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Sulfonate precipitation-redissolution-reprecipitation in inorganic electrolytes

Conference · · AIChE Symp. Ser.; (United States)
OSTI ID:6654037
Interacton of inorganics with surfactants can lead to precipitation and consequently to loss of surfactants. Multivalent ions such as Ca/sup + +/ can cause precipitation followed by redissolution at higher surfactant concentration. Redissolution can also be achieved by adding monovalent inorganics such as NaCl. Various possible mechanisms of this phenomenon are discussed on the basis of the data for turbidity, critical micelle concentration, and sulfonate and calcium concentrations. While precipitation is found to be mostly due to the formation of simple calcium sulfonates, redissolution is observed to occur only when micelles are formed. 11 figures, 1 table.
Research Organization:
Columbia Univ., New York, NY
OSTI ID:
6654037
Report Number(s):
CONF-810417-
Conference Information:
Journal Name: AIChE Symp. Ser.; (United States) Journal Volume: 78:212
Country of Publication:
United States
Language:
English

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