The use of electrodialysis for recovery of sodium hydroxide from the high alkaline solution as a model of mercerization wastewater

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000075" target="_blank" >RIV/28676092:_____/17:N0000075 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jwpe.2017.10.008" target="_blank" >http://dx.doi.org/10.1016/j.jwpe.2017.10.008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jwpe.2017.10.008" target="_blank" >10.1016/j.jwpe.2017.10.008</a>

Result language
angličtina
Original language name
The use of electrodialysis for recovery of sodium hydroxide from the high alkaline solution as a model of mercerization wastewater
Original language description
The possibility of alkali recovery from a high alkaline solution as a model for mercerization wastewater by electrodialysis (ED) was examined. ED with feed and bleed configuration was used in which the diluate chamber conductivity was kept at a given value by dosing an alkaline solution. The effect of the diluate chamber’s concentration on the efficiency of the ED was investigated. It was found out that the efficiency of the ED was just slightly affected by changing the concentration of the solution in diluate chamber. The calculated values of current efficiency in ED process were about 60 %. Since the ion exchange membranes, particularly the anion exchange ones are suspected to be damaged in high alkaline media, their properties including electrochemical resistivity, apparent permselectivity, FT-IR spectrum, and the current-voltage characteristics were investigated. The results confirmed that the membranes possess a promising chemical stability since their properties were not affected by the alkaline media. Hence, the obtained results show that the electrodialysis is an appropriate method for alkaline recovery.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering

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)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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