Three-chamber bioelectrochemical system for biogas upgrading and nutrient recovery
Here, an innovative three-chamber bioelectrochemical system configuration is proposed to combine COD, CO2 and NH4+ removal into a single device. In the proposed process, while COD oxidation and CO2 reduction occurred, respectively, in the anodic and cathodic chamber, the consequent current generation promoted the migration of target ionic species towards an intermediate accumulation chamber, across cation and anion exchange membranes, respectively.