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Evaluation study on a macroporous silica-based isohexyl-BTP adsorbent for minor actinides separation from nitric acid medium
Liu, RQ; Wang, XP; Wei, YZ; Shi, WQ; Chai, ZF;石伟群; Chai ZF(柴之芳)
刊名RADIOCHIMICA ACTA
2014
卷号102期号:1-2页码:93-100
关键词High level liquid waste Silica-based isohexyl-BTP adsorbent Americium(III) Rare earth elements(III) MAREC process Extraction chromatography
学科分类Chemistry; Nuclear Science & Technology
DOI10.1515/ract-2014-2097
英文摘要To separate the long-lived minor actinides (MA = Am, Cm) from high level liquid waste (HLLW), we have been studying a partitioning technology named "MAREC" (Minor Actinides Recovery from HLLW by Extraction Chromatography) process which consists of two separation columns packed with silica-based adsorbents. In this work, we prepared the silica-based 2,6-bis(5,6-diisohexyl-1,2,4-triazin-3-yl) pyridine (isohexyl-BTP/SiO2-P) adsorbent used in the second column (0.01 similar to 0.1 mol dm(-3) HNO3) in the MAREC process for the separation of trivalent minor actinides (MA(III)) from trivalent rare earth elements (RE(III)) which are contained in HLLW. The content of extracting agent isohexyl-BTP in isohexyl-BTP/SiO2-P was as high as 33.3% of the total mass of the adsorbent. The adsorbent exhibited high affinity and selectivity for Am(III) over RE(III) not only in nitric acid solution but also in nitrate solution. Investigation showed that only a small part of isohexyl-BTP molecules inside isohexyl-BTP/SiO2-P leaked into 0.01 mol dm(-3) HNO3 with or without gamma-irradiation. The adsorption performance of isohexyl-BTP/SiO2-P did not evidently change after 120 d of contact with 0.01 mol dm(-3) nitric acid. Furthermore, after gamma-irradiated in 0.01 mol dm(-3) HNO3 under the experimental conditions, isohexyl-BTP/SiO2-P exhibited higher adsorption for RE(III) than before gamma-irradiation.
收录类别SCI
WOS记录号WOS:000331141200010
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225330
专题院士_期刊论文
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Liu, RQ,Wang, XP,Wei, YZ,et al. Evaluation study on a macroporous silica-based isohexyl-BTP adsorbent for minor actinides separation from nitric acid medium[J]. RADIOCHIMICA ACTA,2014,102(1-2):93-100.
APA Liu, RQ,Wang, XP,Wei, YZ,Shi, WQ,Chai, ZF;石伟群,&柴之芳.(2014).Evaluation study on a macroporous silica-based isohexyl-BTP adsorbent for minor actinides separation from nitric acid medium.RADIOCHIMICA ACTA,102(1-2),93-100.
MLA Liu, RQ,et al."Evaluation study on a macroporous silica-based isohexyl-BTP adsorbent for minor actinides separation from nitric acid medium".RADIOCHIMICA ACTA 102.1-2(2014):93-100.
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