ELECTRODIALYSIS OF HIGHLY CONCENTRATED SOLUTIONS OF INORGANIC SALTS AND ITS OPERATIONAL LIMITS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F18%3AN0000091" target="_blank" >RIV/28676092:_____/18:N0000091 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.czemp.cz/cs/aktuality/pozvanka-na-workshop-studentskych-praci-2018" target="_blank" >http://www.czemp.cz/cs/aktuality/pozvanka-na-workshop-studentskych-praci-2018</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

ELECTRODIALYSIS OF HIGHLY CONCENTRATED SOLUTIONS OF INORGANIC SALTS AND ITS OPERATIONAL LIMITS

Popis výsledku v původním jazyce

As natural sources of freshwater slowly disappear and surface water quality decreases, more and more stringent legislation is applied in waste water treatment. Soon neutralized brine will not be allowed to discharge, and therefore an economically viable brine treatment will be highly desirable. Electrodialysis presents an interesting technology as it can produce highly concentrated solutions that can be evaporated and hence produce zero liquid waste. In this work various inorganic salts were tested on a laboratory scale electrodialysis unit, in order to find its operational limits. It was observed that the final maximum concentration may differ significantly between electrolytes, but typically 200 g/kg should be achievable. Interestingly, electric current and therefore electrodialysis performance was decidedly smaller in the case of magnesium salts, when compared to potassium salts. Oversaturated solution was formed in the case of KNO3. These findings support the idea that electrodialysis may have its firm position in zero liquid discharge systems, but it is a complex technology that is best paired with proper pre-treatment and final evaporation step.

Název v anglickém jazyce

ELECTRODIALYSIS OF HIGHLY CONCENTRATED SOLUTIONS OF INORGANIC SALTS AND ITS OPERATIONAL LIMITS

Popis výsledku anglicky

As natural sources of freshwater slowly disappear and surface water quality decreases, more and more stringent legislation is applied in waste water treatment. Soon neutralized brine will not be allowed to discharge, and therefore an economically viable brine treatment will be highly desirable. Electrodialysis presents an interesting technology as it can produce highly concentrated solutions that can be evaporated and hence produce zero liquid waste. In this work various inorganic salts were tested on a laboratory scale electrodialysis unit, in order to find its operational limits. It was observed that the final maximum concentration may differ significantly between electrolytes, but typically 200 g/kg should be achievable. Interestingly, electric current and therefore electrodialysis performance was decidedly smaller in the case of magnesium salts, when compared to potassium salts. Oversaturated solution was formed in the case of KNO3. These findings support the idea that electrodialysis may have its firm position in zero liquid discharge systems, but it is a complex technology that is best paired with proper pre-treatment and final evaporation step.

Druh

D - Stať ve sborníku

CEP obor

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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

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Workshop of Students´ Presentations 2018

ISBN

978-80-906831-3-6

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

50-51

Název nakladatele

Czech Membrane Platform

Místo vydání

Česká Lípa

Místo konání akce

Česká Lípa

Datum konání akce

24. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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