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Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources
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 c...
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| Format: | Default Article |
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2012
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| Online Access: | https://hdl.handle.net/2134/9366 |
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| _version_ | 1805993579418484736 |
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| author | Marijana Dragosavac Goran Vladisavljevic Richard Holdich Michael T. Stillwell |
| author_facet | Marijana Dragosavac Goran Vladisavljevic Richard Holdich Michael T. Stillwell |
| author_sort | Marijana Dragosavac (1249020) |
| collection | Figshare |
| description | 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. |
| format | Default Article |
| id | rr-article-9243980 |
| institution | Loughborough University |
| publishDate | 2012 |
| record_format | Figshare |
| spelling | rr-article-92439802012-01-01T00:00:00Z Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources Marijana Dragosavac (1249020) Goran Vladisavljevic (1253448) Richard Holdich (1253271) Michael T. Stillwell (7128413) Chemical engineering not elsewhere classified Membrane emulsification Silica particles Ion-exchange Microfiltration Monodisperse particles Functionalised silica gel Chemical Engineering not elsewhere classified 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. 2012-01-01T00:00:00Z Text Journal contribution 2134/9366 https://figshare.com/articles/journal_contribution/Novel_membrane_emulsification_method_of_producing_highly_uniform_silica_particles_using_inexpensive_silica_sources/9243980 CC BY-NC-ND 4.0 |
| spellingShingle | Chemical engineering not elsewhere classified Membrane emulsification Silica particles Ion-exchange Microfiltration Monodisperse particles Functionalised silica gel Chemical Engineering not elsewhere classified Marijana Dragosavac Goran Vladisavljevic Richard Holdich Michael T. Stillwell Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| title | Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| title_full | Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| title_fullStr | Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| title_full_unstemmed | Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| title_short | Novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| title_sort | novel membrane emulsification method of producing highly uniform silica particles using inexpensive silica sources |
| topic | Chemical engineering not elsewhere classified Membrane emulsification Silica particles Ion-exchange Microfiltration Monodisperse particles Functionalised silica gel Chemical Engineering not elsewhere classified |
| url | https://hdl.handle.net/2134/9366 |