Solvent Extraction Recovery of Byproduct¹³⁷Cs and⁹⁰Sr from HNO₃Solutions—A Technology Review and Assessment

Selectivity of cesium from fission radionuclides using resorcinol–formaldehyde and zirconyl-molybdopyrophosphate as ion-exchangers

“…For an effective application, the organic and/or inorganic ion-exchangers are supposed to contain ions that are exchangeable with others present in a solution in which it is considered to be in soluble. During the past few years, a wider application of organic and inorganic ion-exchangers in nuclear waste treatment has been investigated for fission and activation product elimination [1][2][3][4][5] which may be attributed to the selectivity and high-capacity measurements of organic resins and the excellent chemical, thermal and radiation stabilities as well as superior selectivity of inorganic ion-exchangers [6][7][8][9]. This paper is concerned with the preparation and characterization of both resorcinol-formaldehyde as an organic ion-exchanger and zirconyl-molybdoprophosphate as an inorganic ion-exchanger to be used in a comparative study for E-mail address: dr.sshady@yahoo.com.…”

Extraction behavior of strontium from nitric acid solution with N,N,N′,N′-Tetraisobutyl diglycolamide

“…Schulz et al [1] have made comments on this issue. The extraction of strontium from acidic HLLW solution is considered to be one of the most challenging topics in radiochemistry and chemical *Corresponding author.…”

Multi-staging for extraction of cesium from nitric acid by a single liquid–liquid countercurrent centrifugal extractor with Taylor vortices

“…The determinant matrix is derived by the Newton-Raphson method (9) By solving these equations using the Fortran code, the concentration of Cs in the aqueous phase in each bath (X Cs,n ) is calculated. The percent extraction corresponding to the nth theoretical stage is calculated as follows:…”

“…In advanced chemical reprocessing, it has been proposed that trivalent actinides and trivalent lanthanides, which have similar chemical properties [5,6], should be separated and other reusable materials such as platinum group metals and rare earth metals are also expected to be separated [7,8]. Furthermore, separating heat-emitting and radioactive fission products, such as 137 Cs and 90 Sr [9][10][11][12][13][14], minimizes the time until the radioactivity reaches the same level as natural uranium ore and reduces the space needed for final geological disposal.…”