Sludge Derived Carbon Modified Anode in Microbial Fuel Cell for Performance Improvement and Microbial Community Dynamics

Zhu, Kaili; Xu, Yihu; Yang, Xiaoqi; Fu, Wencai; Dang, Wenhao; Yuan, Jinxia; Wang, Zhiwei

doi:10.3390/membranes12020120

Cited by 15 publications

(4 citation statements)

References 43 publications

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“…These authors found that MFCs with sludge carbon electrodes, especially those obtained at a carbonization temperature of 1000 • C, exhibited improved performance in chemical oxygen demand removal efficiency, organic matter degradation, and electrochemical oxidation activity compared with carbon cloth electrodes. The sludge carbonization temperature significantly influenced MFC system voltage output, with sludge carbon electrodes consistently outperforming carbon cloth electrodes [177]. This can be seen in Figure 10.…”

Section: Microbial Fuel Cell Electrodesmentioning

confidence: 88%

Renewable Carbonaceous Materials from Biomass in Catalytic Processes: A Review

Villora-Picó,

González-Arias,

Baena-Moreno

et al. 2024

Materials

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This review paper delves into the diverse ways in which carbonaceous resources, sourced from renewable and sustainable origins, can be used in catalytic processes. Renewable carbonaceous materials that come from biomass-derived and waste feedstocks are key to developing more sustainable processes by replacing traditional carbon-based materials. By examining the potential of these renewable carbonaceous materials, this review aims to shed light on their significance in fostering environmentally conscious and sustainable practices within the realm of catalysis. The more important applications identified are biofuel production, tar removal, chemical production, photocatalytic systems, microbial fuel cell electrodes, and oxidation applications. Regarding biofuel production, biochar-supported catalysts have proved to be able to achieve biodiesel production with yields exceeding 70%. Furthermore, hydrochars and activated carbons derived from diverse biomass sources have demonstrated significant tar removal efficiency. For instance, rice husk char exhibited an increased BET surface area from 2.2 m2/g to 141 m2/g after pyrolysis at 600 °C, showcasing its effectiveness in adsorbing phenol and light aromatic hydrocarbons. Concerning chemical production and the oxidation of alcohols, the influence of biochar quantity and pre-calcination temperature on catalytic performance has been proven, achieving selectivity toward benzaldehyde exceeding 70%.

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Section: Microbial Fuel Cell Electrodesmentioning

confidence: 88%

Renewable Carbonaceous Materials from Biomass in Catalytic Processes: A Review

Villora-Picó,

González-Arias,

Baena-Moreno

et al. 2024

Materials

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“…Complex biofilms can consist of two cultures, the synergistic effect of which is well studied, or of dozens of different strains with extremely complex interactions. The most popular mixed crop used in MFCs to this day is active sludge [ 214 ]. However, its composition is constantly changing and difficult to reproduce, which means that it is impossible to fully predict the ways of processing substrates and the effectiveness of electronic transfer in each specific case.…”

Section: Mfc Based On Microbial Biofilmsmentioning

confidence: 99%

Microbial Biofilms: Features of Formation and Potential for Use in Bioelectrochemical Devices

Perchikov,

Cheliukanov,

Plekhanova

et al. 2024

Biosensors

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Microbial biofilms present one of the most widespread forms of life on Earth. The formation of microbial communities on various surfaces presents a major challenge in a variety of fields, including medicine, the food industry, shipping, etc. At the same time, this process can also be used for the benefit of humans—in bioremediation, wastewater treatment, and various biotechnological processes. The main direction of using electroactive microbial biofilms is their incorporation into the composition of biosensor and biofuel cells This review examines the fundamental knowledge acquired about the structure and formation of biofilms, the properties they have when used in bioelectrochemical devices, and the characteristics of the formation of these structures on different surfaces. Special attention is given to the potential of applying the latest advances in genetic engineering in order to improve the performance of microbial biofilm-based devices and to regulate the processes that take place within them. Finally, we highlight possible ways of dealing with the drawbacks of using biofilms in the creation of highly efficient biosensors and biofuel cells.

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“…Efforts are on to improve efficiency and couple value-addition benefits to the bio-based treatment processes to realize their full potential for real-world applications 2 . Transforming organic compounds in wastewater into valuable derivatives using bioelectrochemical systems (BESs) has drawn advancing attraction due to its prospect in miscellaneous implementations 3 . Microbial fuel cell (MFC) is an attractive addendum to this biotechnological venture for their potential to break down the biodegradable organic compounds that exist in wastewater bodies using electroactive microbes and simultaneously generate bioelectrical power through bioelectrochemical transformation strategies 4 .…”

Section: Introductionmentioning

confidence: 99%

Bacterial community structure of electrogenic biofilm developed on modified graphite anode in microbial fuel cell

Hemdan

El‐Taweel

Naha

et al. 2023

Sci Rep

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Formation of electrogenic microbial biofilm on the electrode is critical for harvesting electrical power from wastewater in microbial biofuel cells (MFCs). Although the knowledge of bacterial community structures in the biofilm is vital for the rational design of MFC electrodes, an in-depth study on the subject is still awaiting. Herein, we attempt to address this issue by creating electrogenic biofilm on modified graphite anodes assembled in an air–cathode MFC. The modification was performed with reduced graphene oxide (rGO), polyaniline (PANI), and carbon nanotube (CNTs) separately. To accelerate the growth of the biofilm, soybean-potato composite (plant) powder was blended with these conductive materials during the fabrication of the anodes. The MFC fabricated with PANI-based anode delivered the current density of 324.2 mA cm−2, followed by CNTs (248.75 mA cm−2), rGO (193 mA cm−2), and blank (without coating) (151 mA cm−2) graphite electrodes. Likewise, the PANI-based anode supported a robust biofilm growth containing maximum bacterial cell densities with diverse shapes and sizes of the cells and broad metabolic functionality. The alpha diversity of the biofilm developed over the anode coated with PANI was the loftiest operational taxonomic unit (2058 OUT) and Shannon index (7.56), as disclosed from the high-throughput 16S rRNA sequence analysis. Further, within these taxonomic units, exoelectrogenic phyla comprising Proteobacteria, Firmicutes, and Bacteroidetes were maximum with their corresponding level (%) 45.5, 36.2, and 9.8. The relative abundance of Gammaproteobacteria, Clostridia, and Bacilli at the class level, while Pseudomonas, Clostridium, Enterococcus, and Bifidobacterium at the genus level were comparatively higher in the PANI-based anode.

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Sludge Derived Carbon Modified Anode in Microbial Fuel Cell for Performance Improvement and Microbial Community Dynamics

Cited by 15 publications

References 43 publications

Renewable Carbonaceous Materials from Biomass in Catalytic Processes: A Review

Renewable Carbonaceous Materials from Biomass in Catalytic Processes: A Review

Microbial Biofilms: Features of Formation and Potential for Use in Bioelectrochemical Devices

Bacterial community structure of electrogenic biofilm developed on modified graphite anode in microbial fuel cell

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