Abstract
Improving the design of microbial electrolysis cells (MECs)requires better identification of the specific factors that limit performance. The contributions of the electrodes, solution, and membrane to internal resistance were quantified here using the newly-developed electrode potential slope (EPS)method. The largest portion of total internal resistance (120 ± 0 mΩ m2)was associated with the carbon felt anode (71 ± 5 mΩ m2, 59% of total), likely due to substrate and ion mass transfer limitations arising from stagnant fluid conditions and placement of the electrode against the anion exchange membrane. The anode resistance was followed by the solution (25 mΩ m2)and cathode (18 ± 2 mΩ m2)resistances, and a negligible membrane resistance. Wide adoption and application of the EPS method will enable direct comparison between the performance of the components of MECs with different solution characteristics, electrode size and spacing, reactor architecture, and operating conditions.
| Original language | English (US) |
|---|---|
| Article number | 121418 |
| Journal | Bioresource technology |
| Volume | 287 |
| DOIs | |
| State | Published - Sep 1 2019 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
- Waste Management and Disposal
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Applying the electrode potential slope method as a tool to quantitatively evaluate the performance of individual microbial electrolysis cell components. / Cario, Benjamin P.; Rossi, Ruggero; Kim, Kyoung Yeol; Logan, Bruce Ernest.
In: Bioresource technology, Vol. 287, 121418, 01.09.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Applying the electrode potential slope method as a tool to quantitatively evaluate the performance of individual microbial electrolysis cell components
AU - Cario, Benjamin P.
AU - Rossi, Ruggero
AU - Kim, Kyoung Yeol
AU - Logan, Bruce Ernest
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Improving the design of microbial electrolysis cells (MECs)requires better identification of the specific factors that limit performance. The contributions of the electrodes, solution, and membrane to internal resistance were quantified here using the newly-developed electrode potential slope (EPS)method. The largest portion of total internal resistance (120 ± 0 mΩ m2)was associated with the carbon felt anode (71 ± 5 mΩ m2, 59% of total), likely due to substrate and ion mass transfer limitations arising from stagnant fluid conditions and placement of the electrode against the anion exchange membrane. The anode resistance was followed by the solution (25 mΩ m2)and cathode (18 ± 2 mΩ m2)resistances, and a negligible membrane resistance. Wide adoption and application of the EPS method will enable direct comparison between the performance of the components of MECs with different solution characteristics, electrode size and spacing, reactor architecture, and operating conditions.
AB - Improving the design of microbial electrolysis cells (MECs)requires better identification of the specific factors that limit performance. The contributions of the electrodes, solution, and membrane to internal resistance were quantified here using the newly-developed electrode potential slope (EPS)method. The largest portion of total internal resistance (120 ± 0 mΩ m2)was associated with the carbon felt anode (71 ± 5 mΩ m2, 59% of total), likely due to substrate and ion mass transfer limitations arising from stagnant fluid conditions and placement of the electrode against the anion exchange membrane. The anode resistance was followed by the solution (25 mΩ m2)and cathode (18 ± 2 mΩ m2)resistances, and a negligible membrane resistance. Wide adoption and application of the EPS method will enable direct comparison between the performance of the components of MECs with different solution characteristics, electrode size and spacing, reactor architecture, and operating conditions.
UR - http://www.scopus.com/inward/record.url?scp=85065239178&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065239178&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2019.121418
DO - 10.1016/j.biortech.2019.121418
M3 - Article
C2 - 31078815
AN - SCOPUS:85065239178
VL - 287
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
M1 - 121418
ER -