title: Distribution and genetic diversity of functional microorganisms in different CANON reactors.
abstract: Completely autotrophic nitrogen removal over nitrite (CANON) has been regarded as an efficient and economical process for nitrogen removal from wastewater. The distribution and genetic diversity of the functional microorganisms in five lab-scale CANON reactors have been investigated by using some molecular biology methods. Nitrosomonas-like aerobic ammonium oxidizing bacteria (AerAOB) and Candidatus Brocadia-related anaerobic ammonium oxidizing bacteria (AnAOB) were detected as predominant functional microbes in the five reactors while Nitrobacter-like nitrite oxidizing bacteria (NOB) existed only in the systems operated at ambient temperature. Communities of AerAOB and AnAOB were almost similar among the five reactors while the distribution of the functional microbes was either scattered or densely packed. Meanwhile, this study has demonstrated the feasibility of starting up CANON by inoculating conventional activated sludge in low ammonium content at ambient temperature.
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.forename: Huiping
authors.initials: H
authors.lastname: Zeng
authors.forename: Xiangkun
authors.initials: X
authors.lastname: Li
authors.forename: Yuhai
authors.initials: Y
authors.lastname: Liang
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Chang
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D052818:Autotrophic Processes / Q000235:genetics*; D001419:Bacteria / Q000235:genetics*; D001483:Base Sequence; D018441:Biofilms; D019149:Bioreactors / Q000382:microbiology*; D058645:Denaturing Gradient Gel Electrophoresis; D014644:Genetic Variation; D017404:In Situ Hybridization, Fluorescence; D008969:Molecular Sequence Data; D009573:Nitrites / Q000737:chemistry*; D009584:Nitrogen / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D010802:Phylogeny; D000644:Quaternary Ammonium Compounds / Q000378:metabolism
chemical_list: D009573:Nitrites; D000644:Quaternary Ammonium Compounds; D009584:Nitrogen