Measuring particle surface charge and particle interactions in process liquors

Summary

This 3 year project used the DT1200 instrument to measure zeta potential for solids in caustic solutions up to 10m NaOH.

It showed that rheology is capable of reflecting changes in zeta potential of dispersions in concentrated caustic liquors, and that colour of a red mud slurry can be used to determine its relative degree of flocculation, among numerous other results.

Keywords: Bayer liquor, red muds, zeta potential, liquor rheology, electrical double layer