Aqueous Partitioning of Minor Actinides by Different Processes

Supported liquid membrane transport studies on Am(III), Pu(IV), U(VI) and Sr(II) using irradiated TODGA

“…This behaviour is in sharp contrast to those observed with reagents such as CMPO (carbamoylmethylphosphine oxide), DIDPA (diiso-decylphosphoric acid) and TRPO (tri-n-octylphosphine oxide) where an opposite trend is reported [1,2]. Moreover, the diglycomades are preferred due to their ease of synthesis, complete incinerability and easy clean-up from the degradation products which are by and large innocuous [3].…”

Triazole Diglycolamide Cavitand for lanthanide extraction

“…DGAs consist of C, H, N, and O atoms and can be incinerated completely to form gaseous products after utilization [13][14][15][16]. Though several DGA compounds have been studied, the effect of DGA unit preorganization in a macrocyclic platform used in REE extraction has not been examined in detail.…”

New extractant N,N′-dimethyl-N,N′-dicyclohexyl-2,(2′-dodecyloxyethyl)-malonamide (DMDCDDEMA) for radiotoxic acidic waste remediation: Synthesis, extraction and supported liquid membrane transport studies

“…In this context, the recovery of long-lived alpha emitting minor actinides (MAs) such as 241 Am, 243 Am, 245 Cm, 237 Np, and the residual Pu, present in high level waste (HLW) solutions is a major challenge and a great environmental concern [3]. Therefore, partitioning and transmutation (P&T) strategy is being evaluated for effective mitigation of these long-term hazards [4,5]. However, actinide partitioning (AP) studies are currently focused on the synthesis and evaluation of several environmentally benign extractant molecules.…”

“…Substituted diamides (also known as tetra or penta alkyl malonamides) have shown promise in view of their distinct advantages over the conventional organophosphorous extractants such as innocuous nature of the radiolytic degradation products, complete incinerability, and ease of synthesis [4][5][6][7][8][9]. Unlike other proposed extractants for actinide partitioning, malonamides do not display any third-phase formation problem under HLW conditions.…”

“…Several organophosphorus as well as malonamide based extractants have been proposed and evaluated for the recovery of actinides and lanthanides from HLW [4]. Substituted diamides (also known as tetra or penta alkyl malonamides) have shown promise in view of their distinct advantages over the conventional organophosphorous extractants such as innocuous nature of the radiolytic degradation products, complete incinerability, and ease of synthesis [4][5][6][7][8][9].…”