Uptake of Sr 2+ and Co 2+ into biogenic hydroxyapatite: implications for biomineral ion exchange synthesis

S. Handley-Sidhu, J. C. Renshaw, S. Moriyama, B. Stolpe, C. Mennan, S. Bagheriasl, P. Yong, A. Stamboulis, M. Paterson-Beedle, K. Sasaki, R. A D Pattrick, J. R. Lead, L. E. MacAskie

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Abstract

Biomineral hydroxyapatite (Bio-HAp) produced by Serratia sp. has the potential to be a suitable material for the remediation of metal contaminated waters and as a radionuclide waste storage material. Varying the Bio-HAp manufacturing method was found to influence hydroxyapatite (HAp) properties and consequently the uptake of Sr 2+ and Co 2+. All the Bio-HAp tested in this study were more efficient than the commercially available hydroxyapatite (Com-HAp) for Sr 2+ and Co 2+ uptake. For Bio-HAp the uptake for Sr 2+ and Co 2+ ranged from 24 to 39 and 29 to 78 mmol per 100 g, respectively. Whereas, the uptake of Sr 2+ and Co 2+ by Com-HAp ranged from 3 to 11 and 4 to 18 mmol per 100 g, respectively. Properties that increased metal uptake were smaller crystallite size (<40 nm) and higher surface area (>70 m 2 g -1). Organic content which influences the structure (e.g., crystallite arrangement, size and surface area) and composition of Bio-HAp was also found to be important in Sr 2+ and Co 2+ uptake. Overall, Bio-HAp shows promise for the remediation of aqueous metal waste especially since Bio-HAp can be synthesized for optimal metal uptake properties.

Original languageEnglish
Pages (from-to)6985-6990
Number of pages6
JournalEnvironmental Science and Technology
Volume45
Issue number16
Early online date29 Jun 2011
DOIs
Publication statusPublished - 15 Aug 2011

Keywords

  • biomineral hydroxyapatite
  • Serratia sp.
  • waste storage material
  • hydroxyapatite

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    Handley-Sidhu, S., Renshaw, J. C., Moriyama, S., Stolpe, B., Mennan, C., Bagheriasl, S., Yong, P., Stamboulis, A., Paterson-Beedle, M., Sasaki, K., Pattrick, R. A. D., Lead, J. R., & MacAskie, L. E. (2011). Uptake of Sr 2+ and Co 2+ into biogenic hydroxyapatite: implications for biomineral ion exchange synthesis. Environmental Science and Technology , 45(16), 6985-6990. https://doi.org/10.1021/es2015132