Light-dependent processes on the cathode enhance the electrical outputs of sediment microbial fuel cells

Bardarov, Ivo; Mitov, Mario; Ivanova, Desislava; Hubenova, Yolina

doi:10.1016/j.bioelechem.2018.02.009

Cited by 22 publications

(9 citation statements)

References 45 publications

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“…The R ct is related to the activation energy of anode, and low R ct contributes to enhancing the power generation. Our internal resistance results are comparable with previous studies such as the ones conducted by Prakash et al29 with carbon cloth anode (R ct = 74.7 Ω) and by Li et al27 with graphite plate anode (72 ± 12) using a mixture of biochar and sediment as an anode medium 30.…”

supporting

confidence: 91%

“…11 In the previous studies, Wang et al 26 used carbon cloth as an anode material and produced a maximum power density of 10.36 mW/m 2 , which is 18 times lower than that of our study. In another research, Bardarov et al 27 used graphite plane disks as an anode and produced a max power density of 18.1 mW/m 2 , which is remarkably lower than the max power density in this study.…”

Section: Electrochemical Performance Of the Smfc Systemcontrasting

confidence: 54%

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Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Taşkan

Hasar

2020

Env Prog and Sustain Energy

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The aim of this study is to increase the electricity generation capacity of sediment microbial fuel cell (SMFC) using sewage sludge as a substrate source in anode media via an attractive electrode material. For this purpose, several electrochemical and molecular techniques have been employed to evaluate the performance of SMFC. The max power density and charge transfer resistance of SMFC running on sewage sludge were 187 mW/m2 and 84.7 Ω, respectively. The polymerase chain reaction‐denaturing gradient gel electrophoresis (PCR‐DGGE) analysis indicated that bacteria in anode biofilm belonged to the Clostridia, d‐proteobacteria, g‐proteobacteria, and b‐proteobacteria. Scanning electron microscopy and fluorescence in situ hybridization observations demonstrated that a viable biofilm was formed on the anode surface and the abundance of bacteria was significantly higher than archaea. Consequently, this study showed that sewage sludge could be used as a substrate in the anode media of SMFC for producing high power density.

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supporting

confidence: 91%

Section: Electrochemical Performance Of the Smfc Systemcontrasting

confidence: 54%

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Taşkan

Hasar

2020

Env Prog and Sustain Energy

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“…After quality control, valid tags were clustered into operational taxonomic units (OTUs) based on higher than 97% sequence similarity using CD‐HIT program (version 4.6.1) (W. Li & Godzik, ). OTUs with only one tag (singleton OTUs) and OTUs with an abundance less than 0.001% of the total number of tags from whole samples were excluded (Bardarov, Mitov, Ivanova, & Hubenova, ). OTU tables were rarefied on the basis of the sample with the lowest reads number (22,637 counts per sample).…”

Section: Methodsmentioning

confidence: 99%

Effects of florfenicol feeding on diversity and composition of the intestinal microbiota of channel catfish ( Ictalurus punctatus )

Abdelhamed

Özdemir

Waldbieser³

et al. 2019

Aquac Res

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Intestinal microbiota contributes health of living organisms. Florfenicol is an approved antimicrobial (AM) prescribed for several bacterial fish diseases. The present study investigated the extent to which florfenicol modulates intestinal microbial populations of channel catfish (Ictalurus punctatus). Florfenicol was administered orally to catfish at a standard therapeutic dose (10–15 mg/kg of body weight for 10 days), and the intestinal contents were collected and the 16S rRNA was subjected to Illumina sequencing. Alpha diversity analysis indicated that florfenicol significantly decreased microbiota richness and diversity. Beta diversity reflected a clear separation had occurred between the florfenicol‐fed and control groups. Results indicated a significant increase in the abundance of phylum Proteobacteria (98.97% vs. 79.35% of the population) and decrease in phyla Firmicutes and Bacteroidetes (0.72% and 0.29% vs. 18.04% and 2.53%, respectively) in the florfenicol‐fed fish in comparison with the control fish. At the genus level, unclassified Enterobacteriaceae and Escherichia populations increased in the florfenicol group. In contrast, Plesiomonas, Aeromonas, Lactococcus, Clostridium sensu stricto, Romboutsia, Klebsiella, Turicibacter and Lactobacillus decreased in florfenicol‐fed fish in comparison with the control fish, indicating that intestinal microbiota of catfish was substantially modulated by florfenicol administration. Knowledge of changes in gut microbiota during medicated feed administration is important to improve fish performance and disease management and could enable the development of alternative therapeutic strategies.

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“…It is also worth noting the obvious enrichment of Geobacter (belonging to Delta-proteobacteria) in the SMFC sediments, obviously on the anode surface in site TH2. Microorganisms in the cathodic biofilm consortium have been found to contribute to the overall SMFC performance [42]. Chitinophagaceae and Cytophagaceae were found on the surface of cathode both from site TH1 and TH2, and they are the more abundant of the two microbes found on cathodes from site TH1.…”

Section: Microbial Communities Diversity In Sediments and On The Surfmentioning

confidence: 99%

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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Light-dependent processes on the cathode enhance the electrical outputs of sediment microbial fuel cells

Cited by 22 publications

References 45 publications

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Effects of florfenicol feeding on diversity and composition of the intestinal microbiota of channel catfish ( Ictalurus punctatus )

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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Light-dependent processes on the cathode enhance the electrical outputs of sediment microbial fuel cells

Cited by 22 publications

References 45 publications

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO2 electrode

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO2 electrode

Effects of florfenicol feeding on diversity and composition of the intestinal microbiota of channel catfish ( Ictalurus punctatus )

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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Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode