THERMODYNAMIC MODEL OF REDISSOLUTION OF CALCIUM SULFONATE PRECIPITATES IN NaCl SOLUTIONS.

Ponisseril Somasundaran*, Kavssery P. Ananthapadmanabhan, Mehmet S. Celik, Emil D. Manev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Precipitation phenomenon in the sodium dodecylsulfonate system has been investigated in this study at various levels of CaCl//2 in a wide range of NaCl concentrations. While precipitation is found to be caused by the formation of calcium disulfonate, redissolution of the precipitate at high sulfonate levels is found to occur only when micelles are formed. Correlation of the effect of ionic strength on the redissolution with that of it on micellization supports the proposed mechanism of micellar redissolution. A thermodynamic model capable of predicting the nature and concentrations of various species in solutions has been developed. The model was tested against different sets of experimental data and was found to predict the system behavior satisfactorily.

Original languageEnglish
Pages (from-to)667-676
Number of pages10
JournalSociety of Petroleum Engineers of AIME Journal
Volume24
Issue number6
DOIs
Publication statusPublished - 1984
Externally publishedYes

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