Adsorption of palmitic acid on calcite

Details Adsorption of palmitic acid on calcite Adsorption of palmitic acid on calcite

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44..629l&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Issue 5, pp.629-634

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Scientific paper

The adsorption of palmitic acid by calcite was determined as a function of palmitic acid concentration and salinity. Adsorption isotherms were generally of the S-type, indicating probable hydrophobic interaction of adsorbed species. The effect of increased salinity was to increase adsorption from 0-25 ppt, then to decrease adsorption from 25-35 parts per thousand. The adsorption increase results from decreased solubility, whereas the adsorption decrease may be related to micelle formation. Dissolved Mg 2+ was found to strongly inhibit fatty acid adsorption. Desorption of surface-bound phosphate was associated with palmitic acid adsorption. The relationship between adsorbed Mg 2+ , phosphate and palmitic acid suggests investigation of adsorption behavior of natural phospholipid compounds.

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