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. 2020 Apr 23;6(4):e03765. doi: 10.1016/j.heliyon.2020.e03765

Table 2.

Synthetic Processes and Techniques for Producing HA Powders using Different Chemicals and Reactants (Nayak, 2010).

S/N Processing Technique Reference/Source
1. Spray pyrolysis Walsh et al. (2008)
2. Sol gel technique (Sanosh et al., 2009)
3. Solution combustion (Pandharipande and Sondawale, 2016a)
4. Hydrolysis (Shih et al., 2005)
5. Microwave (Pandharipande and Sondawale, 2016b)
6. Solid state reaction (Guo et al., 2013)
7. Hydrothermal (Neira et al., 2008)
8. Emulsion method (Chen et al., 2009)
9. Mechanochemical (Yeong et al., 2001)
10. Precipitation methods including:
a. Calcium carbonate (CaCO3) based wet chemical precipitation method,
b. Calcium hydroxide (Ca(OH)2) based wet chemical precipitation method,
c. Di-ammonium hydrogen Ortho-phosphate based wet chemical precipitation method,
d. and Ortho-phosphoric acid (H3PO4) based wet chemical precipitation method.
(Mobasherpour et al., 2007)