Hydroxyapatite With Environmental Applications

C.L. Popa (1) , C.S Ciobanu (1) , C.C. Petre (2) , Mikael Motelica-Heino (3) , Simona Liliana Iconaru (3, 1) , G Jiga (2) , D Predoi (1)

1 National Institute of Physics of Materials
2 UPB - University Politehnica of Bucharest [Romania]
3 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327

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 Pb2+ ions were carried out in aqueous solutions with controlled concentration of Pb2+ and at fixed pH of 5. After the removal experiment of Pb2+ ions from solutions, porous hydroxyapatite nanoparticles were transformed into PbMTHAp_5 via the adsorption of Pb2+ ions followed by a cation exchange reaction. Our results demonstrate that the porous hydroxyapatite nanoparticles can be used as an adsorbent for removing Pb2+ ions from aqueous solution.

Keywords: methyltrimethoxysilane; hydroxyapatite; lead removal

Domains: Sciences of the Universe [physics]; Continental interfaces, environment

C.L. Popa, C.S Ciobanu, C.C. Petre, Mikael Motelica-Heino, Simona Liliana Iconaru, et al.. Hydroxyapatite With Environmental Applications. Times of Polymers (TOP) and Composites 2014 7th International Conference, Jun 2014, Ischia, Italy. pp.318-321, ⟨10.1063/1.4876842⟩. ⟨insu-01286599⟩