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

Result code in 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>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/FV40053" target="_blank" >FV40053: Electromembrane modules for high temperature operation with system of active tightening force control</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Article name in the collection

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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Number of pages

2

Pages from-to

16-17

Publisher name

Česká membránová platforma z.s.

Place of publication

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Event location

Stráž pod Ralskem / online konference

Event date

Oct 21, 2020

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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