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DOE OSTI · 22280348

Hydroxyapatite with environmental applications

Popa, C. L.·Ciobanu, C. S.·Petre, C. C.·Jiga, G.·Motelica-Heino, M.·Iconaru, S. L.
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Abstract

The aim of this study was to synthetize new nanoparticles based on methyltrimethoxysilane coated hydroxyapatite (MTHAp) for lead removal in aqueous solutions. The morphological and compositional analysis of MTHAp was investigated by scanning electron microscopy (SEM) equipped with an energy dispersive X-ray spectrometer (EDS). Removal experiments of Pb{sup 2+} ions were carried out in aqueous solutions with controlled concentration of Pb{sup 2+} and at fixed pH of 5. After the removal experiment of Pb{sup 2+} ions from solutions, porous hydroxyapatite nanoparticles were transformed into PbMTHAp-5 via the adsorption of Pb{sup 2+} ions followed by a cation exchange reaction. Our results demonstrate that the porous hydroxyapatite nanoparticles can be used as an adsorbent for removing Pb{sup 2+} ions from aqueous solution.

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77 NANOSCIENCE AND NANOTECHNOLOGYADSORBENTSADSORPTIONAPATITESAQUEOUS SOLUTIONSCONCENTRATION RATIOION EXCHANGELEAD COMPOUNDSLEAD IONSNANOSTRUCTURESPARTICLESPOROUS MATERIALSSCANNING ELECTRON MICROSCOPYX-RAY SPECTROSCOPY

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Popa, C. L., Ciobanu, C. S., Petre, C. C., Jiga, G., Motelica-Heino, M., Iconaru, S. L.. 2014-05-15. Hydroxyapatite with environmental applications. https://doi.org/10.1063/1.4876842

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