Preparations of PAN-based adsorbers for separation of cesium and cobalt from radioactive wastes

Adsorption of cesium on copper hexacyanoferrate–PAN composite ion exchanger from aqueous solution

“…1): (a) polyacrylonitrile, (b) CHCF, and (c) CHCF-PAN, it was observed that the XRD data of the synthesized CHCF agreed well with those previously reported [17]. It was also observed that there are no diffraction peaks in the XRD pattern of polyacrylonitrile, indicating its amorphous structure.…”

Synthesis and characterization of magnetic hexacyanoferrate (II) polymeric nanocomposite for separation of cesium from radioactive waste solutions

“…Inspection of data illustrates that the mass distribution ratios (K d , mL g À1 ) exhibited values decreased with increasing the concentration of HNO 3 . The values decreased from 320.5, 1139.9, 5757.1, 2002.5, and 1804.7 mL g À1 to 63.6, 107.8, 280.7, 166.1, and 251.1 mL g À1 for samples RF1, RZ1, RZ2, RZ3, and RZ4, respectively, when nitric acid concentration increased from 1 Â 10 -3 to 1 Â 10 -1 mol L À1 .…”

“…The recovery of valuable elements, lanthanides, and actinides from high level nuclear wastes is an area of worldwide concern [1,2]. Among the main fission products released, cesium radioisotopes stand as the most important fission products because of their high fission yield, long half-life ( 137 Cs (T 1/2 $ 30.17 year), 135 Cs (T 1/2 $ 2.3 Â 10 6 year), 134 Cs (T 1/2 $ 2.06 year)) and serious environmental impacts [3]. Radioactive cesium contamination is of serious social and environmental concerns.…”

Synthesis, Characterization and Ion Exchange Properties of a New Composite of Inorganic Ion Exchanger: Polyacrylonitrile Cerium(IV) Molybdophosphate

“…[7] Consequently, PAN as the binding polymer for the granulating of inorganic ion-exchangers was used. [8][9][10] It has been observed that cerium molybdophosphate (CMP) has high selectivity toward some metal ions such as Cs, Rb, Pb and U, which are important in nuclear industries. [11] Therefore, for modifying its mechanical and ion-exchange properties, the new organic-inorganic composite, cerium molybdophosphate-polyacrylonitrile, (CMP-PAN) was synthesized and introduced in this pa-per.…”