A procedure for removing uranium, thorium, and potassium-40 microimpurities from a liquid organic scintillator based on linear alkylbenzene

I. R. Barabanov; L. B. Bezrukov; A. V. Veresnikova; V. I. Gurentsov; V. P. Morgalyuk; G. Ya. Novikova; E. A. Yanovich

doi:10.1134/S1066362216010082

A procedure for removing uranium, thorium, and potassium-40 microimpurities from a liquid organic scintillator based on linear alkylbenzene

Authors: Barabanov I.R.¹, Bezrukov L.B.¹, Veresnikova A.V.¹, Gurentsov V.I.¹, Morgalyuk V.P.², Novikova G.Y.¹, Yanovich E.A.¹
Affiliations:
1. Institute for Nuclear Research
2. Nesmeyanov Institute of Organoelement Compounds
Issue: Vol 58, No 1 (2016)
Pages: 52-58
Section: Article
URL: https://ogarev-online.ru/1066-3622/article/view/223332
DOI: https://doi.org/10.1134/S1066362216010082
ID: 223332

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Abstract

A procedure was developed for removing uranium, thorium, and potassium from a liquid organic scintillator based on linear alkylbenzene (LAB) by stripping with water. The volume ratio of the scintillator and water in the process should be no less than 1: 5. The attenuation length (L₄₂₀) of LAB after treatment with water does not change and is as high as 13.0 ± 1.8 m. The solubility of water in LAB and of LAB in water was determined to be 46 and 5.1 ppm, respectively.

Keywords

extraction, stripping, uranium, thorium, potassium, linear alkylbenzene (LAB), trioctylphosphine oxide (TOPO), 3,5,5-trimethylhexanoic acid (TMHA)