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Microbial electrolysis cell (MEC): A step ahead towards hydrogen-evolving cathode operated at high current density
| Content Provider | Hyper Articles en Ligne (HAL) |
|---|---|
| Author | Rousseau, Raphaël Ketep, Françoise Etcheverry, Luc Délia-Dupuy, Marie-Line Bergel, Alain |
| Copyright Year | 2020 |
| Abstract | A microbial electrolysis cell (MEC) 6 L in volume was designed with the objective of maximizing the current density at the cathode. The highly saline electrolyte (NaCl 45 g·L−1) led to a low ohmic resistance, of 0.10 Ω, and made it possible to maintain current density of around 50 A·m−2 for weeks, with peak values up to 90 A·m−2 for hours. This was the highest current density reached in a MEC prototype so far. The gas outlet contained at least 66% H2, which gave a hydrogen flow rate up to 650 Ld−1 m−2 of cathode surface area. The energy and thermal yields were discussed. A numerical mass balance model was designed, which explained the value of the anode Faradaic yield above 100% and pointed out new issues related to high current density operation. In particular, it was shown that, at high current density, carbonate deposit can impact the gas composition. |
| Related Links | https://hal.science/hal-02489337/file/Rousseau_25512.pdf |
| ISSN | 2589014X |
| DOI | 10.1016/j.biteb.2020.100399 |
| Journal | Bioresource Technology Reports |
| Volume Number | 9 |
| Language | English |
| Publisher | HAL CCSD Elsevier |
| Publisher Date | 2020-01-01 |
| Access Restriction | Open |
| Subject Keyword | Saline medium Hydrogen Microbial fuel cell Microbial electrochemical technology Bioelectrochemical system Other Life Sciences [q-bio] Biotechnology Chemical Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Environmental Engineering Renewable Energy, Sustainability and the Environment Bioengineering |
