Exploring the potential of Gloeomargarita lithophora for radionuclides bioremediation DOI Creative Commons

Edern Pamart,

Karim Benzerara, Giovanna Rosa Fois

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 138155 - 138155

Published: April 1, 2025

Current physico-chemical techniques for remediating 90Sr traces from effluents are costly and can exhibit a low selectivity Sr over Ca. Therefore, there is an incentive to develop alternative method. In this study, we demonstrate that the cyanobacterium Gloeomargarita lithophora rapidly remove more than 90 % of activity nuclear plant effluent within 24 h. This process occurs through two steps: first rapid passive phase sorbtion cell surface, followed by active accumulation cells, partially driven photosynthesis. We show sequestration G. cells stable with no release into surrounding medium. Furthermore, evidence incorporation 2.05 × 107 Bq g-1DCW exposure estimated dose rate 1.7 mGy h-1 5 days did not result in death. To go further development bioremediation method, established capacity sequester synthetic medium mimicking radioactivity mineral composition real industrial effluent. These results highlight as promising solution effective water contaminated 90Sr, especially effluents.

Language: Английский

Exploring the potential of Gloeomargarita lithophora for radionuclides bioremediation DOI Creative Commons

Edern Pamart,

Karim Benzerara, Giovanna Rosa Fois

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 138155 - 138155

Published: April 1, 2025

Current physico-chemical techniques for remediating 90Sr traces from effluents are costly and can exhibit a low selectivity Sr over Ca. Therefore, there is an incentive to develop alternative method. In this study, we demonstrate that the cyanobacterium Gloeomargarita lithophora rapidly remove more than 90 % of activity nuclear plant effluent within 24 h. This process occurs through two steps: first rapid passive phase sorbtion cell surface, followed by active accumulation cells, partially driven photosynthesis. We show sequestration G. cells stable with no release into surrounding medium. Furthermore, evidence incorporation 2.05 × 107 Bq g-1DCW exposure estimated dose rate 1.7 mGy h-1 5 days did not result in death. To go further development bioremediation method, established capacity sequester synthetic medium mimicking radioactivity mineral composition real industrial effluent. These results highlight as promising solution effective water contaminated 90Sr, especially effluents.

Language: Английский

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