cs and Sr radionuclides within oleic acid coated nanomagnetite–hematite composite Journal of Nuclear Materials. ,vol. 467, pp. 512- 518 ,(2015) , 10.1016/J.JNUCMAT.2015.10.022
F. J. HINGSTON, R. J. ATKINSON, A. M. POSNER, J. P. QUIRK, Specific Adsorption of Anions Nature. ,vol. 215, pp. 1459- 1461 ,(1967) , 10.1038/2151459A0
W. P. Bonner, H. A. Bevis, J. J. Morgan, Removal of Strontium from Water by Activated Alumina Health Physics. ,vol. 12, pp. 1691- 1704 ,(1966) , 10.1097/00004032-196612000-00006
Chin-Pao Huang, Werner Stumm, Specific adsorption of cations on hydrous γ-Al2O3 Journal of Colloid and Interface Science. ,vol. 43, pp. 409- 420 ,(1973) , 10.1016/0021-9797(73)90387-1