Hydroxyapatite (HAp) has been synthesized from biowaste cockle shells (Anadara Granosa) by precipitation method at various temperatures on synthesis. HAp synthesis result has been analyzed by using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-Ray Diffractometer (XRD). The result showed that HAp was successfully produced from cockle shells. It was found that temperature of synthesis had effects on morphology, Ca/P ratio, crystallinity and crystallite size. Temperature synthesis at 40oC was identified as the optimum temperature to produce HAp as indicated by pattern of pure HAp, the Ca/P value close to theory, well-defined morphology and the presence of functional group.
