Chemometrical assessment of the electrical parameters obtained by long-term operating freshwater sediment microbial fuel cells

Mitov, Mario; Bardarov, Ivo; Mandjukov, Petko; Hubenova, Yolina

doi:10.1016/j.bioelechem.2015.05.017

Cited by 38 publications

(13 citation statements)

References 41 publications

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“…However, Ryckelynck et al [32] attributed the voltage generation without lag phases to the abiotic oxidation of inorganic electron donors at the anode. Also, Mitov et al [33] showed that during long-term SMFC operation (i.e., after reaching a steady-state), the evaluated parameters (open circuit voltage, power density, current density, and internal resistance) tend to have high repeatability and reproducibility.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Electron Transfer Mechanisms during a Long-Term Sediment Microbial Fuel Cell Operation

2019

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The decentralized production of bioelectricity as well as the bioremediation of contaminated sediments might be achieved by the incorporation of an anode into anaerobic sediments and a cathode suspended in the water column. In this context, a sediment microbial fuel cell microcosm was carried out using different configurations of electrodes and types of materials (carbon and stainless steel). The results showed a long-term continuous production of electricity (>300 days), with a maximum voltage of approximately 100 mV reached after ~30 days of operation. A twofold increase of voltage was noticed with a twofold increase of surface area (~30 mV to ~60 mV vs. 40 cm2 to 80 cm2), while a threefold increase was obtained after the substitution of a carbon anode by one of stainless steel (~20 mV to ~65 mV vs. 40 cm2 to 812 cm2). Cyclic voltammetry was used to evaluate sediment bacteria electroactivity and to determine the kinetic parameters of redox reactions. The voltammetric results showed that redox processes were limited by the diffusion step and corresponded to a quasi-reversible electron charge transfer. These results are encouraging and give important information for the further optimization of sediment microbial fuel cell performance towards the long-term operation of sediment microbial fuel cell devices.

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Section: Discussionmentioning

confidence: 99%

Assessment of Electron Transfer Mechanisms during a Long-Term Sediment Microbial Fuel Cell Operation

2019

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“…Furthermore, as individual SMFCs produce little electricity [21], their operation in stack with different configurations (series and parallel mode) was also examined. Some of the previous studies claimed that SMFCs cannot be stacked in series connection as the electrodes are located in the same electrolyte solution [17,22,23], thus other approaches were suggested including power management systems to increase power output of SMFCs [10,14,23,24]. However, our hypothesis was that increase in voltage in series configuration would be possible by designing an appropriate system.…”

Section: Introductionmentioning

confidence: 85%

The effect of number and configuration of sediment microbial fuel cells on their performance in an open channel architecture

Abazarian

Gheshlaghi

Mahdavi

2016

Journal of Power Sources

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“…The different removal efficiencies of TOC in different types of sediments were coupled with anaerobic microbial oxidation processes. Most likely, the sediments from site TH1 provided a critical growth factor, which was Cell voltages in this experiment (the maximum value was about 120 mV) were higher and power densities (5.4 mW m −2 ) were lower than those from other sediments under the same load resistance (100 Ω) (about 20 mV and 25 mW m −2 ) (Table S3) [31]. The higher voltages in our experiments might be due to the higher content of organic matter in the sediments, but the larger anode area resulted in a smaller power density compared to other studies.…”

Section: Changing Of Toc Removal Efficiencies During Smfc Operationmentioning

confidence: 90%

Contrasting Effects of Sediment Microbial Fuel Cells (SMFCs) on the Degradation of Macrophyte Litter in Sediments from Different Areas of a Shallow Eutrophic Lake

2019

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Eutrophication is one of the major ecological problems of our era. It accelerates the growth of aquatic plant and algae, eventually leading to ecological deterioration. Based on a 700-day lab experiment, this paper investigated the contrasting effects of sediment microbial fuel cells (SMFCs) on the removal of macrophyte litter in a macrophyte-dominated area and an algae-dominated area from two bay areas of a shallow eutrophic lake. The results revealed that the removal efficiencies of total organic carbon increased by 14.4% in the macrophyte-dominated area and 7.8% in the algae-dominated area. Moreover, it was found that sediment samples from the macrophyte-dominated area became more humified and had a higher electricity generation compared to the sediment samples from the algae-dominated area. Pyrosequencing analysis further determined that SMFC promoted more aromatic compound-degrading bacteria growth in sediments from the macrophyte-dominated area than from the algae-dominated area. Our study demonstrated that SMFC could enhance organic matter degradation, especially plant litter degradation, but this influence showed different from sediment sources. Thus, SMFC is capable of providing a useful strategy for delaying the terrestrialization of lakes areas suffering from eutrophication.

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Chemometrical assessment of the electrical parameters obtained by long-term operating freshwater sediment microbial fuel cells

Cited by 38 publications

References 41 publications

Assessment of Electron Transfer Mechanisms during a Long-Term Sediment Microbial Fuel Cell Operation

Assessment of Electron Transfer Mechanisms during a Long-Term Sediment Microbial Fuel Cell Operation

The effect of number and configuration of sediment microbial fuel cells on their performance in an open channel architecture

Contrasting Effects of Sediment Microbial Fuel Cells (SMFCs) on the Degradation of Macrophyte Litter in Sediments from Different Areas of a Shallow Eutrophic Lake

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