RADIOACTIVE WASTES
TREATMENT
Cleaning of radioactive liquids

MODIKS

sorbent for removal of radionuclides of strontium and daughter products of radon decay from liquid solutions

Description
The MODIKS sorbent is an inorganic sorbent based upon manganese dioxide. Is issued in 2 modifications: MODIKS and MODIKS-K (composite version). The composite version of this sorbent includes the substance natural aluminosilicate (opal) as the carrier for the sorption media.

Manganese dioxide captures ions of strontium, plutonium, uranium, and daughter products of decay of radon from water solutions.

Standard characteristics

Modification of sorbent

MODIKS

MODIKS-K

Extracts

Sr, Pu, U, Bi, Po, Pb

Sr, Pu, U, Bi, Po, Pb

​Based on

Manganese Dioxide

Manganese Dioxide

​Inorganic

​Yes

​Yes

​Stable

​Yes

​Yes

Carrier

None

Aluminosilicate

Form

Powder

​Solid granules

​Bulk density, kg/l

0,9

0,6

​Grain size, mm

less 0.3

0.3-1.7

Decontamination factor

200-2000

200-2000

​Operating pH area

1-14

2-14

​Max. operating temperature (°C)

90

90

Service flow rate typically (BV/h)​

​-

​10-20

Technical features

Standard version of MODIKS is most effective for use in a static mode (the introduction of the sorbent into the solution, followed by stirring and separation). The recommended ratio of “sorbent : solution” is 10 kg to 1000 liter. Necessary contact time is 3 hours. Efficiency of extraction is > 95%.

MODIKS K is recommended for use in a dynamic mode at a rate of filtration of the solution of 10 column volumes per hour, and the sorbent layer thickness of 20 cm. The optimum ratio of height to diameter of column in the sorbent bed is 2.5 - 3.5.