The Scientific World Journal / 2013 / Article / Tab 3

Research Article

Metals Ions Removal by Polymer Membranes of Different Porosity

Table 3

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

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

PES-18 PVP-10.271.490.300.340.991.020.380.411.943.268.986.97
PES-18 PVP-20.131.370.100.310.050.621.050.360.902.733.047.07
PES-18 PVP-30.260.250.240.240.180.871.190.331.881.685.195.65
PES-18 PVP-40.261.250.310.271.121.000.370.362.062.886.405.80

A: before filtration, B: after filtration.

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