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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1787| Bioelectrochemical System with a Proton Exchange Membrane for Wastewater Treatment | |
| RUBEN ALONSO CHACON CARRERA VIRGINIA HIDALINA COLLINS MARTINEZ | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| biohydrogen | |
| Microbial electrolysis cells (MECs) are bioelectrochemical devices where organic matter is oxidized to hydrogen through exoelectrogenic bacteria, this process is a new alternative to energy crisis and to mitigate climate change. Microorganisms are attached to the anode where the oxidation is carried out producing carbon dioxide (CO2), electrons (e-), and protons (H+), while at the cathode protons and electrons are chemically reduced to finally produced biohydrogen. This is not a spontaneous reaction; thus, the minimum required voltage is ≥ 0.2 V, which is substantially lower than the needed for conventional water electrolysis. MECs have some advantages over other biohydrogen processes from biomass: a higher conversion efficiency, high purity of gas, and have proved to be a robust technology able to treat a wide range of organic substrates, wastewater included. Most of the studies of MECs have reported double chamber designs, where the anode and cathode are separated by an ion exchange membrane. The importance of the membrane is to regulate the ionic flux between both chambers since low migration rates of ionic species could affect the pH balance in the system affecting the performance of the system. Nafion is a proton exchange membrane widely used to study MECs, however, there is little information about bipolar membranes (BPM) in these systems. In this study, a double-chambered MEC was constructed to evaluate the performance of the system using Nafion 117 as a proton exchange membrane, and a bipolar membrane (FUMASEP-FBM). The biofilm formation was monitored by cyclic voltammetry and open circuit voltage (OCV) while the electrochemical performance was characterized by polarization curves and power density curves. The kinetics of COD removal were evaluated over a period of 3 hours with a percentage of removal of 39%. | |
| 2017 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| Bioelectrochemical System with a Proton Exchange Membrane for Wastewater Treatment.pdf | 883.16 kB | Adobe PDF | Visualizar/Abrir |