Recuperación eficaz de uranio utilizando microalgas genéticamente mejoradas

1. Victoria López-Rodas
2. Estefania Conde
3. Camino García

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Andere Publikationen in: Nuclear España: Revista de la Sociedad Nuclear española

Zusammenfassung

We propose an alternative process for the efficient recovery of dissolved uranium based on genetically improved microalgae. We isolated Chlamydomonas cf. fonticola from a pond extremely contaminated by uranium (≈ 25 ppm) from ENUSA U-mine, Saelices (Salamanca, Spain). After a process of genetic improvement we obtained a strain capable to recover 115 mg of U per g of dry weight, by mean of bio-adsorption on the cell wall (mostly) and intra-cytoplasm bioaccumulation. Such a genetically improved microalgae resist extremes of acidity and pollution, but even its dead biomass is still able to recover a large amount of uranium.

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