Uranium precipitation without reagents

We investigated the theories of uranium precipitation without reagents, developed the constructions of electrode apparatus for electrohydrolysis and electrodialysis of UO₂(NO₃) ₂, (NH₄)₄[UO₂(CO₃)₃] solution. The investigations of the electrohydrolysis of (NH₄)₄[UO₂ (CO₃)₃] solution showed that alternating electric current passing through the solution 2-6 times intensifies the process in electrode apparatus, raises up to 99.95% the degree of uranium precipitation in the form xUO₂CO₃ y(NH₄)₂U₄O₁₃ zUO₂(OH)₂ nH₂O, where x = 0.1-0.2; y = 0.6-5.0; z = 0.4-4.0; n = 2-20. Especially effective is making electrohydrolysis in electrode apparatus with electric diaphragm discharge. In the discharge zone under the temperatures (3-5)·10 ³ K the following procedures take place: solution evaporation, thermal decomposition of water and molecules of the dissolved substance with getting precipitations of hydrated uranium oxides (UO₂(OH)₂ nH₂O, UO₂ nH₂O) and other metals. It has been established that at UO ₂(NO₃)₂ electrolysis there is a transfer of nitrate-ions through anionite membrane with the formation of sulphuric acid in the anode chamber, and in the cathode chamber of anion-deficient on nitrate-ion solution