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AD-1, an aerobic denitrifier, was isolated from activated sludge and identified as Pseudomonas stutzeri. AD-1 completely removed NO3– or NO2– and removed 99.5% of NH4+ during individual culturing in a broth medium with an initial nitrogen concentration of approximately 50 mg L−1. Results showed that larger amounts of nitrogen were removed through assimilation by the bacteria. And when NH4+ was used...
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