Representatives of Urenco, the United Kingdom, the United States, Germany, the Netherlands, and the IAEA gathered at Urenco’s Capenhurst site. (Photo: Urenco)
Uranium enricher Urenco welcomed representatives from the International Atomic Energy Agency to an August 19 event to mark the creation of an IAEA Centre of Excellence for Safeguards and Non-Proliferation at its Capenhurst, England, site. Representatives of the three nations with ownership stakes in Urenco—the United Kingdom, the Netherlands, and Germany—were joined by representatives from the United States, where Urenco also operates an enrichment plant. Urenco expects the new center to be fully operational in 2025.
Photo: The Schwarzenegger Climate Initiative
Actor and politician Arnold Schwarzenegger recently criticized Germany for shutting down its remaining nuclear power plants last year. Speaking in June in his native Austria at the 2024 Austrian World Summit, a climate conference held in Vienna, Schwarzenegger noted the contradiction of the German government’s stated goal of cutting carbon emissions while simultaneously eliminating the clean-energy source of nuclear power.
An artistic representation of a Desulfosporosinus cell with immobilized uranium on the surface. (Image: B. Schröder/HZDR)
Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) research laboratory in Germany have investigated a microorganism capable of transforming water-soluble hexavalent uranium [U(VI)] to the less-mobile tetravalent uranium [U(IV)]. The researchers found that the sulfate-reducing bacterium Desulfosporosinus hippei, a relative of naturally occurring microorganisms present in clay rock and bentonite, showed a relatively fast removal of uranium from clay pore water.
The Neckarwestheim nuclear power plant in Germany.
Ignoring a last-minute plea from a long list of scientific luminaries (including Nobel laureate Steven Chu and climate scientist James Hansen) to reconsider, as well as recent polls showing pronuclear sentiment among a majority of its population, Germany shut down its last three operating nuclear power plants late Saturday, ending 60-plus years of electricity generation from fission. (Germany’s first nuclear power plant, Kahl, was commissioned in 1961 and closed in 1985.)
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The challenges of climate change are bringing nuclear energy back into focus. Even in Germany, which decided on a general nuclear phaseout in 2011 as a response to the Fukushima disaster that year, nuclear energy is again being discussed as a bridging technology. Compared with fossil fuels, nuclear saves considerable greenhouse gases. However, for a holistic view of CO2 emissions from power plants, the procurement, maintenance, and repair of plant components must also be considered. At the very least, the CO2 emissions caused by the high costs of testing and maintaining a nuclear power plant can be reduced.
Europeans are taking resolute steps to reduce their output of climate-changing gases, but some countries are moving in the wrong direction.
Europeans are taking resolute steps to reduce their output of climate-changing gases, but some countries are moving in the wrong direction.
Many countries are adding solar and wind, which are low-carbon energy sources. Some have moved to biomass, the value of which as a climate cure is not clear. A few are adding reactors, while others are defining nuclear as dirty energy and natural gas as “clean” and are changing their generation mix accordingly.