title: Nitrate removal efficiency of bacterial consortium (Pseudomonas sp. KW1 and Bacillus sp. YW4) in synthetic nitrate-rich water.
abstract: The efficiency of bacterial isolates to reduce nitrate from synthetic nitrate-rich water was tested using a batch scale process. Two efficient nitrate reducing bacterial species were isolated from water samples collected from Kodaikanal and Yercaud lakes. Bacterial analysis of the samples revealed the presence of nitrate reducing bacteria belonging to the genera Pseudomonas, Bacillus, Micrococcus and Alcaligenes. Among the isolates, the consortium of Pseudomonas sp. KW1 and Bacillus sp. YW4 was found to be efficient in nitrate reduction. Influences of various carbon sources, incubation temperature and pH on nitrate reduction from synthetic wastewater were also studied. The results showed a rapid and efficient process of nitrate removal (99.4%) from synthetic wastewater supplemented with starch (1%), inoculated by bacterial consortium (Pseudomonas sp. KW1 and Bacillus sp. YW4) at incubation temperature of 30 degrees C at pH 7. This observation has led to the conclusion that the bacterial consortium was responsible for nitrate removal from synthetic nitrate-rich wastewater.
authors.affiliation: Division of Civil and Environmental Engineering, Korea Maritime University, Busan, South Korea.
authors.forename: Sundaram
authors.initials: S
authors.lastname: Rajakumar
authors.forename: Pudukadu Munusamy
authors.initials: PM
authors.lastname: Ayyasamy
authors.forename: Kuppusamy
authors.initials: K
authors.lastname: Shanthi
authors.forename: Palanisami
authors.initials: P
authors.lastname: Thavamani
authors.forename: Palanivel
authors.initials: P
authors.lastname: Velmurugan
authors.forename: Young Chae
authors.initials: YC
authors.lastname: Song
authors.forename: Perumalsamy
authors.initials: P
authors.lastname: Lakshmanaperumalsamy
mesh_terms: D001407:Bacillus / Q000378:metabolism*; D001673:Biodegradation, Environmental; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000378:metabolism*; D011549:Pseudomonas / Q000378:metabolism*; D014873:Water Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D009566:Nitrates; D014873:Water Pollutants