Concentrating sodium hydroxide by electrodialysis after the mercerization step
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000021" target="_blank" >RIV/28676092:_____/17:N0000021 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Concentrating sodium hydroxide by electrodialysis after the mercerization step
Original language description
The aim of this work was to investigate the possibility of the sodium hydroxide solution treatment after the mercerisation process. Mercerisation is a process at which a tissue is treated by concentrated sodium hydroxide for a short time and subsequently washing with both cold and hot water streams. Demineralization (concentrating) was conducted on pure solution of NaOH by laboratory equipment EDR-Z 10/0.8 using polypropylene based membranes Ralex® CM-PP as cation exchanger and AM-PP as anion exchanger. Different concentrations (1%, 3%, 9%) of NaOH solutions were examined as diluate, while concentrate chamber was 9% NaOH, and 3% NaOH was used as the electrode solution. The electrodialysis was configured so that when an electric field is applied Na+ and OH- ions are transferred through the membranes into the concentrate chamber. The efficiency of the electrodialysis was further optimized by study the parameters such as: mass flux, current efficiency, electrical charge, linear flow, energy consumption. The final concentrate solution conductivity was in the range of 310-350 mS/cm (corresponding to 9-11%) during all tests. Furthermore, since the electrochemical properties of the membranes play an important role in electrodialysis efficiency the resistivity and permselectivity of the membranes were measured before and after the electrodialysis process.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/QJ1510341" target="_blank" >QJ1510341: New technologies and new food products with membrane processes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.
Data specific for result type
Article name in the collection
44th International Conference of the Slovak Society of Chemical Engineering
ISBN
978-80-89597-58-1
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
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Publisher name
Slovenská spoločnosť chemického inžinierstva
Place of publication
Slovenská republika
Event location
Nízké Tatry, Slovenská republika
Event date
May 22, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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