Laughing gas (nitrous oxide or N₂O) is primarily released by the microorganisms responsible for cleaning our wastewater. These microbes live in complex communities, with each group performing a specific role. Emissions vary throughout the day and across seasons, and the intricate microbial processes behind them remain largely unknown—making it difficult to design effective strategies to reduce emissions.
Simple oxygen tweaks could curb ‘laughing gas’ emissions from wastewater systems
