The Sorbents Based on Acrylic Fiber Impregnated by Iron Hydroxide (III): Production Methods, Properties, Application in Oceanographic Research
2022
Nikolay A. Bezhin | Mariya A. Frolova | Illarion I. Dovhyi | Ol’ga N. Kozlovskaia | Evgenii V. Slizchenko | Iuliia G. Shibetskaia | Vasiliy A. Khlystov | Eduard A. Tokar’ | Ivan G. Tananaev
Sorbents based on Fe(OH)<sub>3</sub> and aluminum oxide are widely used in oceanology for the recovery of cosmogenic radionuclides <sup>7</sup>Be, <sup>32</sup>Si, <sup>32</sup>P, and <sup>33</sup>P from the seawater. It is also possible to use them for the recovery of the natural radionuclides <sup>210</sup>Pb, <sup>234</sup>Th. A comparative study of the sorbents based on Fe(OH)<sub>3</sub> and acrylic fiber obtained through various impregnation methods was carried out, and their comparison with granulated aluminum oxide. The possibility of extracting trace amounts of phosphorus and beryllium under laboratory and field conditions with these sorbents was studied. The sorption of <sup>7</sup>Be, <sup>210</sup>Pb, and <sup>234</sup>Th on the natural content by the two-column method was investigated. It is shown that fiber samples obtained by oxidation with sodium ferrate and the “classical” method have the highest sorption characteristics.
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