NEW COMPOSITE MATERIALS FOR DECREASING OF RADIOACTIVE MOLECULAR IODINE IN THE WATER COOLANT ON THE WORKING AND NEW DEVELOPED NPPs. Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences Moscow, Russia Prof. Sergey A. Kulyukhin Dr. Lubov' V. Mizina Eng. Anna A. Tishina

3rd INCC, September 18-23, 2011, Palermo, Sicily, Italy 2 I -, IO 3 -, I 2, CH 3 I Anion- and cation- ion-exchange resins KU-2 and AV-18

3rd INCC, September 18-23, 2011, Palermo, Sicily, Italy 3 The absorption of I 2 and CH 3 I on anion-exchange resin AV-18 from the water coolant of WWER-type NPPs * * The water coolant of the WWER-type NPPs: [NaCl] = 1.17 mg/dm 3 ; [NH 4 Cl] = mg/dm 3 ; [H 3 BO 3 ] = 5 g/dm 3 ; pH

3rd INCC, September 18-23, 2011, Palermo, Sicily, Italy 4 NN Time of contact between solid and liquid phases K d, cm 3 /g I2I2 CH 3 I 115 min  3,012.9  0,6 260 min  4,530.2  1, min  6,141.9  1,7 424 h>  3,4 Distribution coefficients K d for I 2 and CH 3 I on anion-exchange resin AV-18 from the water coolant of WWER-type NPPs * The water coolant of the WWER-type NPPs: [NaCl] = 1.17 mg/dm 3 ; [NH 4 Cl] = mg/dm 3 ; [H 3 BO 3 ] = 5 g/dm 3 ; pH (V/m =100; [CH I] = M; [I 2 ] = 910 -4 M)

3rd INCC, September 18-23, 2011, Palermo, Sicily, Italy 5 Aim of the work is to develop a new effective material to absorb molecular and organic iodine from water solutions It is desirable to employ materials that are used on working NPPs to coolant decontamination Ion-exchange resin - KU-2

Material Quantity of d-elements on cation- exchange resin KU-2 Colour mg/g% wt. IPCE-C brown with metal gloss IPCE-C brown with metal gloss IPCE-CS grey Some characteristics of the new materials based on cation-exchange resin KU-2 IPCE-C1 - about 8.0 wt.% of Cu IPCE-C2 - about 5.5 wt.% of Cu IPCE-CS - the total content of metals about 10.0 wt.% at molar relation Cu : Ag = 4 : 1

3rd INCC, September 18-23, 2011, Palermo, Sicily, Italy 7 NNMaterial K d, cm 3 /g 131 I -131 IO 3 - I2I2 CH I 1KU  0.4 2IPCE-C   1.6(2.1  0.9)10³8.5  1.3 3IPCE-C   2.7(2.3  0.8)10³8.5  1.3 4IPCE-CS   1.9(2.3  1.0)10³10.6  1.4 Distribution coefficients K d for 131 I -, 131 IO 3 -, CH I and I 2 on the modified resin KU-2 from a water coolant of the WWER-type NPPs * * The water coolant of the WWER-type NPPs: [NaCl] = 1.17 mg/dm 3 ; [NH 4 Cl] = mg/dm 3 ; [H 3 BO 3 ] = 5 g/dm 3 ; pH (V/m =100; [K 131 IO 3 ] = M; [K 131 I] = M; [CH I] = M; [I 2 ] = 910 -4 M Time of contact between liquid phase and material is 120 min)

Dependence of I 2 sorption on the time of contact between solid and liquid phases

3rd INCC, September 18-23, 2011, Palermo, Sicily, Italy 9 THANK YOU !