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Ammonia‐oxidizing Archaea in laboratory‐scale activated sludge systems for wastewater of low‐ or high‐ammonium concentration
Author(s) -
OISHI Ryu,
HIROOKA Kayako,
OTAWA Kenichi,
TADA Chika,
NAKAI Yutaka
Publication year - 2012
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/j.1740-0929.2011.00995.x
Subject(s) - ammonia , wastewater , ammonia monooxygenase , archaea , ammonium , nitrification , activated sludge , chemistry , oxidizing agent , temperature gradient gel electrophoresis , environmental chemistry , sewage treatment , population , bacteria , biology , environmental engineering , biochemistry , environmental science , nitrogen , 16s ribosomal rna , organic chemistry , genetics , demography , sociology , gene
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.