| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7073377 | Bioresource Technology | 2015 | 6 Pages |
Abstract
The effects of electro-stimulation on heterotrophic denitrifying bacterial activity and nitrate removal were investigated using a bench-scale bio-electrochemical reactor in this study. Results showed that the maximum nitrate removal efficiency was 100% at the optimum current density of 200Â mA/m2, at which low nitrite production and high ATP aggregate level were obtained. The activity of denitrifying bacteria was highest at the range densities of 200-250Â mA/m2, although the terminative pH increased to 8.62 at 200Â mA/m2 and 9.63 at 250Â mA/m2. This demonstrates that suitable current densities could improve the activity of denitrifying bacteria. Therefore, this study provides a number of useful information to improve the bio-electrochemical reactor designs and promote the removal efficiency of pollutants.
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Authors
Hengyuan Liu, Shuang Tong, Nan Chen, Ying Liu, Chuanping Feng, Qili Hu,