Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4997590 | Bioresource Technology | 2017 | 17 Pages |
Abstract
Huge amount of aging biogas slurry is in urgent need to be treated properly. However, due to high NH3-N concentration and low C/N ratio, this aging biogas slurry is refractory for traditional methods. Its denitrification has become a big challenge. In this paper, photosynthetic bacteria (PSB) were employed to handle this problem. The results showed denitrification of aging biogas slurry by PSB treatment was promising. The highest removal efficiency of NH3-N reached 99.75%, much higher than all other treatments. The removal of NH3-N followed pseudo zero order reaction under dark-aerobic condition. The better inoculation rate for NH3-N removal was 30%; and aerobic condition was more beneficial for NH3-N removal than anaerobic condition because of different metabolic pathways.
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Authors
Anqi Yang, Guangming Zhang, Guang Yang, Hangyao Wang, Fan Meng, Hongchen Wang, Meng Peng,