The Scientific World Journal / 2013 / Article / Tab 5

Research Article

Metals Ions Removal by Polymer Membranes of Different Porosity

Table 5

Basic properties of investigated adsorbents before and after filtration with 15 mg/dm3 iron solution (mmol/g).

MembranepKa
<33–55–77–99–11>11Basic groupsTotal content of surface oxides
ABABABABABABABAB

PES-18 PVP-10.270.270.300.320.991.350.380.331.942.278.986.88
PES-18 PVP-20.130.260.100.300.050.621.150.450.902.163.046.41
PES-18 PVP-30.260.230.240.260.180.871.180.330.371.882.045.195.64
PES-18 PVP-40.260.250.310.300.121.121.400.370.362.062.436.406.93

A: before filtration, B: after filtration.

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