Publications by authors named "Nicholas K Masters-Waage"
Iron nanoparticles are a promising new technology to treat contaminated groundwater, particularly as they can be engineered to optimise their transport properties. Technetium is a common contaminant at nuclear sites and can be reductively scavenged from groundwater by iron(II). Here we investigated the potential for a range of optimised iron nanoparticles to remove technetium from contaminated groundwater, and groundwater/sediment systems.
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- The study investigates how repeated cycles of reduction and oxidation affect technetium (Tc) contamination in sediments from the Sellafield Ltd. nuclear site in the UK.
- After multiple redox cycles over 1.5 years, the remobilization of Tc from sediment into solution significantly decreased.
- The research shows that Tc becomes more stable when it forms hydrous TcO-like chains and interacts with iron (Fe) phases, affecting its long-term mobility in the environment.