Granules of SIV, AM-4, and ETS-4 Titanosilicate Sorbents Based on the Products of Processing Ti-Bearing Raw Materials of the Kola Peninsula and Their Sorption Behavior with Respect to 137Cs and 90Sr Radionuclides

The paper focuses on a transition from studying synthetic analogs of rare titanosilicate minerals (lintisite, ivanyukite, and zorite) in the powdery state to investigating their new granulated forms. Five different methods for granulating titanosilicate samples are tested: fluidized bed and spray dry granulation, spray bed granulation, screw rotor granulation, and manual pressing of paste through a stainless-steel sieve with a 1 mm mesh size. The results of studying sorption of trace amounts of 137Cs and 90Sr radionuclides from model solutions of various compositions onto inorganic sorbents in powdered and granulated forms are presented.