Projects per year
Abstract
Hydroxyapatites were analysed using electron microscopy, X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis. Examination of a bacterially produced hydroxyapatite (Bio-HA) by scanning electron microscopy showed agglomerated nano-sized particles; XRD analysis confirmed that the Bio-HA was hydroxyapatite, with an organic matter content of 7.6%; XRF analysis gave a Ca/P ratio of 1.55, also indicative of HA. The size of the Bio-HA crystals was calculated as ~25 nm from XRD data using the Scherrer equation, whereas Comm-HA powder size was measured as ≤50 μm. The nano-crystalline Bio-HA was ~7 times more efficient in removing Sr 2+ from synthetic groundwater than Comm-HA. Dissolution of HA as indicated by the release of phosphate into the solution phase was higher in the Comm-HA than the Bio-HA, indicating a more stable biomaterial which has a potential for the remediation of contaminated sites.
Original language | English |
---|---|
Pages (from-to) | 79-87 |
Number of pages | 9 |
Journal | Biotechnology Letters |
Volume | 33 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2011 |
Keywords
- biomineralisation
- bioremediation
- hydroxyapatite
- nanoparticles
- strontium removal
- aqueous solutions
- biomineral
- nano-crystalline hydroxyapatite
Fingerprint Dive into the research topics of 'Nano-crystalline hydroxyapatite bio-mineral for the treatment of strontium from aqueous solutions'. Together they form a unique fingerprint.
Projects
- 1 Finished
-
Biogeochemical Applications in Nuclear Decommissioning and Waste Disposal
Renshaw, J., Lunn, R. & El Mountassir, G.
1/07/09 → 1/07/13
Project: Projects from Previous Employment