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Reference Number EP/S032797/1
Title Electrokinetic Separation for Enhanced Decontamination of Soils and Groundwater Systems
Status Started
Energy Categories NUCLEAR FISSION and FUSION(Nuclear Fission, Nuclear supporting technologies) 100%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Chemistry) 30%;
ENGINEERING AND TECHNOLOGY (Chemical Engineering) 40%;
ENVIRONMENTAL SCIENCES (Earth Systems and Environmental Sciences) 30%;
UKERC Cross Cutting Characterisation Sociological economical and environmental impact of energy (Environmental dimensions) 100%
Principal Investigator Dr D Harbottle
No email address given
Inst of Particle Science & Engineering
University of Leeds
Award Type Standard
Funding Source EPSRC
Start Date 01 August 2019
End Date 23 May 2023
Duration 46 months
Total Grant Value £378,287
Industrial Sectors Energy
Region Yorkshire & Humberside
Programme Energy : Energy
 
Investigators Principal Investigator Dr D Harbottle , Inst of Particle Science & Engineering, University of Leeds (99.999%)
  Other Investigator Dr T Hunter , Inst of Particle Science & Engineering, University of Leeds (0.001%)
  Industrial Collaborator Project Contact , Sellafield Ltd (0.000%)
Project Contact , SNC-Lavalin, Canada (0.000%)
Web Site
Objectives
Abstract Safely managing the legacy of first generation nuclear power, reducing nuclear risks and hazards, has in recent years become a priority for the nuclear industry both in the UK and Republic of Korea (ROK) as downscaling continues in the interim to 'new nuclear'. The Nuclear Decommissioning Authority (NDA, UK) estimate the total cost of decommissioning first generation nuclear power to be 121 B over the next 120 years, with significant costs associated to the management of spent fuel and legacy wastes. However, substantial effort is also directed towards remediating sites prior to their next planned use.Remediating soils and groundwater is extremely challenging due to the low-levels of radionuclide contaminants encountered in the environment and their strong association with clays, rendering simple washing of contaminated soils inadequate. The challenge to successfully remediate is pointedly highlighted by the vast quantities of soils which have now been removed and stored at interim facilities following the incident at the Fukushima Daiichi Nuclear Power Plant. Substantial disturbance to the ecosystem is discouraged and methods to remediate soils and groundwater in-situ are highly favored.The proposed research will consider in-situ remediation by chemical-enhanced electrokinetic separation to desorb Cs and Sr from difficult clay types. Chemical treatment using non-ionic, biodegradable polymers will be explored as a method to expand clay interlayers and recover ions which have become 'trapped' in clay particles. Once desorbed the mobile ions should be recovered to prevent their migration. Our partners at KAIST, ROK will design novel adsorbents to isolate ions at the cathode via electrochemical separation and by adsorption using 2D fabricated composite membranes that are impermeable to the selected ions to deliver rapid sorption kinetics and high adsorption capacity.The research will advance understanding on appropriate methods to desorb ions from different lay types and successfully capture mobile ions, locally concentrating the contaminants and reducing the volume of waste for ultimate disposal. As decommissioning programs advance, remediation of soils and groundwater systems will come into focus. Installing in-situ technologies which can achieve high decontamination levels, require minimal engineering support, and do not cause long-term damage to the local ecosystem are highly desired and have the potential to accelerate remediation timescales and reduce the full lifetime costs of decommissioning legacy nuclear sites.Finally, the UK-ROK international collaboration and industry partnership has an opportunity to enhance public confidence in the nuclear sector, engaging with future engineers and the general public who will witness a nuclear sector moving away from 'care and maintenance' to actively returning legacy sites to their desired end-state, all at the same time as growing 'new nuclear' and moving waste to its ultimate destination in a geological disposal facility.
Publications (none)
Final Report (none)
Added to Database 23/08/19