期刊
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
卷 317, 期 1, 页码 593-603出版社
SPRINGER
DOI: 10.1007/s10967-018-5916-z
关键词
Radioactive waste water; Adsorption; Radio-selenium; Removal; Hydrous zirconium oxide
Adsorption of Se-75(IV) oxyanions onto hydrous zirconium oxide (HZO) is investigated. At pHs 2.2 and 5.3, most of Se(IV) are removed within 5 min and the equilibrium is attained at 40 min. Kinetic and equilibrium data are analyzed by several kinetic and isotherm models, respectively. Adsorption of Se(IV) at different pHs (1.5-12) is dependent on its initial concentration. HZO exhibited a high adsorption capacity for Se(IV), Q (max) = 213.19 mg/g, which is higher than those reported for other adsorbents. Thermodynamic studies revealed that the present adsorption process is feasible, spontaneous and endothermic. Adsorption of Se(IV) in presence of foreign anions is also evaluated.
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