Cadmium removal from single- and multi-metal () solutions by sorption on hydroxyapatite

Heavy metal contamination of waters and soils is dangerous to the living organisms

Alessia Corami; Silvano Mignardi; Vincenzo Ferrini

2007

Scholarcy highlights

  • Heavy metal contamination of waters and soils is dangerous to the living organisms
  • Different studies have demonstrated that hydroxyapatite has a high removal capacity for divalent heavy metal ions in contaminated waters and soils
  • The removal of Cd from aqueous solutions by hydroxyapatite was investigated in batch conditions at 25±2°C
  • Cadmium immobilization occurs through a two-step mechanism: rapid surface complexation followed by partial dissolution of hydroxyapatite and ion exchange with Ca resulting in the formation of a cadmium-containing hydroxyapatite
  • The sorption of Cd by hydroxyapatite occurs through a two-step mechanism: rapid surface complexation followed by partial dissolution of hydroxyapatite and ion exchange with Ca

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