NDLI: Investigation of Transport Processes through Ion-Exchange Membranes Used in the Production of Amines from Their Salts Using Bipolar Electrodialysis.

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Investigation of Transport Processes through Ion-Exchange Membranes Used in the Production of Amines from Their Salts Using Bipolar Electrodialysis.

Content Provider	Europe PMC
Author	Karpenko, Tatyana Kovalev, Nikita Shramenko, Vladislava Sheldeshov, Nikolay
Editor	Wang, Yaoming
Copyright Year	2022
Abstract	The influence of the nature of amine solutions on the frequency spectrum of the electrochemical impedance of the bipolar membrane aMB-2m is investigated. Moreover, the effect of the circulation rate of solutions in the electrodialyzer chambers on the volt-ampere characteristics of the Ralex AMH and MA-40L anion-exchange membranes and the aMB-2m bipolar membrane has been investigated. The diffusion characteristics of various types of anion-exchange membranes in a system containing dimethylammonium sulfate ((DEA)2H2SO4), as well as the diffusion characteristics of the Ralex AMH membrane in systems with methylammonium sulfate, dimethylammonium sulfate, diethylammonium sulfate, and ethylenediammonium sulfate ((MA)2H2SO4, (DMA)2H2SO4, (DEA)2H2SO4, EDAH2SO4) have been studied. It is shown that diffusion permeability depends on the structure and composition of anion-exchange membranes, as well as on the nature of amines. The technical and economic characteristics of the electromembrane processes for the production of amines and sulfuric acid from amine salts are determined. It is shown that when using Ralex AMH anion-exchange membranes in an electrodialyzer together with bipolar aMB-2m membranes, higher concentrations of diethylamine and sulfuric acid are achieved, compared with the use of MA-40L anion-exchange membranes.
Volume Number	12
PubMed Central reference number	PMC9696810
Issue Number	11
PubMed reference number	36363681
Journal	Membranes (Basel)
e-ISSN	20770375
DOI	10.3390/membranes12111126
Language	English
Publisher	MDPI
Publisher Date	2022-11-10
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2022 by the authors.
Subject Keyword	bipolar membrane anion-exchange membrane electrochemical impedance bipolar electrodialysis diffusion permeability coefficient current-voltage characteristics amines
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Process Chemistry and Technology Filtration and Separation

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