Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/10256/10827

Extracellular electron transfer of biocathodes: Revealing the potentials for nitrate and nitrite reduction of denitrifying microbiomes dominated by Thiobacillus sp.
Pous Rodríguez, Narcís; Koch, Christin; Colprim Galceran, Jesús; Puig Broch, Sebastià; Harnisch, Falk
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
The authors acknowledge the scientific assistance of Prof. M.D. Balaguer. F.H. acknowledges support by the BMBF (Research Award "Next generation biotechnological processes-Biotechnology 2020+") and the Helmholtz Association (Young Investigators Group). This work was supported by the Helmholtz Association within the Research Programme Terrestrial Environment and by the Spanish Government (CTQ2011-23632). N.P. was supported by the Catalan Government (2012FI-B00941) and the University of Girona (MOB2014-ref22)
Desnitrificació
Denitrification
Bioelectroquímica
Bioelectrochemistry
Biotecnologia microbiana
Microbial biotechnology
Nitrogen
Tots els drets reservats
Artículo
info:eu-repo/semantics/acceptedVersion
Elsevier
         

Mostrar el registro completo del ítem

Documentos relacionados

Otros documentos del mismo autor/a

Pous Rodríguez, Narcís; Koch, Christin; Vila Rovira, Albert; Balaguer i Condom, Maria Dolors; Colprim Galceran, Jesús; Muehlenberg, Jana; Mueller, Simone; Harnisch, Falk; Puig Broch, Sebastià
Pous Rodríguez, Narcís; Puig Broch, Sebastià; Balaguer i Condom, Maria Dolors; Colprim Galceran, Jesús
Pous Rodríguez, Narcís; Puig Broch, Sebastià; Coma Bech, Marta; Balaguer i Condom, Maria Dolors; Colprim Galceran, Jesús
Pous Rodríguez, Narcís; Puig Broch, Sebastià; Balaguer i Condom, Maria Dolors; Colprim Galceran, Jesús