Abstract
This paper describes the preparation of an improved adsorbent from natural perlite and its properties for laboratory and environmental applications. The SiO2 content of mineral perlite, which is in the 70–75% range, was converted to soluble silicates with NaOH. The acidification of soluble silicates in the perlite formed hydrogels, which turned into xerogels upon drying. Several parameters — particle size, specific surface area, pore size and volume, and surface hydroxyl group density — were investigated for NaOH-standardised perlite. The standardised perlite was silanised and loaded with 20% (w/w) tributyl phosphate before being used as a reversed-phase column chromatography solid support. Furthermore, the sorption of UO2 2+ and Fe3+ from aqueous solutions by the modified perlite was investigated using batch techniques.
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Akçay, H., Kýlýnç, S. (1999). Reversed Phase Column Extraction Studies Using a Standardised and Silanised Anatolian Perlite. In: Misaelides, P., Macášek, F., Pinnavaia, T.J., Colella, C. (eds) Natural Microporous Materials in Environmental Technology. NATO Science Series, vol 362. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4499-5_33
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DOI: https://doi.org/10.1007/978-94-011-4499-5_33
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