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dc.contributor.author
Jourdin, Ludovic
dc.contributor.author
Freguia, Stefano
dc.contributor.author
Flexer, Victoria
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dc.contributor.author
Keller, Jurg
dc.date.available
2018-04-18T21:53:39Z
dc.date.issued
2016-01
dc.identifier.citation
Jourdin, Ludovic; Freguia, Stefano; Flexer, Victoria; Keller, Jurg; Bringing High-Rate, CO2-Based Microbial Electrosynthesis Closer to Practical Implementation through Improved Electrode Design and Operating Conditions; American Chemical Society; Environmental Science & Technology; 50; 4; 1-2016; 1982-1989
dc.identifier.issn
0013-936X
dc.identifier.uri
http://hdl.handle.net/11336/42580
dc.description.abstract
The enhancement of microbial electrosynthesis (MES) of acetate from CO2 to performance levels that could potentially support practical implementations of the technology must go through the optimization of key design and operating conditions. We report that higher proton availability drastically increases the acetate production rate, with pH 5.2 found to be optimal, which will likely suppress methanogenic activity without inhibitor addition. Applied cathode potential as low as −1.1 V versus SHE still achieved 99% of electron recovery in the form of acetate at a current density of around −200 A m–2. These current densities are leading to an exceptional acetate production rate of up to 1330 g m–2 day–1 at pH 6.7. Using highly open macroporous reticulated vitreous carbon electrodes with macropore sizes of about 0.6 mm in diameter was found to be optimal for achieving a good balance between total surface area available for biofilm formation and effective mass transfer between the bulk liquid and the electrode and biofilm surface. Furthermore, we also successfully demonstrated the use of a synthetic biogas mixture as carbon dioxide source, yielding similarly high MES performance as pure CO2. This would allow this process to be used effectively for both biogas quality improvement and conversion of the available CO2 to acetate.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Otras Ciencias Químicas
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Bringing High-Rate, CO2-Based Microbial Electrosynthesis Closer to Practical Implementation through Improved Electrode Design and Operating Conditions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-17T19:58:09Z
dc.journal.volume
50
dc.journal.number
4
dc.journal.pagination
1982-1989
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington
dc.description.fil
Fil: Jourdin, Ludovic. The University Of Queensland; Australia
dc.description.fil
Fil: Freguia, Stefano. The University Of Queensland; Australia
dc.description.fil
Fil: Flexer, Victoria. The University Of Queensland; Australia
dc.description.fil
Fil: Keller, Jurg. The University Of Queensland; Australia
dc.journal.title
Environmental Science & Technology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.est.5b04431
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.est.5b04431
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