Removal of U(VI) from Nuclear Waste Solutions by Bio-sorbents

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• 作者：Anatoliy Boguslavsky^a ; Nataliya Yurkevich^b ; ^c ; Olga Gaskova^a ; ^c ; Olga Shemelina^a ; ^{shem@igm.nsc.ru}
• 关键词：nuclear waste ; radioactive solution ; biosorbtion
• 刊名：Procedia Earth and Planetary Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：17
• 期：Complete
• 页码：766-769
• 全文大小：162 K
• 卷排序：17

文摘

Six bio-sorbents were used to remove uranium from simulated radioactive solutions UO2(NO3)2. Three types of peats, Polytrichium moss, Eichhórnia crássipes water plant and Cladonia stellaris lichen were used. About 2.7mg of uranium per 1g of sorbent was found in the peat samples after their interaction with UO2(NO3)2 solution (uranium initial concentration was 26mg/L, pH 4.4) during 24hours. Polytrichium moss, Cladonia stellaris lichen and Eichhórnia crássipes water plant were less effective: 2.3, 2.1 and 0.6mg of uranium per g of the sorbent respectively. The sorption on the peats is described by Freundlich isotherm. Numerous spherical compounds containing uranium 10 nanometers in diameter were found in the newly formed biotic sediments on the Polytrichium moss after the experiment.