Recovery of uranium and plutonium from pyrochemical salt matrix using supercritical fluid extraction

KC Pitchaiah, K Sujatha, J Deepitha, S Ghosh… - The Journal of …, 2019 - Elsevier
Pyrochemical reprocessing of spent nuclear fuel involves use of molten salts for the
separation of actinides from fission products. Salt waste arising from this process contains …

Solubility of dialkylalkyl phosphonates in supercritical carbon dioxide: Experimental and modeling approach

KC Pitchaiah, CVSB Rao, N Sivaraman, M Joseph… - Fluid Phase …, 2017 - Elsevier
Dialkylalkyl phosphonates have found renewed interest in the selective extraction of
actinides from different matrices. In this context, two dialkylalkyl phosphonates, dibutylbutyl …

Experimental determination and model correlation for the solubilities of trialkyl phosphates in supercritical carbon dioxide

KC Pitchaiah, N Sivaraman, N Lamba, G Madras - RSC advances, 2016 - pubs.rsc.org
The solubilities of a series of trialkyl phosphates in supercritical carbon dioxide have been
investigated. The solubility measurement was carried out using a dynamic flow method. The …

Supercritical fluid extraction of uranium and thorium from nitric acid medium using organophosphorous compounds

KC Pitchaiah, K Sujatha… - Radiochimica …, 2015 - degruyter.com
Abstract In recent years, Supercritical Fluid Extraction (SFE) technique has been widely
used for the extraction of metal ions. In the present study, extraction of uranium from nitric …

Solubility of tri-iso-amyl phosphate in supercritical carbon dioxide and its application to selective extraction of uranium

KC Pitchaiah, N Sivaraman, M Joseph… - Separation Science …, 2017 - Taylor & Francis
The solubility of tri-iso-amyl phosphate (TiAP) in supercritical carbon dioxide (SCCO2) was
determined at 313–333 K with pressure ranging from 10 to 25 MPa. The solubility data of …

[HTML][HTML] Influence of Co-Solvent on the Extraction Behaviour of Uranium and Thorium Nitrates with Organophosphorous Compounds

KC Pitchaiah, K Sujatha, CVSB Rao… - International Journal of …, 2014 - scirp.org
Supercritical Fluid Extraction (SFE) is emerging as a powerful technique in the extraction of
metal ions. In the present study, the extraction of nitrates of uranium and thorium was carried …

[PDF][PDF] Supercritical Fluid Extraction of Uranium, Plutonium and Thorium: A Review

P Kumar - Message from Dr R. Chidambaram, 2022 - isasjournal.isasbharat.in
In recent decades, extraction of actinides (U, Pu, Th) employing supercritical CO2 has drawn
attention owing to its inherent potential to minimize liquid waste generation. Supercritical …

[HTML][HTML] Analytical Approach to Clusters in near Critical CO2

B Sedunov, I Brondz - … Journal of Analytical Mass Spectrometry and …, 2016 - scirp.org
Clusters greatly influence thermophysical properties of near critical gases. The cluster
structures of supercritical fluids in general and Carbon Dioxide especially are important for …

[HTML][HTML] Solubility modeling of N-CBZ derivatised amino acids in supercritical carbon dioxide

N Vedaraman, P Gadkari, B Manohar… - International Journal of …, 2014 - scirp.org
The experimental solubility of CBZ (Carbobenzoxy) derivatized amino acids namely N-CBZ
valine, N-CBZ proline, N-CBZ aspartic acid in supercritical carbon dioxide were correlated …

Green solvents for radionuclides extraction

M El-Maghrabey, MA El Hamd, R El-Shaheny… - … Sustainable Process for …, 2021 - Elsevier
This chapter presents the fundamentals and applications of green solvents as alternate
environmentally friendly and safe solvents for extraction of radionuclides. At the beginning of …