Crushed concrete from old nuclear facilities could prove more valuable for managing radioactive land than previously thought. A study published in ACS ES&T Water by scientists at the University of Manchester, the United Kingdom National Nuclear Laboratory, and Clemson University examined how this material interacts with strontium-90.
The mobile radioactive contaminant is a persistent problem at legacy sites like Sellafield in the UK and Hanford in the US. The research opens the door to a novel remediation strategy using existing demolition waste from these very facilities.
Strontium-90 moves easily through soil and groundwater, making containment challenging. The concrete's chemical composition appears to bind the contaminant, potentially halting its spread and reducing environmental risks.
The work suggests that materials already on-site could be repurposed rather than shipped elsewhere for disposal. This could lower cleanup costs and accelerate remediation timelines at some of the world's most contaminated nuclear zones.
Further testing is needed to confirm long-term effectiveness under real-world conditions. The researchers emphasize that the approach is still in early stages and requires validation before field deployment.