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Anomalies in Techniques for Preparing H‐Bentonites
Author(s) -
Aldrich D. G.,
Buchanan J. R.
Publication year - 1958
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/sssaj1958.03615995002200040003x
Subject(s) - bentonite , hydrochloric acid , titration , chemistry , suspension (topology) , electrolyte , chloride , sodium , chromatography , nuclear chemistry , inorganic chemistry , geology , organic chemistry , mathematics , paleontology , electrode , homotopy , pure mathematics
Various procedures for the preparation of H‐bentonites to be used in physical‐chemical studies of clay systems have been examined. Their effects upon the exchangeable H and Al content of these bentonites have been evaluated by titration curves and chemical analyses. A procedure for reducing the amount of exchangeable Al in such preparations is proposed. This procedure involves pretreatment of the bentonite suspension with hydrochloric acid and sodium chloride solutions followed by removal of excess electrolyte and passage of the suspension through an H‐resin column. The exchangeable H and Al status of bentonites thus prepared is discussed.