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A Discussion of the Surface Complexation Modeling in the Paper by Sarkar et al. (1999)
Author(s) -
Lützenkirchen Johannes
Publication year - 2001
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/sssaj2001.6541348x
Subject(s) - sorbent , gibbsite , surface (topology) , base (topology) , surface charge , chemistry , layer (electronics) , materials science , analytical chemistry (journal) , mineralogy , aluminium , chemical engineering , inorganic chemistry , adsorption , chromatography , composite material , mathematics , geometry , engineering , mathematical analysis
The application of the triple layer surface complexation model by Sarkar et al. is discussed, and it is shown that the authors obtain for gibbsite an acid/base model which is not in agreement with typical experimental data for that sorbent. Furthermore, it is concluded that experimental surface charge must be obtained data for the sorbent sample, because there is no unique surface charge for gibbsite based on the overall properties such as sorbent mass or specific surface area.