Purpose of the development: For radiowaste partition.

Recommended application field: High levelwastes partitioning technology. Radiowastes management.

Advantages over analogues: The nano-sized calix[4]arene phosphine oxides, developed jointly by the Institute of Organic Chemistry NASU (Kyiv) and Khlopin Radium Institute (St. Petersburg) extract simultancously actinides, Lanthanides, technetium and palladium from real HLW hundred times more efficient then the industrial exstractants. In three contacts ~99,9% of gross a-activity, more than 98% of Tc and Pd were recovered from the realHLW on the "MAYAK" plant (Chelyabinsk).

The development stage readiness: Tested experimental exploitation order

Description of the development:
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Long-lived radionuclides, especially actinides, are the most hazardous components of the high level wastes (HLW) of nuclear power stations and "dirty" materials of the Chernobyl zone. Their separation from the total waste mass and disposal or reprocessing (transmulation) should enable significantly to raise the ecological salety and efficiency of nuclear fuel cycle. The HLW partitioning problem can be solved by the extraction technology with the use of new extractants recovering TRU, technetium and platinides. The widely used extractants like trlbutylphosphate, 2-cthylhexyl phosporus acid, trialkylphosphine oxides, carbamoylphosphine oxides possess low efficiency and insuflicient selectivity in separation of hazardous radionuclides from acidic high-level waste. We propose a new class of perspective extractants on the of nano-sized calixarenes functionalized with phospine oxide groups. In such compounds the binding groups may be best located around a metal cation, increasing the extraction efficiency and selectivity to a great extent.

Possibility of transfer abroad:
Licence's sale
Technological document's sale
Combinated reduction to industrial level
Creation of joint enterprise

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua