Un nuevo procedimiento para el fraccionamiento de uranio
- Eduardo Costas
- Beatriz Baselga
- Francisco Tarín
ISSN: 1137-2885
Year of publication: 2015
Issue: 360
Pages: 74-79
Type: Article
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%).