Removal of cadmium, copper, nickel, cobalt and mercury from water by Apatite II™: column experiments.

  title={Removal of cadmium, copper, nickel, cobalt and mercury from water by Apatite II™: column experiments.},
  author={Josep Oliva and Joan de Pablo and Jos{\'e}-Luis Cortina and Jordi Cama and C. Ayora},
  journal={Journal of hazardous materials},
Apatite II™, a biogenic hydroxyapatite, was evaluated as a reactive material for heavy metal (Cd, Cu, Co, Ni and Hg) removal in passive treatments. Apatite II™ reacts with acid water by releasing phosphates that increase the pH up to 6.5-7.5, complexing and inducing metals to precipitate as metal phosphates. The evolution of the solution concentration of calcium, phosphate and metals together with SEM-EDS and XRD examinations were used to identify the retention mechanisms. SEM observation shows… CONTINUE READING
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