@article{(Open Science Index):https://publications.waset.org/pdf/13327, title = {Denitrification of Wastewater Containing High Nitrate Using a Bioreactor System Packed by Microbial Cellulose}, author = {H. Godini and A. Rezaee and A. Jafari and S. H. Mirhousaini}, country = {}, institution = {}, abstract = {A Laboratory-scale packed bed reactor with microbial cellulose as the biofilm carrier was used to investigate the denitrification of high-strength nitrate wastewater with specific emphasis on the effect the nitrogen loading rate and hydraulic retention time. Ethanol was added as a carbon source for denitrification. As a result of this investigation, it was found that up to 500 mg/l feed nitrate concentration the present system is able to produce an effluent with nitrate content below 10 ppm at 3 h hydraulic retention time. The highest observed denitrification rate was 4.57 kg NO3-N/ (m3 .d) at a nitrate load of 5.64 kg NO3- N/(m3 .d), and removal efficiencies higher than 90% were obtained for loads up to 4.2 kg NO3-N/(m3 .d). A mass relation between COD consumed and NO3-N removed around 2.82 was observed. This continuous-flow bioreactor proved an efficient denitrification system with a relatively low retention time.}, journal = {International Journal of Environmental and Ecological Engineering}, volume = {4}, number = {2}, year = {2010}, pages = {81 - 85}, ee = {https://publications.waset.org/pdf/13327}, url = {https://publications.waset.org/vol/38}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 38, 2010}, }