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Microbiome characterization of MFCs used for the treatment of swine manure

Conventional swine manure treatment is performed by anaerobic digestion, but nitrogen is not treated. Microbial Fuel Cells (MFCs) allow organic matter and nitrogen removal with concomitant electricity production. MFC microbiomes treating industrial wastewaters as swine manure have not been characterized. In this study, a multidisciplinary approach allowed microbiome relation with nutrient removal capacity and electricity production. Two different MFC configurations (C-1 and C-2) were used to treat swine manure. In C-1, the nitrification and denitrification processes took place in different compartments, while in C-2, simultaneous nitrification-denitrification occurred in the cathode. Clostridium disporicum and Geobacter sulfurreducens were identified in the anode compartments of both systems. C. disporicum was related to the degradation of complex organic matter compounds and G. sulfurreducens to electricity production. Different nitrifying bacteria populations were identified in both systems because of the different operational conditions. The highest microbial diversity was detected in cathode compartments of both configurations, including members of Bacteroidetes, Chloroflexiaceae and Proteobacteria. These communities allowed similar removal rates of organic matter (2.02-2.09kg CODm-3d-1) and nitrogen (0.11-0.16kgNm-3d-1) in both systems. However, they differed in the generation of electric energy (20 and 2mWm-3 in C-1 and C-2, respectively)

This research was financially supported by the Company Abengoa Water within the TEcoAgua project (CEN-20091028), the Spanish Government (CTQ2011-23632) and the Catalan Government (2014 FI-B 00093 and 2012 FI-B 00941)

© Journal of Hazardous Materials, 2015, vol. 288, p. 60-68

Elsevier

Author: Vilajeliu Pons, Anna
Puig Broch, Sebastià
Pous Rodríguez, Narcís
Salcedo Dávila, Inmaculada
Bañeras Vives, Lluís
Balaguer i Condom, Maria Dolors
Colprim Galceran, Jesús
Date: 2015 May 15
Abstract: Conventional swine manure treatment is performed by anaerobic digestion, but nitrogen is not treated. Microbial Fuel Cells (MFCs) allow organic matter and nitrogen removal with concomitant electricity production. MFC microbiomes treating industrial wastewaters as swine manure have not been characterized. In this study, a multidisciplinary approach allowed microbiome relation with nutrient removal capacity and electricity production. Two different MFC configurations (C-1 and C-2) were used to treat swine manure. In C-1, the nitrification and denitrification processes took place in different compartments, while in C-2, simultaneous nitrification-denitrification occurred in the cathode. Clostridium disporicum and Geobacter sulfurreducens were identified in the anode compartments of both systems. C. disporicum was related to the degradation of complex organic matter compounds and G. sulfurreducens to electricity production. Different nitrifying bacteria populations were identified in both systems because of the different operational conditions. The highest microbial diversity was detected in cathode compartments of both configurations, including members of Bacteroidetes, Chloroflexiaceae and Proteobacteria. These communities allowed similar removal rates of organic matter (2.02-2.09kg CODm-3d-1) and nitrogen (0.11-0.16kgNm-3d-1) in both systems. However, they differed in the generation of electric energy (20 and 2mWm-3 in C-1 and C-2, respectively)
This research was financially supported by the Company Abengoa Water within the TEcoAgua project (CEN-20091028), the Spanish Government (CTQ2011-23632) and the Catalan Government (2014 FI-B 00093 and 2012 FI-B 00941)
Format: application/pdf
ISSN: 0304-3894 (versió paper)
1873-3336 (versió electrònica)
Document access: http://hdl.handle.net/10256/11515
Language: eng
Publisher: Elsevier
Collection: MICINN/PN 2012-2014/CTQ2011-23632
AGAUR/2014 FI-B 00093
AGAUR/2012 FI-B 00941
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.jhazmat.2015.02.014
Articles publicats (D-EQATA)
Is part of: © Journal of Hazardous Materials, 2015, vol. 288, p. 60-68
Rights: Tots els drets reservats
Subject: Biofilms
Ecologia microbiana
Microbial ecology
Desnitrificació
Denitrification
Aigües residuals -- Depuració -- Desnitrificació
Sewage -- Purification -- Nitrogen removal
Energia de la biomassa
Biomass energy
Cel·la de combustible biològic
Microbial fuel cells
Title: Microbiome characterization of MFCs used for the treatment of swine manure
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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