TY - JOUR
T1 - Utilization of microbial fuel cells for the treatment of wastewater from a pig farm
AU - Estrada-Arriaga, Edson Baltazar
AU - García-Sánchez, Liliana
AU - Garzón-Zuñiga, Marco Antonio
AU - González-Rodríguez, José Gonzalo
N1 - Publisher Copyright:
© by PSP.
PY - 2015
Y1 - 2015
N2 - Pig farms generate wastewaters, which are difficult to treat since they contain high concentrations of organic matter, nutrients, and pathogens. The organic matter contained in the wastewaters works as an electron provider for the bacteria to generate energy. The possibility of generating electricity was studied using a single-chamber microbial fuel cells (MFC) fed, having swine wastewater as electron donors, and simultaneously reducing the organic load during the wastewater treatment. The results showed that the pig wastewater can be used to produce electricity using a MFC single-chamber, generating simultaneously removals of organic matter, nitrogen, and phosphorus (chemical oxygen demand 71.9%, ammoniacal nitrogen 29.2% and total phosphorus 15.1%). The maximum voltages reached in the MFC were between 63 mV and 218 mV. The higher power density was 256 mW/m2 for a current density of 4, 000 A/m2 (10 Ω). For an external resistance of 10 Ω, 100 Ω, and 1, 200 Ω, the coulombic efficiency was 39 %, 5.5%, and 0.9%, respectively. The sscanning electron microscope image and the elemental analysis showed a biofilm bacterial developed on the carbon fiber (anode), as well as inorganic salts precipitated during the treatment of pig farm wastewater by MFC.
AB - Pig farms generate wastewaters, which are difficult to treat since they contain high concentrations of organic matter, nutrients, and pathogens. The organic matter contained in the wastewaters works as an electron provider for the bacteria to generate energy. The possibility of generating electricity was studied using a single-chamber microbial fuel cells (MFC) fed, having swine wastewater as electron donors, and simultaneously reducing the organic load during the wastewater treatment. The results showed that the pig wastewater can be used to produce electricity using a MFC single-chamber, generating simultaneously removals of organic matter, nitrogen, and phosphorus (chemical oxygen demand 71.9%, ammoniacal nitrogen 29.2% and total phosphorus 15.1%). The maximum voltages reached in the MFC were between 63 mV and 218 mV. The higher power density was 256 mW/m2 for a current density of 4, 000 A/m2 (10 Ω). For an external resistance of 10 Ω, 100 Ω, and 1, 200 Ω, the coulombic efficiency was 39 %, 5.5%, and 0.9%, respectively. The sscanning electron microscope image and the elemental analysis showed a biofilm bacterial developed on the carbon fiber (anode), as well as inorganic salts precipitated during the treatment of pig farm wastewater by MFC.
KW - And current density
KW - Bioelectricity
KW - Microbial fuel cells
KW - Pig farm
KW - Power
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=84978807330&partnerID=8YFLogxK
M3 - Artículo
SN - 1018-4619
VL - 24
SP - 2512
EP - 2518
JO - Fresenius Environmental Bulletin
JF - Fresenius Environmental Bulletin
IS - 8
ER -