Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ASSESSING THE EFFECTS OF STIRRING SPEED AND MIXING TIME ON THE STABLITY OF OLEFIN EMULSIONS
Submission Author:
Waleska Rodrigues Pontes da Costa , PB
Co-Authors:
Waleska Rodrigues Pontes da Costa, Mário César de Siqueira Lima, Anna Carolina Amorim Costa, Luciana Amorim, Karine Nóbrega, Elessandre Souza, Renalle C. A. M. Nascimento
Presenter: Luciana Amorim
doi://10.26678/ABCM.COBEM2019.COB2019-0881
Abstract
This work aims to experimentally correlate the effects of stirring speed and mixing time on the stability of olefin emulsions. For this purpose, 40/60 water-in-oil emulsion samples were prepared using olefin as organic base and sodium chloride brine. Only the stirring speed and mixing time were varied on the preparation of the samples, keeping the same products and dosages for all of them. Stability characterization of each sample was performed using gravitational separation tests, microscopic images, viscosity and electrical resistance measurements. The results showed a tendency for improved emulsion stability with increased stirring speed. For emulsification time, it was observed improving in emulsion stability up to the mean value defined for this parameter (10 minutes), so that values higher than this did not show any relevant effects.
Keywords
stirring speed, mixing time, emulsion stability, oil-in-water emulsions, olefin
