As a part of our SERDP project, we are developing high surface area anode microbial electrochemical cells for the production of hydrogen peroxide coupled with oxidation of black water organics. We are first testing the design for hydrogen production in a microbial electrolysis cell. This post shows some of the key aspects of our design. One of the most important features of our design is to minimize the distance between the anode and the cathode, while still using high surface area electrodes. We have characterized that the Ohmic overpotential (apart from that coming from the membrane) in this design at current densities of 10 A/m2(geometric) is <50 mV. This MEC has an anode volume of ~500 mL. There are two anodes and two cathodes. The anode chamber is shared by two anodes. This replicates the modular approach that we believe is essential for scaling up MXCs. Please find below select photos showing the reactor design, along with a Solidworks file.