Solvent Extraction Using McCabe-Theil Method

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The diagram below illustrates the graphical representation of the unit for a single Primary Metal and Isotherm using the McCabe-Theil method for a single Solvent Extraction stage. Primary Metal in the example is extracted to the Organic Phase.

For example: The following is used in example 1, based on 100% stage efficiency. Feed Cu(aq) = 1.7 g/L (green vertical line) Feed Cu(o) = 2.96 g/L (green horizontal line) The operating line's slope = feed stream volume ratio, the operation line y-intercept solved by SysCAD (blue line) To read the equilibrium values: Start from feed Cu(aq), 1.7 g/L, move vertically up to the operating line then horizontally to the Equilibrium line (magenta Line). exiting Aqueous stream: Cu(aq) = 0.40 g/L exiting Organic stream: Cu(o) = 5.01 g/L

Note the answers obtained for the exiting aqueous and organic streams are the same as obtained using a simple mass balance approach as described in Model Theory.