CHERD-D-15-00147.pdf (2.57 MB)
Controlled production of eco-friendly emulsions using direct and premix membrane emulsification
journal contributionposted on 2015-05-12, 13:29 authored by Jenifer Santos, Goran VladisavljevicGoran Vladisavljevic, Richard Holdich, Marijana DragosavacMarijana Dragosavac, Jose Munoz
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.
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.
- Aeronautical, Automotive, Chemical and Materials Engineering
- Chemical Engineering
Published inChemical Engineering Research and Design
Pages59 - 69
CitationSANTOS, 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.
PublisherElsevier / © The Institution of Chemical Engineers
- AM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis 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 .