- Tytuł:
- Study on preferential selectivity of nuclear grade resin Indion-223 towards some bivalent ions
- Autorzy:
-
Singare, P. U.
Mohammed, A. L. K.
Dixit, N. N. - Powiązania:
- https://bibliotekanauki.pl/articles/412085.pdf
- Data publikacji:
- 2014
- Wydawca:
- Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
- Tematy:
-
bivalent exchange reactions
nuclear grade resins
cation exchange
reaction thermodynamics
enthalpy change
ionic selectivity
equilibrium constant
Indion-223 - Opis:
- In the present paper attempts are made to understand the selectivity of nuclear grade cation exchange resin Indion-223 in H+ form towards Ca2+ and Mg2+ bivalent ions in the solution based on thermodynamic concept. It was observed that with rise in temperature the equilibrium constant K values for H+/Ca2+ uni-bivalet ion exchange reactions increases from 0.000397 to 0.000639. Similarly for H+/Mg2+ uni-bivalet ion exchange reactions the equilibrium constant K values increases from 0.000177 to 0.000333. The increase in equilibrium constant values with rise in temperature indicate endothermic ion exchange reactions having the enthalpy change values of 38.92 and 51.46 kJ/ mol respectively. The difference in K values and enthalpy values were used to predict the selectivity behaviour of the resin towards the Ca2+ and Mg2+ bivalent ions in the solution. The thermodynamic concept of the present study can be applied to understand the selectivity behaviour of different nuclear as well as non-nuclear grade resins towards wide range of ionic species present in the exchanging liquid medium.
- Źródło:
-
International Letters of Chemistry, Physics and Astronomy; 2014, 15; 11-21
2299-3843 - Pojawia się w:
- International Letters of Chemistry, Physics and Astronomy
- Dostawca treści:
- Biblioteka Nauki
Artykuł