Adsorption of Re and 99Tc by means of radiation-grafted weak basic anion exchange resin
Adsorption of Re and 99Tc by means of radiation-grafted weak basic anion exchange resin
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DOI：
10.1007/s10967-016-4819-0
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发表时间：
2016-04
影响因子：
1.6
通讯作者：
J. Zu;Ruiqin Liu;Jianqiu Zhang;Fangdong Tang;Linfeng He
中科院分区：
文献类型：
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作者：
J. Zu;Ruiqin Liu;Jianqiu Zhang;Fangdong Tang;Linfeng He
为避免使用有毒溶剂，采用同步辐射接枝法将4-乙烯基吡啶接枝到聚苯乙烯微球上，制备了芳香胺基弱碱性阴离子交换树脂。在对Re（VII）的间歇吸附实验中，当HNO 3浓度为0.02M时，吸附效率最大。采用SnCl_2还原性洗脱剂，找到了一种在低酸度下高效再生树脂的方法。对99 Tc的吸附结果与Re的吸附结果吻合较好，表明所制备的交换剂在去除乏燃料中的99 Tc方面具有广阔的应用前景。
To avoid using toxic solvents, weak basic anion exchange resin with aromatic amine groups was prepared by grafting 4-vinyl pyridine onto polystyrene microspheres through simultaneous radiation grafting method. In batch adsorption experiments toward Re(VII) which was selected to simulate99Tc, the adsorption efficiency maximized when the concentration of HNO3was set at 0.02 M. Using reductive eluents SnCl2it was found a method to efficiently regenerated resin at low acidity. For adsorption toward99Tc, the results matched well with Re, which indicates that the prepared exchangers will have wide applications in the future to remove99Tc from spent nuclear fuel.