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Single particle studies of binary and ternary cation exchange kinetics
Author(s) -
Bajpai R. K.,
Gupta A. K.,
Rao M. Gopala
Publication year - 1974
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.690200521
Subject(s) - ternary operation , nernst equation , diffusion , ion exchange , binary number , particle (ecology) , kinetics , chemistry , thermodynamics , particle size , tracer , ion , physics , nuclear physics , mathematics , electrode , computer science , organic chemistry , arithmetic , quantum mechanics , oceanography , programming language , geology
Extensive ternary ion‐exchange rate data for cases where particle‐diffusion is important are presented. Experimental rate data, using a single‐particle radioactive‐tracer technique, were obtained for the following systems in Dowex 50W‐X8 resin: Mn‐Cs‐Na, Ba‐Mn‐Na, and Sr‐Mn‐Cs. Nernst‐Planck equations have been used to describe the ternary ion‐exchange kinetics. The Nernst‐Planck model, when used for the correlation of binary and various types of ternary exchange data obtained under unfavorable equilibrium conditions, usually cannot afford to disregard liquid‐film resistance. The model incorporating the film effects correlated satisfactorily most of the experimental data, and even in cases where the correlation was not good, it interpreted adequately the trend of the results.