Novel substituted Hydroxyapatite nanoparticles as a solid phase for removal of Co(II) and Eu(III) ions from aqueous solutions
作者： R.R. Sheha , S.I. Moussa , M.A. Attia , S.A. Sadeek , H.H. Someda
DOI: 10.1016/J.JECE.2016.11.005
关键词: Solid phase extraction 、 Sorption 、 Ionic bonding 、 Nanoparticle 、 Phase (matter) 、 Aqueous solution 、 Chemistry 、 Magnesium 、 Desorption 、 Inorganic chemistry
摘要: Abstract Ionic substitution is a tool to improve the sorptive properties of hydroxyapatite (HAP). Based on this concept, strontium and magnesium/cadmium substituted HAP nanoparticles were synthesized, by co-precipitation method, applied in removal Co(II) Eu(III) ions from aqueous solutions. The influence different sorption parameters such as equilibration time solution pH sorbed amount was studied discussed. process followed pseudo-second-order kinetic with necessary 24 h reach equilibrium. maximum capacity 33.31 mg g −1 for Sr-HAP at 4.5 28.93 mg g (Mg-Cd)HAP 1.1, while it 115.74 137.31 mg g onto 2.5, respectively. Desorption loaded samples using various eluents recovery obtained FeCl 3 HCl
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