A theoretical analysis is presented on the unsteady-state measurement of polymer membrane permeability to dissolved oxygen by means of an analyzer fitted with an oxygen electrode. The main conclusions of this analysis are as follows: (i) the oxygen mass balance must take into account the rate of oxygen consumption at the electrode; (ii) the apparent permeability coefficient Q can be derived by the unsteady-state technique provided that the quasi-steady-state condition is fulfilled for the gas transport in the membrane phase; (iii) the true permeability coefficient P can be evaluated by a set of experiments performed on a single polymeric film using the apparent permeability Q obtained at various rates of stirring. © 1989.

The unsteady-state measurement of polymer membrane permeability to dissolved oxygen / L., Nicodemo; Bellucci, Francesco; R. L., Rose; Carfagna, Cosimo. - In: JOURNAL OF MEMBRANE SCIENCE. - ISSN 0376-7388. - STAMPA. - 43:(1989), pp. 177-186.

The unsteady-state measurement of polymer membrane permeability to dissolved oxygen

BELLUCCI, FRANCESCO;CARFAGNA, COSIMO
1989

Abstract

A theoretical analysis is presented on the unsteady-state measurement of polymer membrane permeability to dissolved oxygen by means of an analyzer fitted with an oxygen electrode. The main conclusions of this analysis are as follows: (i) the oxygen mass balance must take into account the rate of oxygen consumption at the electrode; (ii) the apparent permeability coefficient Q can be derived by the unsteady-state technique provided that the quasi-steady-state condition is fulfilled for the gas transport in the membrane phase; (iii) the true permeability coefficient P can be evaluated by a set of experiments performed on a single polymeric film using the apparent permeability Q obtained at various rates of stirring. © 1989.
1989
The unsteady-state measurement of polymer membrane permeability to dissolved oxygen / L., Nicodemo; Bellucci, Francesco; R. L., Rose; Carfagna, Cosimo. - In: JOURNAL OF MEMBRANE SCIENCE. - ISSN 0376-7388. - STAMPA. - 43:(1989), pp. 177-186.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/526116
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