Performance of a semi-pilot tubular microbial electrolysis cell (MEC) under several hydraulic retention times and applied voltages

Low Temperature Domestic Wastewater Treatment in a Microbial Electrolysis Cell with 1 m2 Anodes: Towards System Scale‐Up

“…Gil‐Carrera et al, found that COD removal improved with increasing OLR, in a continuous flow tubular MEC fed primary settled domestic wastewater . These authors suggest that exoelectrogenic activity is limited at low COD concentrations, reducing COD removal and hydrogen production .…”

“…Gil‐Carrera et al, found that COD removal improved with increasing OLR, in a continuous flow tubular MEC fed primary settled domestic wastewater . These authors suggest that exoelectrogenic activity is limited at low COD concentrations, reducing COD removal and hydrogen production . Furthermore, a Pearson's correlation of data presented by Escapa et al, in an MEC fed synthetic wastewater, shows a significant positive relationship (r (6) = 0.917, p = 0.010) between influent COD and percentage of COD removed, provided a voltage is applied (i.e., excluding V app = 0).…”

On the Edge of Research and Technological Application: A Critical Review of Electromethanogenesis

“…The former demand of using real wastewater in the studies has been fulfilled and resulted in a better understanding of how to operate such systems. In many cases, the use of real wastewater [139,144,168,173,174,175,176], sewage sludge [152,153], waste activated sludge [177], digested or non-digested slurry [178] was supplemented by other substrates such as glucose [168] or sodium acetate [144] to enhance microorganism growth. Nevertheless, further studies are required to develop strategies for improving the degradation of complex materials and controlling the microbial reactions occurring in the system [25].…”

“…In this sense, Feng and Song proved, in a similar but smaller setup, that coal tar pitch is a biocompatible binder for the enrichment of electrochemically active bacteria, and nickel is a good catalyst for electron transfer on the anode, which enhanced the methane production in the biocathode [181]. Moreover, studies with very low CE have been carried out in semi-pilot scale tubular BES fed with real domestic wastewater [176]. …”

Cathode material as an influencing factor on beer wastewater treatment and methane production in a novel integrated upflow microbial electrolysis cell (Upflow-MEC)

“…In this present study we have investigated the efficiency of lab scale, tubular, upflow MECs, utilizing beer wastewater as substrate for the production of methane. Tubular type MECs have been successfully used by various researchers and has proved to be compatible, reliable and highly efficient for hydrogen production [5,10].…”