Evaluation study on a macroporous silica-based isohexyl-BTP adsorbent for minor actinides separation from nitric acid medium

	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
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.
学科主题	Chemistry; Nuclear Science & Technology
收录类别	SCI
WOS记录号	WOS:000331141200010
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225330]
专题	高能物理研究所_院士
推荐引用方式 GB/T 7714	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.