Abstract

PEREZ, Anubis et al. Evaluation of a cross flow membrane emulsification plant. Rev. Fac. Ing. UCV [online]. 2015, vol.30, n.1, pp.171-180. ISSN 0798-4065.

O/W Emulsions were prepared by using two emulsification methods with membranes and cross-flow: cross flow membrane emulsification (EMFC) and cross flow membrane emulsification with premix (EMPMFC). Flat hydrophilic PVDF membranes 0.45 μm were used. No previous reports for this application are known. An equipment was designed and built for this research. The effects of various operating conditions (transmembrane pressure differences and cross flow velocity) on the drop diameter, the width of the droplet size distribution and the disperse phase flux were evaluated. The EMPMFC technique allowed to obtain small droplet diameter emulsions (1.5< d₅₀ (μm)< 2), with less droplet size distribution dispersion (span (dimensionless)≤ 0.7), high disperse phase flux (J ≤ 2.5 m³.m^-2.h^-1) and it was easier to control with the equipment.

Keywords : membrane emulsification; PVDF membranes; emulsification equipment; W/O (water-in-oil) emulsion; particle size control.

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