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Monoethanolamine reclamation using electrodialysis

Lim,J, Aguiar,A, Scholes,CA, Dumée,LF, Stevens,GW and Kentish,SE 2014, Monoethanolamine reclamation using electrodialysis, Industrial and engineering chemistry research, vol. 53, no. 49, pp. 19313-19321, doi: 10.1021/ie503506b.

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Title Monoethanolamine reclamation using electrodialysis
Author(s) Lim,J
Aguiar,A
Scholes,CA
Dumée,LFORCID iD for Dumée,LF orcid.org/0000-0002-0264-4024
Stevens,GW
Kentish,SE
Journal name Industrial and engineering chemistry research
Volume number 53
Issue number 49
Start page 19313
End page 19321
Total pages 9
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2014-12-10
ISSN 0888-5885
1520-5045
Keyword(s) Science & Technology
Technology
Engineering, Chemical
Engineering
MDEA SOLUTION CORROSIVITY
HEAT-STABLE SALTS
EXCHANGE MEMBRANES
PILOT-PLANT
CAPTURE
DEGRADATION
TRANSPORT
MEA
CO2
Summary Monoethanolamine (MEA) is the benchmark solvent for the capture of carbon dioxide from both natural gas and flue gas streams. Despite its effectiveness in absorbing CO2, this solvent can react with impurities in the gas stream to form heat stable salts and other degradation products. These impurities can cause problems such as an increase in solvent viscosity and corrosion of the operating units. Thus, a number of approaches have been considered to mitigate the occurrence of these problems. In this paper, the use of electrodialysis as an online MEA reclamation process in a postcombustion CO2 capture facility is investigated. The study shows that high heat stable salts removal can be achieved with a high MEA recovery. However, it is necessary to limit the current density, particularly at lower salt concentrations, to reduce water splitting. The stability of the commercial ion-exchange membranes in the highly alkaline solvent is also investigated. The results show that the membranes are stable upon exposure to 30 wt % MEA for at least 4.5 months.
Language eng
DOI 10.1021/ie503506b
Field of Research 090403 Chemical Engineering Design
090499 Chemical Engineering not elsewhere classified
Socio Economic Objective 859802 Management of Greenhouse Gas Emissions from Electricity Generation
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071654

Document type: Journal Article
Collection: Institute for Frontier Materials
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