title: Nitrogen Removal Characteristics ofPseudomonas putidaY-9 Capable of Heterotrophic Nitrification and Aerobic Denitrification at Low Temperature.
abstract: The cold-adapted bacteriumPseudomonas putidaY-9 was investigated and exhibited excellent capability for nitrogen removal at 15°C. The strain capable of heterotrophic nitrification and aerobic denitrification could efficiently remove ammonium, nitrate, and nitrite at an average removal rate of 2.85 mg, 1.60 mg, and 1.83 mg NL-1h-1, respectively. Strain Y-9 performed nitrification in preference to denitrification when ammonium and nitrate or ammonium and nitrite coexisted in the solution. Meantime, the presence of nitrate had no effect on the ammonium removal rate of strain Y-9, and yet the presence of high concentration of nitrite would inhibit the cell growth and decrease the nitrification rate. The experimental results indicate thatP. putidaY-9 has potential application for the treatment of wastewater containing high concentrations of ammonium along with its oxidation products at low temperature.
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Yi
authors.identifier: 0000-0003-1355-0055
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Tengxia
authors.initials: T
authors.lastname: He
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Zhenlun
authors.identifier: 0000-0002-8435-4150
authors.initials: Z
authors.lastname: Li
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Ye
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Enyu
authors.initials: E
authors.lastname: Xie
authors.affiliation: Chongqing Key Laboratory of Soil Multiscale Interfacial Process, Southwest University, Chongqing 400716, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000332:Aerobiosis; D064751:Ammonium Compounds / Q000737:chemistry; D058440:Denitrification; D009566:Nitrates / Q000737:chemistry; D058465:Nitrification; D009573:Nitrites / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D016958:Pseudomonas putida / Q000378:metabolism*; D013696:Temperature; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification / Q000379:methods
chemical_list: D064751:Ammonium Compounds; D009566:Nitrates; D009573:Nitrites; D009584:Nitrogen; D010100:Oxygen; D062065:Wastewater; D014874:Water Pollutants, Chemical