Decontamination and regeneration of irradiated graphite

A sonoelectrochemical device for removing contaminated graphene and/or graphene derivatives from irradiated nuclear graphite suspended in an electrolyte, the device comprising:

• a flow reactor configured to circulate the irradiated nuclear graphite and electrolyte suspension, wherein the flow reactor comprises:
• an anode in contact with the electrolyte;
• one or more cathodes in contact with the electrolyte and configured to receive the contaminated graphene and/or graphene derivatives from the electrolyte;
• one or more ultrasonic transducers in contact with the electrolyte;
• and
• a controller configured to apply ultrasound to the electrolyte through the one or more ultrasonic transducers and an electrical potential between the anode and the one or more cathodes to cause exfoliation of the contaminated graphene and/or graphene derivatives from the irradiated nuclear graphite into the electrolyte.