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Measurement of Adsorption on Solids by the Axial Filter; Linear Vs. Nonlinear Isotherms
Author(s) -
Egozy Yair
Publication year - 1980
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1980.03615995004400030009x
Subject(s) - adsorption , filter (signal processing) , nonlinear system , chemistry , kinetics , thermodynamics , materials science , range (aeronautics) , analytical chemistry (journal) , chromatography , physics , composite material , quantum mechanics , computer science , computer vision
Use of the axial filter for adsorption measurements and evaluation of distribution coefficient is described. Adsorption of Sr(II), Co(II), and Cd(II) on Na montmorillonite from solutions of a wide range of NaCl concentration was measured by the axial filter and compared with results obtained by other experimental methods. Agreement was found for Sr(II) and Cd(II) systems. Disagreements between batch and axial filters results for Co(II) adsorption appear to rise mainly from the slow kinetics of the Co(II) adsorption. Adsorption of Sr(II) on alumina was used to demonstrate the application of the axial filter method for a nonlinear isotherm case. The nonlinear isotherm, obtained by a batch method, was used to explain the behavior of the system in an axial filter experiment. Good agreement was obtained between the predicted and the experimental axial filter results.