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Multicomponent Cation Adsorption During Convective‐Dispersive Flow Through Soils: Experimental Study
Author(s) -
Lai SunHo,
Jurinak J. J.,
Wagenet R. J.
Publication year - 1978
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/sssaj1978.03615995004200020005x
Subject(s) - loam , adsorption , chemistry , effluent , volume (thermodynamics) , pulse (music) , aqueous solution , soil water , analytical chemistry (journal) , chromatography , soil science , thermodynamics , geology , environmental engineering , environmental science , optics , physics , organic chemistry , detector
The adsorption of Na + , Mg 2+ , and Ca 2+ from aqueous solutions flowing through soil was examined under different total cation concentrations and input pulse volumes. The pulses of Na + and Mg 2+ , which were introduced into a Ca 2+ ‐saturated Yolo loam soil column, appeared separately in the effluent. The degree of separation decreased with total concentration, but was not affected significantly by the pulse volume. At constant total concentration, the initial appearance of the Na + pulse in the effluent was not affected by input volume; the appearance of the Mg 2+ pulse was delayed with increasing pulse volume. The experimental results were compared to theoretical calculations based on a single component linear equilibrium model. At a low loading (a small amount of adsorbate with respect to a large amount of adsorbent), the agreement of the theoretical model and the experimental results was satisfactory. However, when the loading was increased, the discrepancy between the calculated values and the experimental results increased.