ANALYSIS OF THE KINETIC CHARACTERISTICS OF ELECTROCHEMICAL NANOFILTRATION SEPARATION OF ZINC-CONTAINING SOLUTIONS ON THE BASIS OF THE ELECTROCONVECTIVE THEORY

A method is proposed for optimizing the specifi c fl ow of a substance at the outlet of fi ltration membranes with limitations on current, electroosmotic permeability, retention coeffi cient, and current effi ciency at a constant transmembrane pressure. Based on analytical and empirical studies, engineering formulas have been obtained making it possible to calculate the specifi c output fl ow for fl at-chamber devices with OFAM-K and OPMN-P nanofi ltration membranes, which determines the productivity of the electrochemical nanofi ltration process of separation of zinc-containing solutions in wide ranges of changes in the electric current density, electrical permeability, and membrane retention coeffi cient, as well as in transmembrane pressure. The adequacy of the proposed method was verifi ed by comparing calculated and experimental data on the specifi c fl ow of matter at the output of the OFAM-K anode membrane and the OPMN-P cathode one. The verifi cation has shown the eff ectiveness of the obtained engineering formulas in a wide range of changes in the current density on the membranes
A method is proposed for optimizing the specifi c fl ow of a substance at the outlet of fi ltration membranes with limitations on current, electroosmotic permeability, retention coeffi cient, and current effi ciency at a constant transmembrane pressure. Based on analytical and empirical studies, engineering formulas have been obtained making it possible to calculate the specifi c output fl ow for fl at-chamber devices with OFAM-K and OPMN-P nanofi ltration membranes, which determines the productivity of the electrochemical nanofi ltration process of separation of zinc-containing solutions in wide ranges of changes in the electric current density, electrical permeability, and membrane retention coeffi cient, as well as in transmembrane pressure. The adequacy of the proposed method was verifi ed by comparing calculated and experimental data on the specifi c fl ow of matter at the output of the OFAM-K anode membrane and the OPMN-P cathode one. The verifi cation has shown the eff ectiveness of the obtained engineering formulas in a wide range of changes in the current density on the membranes
Author:  D. N. Konovalov, S. I. Lazarev, and K. K. Polyanskii
Keywords:  specifi c output fl ow, electrochemical nanofi ltration process, membrane, retention coeffi cient, zinc, electroconvection
Page:  424