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首页> 外文期刊>Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry >Adsorption behavior of actinides and some typical fission products by silica/polymer-based isoHex-BTP adsorbent from nitric acid solution
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Adsorption behavior of actinides and some typical fission products by silica/polymer-based isoHex-BTP adsorbent from nitric acid solution

机译：二氧化硅/聚合物基isoHex-BTP吸附剂在硝酸溶液中对act系元素和一些典型裂变产物的吸附行为

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摘要

The silica/polymer-based isoHex-BTP adsorbent (isoHex-BTP/SiO2-P) was prepared for partitioning Am(III) and Cm(III) from HLLW. Batch adsorption results showed that isoHex-BTP/SiO2-P exhibited high affinity and selectivity for Am(III) and Pu(IV) over U(VI), Ln(III) and other typical fission products in 3 mol dm(-3) nitric acid. The effects of contact time, initial Dy(III) concentration and temperature on the adsorption of Dy(III) [as a simulated element of MA(III) and a representative element of Ln(III)] by isoHex-BTP/SiO2-P in 3 mol dm(-3) nitric acid were investigated. The adsorption of Dy(III) fitted well to the pseudo-second-order kinetic model and the Langmuir isotherm model. The adsorption thermodynamic parameters revealed that the adsorption was a spontaneous, endothermic and entropy-driving process.
机译：制备了基于二氧化硅/聚合物的isoHex-BTP吸附剂（isoHex-BTP / SiO2-P），用于从HLLW中分配Am（III）和Cm（III）。分批吸附结果表明，isoHex-BTP / SiO2-P在3 mol dm（-3）中对U（VI），Ln（III）和其他典型裂变产物表现出对Am（III）和Pu（IV）的高亲和力和选择性。硝酸。接触时间，初始Dy（III）浓度和温度对Dy（III）吸附的影响[作为MA（III）的模拟元素和Ln（III）的代表性元素]被isoHex-BTP / SiO2-P吸附研究了3摩尔dm（-3）硝酸中的Dy（III）的吸附非常适合拟二级动力学模型和Langmuir等温模型。吸附热力学参数表明吸附是自发的，吸热的和熵驱动过程。

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