Recovery of Trace Uranium in Organic Waste Liquid

doi:10.13209/j.0479-8023.2016.117

Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2016, Vol. 52 ›› Issue (6): 1050-1056.DOI: 10.13209/j.0479-8023.2016.117

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Recovery of Trace Uranium in Organic Waste Liquid

GUO Yitian¹, CHEN Qingde^1,†, SHEN Xinghai^1,†, ZOU Lexi², LI Yingqiu²

1. Beijing National Laboratory for Molecular Sciences (BNLMS), Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
2. China Academy of Engineering Physics, Mianyang 621900

Received:2015-05-25 Revised:2015-06-11 Online:2016-11-20 Published:2016-11-20
Contact: CHEN Qingde, E-mail: qdchen(at)pku.edu.cn; SHEN Xinghai, E-mail: xshen(at)pku.edu.cn

含铀有机废液中微量铀的回收

郭倚天¹, 陈庆德^1,†, 沈兴海^1,†, 邹乐西², 李英秋²

1. 北京大学化学与分子工程学院, 放射化学与辐射化学重点学科实验室, 北京分子科学国家实验室, 北京 100871
2. 中国工程物理研究院, 绵阳 621900

通讯作者: 陈庆德, E-mail: qdchen(at)pku.edu.cn; 沈兴海, E-mail: xshen(at)pku.edu.cn
基金资助:
国家自然科学基金(91226112, 20871009)资助

Abstract

Abstract:

Considering the difficulty to recover trace uranium in organic phase, Na₂CO₃ aqueous solution was used to strip uranium, then the amidoxime adsorbents were chosen to enrich uranyl in the aqueous phase. In the stripping part, the kinetics of stripping, the effects of the concentration of Na₂CO₃ and phase ratio on the stripping efficiency were investigated. Then, in the adsorption part, the effects of shaking rate, the mass of adsorbents and the concentration of Na₂CO₃ were studied. After the validation of the recyclable performance of the amidoxime adsorbents, a process for recovering trace uranium in organic waste liquid was proposed.

Key words: amidoxime, (NH₄)₄[UO₂(CO₃)₃], adsorption, organic waste liquid, stripping

摘要：

针对含微量铀的有机废液中铀难以回收的难题, 选择Na₂CO₃水溶液对有机相中的铀进行反萃, 得到碱性含铀水溶液, 并应用偕胺肟基吸附材料进行富集。考察了碳酸盐对有机相中铀的反萃过程中反萃动力学、碳酸钠浓度以及相比的影响, 探究吸附过程中振荡速率、吸附材料使用量、溶液中CO₃^2-浓度等参数的影响, 研究了偕胺肟基吸附材料的重复利用性。在此基础上, 提出了从有机废液中高效富集与回收微量铀的流程。

关键词: 偕胺肟, 三碳酸铀酰铵, 吸附, 有机废液, 反萃

CLC Number:

GUO Yitian, CHEN Qingde, SHEN Xinghai, ZOU Lexi, LI Yingqiu. Recovery of Trace Uranium in Organic Waste Liquid[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2016, 52(6): 1050-1056.

郭倚天, 陈庆德, 沈兴海, 邹乐西, 李英秋. 含铀有机废液中微量铀的回收[J]. 北京大学学报（自然科学版）, 2016, 52(6): 1050-1056.

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Recovery of Trace Uranium in Organic Waste Liquid

含铀有机废液中微量铀的回收

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