Title of article :
Photoautotrophic microalgae Scenedesmus obliquus attached on a cathode as oxygen producers for microbial fuel cell (MFC) operation
Author/Authors :
Kakarla، نويسنده , , Ramesh and Min، نويسنده , , Booki، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
9
From page :
10275
To page :
10283
Abstract :
Photoautotrophic algae Scenedismus obliquus could attach on the surface of a cathode electrode and produced oxygen for electricity generation in microbial fuel cell (MFC). Oxygen concentration by algae aeration in the cathode chamber increased from 0 to 15.7 mg/l within 12-h, and a voltage generation of 0.47 ± 0.03 V was obtained with 1000 Ω external resistance. In polarization test, MFC with algal aeration exhibited the maximum power density of 153 mW/m2, which was 32% higher than the value (116 mW/m2) with mechanical aeration at oxygen concentration of 5.9 mg/l. The internal resistance of MFC with algal aeration decreased in ohmic resistance (5.9–5.2 Ω) and charge transfer resistance (9.6–7.2 Ω) over 72-h operation. Cyclic voltammetry of cathode during algal aeration revealed higher reduction current of −9.3 mA compared to mechanical aeration (−4.7 mA).
Keywords :
Mechanical aeration , Dissolved oxygen , Microbial fuel cell , Photoautotrophic aeration , Scenedesmus obliquus , Cell potential
Journal title :
International Journal of Hydrogen Energy
Serial Year :
2014
Journal title :
International Journal of Hydrogen Energy
Record number :
1868864
Link To Document :
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