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  • Adsorption of toxic organic compounds from water with hydrophobic silica aerogels
    Štandeker, Suzana ; Novak, Zoran ; Knez, Željko
    Silica monolith aerogels with different degrees of hydrophobicity were prepared by incorporating methyltrimethoxysilane (MTMS) or trimethylethoxysilane (TMES) in standard sol-gel synthesis followed ... by supercritical drying of gels with carbon dioxide (CO(2)) at 40 degrees C and 100 bar. The hydrophobicity of the aerogels was tested by measuring the contact angle (theta). The aerogels were also characterised by FTIR, DSC, and porosity measurements. Adsorption capacity measurements show that such modified hydrophobic silica aerogels are excellent adsorbents for different toxic organic compounds from water. In comparison to granulated active carbon (GAC) they exhibit capacities which are from 15 to 400 times higher for all tested compounds. Adsorption properties of hydrophobic silica aerogel remain stable even after 20 adsorption/desorption cycles.
    Vir: Journal of colloid and interface science. - ISSN 0021-9797 (No. 2, vol. 310, 2007, str. 362-368)
    Vrsta gradiva - članek, sestavni del
    Leto - 2007
    Jezik - angleški
    COBISS.SI-ID - 11277334

vir: Journal of colloid and interface science. - ISSN 0021-9797 (No. 2, vol. 310, 2007, str. 362-368)

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