Chemical regeneration of IEMs exposed to produced water from enhanced oil recovery

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F20%3AN0000027" target="_blank" >RIV/28676092:_____/20:N0000027 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.czemp.cz/sites/default/files/clanek/1906/prilohy/e-sbornik.pdf" target="_blank" >http://www.czemp.cz/sites/default/files/clanek/1906/prilohy/e-sbornik.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Chemical regeneration of IEMs exposed to produced water from enhanced oil recovery

Popis výsledku v původním jazyce

Electrodialysis (ED) has been successfully used to reduce the salinity of the polymer flooding produced water, although it is still a relatively recent application. In ED process, ions migrate from the dilute compartment through the ion exchange membranes (IEMs) to the concentrated compartment under direct current electric field. However, because of the organic and inorganic matters in polymer flooding produced water, fouling in IEMs can occur and it is a serious issue in ED since it decreases the IEMs exchange capacity, and as a consequence, increases costs related to IEMs regeneration and/or replacement. Therefore, this work investigated the fouling interactions and two different cleaning methods, consisted in acid-base and acid-base-surfactant cleaning. As the surfactant, sodium;4 dodecylbenzenesulfonate (SDBS) in a form of solution (0.4 wt%) was used. The results demonstrated that the cleaning procedures are promising, although not every membrane sample proved enhanced properties. As for the used membranes, acid-base cleaning improved the area resistance by an average value of 3.5%, resulting in a final area resistance of 11.4 and 6.3 Ω.cm2 for anion exchange membrane (AEM) and cation exchange membrane (CEM), respectively. Acid-base-SDBS cleaning improved the area resistance by 3.0% for AEM and 10.0% for CEM. However, the improvement of area resistance is still low and cleaning methods were not effective enough to be considered successful. Permselectivity results show a decrease in value for all samples regardless the cleaning method, a fact that was expected since the swelling and porous enlargement during the cleaning decreases the membrane’s permselectivity. Ion exchange capacity and FTIR evidenced that regeneration using only acid and base is more favorable over the procedure including the surfactant because it could be observed that the surfactant interacts with the membranes, sometimes worsening their properties. This work indicated that acid-base cleaning alone is efficient for the regeneration of the membranes, although acid base surfactant cleaning should be optimized to validate the findings contained in this report.

Název v anglickém jazyce

Chemical regeneration of IEMs exposed to produced water from enhanced oil recovery

Popis výsledku anglicky

Electrodialysis (ED) has been successfully used to reduce the salinity of the polymer flooding produced water, although it is still a relatively recent application. In ED process, ions migrate from the dilute compartment through the ion exchange membranes (IEMs) to the concentrated compartment under direct current electric field. However, because of the organic and inorganic matters in polymer flooding produced water, fouling in IEMs can occur and it is a serious issue in ED since it decreases the IEMs exchange capacity, and as a consequence, increases costs related to IEMs regeneration and/or replacement. Therefore, this work investigated the fouling interactions and two different cleaning methods, consisted in acid-base and acid-base-surfactant cleaning. As the surfactant, sodium;4 dodecylbenzenesulfonate (SDBS) in a form of solution (0.4 wt%) was used. The results demonstrated that the cleaning procedures are promising, although not every membrane sample proved enhanced properties. As for the used membranes, acid-base cleaning improved the area resistance by an average value of 3.5%, resulting in a final area resistance of 11.4 and 6.3 Ω.cm2 for anion exchange membrane (AEM) and cation exchange membrane (CEM), respectively. Acid-base-SDBS cleaning improved the area resistance by 3.0% for AEM and 10.0% for CEM. However, the improvement of area resistance is still low and cleaning methods were not effective enough to be considered successful. Permselectivity results show a decrease in value for all samples regardless the cleaning method, a fact that was expected since the swelling and porous enlargement during the cleaning decreases the membrane’s permselectivity. Ion exchange capacity and FTIR evidenced that regeneration using only acid and base is more favorable over the procedure including the surfactant because it could be observed that the surfactant interacts with the membranes, sometimes worsening their properties. This work indicated that acid-base cleaning alone is efficient for the regeneration of the membranes, although acid base surfactant cleaning should be optimized to validate the findings contained in this report.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/FV40053" target="_blank" >FV40053: Elektromembránové moduly pro provoz při zvýšených teplotách se systémem aktivní regulace stahovacích sil</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Workshop of Students’ Presentations 2020 Book of Abstracts

ISBN

978-80-907673-2-4

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

16-17

Název nakladatele

Česká membránová platforma z.s.

Místo vydání

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Místo konání akce

Stráž pod Ralskem / online konference

Datum konání akce

21. 10. 2020

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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