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Updated: Aug 7, 2026

Calcium Carbonate Formation in the Presence of Biopolymeric Additives
Published on: May 14, 2019
Interactions in Calcium Oxalate Hydrate/Surfactant Systems
Sikiric1, Filipovic-Vincekovic, Babic-Ivanci&cacute
1Faculty of Agriculture, Ruder Boskovic Institute, Zagreb, 10001, Croatia
Abstract:
Phase transformation of calcium oxalate dihydrate (COD) into the thermodynamically stable monohydrate (COM) in anionic (sodium dodecyl sulfate (SDS)) and cationic (dodecylammonium chloride) surfactant solutions has been studied. Both surfactants inhibit, but do not stop transformation from COD to COM due to their preferential adsorption at different crystal faces. SDS acts as a stronger transformation inhibitor. The general shape of adsorption isotherms of both surfactants at the solid/liquid interface is of two-plateau-type, but differences in the adsorption behavior exist. They originate from different ionic and molecular structures of crystal surfaces and interactions between surfactant headgroups and solid surface. Copyright 1999 Academic Press.
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