Synthesis of Hydroxyapatite from Oyster Shell via Precipitation

By Sawittree Rujitanapanich, Pitoon Kumpapan, Panthong Wanjanoi. 2014

161 citations recorded by the source corpus.

Abstract In this work, oyster shell which predominantly composed of calcium carbonate, was used as a staring material for synthesizing hydroxyapatite powder. By calcinating the oyster shell powder at 1200 °C for 2 h, the pure calcium oxide characterized by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FT-IR), was obtained. The XRD pattern also agreed with the standard JCPDS file No.001-1160. The obtained calcium oxide powder was reacted with nitric acid to form the calcium nitrate which was further reacted with di-ammonium hydrogen phosphate at various pH values from 8 to 10 at room temperature and calcined at 900 °C for 2 h. From XRD results, the HA powder was obtained at pH 10 as confirmed by the standard JCPDS file No. 076-0694. In addition, The crystallize size of HA was found to be 89.5 nm from XRD result.

Subfields: Biomaterials, Biomedical Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/aec8acd35a3fa1a205b9ec9ef0f18b96f83d0847

Citations in the corpus

• The Potential Use of Oyster Shell Waste in New Value-Added By-Product (2019, unknown): “There are also several forms of potential medical applications, for example, the oyster shells can be used for hydroxyapatite production via precipitation synthesis with oyster shells that have previously been calcined at 1200 ◦C for two hours in order to obtain pure calcium oxide [58].”