Development of an Osmium Redox Polymer Mediated Bioanode and Examination of its Performance in Gluconobacter oxydans Based Microbial Fuel Cell
Sema Aslan, Peter Ó Conghaile, Dónal Leech, Lo Gorton +2
AI summary
70% confidenceA novel bioanode was developed by combining Gluconobacter oxydans cells with an osmium redox polymer and a glassy carbon paste electrode, and its performance was examined in a microbial fuel cell.
Generated by MESSAI extraction pipeline · review against source PDF
Representative MFC — matched on the paper’s system type only, not its reactor or geometry.
Open in lab for full controls, parameter editing, and template overlays.
Open in lab →What they did
- System
- MFC
What worked
No outcome metrics extracted yet.
Abstract
Abstract Gluconobacter oxydans ( G. oxydans ) cells together with an osmium redox polymer (ORP) [Osmium (2,2’‐bipyridine)2(poly‐vinylimidazole)10Cl]Cl were combined with a glassy carbon paste electrode (GCPE) to form a bioanode for a microbial fuel cell (MFC) based on G. oxydans . Although there are G.oxydans / ORP combined bioanode in the literature, as far as it is known, this system is the first one where G.oxydans /ORP bioanode is combined with a cathode and a MFC is formed. After the optimization of experimental parameters, analytical characteristics of ORP/ G. oxydans /GCPE bioanode were investigated. ORP/ G. oxydans /GCPE showed two linear ranges for ethanol substrate as 1.0–30 mM (R 2 =0.902) and 30–500 mM (R 2 =0.997) and analytical range as 1.0–1000 mM. Limit of detection (3.0 s/m) and limit of quantification (10 s/m) values were calculated as 1.29 mM and 4.30 mM respectively where the RSD value was 1.16 % for n=5. Combining the developed bioanode in the presence of 5.0 mM K 3 Fe(CN) 6 mediator with a Pt wire cathode a double compartment MFC was obtained via a salt bridge. G. oxydans /GCPE bioanode based MFC had maximum power density of 0.133 μW cm −2 (at 33.5 mV), maximum current density as 8.73 μA cm −2 and OCP value of 156 mV. On the other hand, ORP/ G. oxydans /GCPE based MFC showed maximum power density as 0.26 μW cm −2 (at 46.8 mV), maximum current density as 15.079 μA cm ‐2 and OCP value of 176 mV.
Key findings
- The bioanode showed two linear ranges for ethanol substrate, with a limit of detection of 1.29 mM and a limit of quantification of 4.30 mM.
- The bioanode had a high analytical range of 1.0-1000 mM and a low RSD value of 1.16% for n=5.
- The combination of the bioanode with a cathode formed a microbial fuel cell, which is a new application of this system.
Keywords
Identifiers
- Journal
- Electroanalysis
- Year
- 2017