AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Issue no. 1 / 2006 | |||||||
Article: |
STUDIES ON THE NATRIUM SULPHATE SALTING-OUT CRYSTALLIZATION II. CRYSTALLIZATION KINETICS. Authors: ADINA GHIRIȘAN, SIMION DRĂGAN, ALEXANDRU POP, VASILE MICLĂUȘ. |
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Abstract: The kinetic of nucleation and growing of the crystal nuclei in the salting-out crystallization of natrium sulphate were studied. The influence of kinetic parameters (energy consumption or agitator power input, temperature and growth rate) on the second nucleation was determined. The influence of the hydrodynamic conditions and of the temperature on the average size of the obtained crystals was discussed. A value of activation energy of 5.4•104 J/mol for the nucleation process was determined. | |||||||