التفاصيل البيبلوغرافية
| العنوان: |
Anodic ammonia oxidation to nitrogen gas catalyzed by mixed biofilms in bioelectrochemical systems. |
| المؤلفون: |
Guoqiang Zhan1 zhangq@cib.ac.cn, Lixia Zhang1, Yong Tao1, Yujian Wang1, Xiaoyu Zhu1, Daping Li1,2 lidp@cib.ac.cn |
| المصدر: |
Electrochimica Acta. Jul2014, Vol. 135, p345-350. 6p. |
| مصطلحات موضوعية: |
*OXIDATION of ammonia, *BIOFILMS, *BIOELECTROCHEMISTRY, *NITROGEN removal (Water purification), *CYCLIC voltammetry, *RIBOSOMAL RNA |
| مستخلص: |
In this paper we report ammonia oxidation to nitrogen gas using microbes as biocatalyst on the anode, with polarized electrode (+600 mV vs. Ag/AgCl) as electron acceptor. In batch experiments, the maximal rate of ammonia-N oxidation by the mixed culture was ~ 60 mg L-1 d-1, and nitrogen gas was the main products in anode compartment. Cyclic voltammetry for testing the electroactivity of the anodic biofilms revealed that an oxidation peak appeared at +600 mV (vs. Ag/AgCl), whereas the electrode without biofilms didn't appear oxidation peak, indicating that the bioanode had good electroactivities for ammonia oxidation. Microbial community analysis of 16S rRNA genes based on high throughput sequencing indicated that the combination of the dominant genera of Nitrosomonas , Comamonas and Paracocus could be important for the electron transfer from ammonia oxidation to anode. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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