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Liquid‐side ion exchange mass transfer in a ternary system
Author(s) -
Kataoka Takeshi,
Yoshida Hiroyuki,
Uemura Toshifumi
Publication year - 1987
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690330205
Subject(s) - chemistry , mass action law , ion , mass transfer , nernst equation , ternary operation , thermodynamics , analytical chemistry (journal) , thermal diffusivity , ternary numeral system , ionic bonding , equilibrium constant , phase (matter) , chromatography , physics , organic chemistry , electrode , computer science , programming language
Liquid phase mass transfer in a ternary system [ R – A ] + ( B + E ) has been analyzed according to the Nernst‐Planck equation. The equilibrium isotherm was represented by the mass action law. In the case of D A > D B > D E , the resin phase concentration of B ion with time showed a peak. The height of the peak was influenced by the diffusivity ratio, equilibrium constant, and ionic valence. When the modified equilibrium constant K ′ ≧ 100 in the case of A ion and K ′ ≧ 500 in the case of B and E ions, the exchange rates of the ions could be obtained by approximating K ′ = ∞. Experimental data on the change of the resin phase concentration y with time are represented. In a [ R – H + ] + (Na + + Zn 2+ ) system, the change of y Na with time showed a high peak. In a [ R – H + ] + (Na + + Li + ) system, the change of y Li with time showed a small peak. No peaks arose in a [ R – Na + ] + (H + + Li + ) system. The data agreed reasonably well with the values calculated according to the theoretical equations.