| Abstract | This study demonstrates the continuous conversion of CO₂ to CH₄ in a laboratory-scale Microbial Electrosynthesis System (MES). The introduction of a Ni salt at 0.2 g L⁻¹ into the cathode influent stream improved the CO₂ conversion. After the introduction of the Ni salt at an applied voltage of 2.8 V, the MES with the carbon-felt cathode reached a CH₄ production of 422 ± 36 mL d⁻¹ (0.81 L Lc⁻¹ d⁻¹), which was 39 ± 12% higher than that of this system before the Ni salt was introduced. Additionally, when the dissolved Ni salt was removed from the influent solution, the MES performance remained unchanged, thus confirming the in-situ deposition of Ni on the carbon-felt cathode and its catalytic effect. |
|---|
