Abstract
Enhanced nitrate removal in the cathode chamber of bioelectrochemical systems (BES) using aerated swine wastewater under high nitrate levels and low organic carbon was investigated in this study, focusing on the relationship between nitrogen and bacterial communities involved in denitrification pathways. BESs with the anion exchange membrane (AEM) under cathodic applied potentials of −0.6 V vs. AgCl/AgCl reference electrode showed a removal rate of 99 ± 2 mg L−1 d−1. Moreover, organic compounds from the untreated full-strength wastewater were simultaneously eliminated in the anode chamber with a removal rate of 0.46 g COD L−1 d−1 with achieved efficiency of 61.4 ± 0.5% from an initial concentration of around 5 g of COD L−1, measured over the course of 7 days. The highest microbial diversity was detected in BESs under potentials of −0.6 V, which include autotrophic denitrifiers such as Syderoxidans, Gallionela and Thiobacillus.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.