Cadmium (II) and lead (II) transport in a polymer inclusion membrane using tributyl phosphate as mobile carrier and CuFeO2 as a polarized photo electrode

Efficient Facilitated Transport of Lead and Cadmium Across a Plasticized Triacetate Membrane Mediated by D2EHPA and TOPO

“…Transport studies through cellulose triacetate membranes as polymeric matrix with showing high flux and good stability have been recently reported [22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Synthesis of modified polymer inclusion membranes for photo-electrodeposition of cadmium using polarized electrodes

“…In other words, the carrier is in disordered state in the membrane whose amorphous nature leads to consider transport by diffusion. On the other hand the amount of carrier in PIM remains nearly constant, consequently the transfer of Cd 2+ ions is more effective and the new membranes are more stable [32].…”

“…The electro deposition speeds up considerably the diffusion process as evidenced from the ions transference fluxes [32]. Indeed, the electro-deposition catalyzes the diffusion process and the equilibrium (reaction (4)) strongly yields to the right hand i.e.…”

“…Transport studies through cellulose triacetate membranes as polymeric matrix with high flux and good stability have been reported recently [18][19][20][21][22][23][24][25][26][27][28][29][30][31]. The permeation of Pb 2+ and Cd 2+ through PIMs in presence of CuFeO 2 as polarized electrode has been successfully applied by some of us [32]. Such study has been previously done using commercial cations exchange membrane (noticed CRA) and CdS as photo electrode for the separation and recovery of some metal ions [33].…”

Polymer Inclusion Membranes (PIM) for the Recovery of Potassium in the Presence of Competitive Cations

“…Plasticizers (e.g., 2-nitrophenyl octyl ether, 2-NPOE) are generally used to lubricate the segment motions of polymers (and therefore increase the ion flux across the membrane) and to provide flexibility. Carriers are found in different types: basic (e.g., quaternary amines [21]), acidic and chelating (e.g., sulfonic acids [22]), neutral (e.g., phosphoric acid esters [23]), macrocyclic and macromolecular (e.g., imidazole azothiacrown ethers [24]). For the transport of alkali metals (e.g., K + ), macrocyclic and macromolecular crown ethers are commonly used as carriers [25].…”