Synthesis of Hydroxyapatite from Bovine Bone for Fluoride Reduction in Water
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Abstract
Thailand has a high amount of fluoride in groundwater in many areas. It will be dangerous for consumptions. Nowadays, there are many studies of materials for reducing fluoride content in water from various materials. In this study, the reduction of fluoride in synthetic water solution from calcium phosphate material, hydroxyapatite, from bovine bone was evaluated. The synthesis of hydroxyapatite from bovine bone by thermal decomposition method and the changes of crystalline phase and physical property of bovine bone at different temperatures were studied. The synthesized hydroxyapatite from bovine bone was studied to evaluate Point of zero charge, pHpzc, to assess the adsorption state of hydroxyapatite. The effect of pH on the ability and efficiency of fluoride adsorption was investigated using batch experiment. Bovine bones undergone thermal process at a temperature of 1,000 °C for 1 hour changed its crystalline phase to hydroxyapatite with an average particle size of 1 µm. Hydroxyapatite from bovine bone has the ability and efficiency to reduce the fluoride content of 1.3 mg F- / g and 65% at pH 6, respectively, using hydroxyapatite of 0.5 grams.
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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