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Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
Published on: June 21, 2015
Uranium removal from a contaminated effluent using a combined microbial and nanoparticle system
Mar Baiget1, Magda Constantí, M Teresa López
1Fundació URV, Av. Països Catalans, 18, 43007 Tarragona, Spain.
New Biotechnology
|May 22, 2013
Summary
This study shows that combining lactate and iron nanoparticles on active carbon effectively removes uranium(VI) from contaminated effluent. This integrated system offers a promising solution for uranium bioremediation.
Area of Science:
- Environmental Science
- Microbiology
- Nanotechnology
Background:
- Uranium(VI) contamination in effluents poses environmental risks.
- Bioremediation strategies are sought for efficient uranium removal.
- Previous attempts using Shewanella putrefaciens were ineffective in the specific effluent (EF-03).
Purpose of the Study:
- To develop an efficient integrated system for uranium(VI) reduction and removal from contaminated effluent (EF-03).
- To evaluate the synergistic effects of biotic and abiotic components in uranium remediation.
Main Methods:
- Stimulation of autochthonous microorganisms with lactate.
- Utilizing iron nanoparticles (50 nm) for abiotic reduction.
- Immobilizing lactate and iron nanoparticles on active carbon for an integrated system.
- Monitoring uranium(VI) removal efficiency and kinetics.
Main Results:
- Lactate alone on active carbon removed 77% of U(VI) in 4 days.
- Iron nanoparticles alone removed 60% of U(VI) in 4 hours.
- The integrated system (lactate + iron nanoparticles on active carbon) achieved 96% U(VI) removal in 30 minutes.
- Lactate successfully stimulated indigenous uranium-reducing microorganisms in EF-03.
Conclusions:
- An integrated bioremediation system combining lactate and immobilized iron nanoparticles is highly effective for uranium(VI) removal.
- This approach significantly enhances the efficiency and speed of uranium remediation in contaminated effluents.
- The developed system shows great potential for practical application in treating uranium-contaminated wastewater.
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