Premium
Effect of oil viscosity on the rheology of oil‐in‐water emulsions with added solids
Author(s) -
Yan Yuhua,
Masliyah Jacob H.
Publication year - 1993
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450710605
Subject(s) - rheology , emulsion , viscosity , total dissolved solids , relative viscosity , suspended solids , phase (matter) , materials science , particle size , oil droplet , chemical engineering , chemistry , organic chemistry , composite material , waste management , environmental engineering , wastewater , engineering
This paper reports an experimental study on the effect of oil viscosity on the rheology of oil‐in‐water (o/w) emulsions with added solids. Four oils having a viscosity range of 0.0024 to 306 Pa . s were used. The size ratio of the solids to oil droplets was varied from 2 to 16. The addition of smaller size solids to the emulsions yielded a higher viscosity than that of larger solids at the same solids volume fraction. However, when the solids were sufficiently large such that the emulsions behaved as a continuous phase towards the solids, the viscosity of the emulsion‐solids mixtures tended to be independent of the solids size. The critical size ratio of the solids to oil droplets, above which the emulsions behaved as a continuous phase towards the solids, increased with the oil viscosity. The critical size ratio varied between 3 and 10.