Novel Membrane Emulsification Method of Producing Highly Uniform Silica Particles Using Inexpensive Silica Sources

  • Marijana M. Dragosavac
  • Goran T. VladisavljevićEmail author
  • Richard G. Holdich
  • Michael T. Stillwell
Conference paper
Part of the Progress in Colloid and Polymer Science book series (PROGCOLLOID, volume 139)


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 μm pore size and 200 μm pore spacing was used to produce droplets, with a mean size between 65 and 240 μm 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 μm. Coefficient of variation for both the droplets and particles did not exceed 35%. The most uniform particles had a mean diameter of 40 μm 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.


Silica Particle Sodium Silicate Droplet Diameter Sodium Silicate Solution Hydrogel Particle 
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This research was supported by Engineering and Physical Sciences Research Council, UK (DIAMOND project into Decommissioning, Immobilisation And Management Of Nuclear wastes for Disposal).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Marijana M. Dragosavac
    • 1
  • Goran T. Vladisavljević
    • 1
    • 2
    Email author
  • Richard G. Holdich
    • 1
    • 3
  • Michael T. Stillwell
    • 3
  1. 1.Chemical Engineering DepartmentLoughborough UniversityLoughborough, LeicestershireUK
  2. 2.Vinča Institute of Nuclear SciencesUniversity of BelgradeBelgradeSerbia
  3. 3.Micropore Technologies LtdDerbyshireUK

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