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- W3208063791 abstract "Abstract This work studies the adsorption of zirconium ions by mesoporous titanium dioxide with surface arsenate groups. Experimental maximal adsorption values of zirconium ions were found to be 109.6 mg/g in neutral medium. This process depends on the interaction time, the equilibrium concentration of zirconium ions, and the acidity of the solution. Adsorption kinetics fit well into the kinetic model based on the pseudo-second-order equation ( R 2 = 0.9984). Equilibrium adsorption of zirconium ions is well described by Langmuir’s adsorption theory ( R 2 = 0.9856 and χ 2 = 1.307). Although zirconium ions are less actively adsorbed from a neutral medium than strontium or yttrium ions, in the 2% nitric acid only zirconium is adsorbed out of the mixture of zirconium, strontium, and yttrium. The results obtained by inductively coupled plasma mass spectrometry have shown that the investigated adsorbent selectively adsorbs zirconium ions from their mixture with strontium and yttrium in the range of solution acidity pH = 0–1. The average percentage of maximum extraction of zirconium ions is 94.3 ± 2.4%, and the highest percent of zirconium ions taken up from the mixture with strontium and yttrium is ∼98.4%. Investigated titanium dioxide selectively separate 90 Zr from 90 Sr with the presence of 1000-fold excess of stable 88 Sr in radioactive liquid β − source. This fact is extremely valuable for the age dating of 90 Sr-containing device in nuclear forensics or the determination of 90 Sr in low activity background samples." @default.
- W3208063791 created "2021-11-08" @default.
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- W3208063791 date "2021-10-27" @default.
- W3208063791 modified "2023-09-25" @default.
- W3208063791 title "A new way to ensure selective zirconium ion adsorption" @default.
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- W3208063791 doi "https://doi.org/10.1515/ract-2021-1083" @default.
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