Simultaneous removal of organics and bioenergy production by microbial fuel cell: modeling approach
Abstract
In this study, membrane less double chambered microbial fuel cell has been used for the simultaneous electricity generation and organics removal from glucose and glutamic acid (mole ratio 1:1) based synthetic solution in the presence of municipal wastewater activated sludge-based microbes using graphite as an electrode. A central composite design technique has been employed to optimize the experimental conditions using design expert software for modeling input–output model as surface function of various input parameters like initial COD, anodic pH, and run time for voltage and current density generation. The predicted model suggests that maximum voltage and current density generation of ∼14.8 mV and ∼41.11 μA/m2, respectively are obtained at COD: 1500 mg/L, pH: 7, run time: 7 days. Further, methylene blue is used as mediator for voltage and current density production at optimum condition. Experimental result depicts the substantial role of mediator concentration and showing maximum current and voltage production, approximately 10 times higher than that without meditator under similar conditions. In addition to bioenergy production, values of BOD and COD in the wastewater simulant are found to be reduced after each run which exists below the permissible limits. The developed model equations give better prediction on the voltage and current density generation which lies within the error limits of −12 to +12% and −2 to 14%, respectively to their corresponding experimental values. Overall, the process can generate simultaneously bioenergy along with wastewater treatment and the empirical model gives better prediction with experimental values.
Funding source: MMMUT
Funding source: TEQIP-III
Acknowledgments
Dr. Ravi Shankar, Dr Prateek Khare, Mr. Shambhoo Sharan and Mr. Ratnesh Kumar Patel are also thankful to IIT Roorkee for providing characterization facility.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: Dr. Prateek Khare and Dr. Ravi Shankar are thankful to MMMUT, Gorakhpur for providing funding support from TEQIP-III under Research Initiation grant scheme to carry out this work.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Artikel in diesem Heft
- Frontmatter
- Articles
- The strategy developed for high conversion and the multiplicity problems of biochemical reaction in a real CSTR with Cholette’s model
- Investigation on gas induction of liquid–gas ejector in jet loop reactor
- Design and simulation of a novel FOIMC-PD/P double-loop control structure for CSTRs and bioreactors
- Simulation of flow field characteristics in scheelite leaching tank with H2SO4–H3PO4
- Hydraulic characteristics of integrated settler based biofilm reactor as onsite sanitation system
- Potential of a mixed culture of microalgae for accumulation of beta-carotene under different stress conditions
- Simulation of heat transfer characteristics of tire particles in rotary kiln reactor
- Simultaneous removal of organics and bioenergy production by microbial fuel cell: modeling approach
- Optimization of slanted grooved micromixer with a serpentine channel at a lower Reynolds number
Artikel in diesem Heft
- Frontmatter
- Articles
- The strategy developed for high conversion and the multiplicity problems of biochemical reaction in a real CSTR with Cholette’s model
- Investigation on gas induction of liquid–gas ejector in jet loop reactor
- Design and simulation of a novel FOIMC-PD/P double-loop control structure for CSTRs and bioreactors
- Simulation of flow field characteristics in scheelite leaching tank with H2SO4–H3PO4
- Hydraulic characteristics of integrated settler based biofilm reactor as onsite sanitation system
- Potential of a mixed culture of microalgae for accumulation of beta-carotene under different stress conditions
- Simulation of heat transfer characteristics of tire particles in rotary kiln reactor
- Simultaneous removal of organics and bioenergy production by microbial fuel cell: modeling approach
- Optimization of slanted grooved micromixer with a serpentine channel at a lower Reynolds number