Set the initial fluid composition on the Basis pane.

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Presentation transcript:

Set the initial fluid composition on the Basis pane. pH 4 fluid containing heavy metals is in equilibrium with sorbing mineral.

Set up a sliding activity path on the Reactants pane. pH will be adjusted from initial value, 4, to the target value of 12 set here add → Sliding → pH

File → Open → Sorbing surfaces… We load a surface dataset that describes how ions sorb to the mineral in our system File → Open → Sorbing surfaces… Surface complexation dataset for hydrous ferric oxide. You can add any number of sorbing surfaces.

A sliding pH path is a fast way to show how sorption behavior changes with pH