Diffusion And Osmosis In Potassium Nitrate Synthesis By Electrodialysis Metathesis | Zendy

Hanna Jaroszek | Zendy; Piotr Dydo | Zendy

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Diffusion And Osmosis In Potassium Nitrate Synthesis By Electrodialysis Metathesis

Author(s) -

Hanna Jaroszek,

Piotr Dydo

Publication year - 2016

Publication title -

architecture civil engineering environment

Language(s) - English

Resource type - Journals

eISSN - 2720-6947

pISSN - 1899-0142

DOI - 10.21307/acee-2016-058

Subject(s) - electrodialysis , membrane , chemistry , permeation , forward osmosis , diffusion , potassium nitrate , aqueous solution , chemical engineering , ion exchange , reverse osmosis , chromatography , inorganic chemistry , potassium , ion , organic chemistry , biochemistry , thermodynamics , physics , engineering

The experimental results of the chosen salts permeation with selected heterogeneous and homogenous membranes were analysed as a part of modelling of mass transport in electrodialysis metathesis process (ED-M) for synthesis of KNO3. Heterogeneous membranes swelled more in aqueous solutions and they had higher water uptake than homogeneous membranes. Heterogeneous membranes were also more permeable for both the solute and the solvent, which was attributed to higher solubility of salts in heterogeneous membrane’s material. Diffusion coefficients in ion-exchange membranes tested in this study were found to be dependent on concentration of the upstream solution, with an exception of Ca 2+ in anion-exchange membranes and NO3 - in cation-exchange membranes. The role of osmosis in water transport in ED-M process was found negligible.

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