Precipitation of Hydroxyapatite at 37 degrees C in a Meso Oscillatory Flow Reactor Operated in Batch at Constant Power Density

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Filipa Castro (Autor) FEUP; António Ferreira (Autor) FEUP; Fernando Rocha (Autor) FEUP; António Vicente (Autor) Outra; José António Teixeira (Autor) Outra

Revista

Título: AICHE Journal

Vol. 59 Nº 10

Páginas: 4483-4493

ISSN: 0001-1541

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 14 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Projetos Associados

UI0511 - PROJECTO ESTRATÉGICO - UI 511 - 2013-2014

Outras Informações

ID Authenticus: P-008-GVA

DOI: 10.1002/aic.14193

Abstract (EN): A meso oscillatory flow reactor (meso-OFR) was successfully applied for the precipitation of hydroxyapatite (HAp) nanoparticles. Mixing efficiency of the mesoreactor operated batchwise in a vertical tube was evaluated at constant power density, by monitoring variation of hue values upon mixing both spatially and temporally. The best operating conditions for fast mixing and a more homogeneous reaction medium were verified for f=0.83 Hz and x(0)=4.5 mm. HAp precipitation was then carried out under these conditions at 37 degrees C for different mixing Ca/P molar ratios. HAp nanoparticles with a mean size (d(50)) of about 67 nm and a narrow size distribution were obtained. Furthermore, the obtained results show the advantages of the meso-OFR over a stirred tank batch reactor due to the production, about four times faster, of smaller and more uniform HAp nanoparticles. (c) 2013 American Institute of Chemical Engineers AIChE J, 59: 4483-4493, 2013

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11