شماره ركورد كنفرانس :
3256
عنوان مقاله :
Electrochemical impedance study on methyl orange and methyl red as power enhancing electron mediators in glucose fed microbial fuel cell
Author/Authors :
Mir Ghasem Hosseini Electrochemistry Research Laboratory - Department of Physical Chemistry - Faculty of Chemistry - University of Tabriz , Iraj Ahadzadeh Electrochemistry Research Laboratory - Department of Physical Chemistry - Faculty of Chemistry - University of Tabriz , Mehdi Abdolmaleki Electrochemistry Research Laboratory - Department of Physical Chemistry - Faculty of Chemistry - University of Tabriz
كليدواژه :
Microbial fuel cell , Biofilms , Membrane , Electrochemical impedance spectroscopy , electron mediator
عنوان كنفرانس :
ششمين سمينار پيل سوختي ايران
چكيده لاتين :
Methyl orange and methyl red are studied as electron mediators in a glucose-fed microbial fuel cell. Maximum output power levels of the cell are about 106 W.cm-2 in the absence of any added mediator, 164 W.cm-2 and 207 W.cm-2 in the presence of 1 mM of methyl orange and 1 mM of methyl red in the anolyte, respectively, normalized to anode geometric surface area. Also addition of these organic mediators increases the open circuit potential and short circuit current of the cell from 425 mV and 1.12 mA.cm-2 to 512 mV and 1.51 mA.cm-2 for methyl orange and 585 mV and 1.51 mA.cm-2 for methyl red. Impedance measurements are performed for the microbial fuel cell in a two electrode configuration. From impedance spectra it is found that the main factor resulting in an increased power level of the cell is the decrease in the anodic charge transfer resistance
