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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/9366

Title: Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources
Authors: Dragosavac, Marijana M.
Vladisavljevic, Goran T.
Holdich, R.G.
Stillwell, Michael T.
Keywords: Membrane emulsification
Silica particles
Ion-exchange
Microfiltration
Monodisperse particles
Functionalised silica gel
Issue Date: 2012
Publisher: © Springer Verlag
Citation: DRAGOSAVAC, M.M. ... et al., 2012. Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources. Progress in Colloid and Polymer Science, 139, pp. 7-11.
Abstract: A membrane emulsification method for production of monodispersed silica-based ion exchange particles through water-in-oil emulsion route is developed. A hydrophobic microsieve membrane with 15 :m pore size and 200 :m pore spacing was used to produce droplets, with a mean size between 65 and 240 :m containing acidified sodium silicate solution (with 4 and 6% wt. SiO2) in kerosene. After drying, the final silica particles had a mean size in the range between 30 and 70 :m. Coefficient of variation for both the droplets and particles did not exceed 35%. The most uniform particles had a mean diameter of 40 :m and coefficient of variation of 17%. The particles were functionalised with 3-aminopropyltrimethoxysilane and used for chemisorption of Cu(II) from an aqueous solution of CuSO4 in a continuous flow stirred cell with slotted pore microfiltration membrane. Functionalised silica particles showed a higher binding affinity toward Cu(II) than non-treated silica particles.
Description: The original publication is available at www.springerlink.com
Version: Accepted for publication
DOI: 10.1007/978-3-642-28974-3_2
URI: https://dspace.lboro.ac.uk/2134/9366
Publisher Link: http://dx.doi.org/10.1007/978-3-642-28974-3_2
ISSN: 0340-255X
Appears in Collections:Published Articles (Chemical Engineering)

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