Un nuevo procedimiento para el fraccionamiento de uranio

1. Eduardo Costas
2. Beatriz Baselga
3. Francisco Tarín

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More publications in: Nuclear España: Revista de la Sociedad Nuclear española

Abstract

We propose a new biological process for uranium isotopic fractionation based on Chlamydomonas cf. fonticola (microalgae) isolated from a pond extremely contaminated by uranium (≈ 25 ppm) from the ENUSA mine in Saelices (Salamanca, Spain) and genetically improved. The metabolic activity of this genetically improved ChlSPGI strain allows recover 115 mg of U per gram of micoralgal biomass in a short time (because this strain complete their cell cycle in ≈ 24 hours). During this process ChlSPGI microalgae selectively captures 235U conducting an isotopic enrichment of 235U (235U δ = + 3,983%).

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