The Gibbs–Donnan effect (also known as the Donnan's effect, Donnan law, Donnan equilibrium, or Gibbs–Donnan equilibrium) is a name for the behaviour of charged particles near a semi-permeable membrane that sometimes fail to distribute …

Oct 6, 2022 · Donnan electrical potential is widely adopted to describe ion distribution between two solutions separated by a permeable membrane with implications for many chemical and biological systems.

Oct 6, 2022 · When a charged membrane is equilibrated with an electrolyte, an unequal distribution of ions arises between phases, generating the so-called Donnan electrical potential at the solution/membrane interface. The Donnan potential results in the partial exclusion of co-ion, providing the basis of permselectivity.

The Electric potential that arises between two solutions is called Donnan potential. Donnan equilibrium is prominent in the triphasic model for articular cartilage proposed by Mow and Ratcliffe, as well as in electrochemical fuel cells and dialysis.

The Donnan Equilibrium refers to a situation where the presence of a large membrane-impermeable molecule with counterions creates a salt concentration gradient across a membrane that is permeable to small cations and anions.

Sep 1, 2013 · To describe Donnan equilibrium at the membrane–solution interface, the simplest approach uses the classical Boltzmann equation, based on a mean-field description of ions as ideal point charges, in combination with the assumption of fully overlapped electrical double layers in the membrane pores.

Donnan equilibrium (also called Gibbs-Donnan equilibrium) refers to the imbalance of ion species across two solutions separated by an interface that prevents at least one species to pass through [Donnan, 1924].

The Donnan law defines the volume distribution of ions on either side of a semi­permeable membrane that permits all but one ionic species to diffuse across it.

Our results highlight the dependence of the Donnan potential on external salt concentration and counter-ion valence, and show a reasonable agreement with current theore-tical models of IEMs,...

We present here a model for the potential distribution across a charged membrane, in which the membrane fixed charges are uniformly distributed through a layer of finite thickness (which is permeable to electrolyte ions) at the membrane surface.