Iron-carbon micro-electrolysis facilitates autotrophic denitrification and Feammox in tidal flow constructed wetlands for enhanced nitrogen removal and reduced N2O emissions
Abstract
Novel Fe-C tidal flow system boosts NH4+-N and TN removal in constructed wetlands. Tidal operation promoted Fe cycling and microbe enrichment, enhancing denitrification. Fe-C release Fe2+ via galvanic cell reaction to promote denitrification and Feammox. Notable increase in Fe-reducing, autotrophic denitrifying bacteria and gene abundance. Autotrophic denitrification pathway enhances TN removal while reducing N2O emissions.
- Publication:
-
Chemical Engineering Journal
- Pub Date:
- April 2024
- DOI:
- 10.1016/j.cej.2024.150367
- Bibcode:
- 2024ChEnJ.48650367Z
- Keywords:
-
- Constructed wetlands;
- Tidal flow;
- Iron-carbon;
- Autotrophic denitrification;
- Feammox