Abstract
Of the 29 potentially denitrifying organisms isolated from a denitrifying reactor (DNR) of a fertilizer company, two isolates; I-4 and I-5 were recognized as denitrifiers. Under aerobic conditions, with fusel oil as the carbon source, the organisms decreased nitrate from 1200 mg l−1 to 100 mg l−1 in 48 h. Optimal growth conditions for biological removal of nitrate were established in batch culture. The system was scaled up to 4-L and 50-L bioreactors under continuous culture conditions. Up to 95–100% nitrate removal was achieved in the 50-L bioreactor at a COD:NO3–N ratio of 3.45 with a retention time of 48 h. The isolates showed 1.5 fold higher denitrifying activity than reported previously.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
