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Heterotrophic nitrification and aerobic denitrification by a novel Halomonas campisalis. 2013

Yan Guo, and Xuemei Zhou, and Yuguang Li, and Ke Li, and Caixia Wang, and Jianfei Liu, and Daojiang Yan, and Yilan Liu, and Dehui Yang, and Jianmin Xing
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.

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.

UI MeSH Term Description Entries
D009584 Nitrogen An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
D002681 China A country spanning from central Asia to the Pacific Ocean. Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D000332 Aerobiosis Life or metabolic reactions occurring in an environment containing oxygen. Aerobioses
D012722 Sewage Refuse liquid or waste matter carried off by sewers. Sludge,Sludge Flocs
D012965 Sodium Chloride A ubiquitous sodium salt that is commonly used to season food. Sodium Chloride, (22)Na,Sodium Chloride, (24)NaCl
D058440 Denitrification Nitrate reduction process generally mediated by anaerobic bacteria by which nitrogen available to plants is converted to a gaseous form and lost from the soil or water column. It is a part of the nitrogen cycle. Denitrifications
D058465 Nitrification A process facilitated by specialized bacteria involving the oxidations of ammonium to nitrite and nitrite to nitrate. Aerobic Ammonia Oxidation,Nitrite Oxidation,Aerobic Ammonia Oxidations,Ammonia Oxidation, Aerobic,Nitrifications,Nitrite Oxidations,Oxidation, Aerobic Ammonia,Oxidation, Nitrite
D020632 Halomonas A genus of gram-negative, rod-shaped or pleomorphic bacteria which are halotolerant. Members of this genus are capable of growth in sodium chloride concentrations of up to 20% or more. (From Bergey's Manual of Determinative Bacteriology, 9th ed) Halomonas elongata

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