Solubility and Solid-Phase Composition in Na2CO3-Na2SO4 Solutions at Boiling Temperature: A Modeling Approach
Journal article, 2008

Scaling caused by Na2CO3-Na2SO4 double salts constitutes a severe problem in black liquor evaporators. The ability to predict the solubility and solid-phase composition of these species would be conclusive in minimizing the adverse effects of scaling. Experimental solubility data for (sodium sulfate) dicarbonate, a carbonate-rich double salt identified in Na2CO3-Na2SO4 precipitates, were generated and used for fitting an empirical solubility model. A thermodynamically based approach for predicting the solubility and solidphase composition, previously used for burkeite precipitates, was applied to solid solutions of dicarbonate.

Solubility

double salt

scaling

(sodium sulfate) dicarbonate

sodium carbonate

solid solution

sodium sulfate

Author

Marta Anna Bialik

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

Hans Theliander

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

Maria Sedin

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

Christopher L Verrill

Nikolai DeMartini

Institute of Paper Science and Technology

Industrial & Engineering Chemistry Research

0888-5885 (ISSN) 1520-5045 (eISSN)

Vol. 47 9 3233-3238

Subject Categories

Chemical Engineering

Chemical Sciences

DOI

10.1021/ie071436r

More information

Created

10/6/2017