External resistance acclimation regulates bio-anode: new perspective from biofilm structure and its correlation with anode performance
External resistance is important for the anode and cell performance. However, little attentions were paid on the effect of external resistance on the variation of biofilm structure. Here, we used external resistance ranged from 4000 to 500 Ω for anodic acclimation to investigate the correlation betw...
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| Veröffentlicht in: | Bioprocess and biosystems engineering 2022-02, Vol.45 (2), p.269-277 |
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| creator | Yang, Jiawei Cheng, Shaoan |
| description | External resistance is important for the anode and cell performance. However, little attentions were paid on the effect of external resistance on the variation of biofilm structure. Here, we used external resistance ranged from 4000 to 500 Ω for anodic acclimation to investigate the correlation between anode performance and biofilm structure. With the reduce of external resistance, the maximum current density of anode increased from 1.0 to 3.4 A/m
2
, which was resulted from a comprehensive effect of reduced charge transfer resistance and increased diffusion resistance. Biological analysis showed that with the reduce of external resistance, biomass and extracellular polymeric substances content increased by 109 and 286%, cell viability increased by 22.7%, which contributed to the reduced charge transfer resistance. But the porosity of anodic biofilm decreased by 27.8%, which led to an increased diffusion resistance of H
+
. This work provided a clear correlation between the electrochemical performance and biofilm structure. |
| doi_str_mv | 10.1007/s00449-021-02658-9 |
| format | Article |
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2
, which was resulted from a comprehensive effect of reduced charge transfer resistance and increased diffusion resistance. Biological analysis showed that with the reduce of external resistance, biomass and extracellular polymeric substances content increased by 109 and 286%, cell viability increased by 22.7%, which contributed to the reduced charge transfer resistance. But the porosity of anodic biofilm decreased by 27.8%, which led to an increased diffusion resistance of H
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2
, which was resulted from a comprehensive effect of reduced charge transfer resistance and increased diffusion resistance. Biological analysis showed that with the reduce of external resistance, biomass and extracellular polymeric substances content increased by 109 and 286%, cell viability increased by 22.7%, which contributed to the reduced charge transfer resistance. But the porosity of anodic biofilm decreased by 27.8%, which led to an increased diffusion resistance of H
+
. 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2
, which was resulted from a comprehensive effect of reduced charge transfer resistance and increased diffusion resistance. Biological analysis showed that with the reduce of external resistance, biomass and extracellular polymeric substances content increased by 109 and 286%, cell viability increased by 22.7%, which contributed to the reduced charge transfer resistance. But the porosity of anodic biofilm decreased by 27.8%, which led to an increased diffusion resistance of H
+
. This work provided a clear correlation between the electrochemical performance and biofilm structure.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>34689231</pmid><doi>10.1007/s00449-021-02658-9</doi><tpages>9</tpages></addata></record> |
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| subjects | Acclimation Acclimatization Anode effect Bioelectric Energy Sources Biofilms Biological analysis Biomass Biotechnology Cell viability Charge transfer Chemistry Chemistry and Materials Science Correlation Electrochemical analysis Electrochemistry Electrodes Environmental Engineering/Biotechnology Extracellular polymers Food Science Industrial and Production Engineering Industrial Chemistry/Chemical Engineering Porosity Research Paper |
| title | External resistance acclimation regulates bio-anode: new perspective from biofilm structure and its correlation with anode performance |
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