Extracting Uranium from SEAWATER

Scientists in China have developed an organic material to extract uranium from seawater. The material is said to be cost-effective and has “exceptional uranium adsorption capability.”

Uranium, a nonrenewable energy source and the primary heavy metal used to fuel nuclear reactors, has been essential for nuclear power. The metal has traditionally been mined from rock but now scientists aim to extract uranium ore from seawater.

Researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) selected affordable sodium alginate (SA) and functional DNA strands to fabricate SA-DNA hydrogel microspheres for the selective adsorption of uranyl ions (UO22+) in an economically viable manner.

Higher selectivity for uranium
Compared to reported advanced adsorbents utilizing the amidoxime group for uranium extraction, the SA-DNA hydrogel microspheres demonstrated significantly higher selectivity for uranium, with uranium-to-vanadium ratios of 43.6 in simulated seawater and 8.62 in natural seawater.         READ MORE...

Moreover, this new absorbent is environmentally friendly, cost-effective, easily synthesized, and with impressive mechanical robustness and recyclability. Owing to the distinct ability of specific DNAzymes to recognize various metal ions, such DNA-based adsorbents may be utilized to retrieve other valuable metal ions from seawater, according to the study.

Boosting Domestic Uranium Production

The U.S. and Europe face challenges with uranium supply due to dependence on Russian imports and global shortages.

The U.S. is advancing in high-assay low-enriched uranium (HALEU) production with projects like Centrus Energy Corp's facility in Ohio.

The U.K. plans to invest in developing HALEU production capabilities for its next-generation nuclear reactors.

There is great potential for several new uranium production markets as the U.S. and Europe look to diversify away from Russia for new nuclear energy pursuits. The U.S. and several European countries have announced ambitious nuclear power plans for the coming decades, in support of a green transition. 

However, the lack of uranium production outside of Russia is posing a threat to achieving these plans. Sanctions introduced on Russian energy and other products, following the 2022 Russian invasion of Ukraine, have led to global shortages of natural gas, uranium, and other critical materials. 

This has driven several state powers to diversify their supply chains and increase the regional production of a variety of energy sources and related materials. This means we could soon see new uranium-producing markets emerge in Europe and the U.S.  READ MORE...