¹⁵²Eu and ²⁴¹Am recovery from HNO₃ by conventional and micelle mediated extraction are studied. It is stated that radionuclides distribution ratios D (K_D) in micelle mediated extraction are significantly higher than those of conventional extraction, with ²⁴¹Am is slightly less extracted than ¹⁵²Eu. Distribution ratios dependence on medium acidity is similar for both processes, with extraction maximum at C (HNO₃) = 0.2–1 mol L⁻¹. Microscopic research and dynamic light scattering prove micellar nature of calixarene solutions. Nano-scale of particles, which accumulate radionuclides, is confirmed by ultramicrofiltration. This method is also applied for studies of radionuclides re-extraction and electrochemical deposition.