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Title: Controlled production of eco-friendly emulsions using direct and premix membrane emulsification
Authors: Santos, Jenifer
Vladisavljevic, Goran T.
Holdich, R.G.
Dragosavac, Marijana M.
Munoz, Jose
Keywords: Membrane emulsification
Stirred cell
Eco-friendly emulsions
Green solvents
Emulsion rheology
Issue Date: 2015
Publisher: Elsevier / © The Institution of Chemical Engineers
Citation: SANTOS, J. ... et al, 2015. Controlled production of eco-friendly emulsions using direct and premix membrane emulsification. Chemical Engineering Research and Design, 98, pp. 59 - 69.
Abstract: Eco-friendly O/W emulsions were produced by membrane emulsification using nickel membrane consisting of hexagonal arrays of cylindrical pores of 10 or 20 μm diameter and 200 μm spacing. The dispersed phase was a mixture of N,N-dimethyldecanamide (AMD-10TM) and d-limonene containing 0–35 wt% AMD-10TM in the dispersed phase and the continuous aqueous phase was 3 wt% polyoxyethylene glycerol fatty acid ester (Levenol® C-201). In direct membrane emulsification, the droplet-to-pore size ratio was 1.5–4.6 and the most uniform droplets were obtained with pure d-limonene at a stirrer speed of 620 rpm, corresponding to the peak shear stress on the membrane surface of 7 Pa. In premix membrane emulsification, the median droplet diameter decreased with increasing the transmembrane flux and was smaller than the pore size at the flux above 2000 L m−2 h−1. The droplet size was 6 μm after two passes through the membrane with a pore diameter of either 10 or 20 μm. The viscosity of emulsions with 30 wt% was not influenced by the shear rate but an emulsion with a dispersed phase content of 40 wt% showed shear thinning behaviour and viscoelastic properties. The produced emulsions can be used as environmentally friendly matrices for incorporation of agrochemical actives.
Description: This paper was accepted for publication in the journal Chemical Engineering Research and Design and the definitive published version is available at http://dx.doi.org/10.1016/j.cherd.2015.04.009 .
Sponsor: The financial support received (Project CTQ2011-27371) fromthe Spanish Ministerio de Economía y Competitividad, theEuropean Commission (FEDER Programme) and from V PlanPropio Universidad de Sevilla is kindly acknowledged.
Version: Accepted for publication
DOI: 10.1016/j.cherd.2015.04.009
URI: https://dspace.lboro.ac.uk/2134/17475
Publisher Link: http://dx.doi.org/10.1016/j.cherd.2015.04.009
ISSN: 1744-3563
Appears in Collections:Published Articles (Chemical Engineering)

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