Surface charge of alkali halide particles as determined by laser-Doppler electrophoresis

Journal Article · Fri May 01 04:00:00 EDT 1992 · Langmuir; (United States)

DOI:https://doi.org/10.1021/la00041a036· OSTI ID:5525643

Miller, J D; Yalamanchili, M R ^[1]; Kellar, J J ^[2]

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1. Univ. of Utah, Salt Lake City, UT (United States)
2. South Dakota School of Mines and Technology, Rapid City, SD (United States)

Nonequilibrium electrophoretic-mobility measurements by laser-Doppler electrophoresis are reported for alkali halide particles. These measurements have been made for the first time and allow for the sign of the surface charge to be predicted for alkali halides in their saturated brines. In general, the results can be explained from the simplified lattice ion hydration theory; however, potassium chloride is, at least, one noteworthy exception. On the basis of this analysis, particle dispersion/aggregation behavior in saturated brines can be explained. Further, the nature of collector (surfactant) adsorption and the flotation behavior of the alkali halide salts from their saturated brines can now be described more accurately. 20 refs., 7 figs., 3 tabs.

• DOE Contract Number: FG02-84ER13181
• OSTI ID: 5525643
• Journal Information: Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 8:5; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADSORPTION
ALKALI METAL COMPOUNDS
DISPERSIONS
DOPPLER EFFECT
ELECTRIC CHARGES
ELECTROMAGNETIC RADIATION
ELECTROPHORESIS
FLOTATION
HALIDES
HALOGEN COMPOUNDS
HYDRATION
LASER RADIATION
RADIATIONS
SEPARATION PROCESSES
SOLVATION
SORPTION
SURFACE PROPERTIES
SURFACTANTS
SUSPENSIONS