Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1985-11-29
1988-09-13
Fisher, Richard V.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
127 462, 127 54, 127 55, 210639, 210641, 210644, 210645, 210648, 210663, 210683, 210688, 210805, 210806, 210905, 210908, 210912, 435272, 435276, 435280, 435281, B01D 1300, B01D 1502
Patent
active
047707844
ABSTRACT:
A scrubbing process for high feed concentrations of different materials in liquid streams. The process calls for providing a porous membrane in a cell, the membrane having pores of sufficient dimension to allow passage of the different materials therethrough; providing a first stream comprising the different materials in a liquid carrier, providing a second stream comprising an affinity adsorbent in a second liquid carrier, wherein the affinity adsorbent has a dimension larger than that of the pores and has a preferred binding capacity for at least one but not all of the different materials; mixing the first and second streams together to form a composite mixture wherein a portion of the different materials become bound to the affinity adsorbent and a portion of the different materials remain essentially unbound to the affinity adsorbent; and passing the composite mixture against a first side of the membrane while passing a liquid carrier for any of the unbound material against a second side of the membrane to produce a first exit stream containing the affinity adsorbent and a high concentration of at least one of the different materials and a second exit stream containing the liquid carrier and a high concentration of at least one of the other different materials.
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"Copper Selective Ion-Exchange Resin with Improved Iron Rejection" R. R. Grinstead, Journal of Metals, vol. 31, No. 3 (1979) 13-16.
"Membrane-Based Solvent Extraction for Selective Removal and Recovery of Metals" B. M. Kim, Journal of Membrane Science, 21 (1984) 5-19.
Berrett Terry
Davis James C.
McGuiggan Michael F.
Curatolo Joseph G.
Evans Larry W.
Fisher Richard V.
Jones W. Gary
Phillips Sue E.
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