What is it about?

Hydroxyapatite (HAp) is a bioactive material that forms the main mineral part of teeth, hard tissues, and bone in humans. The goal of the present study is to prepare hydroxyapatite from bio-waste materials such as fish bone and bovine femur bone at different calcination temperatures, selecting the optimal calcination temperatures and then comparing these with commercial nanoHAp. The HAp was synthesized from the bio-waste materials by a calcination process in a thermal dry and fire furnace with different calcination temperatures, heating rates and cooling rates all carefully controlled. The best results were obtained at 950C since, at this temperature, the Ca/P ratio reached 1.6589 for fish bone and 1.7058 for bovine femur bone, which is close to the commercial stoichiometric nano-HAp ratio of 1.67.

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Why is it important?

HAp from various bio-waste materials, such as fishbone and bovine femur bone, and to use the exact characterization of the resultant powders to determine the optimum temperature for calcination, comparing the results of the calcinated bio-waste material with commercial nano-HAp.


Overall, the results showed that biowaste materials (fishbone and bovine femur bone) calcinated at 950C could create micro-HAp that was approximately similar to commercial nano- HAp.

Prof. Dr Eng. Ali Sabea Hammood
University of Kufa -Faculty of Engineering -Materials Engineering Department

Read the Original

This page is a summary of: Comparison of Natural and Nano-synthetically-Produced Hydroxyapatite Powder, JOM, October 2018, Springer Science + Business Media,
DOI: 10.1007/s11837-018-3185-5.
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