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The effect of saline concentration on the viscous properties of lignite water suspensions
Author(s) -
Darby Ron,
Mallett Mark W.
Publication year - 1981
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.5450590312
Subject(s) - suspension (topology) , saline , rheology , viscosity , chemistry , volume (thermodynamics) , adsorption , saline water , chromatography , chemical engineering , materials science , salinity , thermodynamics , organic chemistry , composite material , geology , oceanography , engineering , endocrinology , medicine , physics , mathematics , homotopy , pure mathematics
The influence of saline in small concentrations on the rheological behavior of concentrated suspensions of lignite in water was determined. It was found that for solids volume fractions below about 40%, the suspension viscosity exhibited a slight minimum at a saline concentration of about 1 mmol/L whereas the viscosity exhibited a maximum at this same saline concentration for solids volume fractions above about 40%. An explanation is offered in terms of the electrostatic effects of adsorbed ions and crowding effects.