SAXS study of iron oxide floc formation during the Enhanced Actinide Removal Process (EARP)

  • Shaw, Samuel (Principal Investigator)
  • Bots, Pieter (Co-investigator)
  • Morris, Katherine (Co-investigator)
  • Weatherill, Joshua (Co-investigator)

Project: Research

Project Details


Beamtime at the Small Angle X-ray Scattering beamline (I22) at Diamond Light Source, funded through the Diamond - Manchester collaboration.

Abstract of research proposal:
Iron (oxyhydr)oxide treatment processes are widely utilised for the removal of contaminates from industrial waste One of the largest and most crucial treatment facilities of this type in the UK is the Enhanced Actinide Removal Plant (EARP) at Sellafield which removes alpha activity (e.g. U and Pu) and reduces beta activity (e.g. 90Sr and 137Cs) from radioactive effluent streams.
This project will aim to quantify the mechanisms of iron (oxyhydr)oxide nanoparticles formation and aggregation from a acidic solution to fully formed floc, focusing on understanding the chemical conditions relevant to EARP. To achieve this, in situ timeresolved Small Angle X-ray Scattering (SAXS) experiments will be performed. The fundamental information will provide the underpinning knowledge required to understand and control the mechanism of radionuclide sequestration in EARP.
Effective start/end date15/10/1417/10/14