Invention Grant
- Patent Title: Process for the removal of 99Tc from liquid intermediate level waste of spent fuel reprocessing
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Application No.: US16076523Application Date: 2017-05-09
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Publication No.: US10553324B2Publication Date: 2020-02-04
- Inventor: Jayesh Gopaldas Shah , Sumit Pahan , Arvind Ananthanarayanan
- Applicant: Secretary, Department of Atomic Energy
- Applicant Address: IN Mumbai
- Assignee: Secretary, Department of Atomic Energy
- Current Assignee: Secretary, Department of Atomic Energy
- Current Assignee Address: IN Mumbai
- Agency: The Webb Law Firm
- International Application: PCT/IN2017/050170 WO 20170509
- International Announcement: WO2018/207195 WO 20181115
- Main IPC: G21F9/12
- IPC: G21F9/12 ; C22C38/00 ; G21F9/16 ; G21F9/30 ; C22C38/04 ; C22C38/02 ; C22C38/44
Abstract:
Provided herein is a process for removal of 99Tc from liquid intermediate level waste (ILW) of spent fuel reprocessing including the steps of: adding HNO3 to ILW till the pH is 2 to destroy the carbonates, transferring the ILW derived of carbonates to a tank containing mild steel wool (msw) for 4 to 48 hrs, subjecting the ILW and MS Wool to the step of separation, discharging the supernatant solution free of 99Tc and retaining the corrosion products (goethite(FeOOH/magnetite), subjecting the said corrosion products to the step of vitrification, and storing the said vitrified 99Tc bearing waste.
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