Separation of sodium and calcium chloride using electrodialysis with monovalent-ion-selective membranes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F19%3AN0000098" target="_blank" >RIV/28676092:_____/19:N0000098 - isvavai.cz</a>
Result on the web
<a href="https://sscheconference.sk/papers/list/2" target="_blank" >https://sscheconference.sk/papers/list/2</a>
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Separation of sodium and calcium chloride using electrodialysis with monovalent-ion-selective membranes
Original language description
With recent environmental legislation, selective separation of monovalent and divalent ions from industrial brines represents a subject of growing concern, because it enables recovery of salts and water reuse, thus reducing operating costs as well as amount of waste brines. Although removal of divalent ions from reverse osmosis concentrates can be achieved by electrodialysis (ED) using monovalent-ion-selective membranes, its applicability at higher concentrations of divalent ions needs further research, as this method could be less energy demanding than nanofiltration coupled with conventional ED. Laboratory-scale ED stack with monovalent-ion-selective membranes was used to perform a series of experiments in order to separate sodium chloride from a model solution, which represented an effluent brine produced by industrial water softening plants. Firstly, transport of sodium chloride was studied in a single solution ED. Secondly, experiments with the model solution of calcium chloride (16 wt. %) and sodium chloride (5 wt. %) were undertaken. The experiments revealed that the transfer of calcium and sodium ions through cation exchange membranes was similar and, moreover, the presence of calcium ions decreased sodium ions flux by approximately 30%. Therefore monovalent selective ED is not viable for managing such brines.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/LO1418" target="_blank" >LO1418: Progressive development of the Membrane Innovation Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the 46th International Conference of SSCHE
ISBN
978-80-8208-011-0
ISSN
—
e-ISSN
—
Number of pages
3
Pages from-to
174
Publisher name
Slovak Society of Chemical Engineering
Place of publication
Bratislava
Event location
Tatranské Matliare, Slovenská Republika
Event date
May 20, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—