Selectivity modification by ion memory of magneso-silicate and magnesium alumino-silicate as inorganic sorbents.
作者： Mamdouh M. Abou-Mesalam , Ibrahim M. El-Naggar
DOI: 10.1016/J.JHAZMAT.2007.10.007
关键词: Desorption 、 Ion 、 Nitric acid 、 Nuclear chemistry 、 Silicate 、 Chemistry 、 Magnesium 、 Inorganic chemistry 、 Selectivity 、 Ion exchange 、 Sorption
摘要: Abstract Synthetic magneso-silicate and magnesium alumino-silicate as inorganic ion exchange materials with the formula MgSi5.59O12.18·5.93H2O MgAl2.32Si5.2O14.88·18.23H2O, respectively, have been found to be suitable for removal of Cs+, Co2+ Eu3+ ions selectivity sequence Eu3+ > Co2+ > Cs+. Samples Cs-, Co- Eu-loaded were prepared thermally treated at 850 °C in a furnace creation specific cavity. Surface area, IR X-ray diffraction patterns products conducted. area values OMS, OMAS, TMS, TMAS, ETMS ETMAS measured indicated an increasing surface TMS TMAS samples decreasing samples. Desorption studies nitric acid medium carried out reloading eluted solids studied cations conduced data show memory behaviour solids. Finally, rate Cs+ sorption on was studied. The diffusion coefficients calculated that is high compared OMS OMAS
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