title: Ammonia-oxidizing Archaea in laboratory-scale activated sludge systems for wastewater of low- or high-ammonium concentration.
abstract: Ammonia-oxidizing bacteria (AOB) is known as ammonia-oxidizer in wastewater treatment systems. However, ammonia-oxidizing Archaea (AOA) is found from various environments, including wastewater treatment systems. In this study, to investigate the relationships between AOA population and ammonia concentration, AOA was monitored in two laboratory-scale reactors treating artificial wastewater of different ammonium concentrations by denaturing gradient gel electrophoresis targeting ammonia monooxygenase genes. At day 60 of the operation, AOA populations dominant in each reactor differed, suggesting the importance of influent ammonia concentration in dominant AOA selection.
authors: Graduate School of Agricultural Science, Tohoku University, Aoba, Sendai, Japan.
authors: Ryu
authors: R
authors: Oishi
authors: Kayako
authors: K
authors: Hirooka
authors: Kenichi
authors: K
authors: Otawa
authors: Chika
authors: C
authors: Tada
authors: Yutaka
authors: Y
authors: Nakai
mesh_terms: D000641:Ammonia / Q000032:analysis* / Q000378:metabolism*; D001105:Archaea / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*; D058645:Denaturing Gradient Gel Electrophoresis; D010084:Oxidation-Reduction; D010088:Oxidoreductases / Q000235:genetics / Q000378:metabolism; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology*; D062065:Wastewater / Q000737:chemistry* / Q000382:microbiology*
chemical_list: D000641:Ammonia; D010088:Oxidoreductases; D012722:Sewage; D062065:Wastewater; C045582:ammonia monooxygenase