| Title |
Microbial fuel cell based on Ensifer Meliloti / |
| Authors |
Bendinskaitė, Sigita ; Bružaitė, Ingrida ; Rožėnė, Justė ; Mockaitis, Tomas ; Zinovičius, Antanas ; Morkvėnaitė-Vilkončienė, Inga ; Ramanavičienė, Almira ; Ramanavičius, Arūnas |
| DOI |
10.1149/1945-7111/ad8037 |
| Full Text |
|
| Is Part of |
Journal of the electrochemical society.. Pennington, NJ : The Electrochemical Society. 2024, vol. 171, iss. 10, art. no. 105501, p. 1-8.. ISSN 0013-4651. eISSN 1945-7111 |
| Keywords [eng] |
microbial fuel cell ; electrocatalysis ; bioelectrochemistry ; biofuel cell ; redox mediator ; sinorhizobium meliloti bacteria ; cyclic voltammograms |
| Abstract [eng] |
The world’s growing energy crisis demands renewable energy sources. This issue can be solved using microbial fuel cells (MFCs). MFCs are biocatalytic systems which convert chemical energy into electrical energy, thereby reducing pollution from hazardous chemical compounds. However, during the development of MFCs, one of the most significant challenges is finding and assessment of microorganisms that generate sufficient redox potential through metabolic and catalytic processes. In this research, we have used Ensifer meliloti (E. meliloti) bacteria to design MFCs based on consecutive action of two redox mediators (9,10 - phenanthrenequinone (PQ) and potassium ferricyanide), which transferred charge between E. meliloti bacteria and graphite rod electrode. A viability study of E. meliloti culture showed that PQ significantly inhibits the growth of bacteria at 0.036 mM. Cyclic voltammograms were registered in the presence of 20 mM of potassium ferricyanide and different concentrations (0.036 and 0.071 mM, 0.11 mM, 0.14 mM, 0.172 mM, 0.32 mM) of PQ. Four days of lasting assessment of the microbial fuel cells in two-electrode systems showed that the maximal open circuit potential during the experiment raised from 174.9 to 234.6 mV. Power increased from 0.392 to 0.741 mW m −2 . |
| Published |
Pennington, NJ : The Electrochemical Society |
| Type |
Journal article |
| Language |
English |
| Publication date |
2024 |
| CC license |
|
