Vol. 17, no. 4, 2025
РусскийEnglish
NUCLEAR PHYSICS
Sorption evaluation efficiency of elements from model aqueous solutions and liquid radioactive waste by biomass of the BK-1 syntrophic association
Vitaly N. Yepimakhov, Marina P. Glukhova, Elena B. Pankina, Nataliya V. Chernomorova, Alexander E. Barashkov
Alexandrov Research Institute of Technology, https://niti.ru/
Sosnovy Bor 188540, Leningrad region, Russian Federation
Email: evn@niti.ru, magl27@rambler.ru, panke@sbor.net, chernata0504@mail.ru, alexanderbarashkof@yandex.ru
Alla A. Kornilova, Sergey N. Gaydamaka, Marina A. Gladchenko, Ivan M. Panchishin
Lomonosov MSU, https://msu.ru/
Moscow 119991, Russian Federation
Email: prfnart@mail.ru, s.gaidamaka@gmail.com, gladmarina@yandex.ru, panchishin@physics.msu.ru
Igor V. Kornilov
ASSI Technology Design Center, LLC, https://assi.ru/
Moscow 115172, Russian Federation
Email: gash@mail.ru
Received May 31, 2025, peer-reviewed June 13, 2025, accepted June 16, 2025, published August 14, 2025
Abstract: The article investigates the efficiency of sorption of stable and radioactive elements (cesium, strontium, and cobalt) from aqueous solutions and liquid radioactive waste (LRW) using the syntrophic microbial association BioKompleks-1 (BK-1). It was shown that for stable cobalt, the highest sorption degree (94%) was observed for dehydrated forms of BK-1 at the 22nd hour. For stable strontium, the highest sorption degree (90%) was achieved with dehydrated-2 BK-1 at the 22nd hour. The syntrophic association BK-1 demonstrated relatively low sorption efficiency for cesium (up to 11%), with a tendency toward desorption during prolonged contact. In the case of LRW, the granular form of BK-1 exhibited stable and superior sorption capacity (88%) for the radionuclide strontium-90, with distribution coefficients reaching up to 1348 cm³/g. It was established that BK-1 granules possess high resistance to extreme conditions (temperature of 85 °C, radiation exposure up to 50 kBq/dm³) and maintain sorption activity even in the possible presence of interfering substances at high concentrations (surfactants, nitrates, chlorides, etc.). The distribution coefficients for cobalt-60 and strontium-90 reach values comparable to those of natural sorbents, confirming the potential of biological methods for LRW treatment. Possible mechanisms of radionuclide interaction with the syntrophic association, including the formation of colloidal complexes, are discussed. The results of this study can be applied in the development of biotechnologies for radioactive waste processing.
Keywords: syntrophic association, biosorption, liquid radioactive waste, cobalt-60, strontium-90, cesium-137, distribution coefficient, polyextremophilic microorganisms
UDC 621.039.548
RENSIT, 2025, 17(4):501-510e DOI: 10.17725/j.rensit.2025.17.501
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/689/17(4)501-510e.pdf