Determination of the secondary phases at the acidic LNW disposal

What is it about?

We analyzed the alteration of the sand rocks of the deep liquid nuclear wastes disposal. Some of the mineral phases have no changings while Fe-containing minerals and clay minerals have been altered and have formed secondary phases. The behavior of some radionuclides including plutonium is sensitive to the presence of Fe oxides - oxyhydroxides.

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Why is it important?

The characterization of solid phases of the disposal of liquid nuclear wastes is very important for understanding the immobilization/spreading processes of long-living alpha-emitting actinides in the reservoir bed of the disposal.