Unforseen factors influencing Fe(III)‐containing cations sorption on strongly basic anion exchangers |
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| Authors: | Vasile Gutsanu Cristina Schitco Raisa Drutsa |
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| Affiliation: | 1. Moldova State University, Inorganic and Physical Chemistry Department, 60 A. Mateevici str., MD‐2009 Chisinau, Moldova;2. Technical University of Moldova, Chemistry Department, 168 Bd. Stefan cel Mare, MD‐2004 Chisinau, Moldova |
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| Abstract: | The sorption and partial destruction of the Fe(III)‐containing compounds in the aqueous medium in strongly basic anion exchangers AV‐17 and Varion‐AD phase have been investigated. It is shown that partial destruction of the Fe (III) compounds in acidulated water (pH = 2) and in K2SO4, Fe2(SO4)3 solutions takes place. With increasing of temperature up to 50°C, the desorption degree of the iron ions from polymer phase decreases. In dried polymer, the structural and electronic state of iron compounds, according to their magnetic susceptibility, remains stable for a long time. The sorption of the Fe(III)‐containing cations at 50°C during 12 h depends essentially on the sizes of polymer granules. Sorption increases with growing of polymer granules. For comparison of sorptional capacities, the sorption of Fe(III)‐containing cations was determined on different cation and anion exchangers. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | ion exchangers transition metal chemistry supports |
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