title: Heterotrophic nitrification and aerobic denitrification by a novel Halomonas campisalis.
abstract: A novel halophilic strain that could carry out heterotrophic nitrification and aerobic denitrification was isolated and named as Halomonas campisalis ha3. It removed inorganic nitrogen compounds (e.g. NO3 (-), NO2 (-) and NH4 (+)) simultaneously, and grew well in the medium containing up to 20 % (w/v) NaCl. PCR revealed four genes in the genome of ha3 related to aerobic denitrification: napA, nirS, norB and nosZ. The optimal conditions for aerobic denitrification were pH 9.0, at 37 °C, with 4 % (w/v) NaCl and sodium succinate as carbon source. The nitrogen removal rate was 87.5 mg NO3 (-)-N l(-1 )h(-1). Therefore, this strain is a potential aerobic denitrifier for the treatment of saline wastewater.
authors.affiliation: National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun Bei-er-tiao 1, Haidian District, P.O. Box 353, Beijing, 100190, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Guo
authors.forename: Xuemei
authors.initials: X
authors.lastname: Zhou
authors.forename: Yuguang
authors.initials: Y
authors.lastname: Li
authors.forename: Ke
authors.initials: K
authors.lastname: Li
authors.forename: Caixia
authors.initials: C
authors.lastname: Wang
authors.forename: Jianfei
authors.initials: J
authors.lastname: Liu
authors.forename: Daojiang
authors.initials: D
authors.lastname: Yan
authors.forename: Yilan
authors.initials: Y
authors.lastname: Liu
authors.forename: Dehui
authors.initials: D
authors.lastname: Yang
authors.forename: Jianmin
authors.initials: J
authors.lastname: Xing
mesh_terms: D000332:Aerobiosis; D002681:China; D058440:Denitrification / Q000235:genetics*; D020632:Halomonas / Q000145:classification / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism*; D058465:Nitrification / Q000235:genetics; D009584:Nitrogen / Q000032:analysis / Q000302:isolation & purification* / Q000378:metabolism; D012722:Sewage / Q000382:microbiology; D012965:Sodium Chloride
chemical_list: D012722:Sewage; D012965:Sodium Chloride; D009584:Nitrogen