Abstract
An aerobic benzene-degrading heterotrophic nitrifying strain Pseudomonas sp.BN5 was isolated from the well domesticated microbes. Growth and nitrification characteristics were investigated with the benzene as the sole carbon and energy source and the NH+4-N as nitrogen source under aerobic condition. It was demonstrated that the favorite C/N ratio, temperature and speed of Pseudomonas sp.BN5 was 10, 30°C and 180rpm, respectively. About 70.86% of ammonium and 100% of benzene was removed after 72 h of incubation at initial benzene and ammonium concentration of 52.37mg/L and 16.13mg/L, respectively. Only trace accumulation of nitrate was observed during the process.
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