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Koladkar, D. V.; Dhadke, P. M.

doi:10.1023/a:1019666213038

Cited by 22 publications

(4 citation statements)

References 13 publications

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“…7 LIX-360 (HX) in kerosene and Versalic-10 was also used for extraction studies of U(VI). 8 In addition, 2-hydroxy-1-naphthaldehyde thiosemicarbazone was used to study the extraction behaviour of Th(IV) from HNO 3 in the presence of donors, trioctylphosphine oxide (TOPO), Calix [3]OH [3]OMe [6]arene, trioctyl amine (TOA) and DMSO in ethyl acetate solvent. 9 A new chelating polymeric sorbent was developed using Merrifield chloromethylated resin anchored with di-bis(2-ethylhexyl)malonamide (DB2EHM) for the selective extraction of U(VI) and Th(IV) from an acidic stream.…”

Section: Ghag and Pawarmentioning

confidence: 99%

“…The metal ions were stripped from the metal-loaded organic phases of Cyanex-923 with different strengths of acids such as HCl, HNO 3 (Table I). …”

Section: Effect Of Stripping Agentmentioning

confidence: 99%

“…1 Preston et al 2 performed the extraction of U(VI) and Th(IV) from NaNO 3 media using N-alkylcarboxylic acid amide. Quantitative extraction of Th(IV) and U(VI) from HNO 3 media was investigated by Dhadke et al 3 using bis-(2-ethylhexyl) phosphinic acid (PIA-8) and bis(2-ethylhexyl) phosphoric acid (HDEHP).…”

Section: Introductionmentioning

confidence: 99%

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Extraction and separation of U(VI) and Th(IV) from hydrobromic acid media using Cyanex-923 extractant

Ghag¹,

Pawar²

2010

JSCS

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A systematic study of the solvent extraction of uranium(VI) and thorium(IV) from hydrobromic acid media was performed using the neutral phosphine oxide extractant Cyanex-923 in toluene. These metal ions were found to be quantitatively extracted with Cyanex-923 in toluene in the acidity range 5x10-5-1x10-4 M and 5x10-5-5x10-3 M, respectively, and they are stripped from the organic phase with 7.0 M HClO4 and 2.0- 4.0 M HCl, respectively. The effect of the equilibrium period, diluents, diverse ions and stripping agent on the extraction of U(VI) and Th(IV) was studied. The stoichiometry of the extracted species of these metal ions was determined based on the slope analysis method. The extraction reactions proceed by solvation and their probable extracted species found in the organic phase were UO2Br2•2Cyanex-923 and ThBr4•2Cyanex-923. Based on these results, a sequential procedure for their separation from each other was developed

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Section: Ghag and Pawarmentioning

confidence: 99%

“…The metal ions were stripped from the metal-loaded organic phases of Cyanex-923 with different strengths of acids such as HCl, HNO 3 (Table I). …”

Section: Effect Of Stripping Agentmentioning

confidence: 99%

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Extraction and separation of U(VI) and Th(IV) from hydrobromic acid media using Cyanex-923 extractant

Ghag¹,

Pawar²

2010

JSCS

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“…The significant positive correlation (0.001 ≤ p < 0.01) between the 232 Th activity concentration and TN content in soil could be explained as follows: Th and nitrate readily react [57]. There was a significant strong positive correlation (p < 0.001) between the soil radionuclides 238 U and 226 Ra in the study area since 238 U decays into 226 Ra, and they are both in the same decay sequence [13,19].…”

Section: Correlation Analysismentioning

confidence: 78%

Heavy Metals/Metalloids in Soil of a Uranium Tailings Pond in Northwest China: Distribution and Relationship with Soil Physicochemical Properties and Radionuclides

Yong

Liu

et al. 2022

Sustainability

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Uranium tailings ponds have a potential impact on the soil ecological environment and human health. In this study, the measurement and spatial distribution characteristics of soil physicochemical properties (pH, EC, TN, TOC, and TP) and heavy metals/metalloids (Cd, Pb, Zn, Cr, and As) in two different profiles (0–5 cm, 5–15 cm) were completed and visualized in a decommissioned uranium tailings pond in Northwest China. The results showed that almost all measured values in the study area were within the background values of China and other countries or regions around the world. The visual spatial distribution map showed that the spatial distribution characteristics of the EC, TP content, Pb content, and Cr content of the soil in the tailings pond and its adjacent area increased with the increase in depth of the vertical profile. The visual correlation heatmap analysis found that, in general, there were significant positive correlations among heavy metals and radionuclides and significant negative correlations among heavy metals, radionuclides, and physicochemical properties. The cluster tree divided environmental factors into two clusters; pH, TP, 40K, Cd, and Zn formed one cluster, which could be related to the similar structures and physicochemical properties of Cd and Zn, and Pb, Cr, 232Th, TN, EC, TOC, As, 238U, and 226Ra formed another cluster of lithophile elements with similar geochemical properties. Based on the analysis results, the uranium tailings pond is in good operation, and no migration and diffusion of heavy metals/metalloids to the surrounding soil ecological environment was found.

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Extraction of U(VI) with Cyanex 302

Karve

Gaur

2007

J Radioanal Nucl Chem

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Untitled

Cited by 22 publications

References 13 publications

Extraction and separation of U(VI) and Th(IV) from hydrobromic acid media using Cyanex-923 extractant

Extraction and separation of U(VI) and Th(IV) from hydrobromic acid media using Cyanex-923 extractant

Heavy Metals/Metalloids in Soil of a Uranium Tailings Pond in Northwest China: Distribution and Relationship with Soil Physicochemical Properties and Radionuclides

Extraction of U(VI) with Cyanex 302

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