Considerations on the use of microsensors to profile dissolved H2 concentrations in microbial electrochemical reactors.

ABSTRACT: Measuring the distribution and dynamics of H2 in microbial electrochemical reactors is valuable to gain insights into the processes behind novel bioelectrochemical technologies, such as microbial electrosynthesis. Here, a microsensor method to measure and profile dissolved H2 concentrations in standard H-cell reactors is described. Graphite cathodes were oriented horizontally to enable the use of a motorized microprofiling system and a stereomicroscope was used to place the H2 microsensor precisely on the cathode surface. Profiling was performed towards the gas-liquid interface, while preserving the electric connections and flushing the headspace (to maintain anoxic conditions) and under strict temperature control (to overcome the temperature sensitivity of the microsensors). This method w

SUBMITTER: Sandfeld T 

PROVIDER: S-EPMC10798470 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature