Hydrodynamic and electro-osmotic transport of aqueous solutions of Pb and Cd nitrate through cellulose acetate membrane
Manoj Kumar, Bali Ram
Hydrodynamic and electro-osmotic permeability of water and aqueous solutions of Pb(NO3)2 and Cd(NO3)2.4H2O in the concentration (C) range of 10-4 M-10-3 M have been measured across cellulose acetate membrane. The data obtained have been used to determine the transport equation using the theory of non-equilibrium thermodynamics. The conductance of membrane-equilibrated with water and aqueous solutions has been measured. Besides, streaming current generated during the transport of various permeants was measured and its dependence on pressure investigated. Phenomenological coefficients have been determined using the transport equation and Saxen’s relationship was verified. The zeta potentials have been evaluated using electro-osmotic permeability and membrane-permeant conductance data. It has been observed that hydrodynamic and electro-osmotic permeabilities depend linearly on applied pressure difference and potential difference respectively. Streaming current was also found to depend linearly on applied pressure difference across the membrane.
Manoj Kumar, Bali Ram. Hydrodynamic and electro-osmotic transport of aqueous solutions of Pb and Cd nitrate through cellulose acetate membrane. International Journal of Multidisciplinary Research and Development, Volume 2, Issue 11, 2015, Pages 286-292