Mass transfer in two-phase nondispersing liquid--liquid contactors with a high-density-difference system

Technical Report · Sun Apr 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6318655· OSTI ID:6318655

Brown, Jr., C. H.

Mass transfer rates of an electrolyte through a turbulent aqueous film in an agitated two-phase nondispersing liquid--liquid contactor were measured using an aqueous electrolyte solution as the light phase and mercury as the heavy phase. The mass transfer data were correlated by the equation N/sub Sh/ = (0.029 exp(3.3 x 10/sup -6/N/sub Re//sub M/))N/sub Re//sub W//sup 0/ /sup 81/N/sub Sc//sub W//sup 0/ /sup 52/. The mass transfer rates were measured polarographically via the diffusion-limited, electrically driven reduction of quinone at the mercury surface in the contactor. Variables tested were the agitation rate, agitator diameter, phase volume, cell size, and various physical properties (principally viscosity) of the aqueous phase. The parameters found to be most significant to the mass transfer rate were agitator speed, agitator diameter, and aqueous-phase viscosity. A correlation found in the literature is similar to the correlation developed here, but a new form of the intercept term was developed which correlates mass transfer data over a much wider range of Sherwood numbers than that found in the literature. 33 figures, 7 tables.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6318655
• Report Number(s): ORNL/TM-6670
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
AQUEOUS SOLUTIONS
CORRELATIONS
DATA
DATA FORMS
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
EXTRACTION APPARATUSES
GRAPHS
INFORMATION
MASS TRANSFER
MERCURY
METALS
MIXTURES
NUMERICAL DATA
SOLUTIONS
TABLES