Fluid-like cathode enhances valuable biomass production from brewery wastewater in purple phototrophic bacteria.

ABSTRACT: The climate crisis requires rethinking wastewater treatment to recover resources, such as nutrients and energy. In this scenario, purple phototrophic bacteria (PPB), the most versatile microorganisms on earth, are a promising alternative to transform the wastewater treatment plant concept into a biorefinery model by producing valuable protein-enriched biomass. PPB are capable of interacting with electrodes, exchanging electrons with electrically conductive materials. In this work, we have explored for mobile-bed (either stirred or fluidized) cathodes to maximize biomass production. For this purpose, stirred-electrode reactors were operated with low-reduced (3.5 e^-/C) and high-reduced (5.9 e^-/C) wastewater under cathodic polarization (-0.4 V and -0.8 V vs. Ag/AgCl). We

SUBMITTER: Manchon C 

PROVIDER: S-EPMC10040824 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature