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Soil Adsorption of Linear Alkylate Sulfonate
Author(s) -
Murti G. S. R. Krishna,
Volk V. V.,
Jackson M. L.
Publication year - 1966
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/sssaj1966.03615995003000060012x
Subject(s) - adsorption , chemistry , organic matter , soil water , cation exchange capacity , montmorillonite , sulfonate , environmental chemistry , inorganic chemistry , geology , soil science , organic chemistry , sodium
Linear alkylate sulfonate (LAS) adsorption was studied in relation to the pH, cation‐exchange capacity, clay, organic matter, extractable Fe and Al, exchangeable Al, and Fe 2 O 3 contents of several soils. The LAS adsorption correlated highly significantly with the organic matter content ( r = 0.81) and the P fixing capacity ( r = 0.75) of the soils. With the removal of sesquioxides as the final pretreatment on chloritic, kaolinitic and allophanic soils the LAS adsorption decreased from values of 19 to 48 µ g/g on the untreated soil to a value of zero. When treated with a terminal H 2 O 2 treatment, the adsorption values on the same soils ranged from 17 to 65 µ g/g. The increase apparently occurred as a result of Fe and Al released from organic chelates. The increase in the LAS adsorption from 7 to 27 µ g/g on the untreated soil to 8 to 50 µ g/g after the removal of both the organic matter and sesquioxides in a number of montmorillonitic Wisconsin soils indicates the importance of montmorillonite in LAS adsorption.