Feasibility studies on the selective separation of fission palladium(II) by isoHex-BTP/SiO2-P adsorbent from HLLW
Feasibility studies on the selective separation of fission palladium(II) by isoHex-BTP/SiO2-P adsorbent from HLLW
复制标题
isoHex-BTP/SiO2-P吸附剂从HLLW中选择性分离裂变钯(II)的可行性研究
DOI：
10.1080/00223131.2017.1323687
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发表时间：
2017-05
影响因子：
1.2
通讯作者：
Yaping Zhao
中科院分区：
文献类型：
--
作者：
Ruiqin Liu;Qing Zou;Jianhua Zu;Yuezhou Wei;Youqian Ding;Yaping Zhao
摘要针对高放废液(HLLW)中裂变钯(II)的选择性回收问题，将络合剂isHex-BTP浸渍到多孔SiO_2-P惰性载体中，合成了SiO_2/聚合物(SiO_2-P)基的异六方-BTP/SiO_2-P吸附剂。采用间歇实验的方法，评价了等六角BTP/SiO_2-P分离高放废液中Pd(II)的可行性。结果表明，IsoHex-BTP/SiO_2-P对Pd(II)的吸附选择性远高于其他裂变产物，甚至在高放废液中也存在Am(III)和Pu(IV)。吸附Pd(II)的理想硝酸浓度为≥2moldm-3。Pd(II)的吸附符合准二级动力学模型和朗缪尔等温线模型。用0.5moL dm−_3SC(NH_2)_2-0.1mol dm−_3HNO_3溶液定量解吸Pd(II)。
ABSTRACT Aiming at the selective recovery of fission palladium(II) from high-level liquid waste (HLLW), the silica/polymer (SiO2-P)-based isoHex-BTP adsorbent (isoHex-BTP/SiO2-P) was synthesized by impregnating complexing agent isoHex-BTP into the multiporous SiO2-P inert support. The feasibility of separation of Pd(II) from HLLW by isoHex-BTP/SiO2-P was evaluated by batch experiment method. The results showed that isoHex-BTP/SiO2-P exhibited much higher adsorption selectivity for Pd(II) than the other fission products, even Am(III) and Pu(IV) presented in HLLW. The ideal nitric acid concentration for the adsorption of Pd(II) by the adsorbent was shown to be ≥2 mol dm–3. The adsorption of Pd(II) fits well to the pseudo-second-order kinetic model and Langmuir isotherm model. Quantitative Pd(II) desorption was achieved by using 0.5 mol dm−3 SC(NH2)2 - 0.1 mol dm−3 HNO3 solution.
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影响因子：
0.9
作者：
Korolev, V. A.;Pokhitonov, Yu. A.;Milyutin, V. V.
通讯作者：
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DOI：
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DOI：
10.1007/s00128-009-9899-x
发表时间：
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影响因子：
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作者：
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