Due to anthropogenic interference,many lakes have faced eutrophic problems caused by excessive nitrogen(N),which affects the nitrogen balance and ecological functions of lake ecosystems.This review article systematically describes the potential nitrogen removal processes coupling nitrogen and iron in lake ecosystems,which are catalyzed by the microorganisms utilizing nitrogen-containing compounds and widely distributed iron,with foucus on the latest progress in denitrification,dissimilatory nitrate reduction to am-monium(DNRA),and anammox coupling iron(Fe),and illustrates the redox cycle of Fe(Ⅱ)and Fe(Ⅲ)that can continuously support the reaction with nitrogen-containing compounds.In-depth understanding of the mechanisms of nitrogen-iron transformation driven by microorganisms will facilitate the understanding about their contributions to a series of environmental and ecological issues such as endogenous nitrogen re-moval in lakes.
关键词
湖泊生态系统/微生物/氮-铁耦合/依赖硝酸盐还原的铁氧化/铁氧化耦合异化硝酸盐还原成铵/铁氨氧化
Key words
lake ecosystem/microorganism/coupled nitrogen-iron reaction/nitrate-dependent iron oxidiza-tion/Fe(Ⅱ)-DNRA/Feammox
维普
万方数据