Active bacteria driving N2O mitigation and dissimilatory nitrate reduction to ammonium in ammonia recovery bioreactors.

ABSTRACT: Shifting from ammonia removal to recovery is the current strategy in wastewater treatment management. We recently developed a microaerophilic activated sludge system for retaining ammonia whereas removing organic carbon with minimal N2O emissions. A comprehensive understanding of nitrogen metabolisms in the system is essential to optimize system performance. Here, we employed metagenomics and metatranscriptomics analyses to characterize the microbial community structure and activity during the transition from a microoxic to an oxic condition. A hybrid approach combining high-quality short reads and Nanopore long reads reconstructed 98 medium- to high-quality non-redundant metagenome-assembled genomes from the communities. The suppressed bacterial ammonia monooxygenase (amoA) expression was

SUBMITTER: Phan HV 

PROVIDER: S-EPMC11879220 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature