Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell
A microbial electrolysis cell (MEC) was operated in continuous-flow condition to obtain cathodic CO2 reduction into acetate and methane along with COD anodic oxidation. Under steady-state conditions, most of the electron equivalents produced by COD anodic oxidation (866 mgCOD/Ld) were diverted into...
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AIDIC Servizi S.r.l.
2016-05-01
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Series: | Chemical Engineering Transactions |
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doaj-af604e235b4f4096b5029af01000fa5a2021-02-19T21:10:32ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162016-05-014910.3303/CET1649075Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis CellM. ZeppilliI. CeccarelliM. VillanoM. MajoneA microbial electrolysis cell (MEC) was operated in continuous-flow condition to obtain cathodic CO2 reduction into acetate and methane along with COD anodic oxidation. Under steady-state conditions, most of the electron equivalents produced by COD anodic oxidation (866 mgCOD/Ld) were diverted into current rather than microbial growth, with an average Coulombic efficiency of 95 ± 8 %. In the cathodic chamber, acetate and methane formation from CO2 reduction accounted for 76% of the equivalents generated in the anodic oxidation reaction. Because a spill of cathodic liquid phase was necessary in order to counterbalance osmotic diffusion across the PEM, it was also possible to spill from the cathodic chamber a concentrated stream of acetate (248 ± 16meq/L). Moreover, as an additional effect, cation transport across the proton exchange membrane (PEM) and the consequent alkalinity generation made it possible to accumulate ammoniumnitrogen (242 ± 19 mgN/L) and bicarbonate (22.49 ± 1.45 gHCO3-/L). Hence, the MEC combined COD andCO2 removal in addition to nutrients and energy recovery from an anodic influent that simulated an urban wastewater.https://www.cetjournal.it/index.php/cet/article/view/3127 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
M. Zeppilli I. Ceccarelli M. Villano M. Majone |
spellingShingle |
M. Zeppilli I. Ceccarelli M. Villano M. Majone Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell Chemical Engineering Transactions |
author_facet |
M. Zeppilli I. Ceccarelli M. Villano M. Majone |
author_sort |
M. Zeppilli |
title |
Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell |
title_short |
Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell |
title_full |
Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell |
title_fullStr |
Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell |
title_full_unstemmed |
Reduction of Carbon Dioxide into Acetate in a Fully Biological Microbial Electrolysis Cell |
title_sort |
reduction of carbon dioxide into acetate in a fully biological microbial electrolysis cell |
publisher |
AIDIC Servizi S.r.l. |
series |
Chemical Engineering Transactions |
issn |
2283-9216 |
publishDate |
2016-05-01 |
description |
A microbial electrolysis cell (MEC) was operated in continuous-flow condition to obtain cathodic CO2 reduction into acetate and methane along with COD anodic oxidation. Under steady-state conditions, most of the electron equivalents produced by COD anodic oxidation (866 mgCOD/Ld) were diverted into current rather than microbial growth, with an average Coulombic efficiency of 95 ± 8 %. In the cathodic chamber, acetate and methane formation from CO2 reduction accounted for 76% of the equivalents generated in the anodic oxidation reaction. Because a spill of cathodic liquid phase was necessary in order to counterbalance osmotic diffusion across the PEM, it was also possible to spill from the cathodic chamber a concentrated stream of acetate (248 ± 16meq/L). Moreover, as an additional effect, cation transport across the proton exchange membrane (PEM) and the consequent alkalinity generation made it possible to accumulate ammoniumnitrogen (242 ± 19 mgN/L) and bicarbonate (22.49 ± 1.45 gHCO3-/L). Hence, the MEC combined COD andCO2 removal in addition to nutrients and energy recovery from an anodic influent that simulated an urban wastewater. |
url |
https://www.cetjournal.it/index.php/cet/article/view/3127 |
work_keys_str_mv |
AT mzeppilli reductionofcarbondioxideintoacetateinafullybiologicalmicrobialelectrolysiscell AT iceccarelli reductionofcarbondioxideintoacetateinafullybiologicalmicrobialelectrolysiscell AT mvillano reductionofcarbondioxideintoacetateinafullybiologicalmicrobialelectrolysiscell AT mmajone reductionofcarbondioxideintoacetateinafullybiologicalmicrobialelectrolysiscell |
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