Application potential of a newly isolated indigenous aerobic denitrifier for nitrate and ammonium removal of eutrophic lake water

• Published in: Bioresource technology Vol. 142; pp. 45 - 51
• Main Authors: Guo, Liyun, Chen, Qiankun, Fang, Fei, Hu, Zhixin, Wu, Jun, Miao, Aijun, Xiao, Lin, Chen, Xiaofeng, Yang, Liuyan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.08.2013; Elsevier
• Subjects: acclimation; Accumulation; Aerobiosis; Ammonium Compounds - isolation & purification; ammonium nitrate; Biological and medical sciences; China; denitrification; Eutrophic lakes; Eutrophication; Fresh Water - chemistry; Freshwater; Fundamental and applied biological sciences. Psychology; Heterotrophic nitrification–aerobic denitrification; Lake Taihu; Lakes; Nitrates; Nitrates - isolation & purification; nitrites; nitrogen; Nitrogen removal; Phylogeny; Pseudomonas; Pseudomonas stutzeri; Pseudomonas stutzeri - classification; Pseudomonas stutzeri - metabolism; Quality; Strain; Water quality; Asia; China; China, People's Rep., Tai Hu L; China, People's Rep; Nitrogen removal; Heterotrophic nitrification–aerobic denitrification; Eutrophication; Lake Taihu; Microbial activity; Ammonium; Heterotrophy; Nitrates; Aerobe; Nitrogen; Heterotrophic nitrification-aerobic denitrification; Nitrification; Denitrification; Autochthonous; Denitrogenation
• DOI: 10.1016/j.biortech.2013.05.021
• ISSN: 0960-8524; 1873-2976

•We investigated the bioremediation potential of an aerobic denitrifier.•The strain was indigenous in the eutrophic lake without climate problem.•It could remove nitrate and ammonium simultaneously in the lake water samples.•Via adding this strain, the water qualities ameliorated from Grade V to Grade II. The aim of this work was to evaluate the utilization potential of a newly isolated indigenous aerobic denitrifier, Pseudomonas stutzeri strain T1, for nitrogen removal from the eutrophic Lake Taihu in China. The strain was capable of conducting heterotrophic nitrification–aerobic denitrification and had both excellent nitrate and ammonium removal without nitrite build-up. The characteristics of P. stutzeri strain T1 were studied under different cultural conditions. Furthermore, under the optimized cultivation conditions, strain T1 was added into the water samples from Lake Taihu, the ammonium and nitrate removal rates of the strain reached to 60% and 75%, respectively. Via adding this strain, the water qualities of the sample ameliorated from Grade V to Grade II. Thus, the strain T1 should be an useful biological tool to remediate eutrophic lakes and do not meet acclimation problems.