Influence of carbon-based cathodes on biofilm composition and electrochemical performance in soil microbial fuel cells

Nandy, Abhishek; Farkas, Daniel; Pepió-Tárrega, Belén; Martínez-Crespiera, Sandra; Borràs, Eduard; Avignone–Rossa, Claudio; Lorenzo, Mirella Di

doi:10.1016/j.ese.2023.100276

Cited by 18 publications

(4 citation statements)

References 97 publications

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“…The porous structure of the nanofiber composite electrode effectively decreased the internal resistance of the MFC cathode. Nandy et al 23 conducted a comparative study on the performance of soil microbial fuel cell (SMFC) technology utilizing different cathode materials: Fe-doped carbon nanofiber (CNF), Pt-doped carbon cloth (PtC), carbon cloth, and graphite felt (GF). The study showed that Fe-doped CNF and PtC had steady performance, reaching peak power densities of 25.5 mW m −2 and 30.4 mW m −2 , respectively, in relation to the cathode's geometric area.…”

Section: Applications Of Nanofiber Technology In Microbial Fuel Cellsmentioning

confidence: 99%

“…Using nanobers offers a viable option to tackle the main issues of reducing costs and increasing productivity in microbial fuel cell (MFC) systems. 22,23 Nanobers can be produced economically employing efficient methods and resources, leading to decreased production expenses. The customisable features enhance the optimisation of electrode and membrane materials, hence enhancing the performance and lifespan of MFC systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanofiber applications in microbial fuel cells for enhanced energy generation: a mini review

Yalcinkaya,

Torres-Mendieta,

Hruza

et al. 2024

RSC Adv.

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Section: Applications Of Nanofiber Technology In Microbial Fuel Cellsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanofiber applications in microbial fuel cells for enhanced energy generation: a mini review

Yalcinkaya,

Torres-Mendieta,

Hruza

et al. 2024

RSC Adv.

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show abstract

“…On the other hand, the fusion of space-time technology has the ability to enhance image quality, obtain temporal remote sensing data that can be used to describe the ecological conditions in different periods, and reveal the evolutionary characteristics of the ecological environment at the fine scale [125][126][127][128]. Moreover, new techniques, such as cloud computing, big data, and artificial intelligence, have injected new vitality into remote sensing image processing and provide innovative technical means of solving the large-scale automatic processing of and intelligent information extraction from satellite data, which can fully tap the value of massive remote sensing data and promote the rapid development of remote sensing technology [129][130][131].…”

Section: Prospects Of Remote Sensing Technology For Ecological Enviro...mentioning

confidence: 99%

Mapping of Ecological Environment Based on Google Earth Engine Cloud Computing Platform and Landsat Long-Term Data: A Case Study of the Zhoushan Archipelago

Chen,

Wang,

Yang

et al. 2023

Remote Sensing

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In recent years, with the rapid advancement of China’s urbanization, the contradiction between urban development and the ecological environment has become increasingly prominent, and the urban ecological system now faces severe challenges. In this study, we proposed an ecological index-based approach to monitor and evaluate the ecological environment using a Google Earth Engine cloud-based platform and Landsat time series. Firstly, a long-term series of Landsat images was obtained to construct and calculate the remote sensing-based ecological index (RSEI). Then, the Theil–Sen median estimation and the Mann–Kendall test were used to evaluate the trend and significance of the RSEI time series and combined with the Hurst index to predict the future development trend of the ecological environment in the study area. Finally, the coefficient of variation method was used to determine the temporal stability of the ecological environment. Taking Zhoushan Archipelago, China, as the study area, we mapped the distribution of the ecological environment using a spatial resolution of 30 m and evaluated the ecological environment from 1985 to 2020. The results show that (1) from 1985 to 2020, the average RSEI in the Zhoushan Archipelago decreased from 0.7719 to 0.5817, increasing at a rate of −24.64%. (2) The changes in the areas of each level of ecological environmental quality show that the ecological environment in the Zhoushan Archipelago generally exhibited a decreasing trend. During the study period, the proportion of the areas with excellent ecological environmental quality decreased by 38.83%, while the proportion of areas with poor and relatively poor ecological environmental quality increased by 20.03%. (3) Based on the overall change trend, the degradation in the ecological environment in the Zhoushan Archipelago was greater than the improvement, with the degradation area accounting for 84.35% of the total area, the improvement area accounting for 12.61% of the total area, and the stable area accounting for 3.05% of the total area. (4) From the perspective of the sustainability of the changes, in 86.61% of the study area, the RSEI exhibited positive sustainability, indicating that the sustainability of the RSEI was relatively strong. (5) The coefficient of variation in the RSEI was concentrated in the range of 0–0.40, having an average value of 0.1627 and a standard deviation of 0.1467, indicating that the RSEI values in the Zhoushan Archipelago during the study period were concentrated, the interannual fluctuations of the data were small, and the time series was relatively stable. The results of this study provide theoretical methods and a decision-making basis for the dynamic monitoring and regional governance of the ecological environment in island areas.

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“…In another study, the effect of different cathode materials was ascertained to enhance electrogenesis [10]. Graphite felt was found to be the best electrode material for optimal electrogenesis with higher voltage, catalytic activity, and a significant enrichment of bacteria belonging to the genus Hydrogenophaga.…”

Section: Introductionmentioning

confidence: 99%

Detection and Characterization of Electrogenic Bacteria from Soils

Rumora,

Hopkins,

Yim

et al. 2023

BioTech

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Soil microbial fuel cells (SMFCs) are bioelectrical devices powered by the oxidation of organic and inorganic compounds due to microbial activity. Seven soils were randomly selected from Bergen Community College or areas nearby, located in the state of New Jersey, USA, were used to screen for the presence of electrogenic bacteria. SMFCs were incubated at 35–37 °C. Electricity generation and electrogenic bacteria were determined using an application developed for cellular phones. Of the seven samples, five generated electricity and enriched electrogenic bacteria. Average electrical output for the seven SMFCs was 155 microwatts with the start-up time ranging from 1 to 11 days. The highest output and electrogenic bacterial numbers were found with SMFC-B1 with 143 microwatts and 2.99 × 109 electrogenic bacteria after 15 days. Optimal electrical output and electrogenic bacterial numbers ranged from 1 to 21 days. Microbial DNA was extracted from the top and bottom of the anode of SMFC-B1 using the ZR Soil Microbe DNA MiniPrep Protocol followed by PCR amplification of 16S rRNA V3-V4 region. Next-generation sequencing of 16S rRNA genes generated an average of 58 k sequences. BLAST analysis of the anode bacterial community in SMFC-B1 demonstrated that the predominant bacterial phylum was Bacillota of the class Clostridia (50%). However, bacteria belonging to the phylum Pseudomonadota (15%) such as Magnetospirillum sp. and Methylocaldum gracile were also part of the predominant electrogenic bacterial community in the anode. Unidentified uncultured bacteria accounted for 35% of the predominant bacterial community. Bioelectrical devices such as MFCs provide sustainable and clean alternatives to future applications for electricity generation, waste treatment, and biosensors.

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Influence of carbon-based cathodes on biofilm composition and electrochemical performance in soil microbial fuel cells

Cited by 18 publications

References 97 publications

Nanofiber applications in microbial fuel cells for enhanced energy generation: a mini review

Nanofiber applications in microbial fuel cells for enhanced energy generation: a mini review

Mapping of Ecological Environment Based on Google Earth Engine Cloud Computing Platform and Landsat Long-Term Data: A Case Study of the Zhoushan Archipelago

Detection and Characterization of Electrogenic Bacteria from Soils

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