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Autotrophic nitrite removal in the cathode of microbial fuel cells.
Bioresour Technol. 2011 Mar; 102(6):4462-7.BT

Abstract

Nitrification to nitrite (nitritation process) followed by reduction to dinitrogen gas decreases the energy demand and the carbon requirements of the overall process of nitrogen removal. This work studies autotrophic nitrite removal in the cathode of microbial fuel cells (MFCs). Special attention was paid to determining whether nitrite is used as the electron acceptor by exoelectrogenic bacteria (biologic reaction) or by graphite electrodes (abiotic reaction). The results demonstrated that, after a nitrate pulse at the cathode, nitrite was initially accumulated; subsequently, nitrite was removed. Nitrite and nitrate can be used interchangeably as an electron acceptor by exoelectrogenic bacteria for nitrogen reduction from wastewater while producing bioelectricity. However, if oxygen is present in the cathode chamber, nitrite is oxidised via biological or electrochemical processes. The identification of a dominant bacterial member similar to Oligotropha carboxidovorans confirms that autotrophic denitrification is the main metabolism mechanism in the cathode of an MFC.

Authors+Show Affiliations

Laboratory of Chemical and Environmental Engineering (LEQUiA), Institute of the Environment, University of Girona, Campus Montilivi s/n, Facultat de Ciències, E-17071 Girona, Spain. sebastia@lequia.udg.catNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21262566

Citation

Puig, Sebastià, et al. "Autotrophic Nitrite Removal in the Cathode of Microbial Fuel Cells." Bioresource Technology, vol. 102, no. 6, 2011, pp. 4462-7.
Puig S, Serra M, Vilar-Sanz A, et al. Autotrophic nitrite removal in the cathode of microbial fuel cells. Bioresour Technol. 2011;102(6):4462-7.
Puig, S., Serra, M., Vilar-Sanz, A., Cabré, M., Bañeras, L., Colprim, J., & Balaguer, M. D. (2011). Autotrophic nitrite removal in the cathode of microbial fuel cells. Bioresource Technology, 102(6), 4462-7. https://doi.org/10.1016/j.biortech.2010.12.100
Puig S, et al. Autotrophic Nitrite Removal in the Cathode of Microbial Fuel Cells. Bioresour Technol. 2011;102(6):4462-7. PubMed PMID: 21262566.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Autotrophic nitrite removal in the cathode of microbial fuel cells. AU - Puig,Sebastià, AU - Serra,Marc, AU - Vilar-Sanz,Ariadna, AU - Cabré,Marina, AU - Bañeras,Lluís, AU - Colprim,Jesús, AU - Balaguer,M Dolors, Y1 - 2011/01/01/ PY - 2010/09/14/received PY - 2010/12/24/revised PY - 2010/12/27/accepted PY - 2011/1/26/entrez PY - 2011/1/26/pubmed PY - 2011/5/24/medline SP - 4462 EP - 7 JF - Bioresource technology JO - Bioresour Technol VL - 102 IS - 6 N2 - Nitrification to nitrite (nitritation process) followed by reduction to dinitrogen gas decreases the energy demand and the carbon requirements of the overall process of nitrogen removal. This work studies autotrophic nitrite removal in the cathode of microbial fuel cells (MFCs). Special attention was paid to determining whether nitrite is used as the electron acceptor by exoelectrogenic bacteria (biologic reaction) or by graphite electrodes (abiotic reaction). The results demonstrated that, after a nitrate pulse at the cathode, nitrite was initially accumulated; subsequently, nitrite was removed. Nitrite and nitrate can be used interchangeably as an electron acceptor by exoelectrogenic bacteria for nitrogen reduction from wastewater while producing bioelectricity. However, if oxygen is present in the cathode chamber, nitrite is oxidised via biological or electrochemical processes. The identification of a dominant bacterial member similar to Oligotropha carboxidovorans confirms that autotrophic denitrification is the main metabolism mechanism in the cathode of an MFC. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/21262566/Autotrophic_nitrite_removal_in_the_cathode_of_microbial_fuel_cells_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(10)02090-0 DB - PRIME DP - Unbound Medicine ER -