Thermal Degradation Studies of Some Strongly Acidic Cation Exchange Resins

Abstract

The thermal degradation of some sulfonic cationites namely Amberlite IR-120, Indion-223 and Indion-225 was investigated using instrumental techniques like thermal analysis (TG) and Scanning Electron Microscopy (SEM). Fourier Transform Infrared Spectroscopy (FTIR) was used to characterize the resins degradation steps. The sulfonic cationites undergo degradation through dehydration, followed by decomposition of sulfonic acid functional groups liberating SO 2 . The thermogravimetric analysis of above cationites at higher temperature up to 520˚C, show mass loss of 61.61% and 25.43% respectively for Indion-223 and Indion-225, while Amberlite IR-120 cationite get burned off completely.

Study on Halide Ions Selectivity of Nuclear Grade Anion Exchange Resin Auchlite ARA-9366

“…The organic ion exchange resins are very effective at transferring the radioactive content of a large volume of liquid into a small volume of solid and have proved to be reliable and effective for the control of both the chemistry and radiochemistry of water coolant systems at nuclear power plants and also for processing some liquid radioactive waste. In recent years tremendous work on development of new organic based ion exchangers [7][8][9][10][11][12][13][14][15]. By taking advantage of the fact that, under certain conditions, ion exchange media has a greater affinity for certain ionic species than for others, a separation of these species can be made [16].…”

Ion-Exchange Reaction Thermodynamics to Study the Selectivity Behaviour of Nuclear and Non-Nuclear Grade Anion Exchange Resins

“…When used in nuclear industries these organic ion exchange resins very effectively transfer the radioactive content of a large volume of liquid into a small volume of solid and hence are applied for cleaning and decontamination processes and also for removal of radionuclide [2- 6]. As a result these organic ion exchange resins have proved to be reliable and effective for the control of both the chemistry and radiochemistry of water coolant systems at nuclear power plants and also for processing some liquid radioactive waste [7]. In number of cases, for specific physical and chemical reasons, organic resins cannot be replaced by commercially available inorganic ion exchangers and organic ion exchange resins continued to be used globally [7].…”

“…As a result these organic ion exchange resins have proved to be reliable and effective for the control of both the chemistry and radiochemistry of water coolant systems at nuclear power plants and also for processing some liquid radioactive waste [7]. In number of cases, for specific physical and chemical reasons, organic resins cannot be replaced by commercially available inorganic ion exchangers and organic ion exchange resins continued to be used globally [7].…”

“…By taking advantage of the fact that, under certain conditions, ion exchange media has a greater affinity for certain ionic species than for others, a separation of these species can be made [7,14]. However presence of chemically similar ionic species in the liquid waste will create difficulty in selection of suitable ion exchange media.…”

Application of Nondestructive Radio Tracer Technique in Performance Evaluation of Anion Exchange Resins Duolite ARA-9366 and Duolite A-171

“…The high capacity, wide applicability, wide versatility and low cost relative of synthetic organic ion exchange resins make them superior over some synthetic inorganic media. In spite of extensive work done in development of new organic ion exchange resins so as to match the requirements in industries, different aspects of ion exchange technologies are still studied continuously so as to improve the performance of those resins in various technical applications [6][7][8][9][10][11]. When designing an ion exchange processing system it is desirable to have an appreciation of the rate at which the reaction will occur.…”