A5021067120- Radioactive element chemistry and processing
- Chemical Synthesis and Characterization
- Metal-Organic Frameworks: Synthesis and Applications
- Magnetism in coordination complexes
- Radioactive contamination and transfer
- Extraction and Separation Processes
- Covalent Organic Framework Applications
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- X-ray Diffraction in Crystallography
- Corrosion Behavior and Inhibition
- Lanthanide and Transition Metal Complexes
- Medical Imaging Techniques and Applications
- Non-Destructive Testing Techniques
- Nuclear Physics and Applications
- Radiopharmaceutical Chemistry and Applications
Bhabha Atomic Research Centre
2021-2025
Homi Bhabha National Institute
2023-2025
Micro- and meso-porous lanthanide-based on metal–organic frameworks (Ln-MOFs) have been gaining significant attention for the last three decades as they offer diverse applications in a large number of areas.
Radioactive cesium (137Cs+) is one of the most hazardous fission products in radioactive liquid waste due to its large inventory, long half-life (t1/2 ∼30 years) and high environmental mobility. It vital importance retain 137Cs+ within repository boundary. Different clay minerals have shown great potential for scavenging metal ions from earth's critical zone. However, till date molecular level retention mechanisms remain partly understood. Initial characterization vermiculite was carried out...
Selective and efficient separation of pertechnetate (TcO
Due to the long half-life of 137Cs (t1/2 ∼ 30 years), selective extraction cesium (Cs) from high level liquid waste is paramount importance in back end nuclear fuel cycle avoid term surveillance radiotoxic waste. As 1,3-di-octyloxycalix[4]arene-crown-6 (CC6) suggested be a promising candidate for Cs extraction, improvement efficiency by CC6 has been investigated through optimization effect dielectric media on process. The effects feed acid (HNO3, HCl, and HClO4) composition diluents ligand...
In a nuclear facility, the surface of stainless steels (SS) was found to be contaminated during processing radioactive liquid waste. Their safe and secure disposal is highly challenging industry. If fundamental property steel corrosion could evaluated, successful decontamination effective decommissioning strategies planned. Although individual radionuclide contamination behavior on SS metal studied, till date, under exposure high-level waste (HLLW) unexplored. view this, investigations were...
Structural material like stainless steels (SS) was observed to be heavily contaminated by radioactive metal ions during the operation of liquid waste. Their safe, secure and environment friendly management is really challenging nuclear industry. If chemical behavior steel corrosion could determined, effective decontamination as well successful decommissioning process planned. So far, in presence ions, severity corrosion, adsorption Sr on surface under plant operating condition unexplored. To...
ABSTRACTPolyethersulfone (PES) composite beads encapsulating the extractants di-(2-ethylhexyl) phosphoric acid (DEHPA), tributyl (TBP), and mixture of DEHPA & TBP were synthesized. The synthesis was carried out using phase inversion method. Subsequently, these PES applied for recovery plutonium [Pu (IV)] from different aqueous acidic medium. In kinetic studies, extraction Pu (IV) found to be fast equilibrium attained within 5 minutes. batch sorption role acidity nitrate ion concentration on...
Polyethersulfone (PES) based composite beads encapsulated with phosphosphorus ligands, viz., Tri-n-butyl phosphate (TBP), Di-2-ethylhexylphosphoric acid (DEHPA) and (TBP+DEHPA) were synthesized, the encapsulation of ligands in was confirmed by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) thermogravimetric analysis (TGA). These employed for extraction Am (III), Pu (VI) U from nitric feed solution. The trend was: > (III). attainment equilibrium metal ion...
Radioactive cesium (137Cs+) is one of the most hazardous fission products in radioactive liquid waste due to its large inventory, long half-life (t1/2 ~30 years) and high environmental mobility. It vital importance retain 137Cs+ within repository boundary. Different clay minerals have shown great potential for scavenging metal ions from earth’s critical zone. However, till date molecular level retention mechanisms remain partly understood. Initial characterization vermiculite was carried out...
Structural material like stainless steels (SS) was observed to be heavily contaminated by radioactive metal ions during the operation of liquid waste. Their safe, secure and environment friendly management is really challenging nuclear industry. If chemical behavior steel corrosion could determined, effective decontamination as well successful decommissioning process planned. So far, in presence ions, severity corrosion, adsorption Sr on surface under plant operating condition unexplored. To...
ABSTRACTEfficient and selective sequestration of pertechnetate ions (99TcO4–) from nuclear low-level waste (LLW) solution is very much desirable for the safe treatment radioactive liquid waste. However, separation specific radionuclides competitors a huge challenge in science. In fuel cycle, 99TcO4– one troublesome fission products due to long half-life, large inventory spent fuel, significant radiation hazards, high environmental mobility ions. Recently, metal−organic framework (MOFs) has...