Effect of Zeolite-Fe on graphite anode in electroactive biofilm development for application in microbial fuel cells

González, Thaís; Ureta-Zañartu, María Soledad; Marco, José F.; Vidal, Gladys

doi:10.1016/j.apsusc.2018.10.120

Cited by 25 publications

(5 citation statements)

References 35 publications

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“…This also agrees with earlier studies, in which EPB communities were investigated as microbial fuel cells for biological energy [20][21][22]. To gain energy from a microbial fuel cell, an anode electrode made from conductive materials that collects the electrons discharged by EPB and an electron acceptor that receives the electrons on the surface of the cathode electrode are required [23]. Herein, it was shown amorphous carbon contained in San-Earth plays a role as an anode electrode to act as a bridge from the electrons to the acceptor.…”

Section: Discussionsupporting

confidence: 88%

Application of Conductive Concrete as a Microbial Fuel Cell to Control H2S Emission for Mitigating Sewer Corrosion

Imai

Fukushima

et al. 2022

Water

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Localized biogenic corrosion and extrication of annoying odors caused by hydrogen sulfide (H2S) have long been a big problem in the management of urban sewer systems. H2S emission control in sewers via chemically or biologically normal oxidation processes has also been investigated extensively and is costly. The objective of this work was to develop a new technology to mitigate the concentration of H2S in sewer pipes using conductive concrete. Experimental results after 66 days show that the concentration of hydrogen sulfide significantly decreased when conductive concrete was used as a microbial fuel cell. Both ordinary Portland cement and conductive concrete were utilized for the target experiment. Elemental sulfur was observed in the coating sludge of conductive concrete, whereas this trend was not observed for ordinary Portland cement. These observations demonstrate that conductive concrete provides an electron pathway from deposited sludge in the bottom of sewer pipes to oxygen dissolved in surface water electrons generated from hydrogen sulfide oxidation in an anaerobic environment via conductive concrete. Finally, regarding the mechanism responsible for hydrogen sulfide oxidation, chemical oxidation was the dominant process, and biological processes did not play a significant role.

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Section: Discussionsupporting

confidence: 88%

Application of Conductive Concrete as a Microbial Fuel Cell to Control H2S Emission for Mitigating Sewer Corrosion

Imai

Fukushima

et al. 2022

Water

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“…Next, a bare carbon paper electrode was placed in a solution at 100°C for 3 h for hydrothermal synthesis. CP/TiO 2 ‐HX@MWCNT‐COOH‐Al 2 O 3 was then removed from the suspension after hydrothermal synthesis, rinsed with deionized water, and dried in an oven at 80°C for 24 h 24 …”

Section: Methodsmentioning

confidence: 99%

Treatment of vegetable oil industry wastewater and bioelectricity generation using microbial fuel cell via modification and surface area expansion of electrodes

Yaghmaeian

Ahmad

Ansari

et al. 2023

J of Chemical Tech & Biotech

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“…Modifying electrodes through surface modification is an effective strategy for regulating biofilm formation and improving BES performance. For example, faujasite zeolite-Y (ZY) exchanged with iron (Fe) was used to modify the glassy carbon/graphite electrode (GC/gr-ZY Fe ), as the MFC anode could increase the maximum current density by 7.7 times compared with the bare GC/gr electrode; this improvement was attributed to a stronger hydrophilic electrode surface that facilitated the attachment of microbial cells [38]. Furthermore, partial oxidation of carbon felt through ultraviolet (UV)/O 3 treatment can enhance the biofilm formation and electron transfer of Shewanella, with the best biofilm performance achieved when the carbon electrode undergoes 45 min of UV/O 3 treatment [39].…”

Section: Electrode Modificationmentioning

confidence: 99%

Advances in the Application of Quorum Sensing to Regulate Electrode Biofilms in Bioelectrochemical Systems

et al. 2023

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Bioelectrochemical systems (BESs) are an emerging technology for wastewater treatment and resource recovery. These systems facilitate electron transfer between microorganisms and electrodes, enabling their application in various fields, such as electricity production, bioremediation, biosensors, and biocatalysis. However, electrode biofilms, which play a critical role in BESs, face several challenges (e.g., a long acclimation period, low attached biomass, high electron transfer resistance, and poor tolerance and stability) that limit the development of this technology. Quorum sensing (QS) is a communication method among microorganisms that can enhance the performance of BESs by regulating electrode biofilms. QS regulation can positively impact electrode biofilms by enhancing extracellular electron transfer (EET), biofilm formation, cellular activity, the secretion of extracellular polymeric substances (EPS), and the construction of microbial community. In this paper, the characteristics of anode electrogenic biofilms and cathode electrotrophic biofilms in BESs, EET mechanisms, and the main factors affecting biofilm formation were summarized. Additionally, QS regulation mechanisms for biofilm formation, strategies for enhancing and inhibiting QS, and the application of QS regulation for electrode biofilms in BESs were systematically reviewed and discussed. This paper provides valuable background information and insights for future research and development of BES platforms based on QS regulation of electrode biofilms.

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Effect of Zeolite-Fe on graphite anode in electroactive biofilm development for application in microbial fuel cells

Cited by 25 publications

References 35 publications

Application of Conductive Concrete as a Microbial Fuel Cell to Control H2S Emission for Mitigating Sewer Corrosion

Application of Conductive Concrete as a Microbial Fuel Cell to Control H2S Emission for Mitigating Sewer Corrosion

Treatment of vegetable oil industry wastewater and bioelectricity generation using microbial fuel cell via modification and surface area expansion of electrodes

Advances in the Application of Quorum Sensing to Regulate Electrode Biofilms in Bioelectrochemical Systems

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