Synthesis and polymeric modification of hydroxyapatite from biogenic raw material for adsorptive removal of Co2+ and Sr2+.

Autor:	Elsanafeny, H. A., Abo Aly, M. M., Hasan, M. A., Lasheen, Y. F., Youssef, M. A.
Předmět:	RAW materials HYDROXYAPATITE POLYMERIC nanocomposites LANGMUIR isotherms COMPOSITE materials AQUEOUS solutions STRONTIUM ions
Zdroj:	Journal of Radioanalytical & Nuclear Chemistry; Nov2020, Vol. 326 Issue 2, p1119-1133, 15p, 1 Black and White Photograph, 1 Diagram, 4 Charts, 10 Graphs
Abstrakt:	A gamma induced copolymerization process was applied to modify hydroxyapatite prepared from eggshell. The composite material was characterized by different physicochemical methods, and then it was used for removal of Sr2+ and Co2+ ions from aqueous solutions as a function of pH, temperature, time, interfering ions, and initial Sr2+ and Co2+ concentrations by applying batch adsorption technique. The maximum removal was obtained at pH 6, and 8 for Sr2+ and Co2+ ions respectively. Sorbents regeneration was successful with HCl eluent. Results showed good fitting to Freundlich isotherm than Langmuir. Kinetic data was well described by pseudo-second order equation. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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