Production of Nanoparticles of Hydroxyapatite by Using a Rotating Disk Reactor

This paper deals with the feasibility to produce, in a continuous mode, nanoparticles of hydroxyapatite (HAP) by means of a rotating disk reactor. This device is capable to establish the required conditions of micromixing in correspondence of the reagents feeding point. The experimental work consists mainly of investigating the effect of the feed location of the reagents over the rotating disk surface. It was observed a great influence of the feed location on the particle size distribution of the produced HAP, only the best feed location allow the production of particles smaller than 100 nanometers. The obtained experimental results were interpreted on the light of a simplified simulation model. The model provided the map of the specific dispersed energy, thus allowing identifying the zones of the disk where micromixing may occur.