Description:
Reference #: 1740
The University of South Carolina is offering licensing opportunities for Electrochemical isotope separation apparatus and uses thereof.
Background:
As science and technology progress, the demand for valuable isotopes like deuterium, lithium-6, and uranium-235 has surged. Separating isotopes of the same element remains technically challenging due to their nearly identical chemical and physical properties, limiting the economic feasibility of many separation approaches. For instance, current uranium isotope separation technologies include gaseous diffusion, gas centrifugation, laser isotope separation, and chemical methods. Gaseous diffusion is energy-intensive, while gas centrifugation, although more efficient, requires substantial investment. Laser-based methods offer high precision but involve complex equipment and safety concerns, and chemical methods generally provide low separation efficiency and generate substantial waste.
Invention Description:
This invention provides a groundbreaking redox-mediated electrodialysis (RM-ED) system specifically designed for rapid and energy-efficient isotope separation. The RM-ED system is structured with two current collectors that are separated by a combination of cation exchange membrane (CEM) and anion exchange membrane (AEM) in designed sequence, creating four distinct chambers. A flow electrode circulates between the two outmost chambers next to the current collectors, facilitating electrochemical charging at the anode and discharging at the cathode under an applied voltage. This establishes a dynamically stable electric field for electrodialysis, driving migration of isotope ions from one chamber containing feed stream, through either a CEM or an AEM, to the other product chamber. The flow electrode consists of redox chemicals which undergo electrochemical oxidation/reduction. The CEM and AEM contain functional groups that allow only the passage of cations and anions, respectively. The use of functional groups that have different binding strengths for isotope ions can help to magnify the isotope separation process with significant separation factor. Polymer-based membranes containing a variety of functional groups can be used as CEM or AEM in the RM-ED apparatus for isotope separation.
Potential Applications:
Any industry that focuses on isotope separation, such as the nuclear industry, chemical industry, and manufacturing industry.
Advantages and Benefits:
This invention offers an efficient and cost-effective method for isotope enrichment using low-cost, safe, ion-based materials. The system is commercially viable, can be powered by conventional electrical sources, and is easily adaptable to renewable energy inputs such as solar or wind power.