Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1016/j.elecom.2014.10.011 |
| Titel (primär) | Extracellular electron transfer of biocathodes: Revealing the potentials for nitrate and nitrite reduction of denitrifying microbiomes dominated by Thiobacillus sp. |
| Autor | Pous, N.; Koch, C.; Colprim, J.; Puig, S.; Harnisch, F.
|
| Quelle | Electrochemistry Communications |
| Erscheinungsjahr | 2014 |
| Department | UMB |
| Band/Volume | 49 |
| Seite von | 93 |
| Seite bis | 97 |
| Sprache | englisch |
| Keywords | Autotrophic biological denitrification; Bioelectrochemical system; Cyclic voltammetry; Microbial electrochemical technology; Nitrate reductase; Nitrogen removal |
| UFZ Querschnittsthemen | RU3; |
| Abstract | The use of biocathodes in bioelectrochemical systems (BES) for the removal of nitrate in wastewater has become a vital field of research. However, the elucidation of the underlying extracellular electron transfer (EET) fundamentals of denitrifying biocathodes is still lacking, but required for a deeper BES understanding and engineering. This study reports for the first time on the thermodynamics of microbial cathodes for nitrate and nitrite reductions using microbial microcosms isolated from a running denitrifying BES. Cyclic voltammetry showed that nitrate and nitrite reduction proceed at − 0.30 V, and − 0.70 V vs. Ag/AgCl, respectively, by surface associated EET sites. The biocathodes were predominantly covered by Thiobacillus sp. contributing with a nitrate reductase (narG) to the major function of the microcosms. In conclusion, the EET characteristics of denitrifying biocathodes are demonstrated for the first time. |
| Pous, N., Koch, C., Colprim, J., Puig, S., Harnisch, F. (2014): Extracellular electron transfer of biocathodes: Revealing the potentials for nitrate and nitrite reduction of denitrifying microbiomes dominated by Thiobacillus sp. Electrochem. Commun. 49 , 93 - 97 10.1016/j.elecom.2014.10.011 |
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