Simultaneous sequestration of uranyl and arsenate at the goethite/water interface
Simultaneous sequestration of uranyl and arsenate at the goethite/water interface
复制标题
在针铁矿/水界面同时封存铀酰和砷酸盐
DOI:
10.1007/s10967-016-5086-9
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发表时间:
2016
影响因子:
1.6
通讯作者:
Shuao Wang
中科院分区:
文献类型:
--
作者:
Lanhua Chen;Yue Lang;Xiangke Wang;Shuao Wang
This study highlights the simultaneous sequestration of U(VI) and arsenate at the goethite/water interface. The uptake trends and speciation of these two components were related with molar arsenate/U(VI) ratio, solution pH, contact order and aging time. A metastable [UO2(H2AsO4)2·H2O] was observed after 3 days and then this solid completely transformed into Na2(UO2AsO4)2·3H2O after 7 days. The disodium ethylenediamine tetraacetate ligand gave rise to the complete dissolution of Na2(UO2AsO4)2·3H2O phase and the release of U(VI) and arsenate back into the solution. The experimental findings facilitated us better comprehend the migration and fate of coexisting U(VI) and arsenate in the aquatic environment.
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