Kinetics and scale up of oxygen reducing cathodic biofilms.

ABSTRACT: The goals of this work were to study the kinetics and investigate the factors controlling the scale up of oxygen reducing mixed culture cathodic biofilms. Cathodic biofilms were enriched on different electrode sizes (14.5 cm², 40.3 cm², 131 cm² and 466 cm²). Biofilm enrichment shifted the oxygen reduction onset potential from -0.1 V_Ag/AgCl to 0.3 V_Ag/AgCl, indicating the biofilm catalyzed oxygen reduction. The kinetics of oxygen reduction were studied by varying the bulk dissolved oxygen concentration. Oxygen reduction followed a Michaelis-Menten kinetics on all electrode sizes. The maximum current density decreased with increasing electrode surface area (-97.0 ± 10.6 μA/cm², -76.0 ± 8.2 μA/cm², -66.3 ±

SUBMITTER: Mohamed A 

PROVIDER: S-EPMC8283157 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature