Stability of oil-in-water emulsions produced by membrane emulsification with microporous ceramic membranes

Zanatta, VanessaFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (author)

QC 20210121
Membrane emulsification has been drawing attention due to its many application possibilities. This study aimed to assess the preparation and stability of oil in water (O/W) emulsions by membrane emulsification technique. Microporous ceramic membranes with mean pore size 0.2 mu m and 0.8 mu m were used for producing sunflower oil in water emulsions, displaying mean droplet size ranging from 2.9 to 11.6 mu m and from 4.8 to 16.2 mu m, respectively. The effect of the oil concentration (10%-20%), surfactant concentration (1%-4%), tangential velocity (0.12 m s(-1) to 0.24 m s(-1)), and feed pressure (100 kPa-300 kPa) on the process performance was investigated using an experimental design. All the parameters significantly influenced the mean droplet size, the droplet size distribution, and the emulsion stability. Depending on the emulsification conditions, monodisperse and polydisperse emulsions were obtained. The use of a membrane with 0.2 mu m mean pore size led to better results than those obtained with a 0.8 mu m membrane, since they yielded emulsions displaying smaller droplet size and narrower size distribution. The emulsions prepared using this membrane were stable up to 100 days. (C) 2016 Elsevier Ltd. All rights reserved.

Rezzadori, KatiaFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (author)
Penha, Frederico MarquesFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil(Swepub:kth)u1eangz4 (author)
Zin, GuilhermeFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (author)
Lemos-Senna, ElenaraFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (author)
Cunha Petrus, Jose CarlosFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (author)
Di Luccio, MarcoFederal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (author)
Federal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil (creator_code:org_t)

By the author/editor: Zanatta, Vanessa; Rezzadori, Katia; Penha, Frederico ...; Zin, Guilherme; Lemos-Senna, Ele ...; Cunha Petrus, Jo ...; show more...; Di Luccio, Marco; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Other Engineerin ...; and Food Engineering

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