Hitachi, Ltd.

Hitachi-Ge Nuclear Energy, Ltd.

Yuko Kani

Takahiro Tadokoro

Takashi Asano

A method for producing a radionuclide is provided that produces molybdenum trioxide 99 (Mo-99.O) and technetium oxide 99m (Tc-99m.O) by emitting an electron beam accelerated by an electron linear accelerator to a molybdenum trioxide 100 (Mo-100.O) powder sample, and which separates and purifies technetium oxide 99m from both the molybdenum trioxide 99 and the technetium oxide 99m by using a radionuclide separation/purification unit. The method for producing a radionuclide supplies temperature-regulated gas to the molybdenum trioxide 100 powder sample during an irradiation period during which the electron beam is emitted to the molybdenum trioxide 100 powder sample.

Method and apparatus for producing radionuclide

Granular crystalline silicotitanate (CST) is supplied from an adsorbent raw material supply apparatus into a caustic treatment apparatus. A sodium hydroxide solution of 1 Mol/L in a caustic agent supply apparatus is supplied into the caustic treatment apparatus with the granular CST supplied. After a predetermined quantity of the sodium hydroxide solution is supplied to the caustic treatment apparatus, the supply of the sodium hydroxide solution to the caustic treatment apparatus is stopped. The granular CST is left to stand for 0.5 hour in the state that it is immersed in the sodium hydroxide solution in the caustic treatment apparatus and is subjected to the caustic treatment. After that, the granular CST subjected to the caustic treatment is cleaned by cleaning water in a cleaning water supply apparatus. The respective adsorptive performances of cesium and strontium of the granular CST subjected to the caustic treatment are improved more.

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Tokyo, Japan

Yuko Kani