Abstract:Tangential streaming potential technique is an attractive way to characterize the electrokinetic properties of various kinds of materials such as films or flat membranes with a dense or a porous structure. However, the interpretation of data in terms of zeta potential is usually carried out by doing the implicit assumption of nonconducting substrates. In the present paper, we investigate the electrokinetic properties of a commercial ultrafiltration membrane, the porous structure of which affects the streaming … Show more
“…3. As can be seen, the AFC 30 membrane is found to be negatively charged, which is in agreement with reported studies dealing with polyamide membranes [24,[64][65][66]. The effective volume charge density shows an increase (in absolute value) with increasing salt concentration (diluted side concentration).…”
Section: Evaluation Of the Sede Model Performances-comparison With Thsupporting
“…3. As can be seen, the AFC 30 membrane is found to be negatively charged, which is in agreement with reported studies dealing with polyamide membranes [24,[64][65][66]. The effective volume charge density shows an increase (in absolute value) with increasing salt concentration (diluted side concentration).…”
Section: Evaluation Of the Sede Model Performances-comparison With Thsupporting
“…A self-made setup which is similar to that described in Refs. [14,15] was employed to determine streaming potentials. The membrane samples were placed above and below a PTFE spacer (0.2 mm in thickness) with the membrane skin-layer facing the flow channel (170 × 10 mm).…”
Section: The Theory and Methods Of Electrokinetic Characterization Of mentioning
“…The tangential streaming potential cell and the exact measuring procedure can be found elsewhere [43,44]. In short, this apparatus measures the electrical potential difference (i.e., the streaming potential) generated by the imposed movement of an electrolyte solution through a slit channel formed by clamping together two identical flat membranes separated by a spacer.…”
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