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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/LO1418" target="_blank" >LO1418: Progresivní rozvoj Membránového inovačního centra</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Water Process Engineering

ISSN

2214-7144

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

123-129

Kód UT WoS článku

000431411700015

EID výsledku v databázi Scopus

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