DAPPA grafted polymer: an efficient solid phase extractant for U(VI), Th(IV) and La(III) from acidic waste streams and environmental samples

Raju, Ch. Siva Kesava; Subramanian, M. S.

doi:10.1016/j.talanta.2005.02.003

Cited by 51 publications

(14 citation statements)

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“…In general, strong dependency on pH and weak dependency on ionic strength, are consistent with inner-sphere complexation [40]. The results of this work are identical to those derived from the literature [12,13,41], although different adsorbate or adsorbents are investigated in the present work.…”

Section: Resultssupporting

confidence: 87%

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Th(IV) Adsorption onto Oxidized Multi-Walled Carbon Nanotubes in the Presence of Hydroxylated Fullerene and Carboxylated Fullerene

et al. 2013

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Abstract:The adsorption of Th(IV) onto the surface of oxidized multi-walled carbon nanotubes (oMWCNTs) in the absence and presence of hydroxylated fullerene (C 60 (OH) n ) and carboxylated fullerene (C 60 (C(COOH) 2 ) n ) has been investigated. C 60 (OH) n , C 60 (C(COOH) 2 ) n and oMWCNTs have been chosen as model phases because of their representative in carbon nano-materials family. Adsorption experiments were performed by batch procedure as a function of contact time, pH, ionic strength, and temperature. The results demonstrated that the adsorption of Th(IV) was rapidly reached equilibrium and the kinetic process could be described by a pseudo-second-order rate model very well. Th(IV) adsorption on oMWCNTs was dependent on pH but independent on ionic strength. Adsorption isotherms were correlated better with the Langmuir model than with the Freundlich model. The thermodynamic parameters calculated from temperature-dependent adsorption isotherms suggested that Th(IV) adsorption on oMWCNTs was spontaneous and endothermic. Compared with the adsorption of Th(IV) on the same oMWCNTs free of C 60 (OH) n or C 60 (C(COOH) 2 ) n , the study of a ternary system showed the inhibition effect of C 60 (OH) n at high concentration on the adsorption of Th(IV) in a pH range from neutral to slightly alkaline; whereas the promotion effect of C 60 (C(COOH) 2 ) n , even at its low

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Section: Resultssupporting

confidence: 87%

“…Nuclear spent fuels generally contain actinides like thorium, uranium and various fission products [12]. Th(IV) and its compounds are highly toxic that may cause acute toxicological effects for human leading to potential occupational carcinogens [13] and progressive or irreversible renal injury [14,15].…”

Section: Introductionmentioning

confidence: 99%

Th(IV) Adsorption onto Oxidized Multi-Walled Carbon Nanotubes in the Presence of Hydroxylated Fullerene and Carboxylated Fullerene

et al. 2013

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“…It is also interesting to note © Woodhead Publishing Limited, 2011 that all metals could be completely removed from the column with deionized water. Raju and Subramanian (2005, 2007a, 2007b and Maheswari and Subramanian (2005) have used similar grafting techniques to attach other ligands, such as CMPO, dimethyl amino-phosphono-methyl phosphinic acid (DAPPA), N,N,-di-hexyl succinamic acid (DHSA) and 4-ethoxy-N,N-dihexylbutanamide (EDHBA) to Merrifi eld chloromethylated (MCM) or AXAD-16 polymer resins. The authors report the physicochemical properties of these grafted ligand-polymer resins and performed bench-scale tests to evaluate their utility for effecting various U, Th and Ln(III) element separations.…”

Section: Other Solid-phase Extraction Resins With An and Ln Separatiomentioning

confidence: 99%

Solid-phase extraction technology for actinide and lanthanide separations in nuclear fuel reprocessing

Tranter

2011

Advanced Separation Techniques for Nuclear Fuel Reprocessing and Radioactive Waste Treatment

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“…Apart from solvent extraction, organophosphorus compounds have also been utilized in other separation methods to recover and separate REs. Illustrative examples of such methods are fractional precipitation and solid-phase extraction [ 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

α-Aminophosphonates, -Phosphinates, and -Phosphine Oxides as Extraction and Precipitation Agents for Rare Earth Metals, Thorium, and Uranium: A Review

Virtanen

Moilanen

2022

Molecules

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α-Aminophosphonates, -phosphinates, and -phosphine oxides are a group of organophosphorus compounds that were investigated as extraction agents for rare earth (RE) metals and actinoids for the first time in the 1960s. However, more systematic investigations of their extraction properties towards REs and actinoids were not started until the 2010s. Indeed, recent studies have shown that these α-amino-functionalized compounds can outperform the commercial organophosphorus extraction agents in RE separations. They have also proven to be very efficient extraction and precipitation agents for recovering Th and U from RE concentrates. These actinoids coexist with REs in some of the commercially important RE-containing minerals. The efficient separation and purification of REs is becoming more and more important every year as these elements have a pivotal role in many existing technologies. If one also considers the facile synthesis of α-amino-functionalized organophosphorus extractants and precipitation agents, it is expected that they will be increasingly utilized in the extraction chemistry of REs and actinoids in the future. This review collates α-aminophosphonates, -phosphinates, and -phosphine oxides that have been utilized in the separation chemistry of REs and actinoids, including their most relevant synthetic routes and molecular properties. Their extraction and precipitation properties towards REs and actinoids are also discussed.

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DAPPA grafted polymer: an efficient solid phase extractant for U(VI), Th(IV) and La(III) from acidic waste streams and environmental samples

Cited by 51 publications

References 14 publications

Th(IV) Adsorption onto Oxidized Multi-Walled Carbon Nanotubes in the Presence of Hydroxylated Fullerene and Carboxylated Fullerene

Th(IV) Adsorption onto Oxidized Multi-Walled Carbon Nanotubes in the Presence of Hydroxylated Fullerene and Carboxylated Fullerene

Solid-phase extraction technology for actinide and lanthanide separations in nuclear fuel reprocessing

α-Aminophosphonates, -Phosphinates, and -Phosphine Oxides as Extraction and Precipitation Agents for Rare Earth Metals, Thorium, and Uranium: A Review

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