Producing electrical energy in microbial fuel cells based on sulphate reduction: a review

Rodrigues, Isabel Cristina Braga; Leão, Versiane Albis

doi:10.1007/s11356-020-09728-7

Cited by 21 publications

(7 citation statements)

References 70 publications

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“…49 The other electron scavengers in the MFC treating municipal wastewater have been reported as sulfate in wastewater and oxygen derived from IEM, 40 although the sulfate-reduction products, H 2 S and HS À , can also act as electron donors in MFCs. 50 As the COD-RE in the liquid are virtually uncontrollable, current recovery must be increased for further COD-RE. The observed COD-RE was lower than the values reported in studies on other MFCs (ESI Table 1 †).…”

Section: Discussionmentioning

confidence: 99%

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Estimation of total energy requirement for sewage treatment by a microbial fuel cell with a one-meter air-cathode assuming Michaelis–Menten COD degradation

2021

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Estimation of total energy requirement for sewage treatment by a microbial fuel cell with a one-meter air-cathode assuming Michaelis–Menten COD degradation

2021

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“…There are papers studying the reduction of sulfate to sulfide to remove the cations of heavy metals (copper, lead, zinc, etc.) as insoluble sulfide from mining drainage water [27,28].…”

Section: Microbial Fuel Cellsmentioning

confidence: 99%

“…It is interesting to use the fuel cell technique to reduce sulfate as oxidizer instead of oxygen thus reducing them to sulfide [20][21][22]. Then the cations of heavy metals will be easily deposited as insoluble sulfides [27,28,[57][58][59]. There is double effectremoval of heavy metals and sulfate and adjustment of pH for the drained water..The most studied sulfate-reducing bacteria are from the genera Desulfovibrio, Desulfobacter, Desulfococcus, etc.…”

Section: Microbial Fuel Cells With Sulfate Reductionmentioning

confidence: 99%

Bioelectrochemical Processes in Industrial Biotechnology

Beschkov¹,

Razkazova-Velkova²

2021

Energy Storage Battery Systems - Fundamentals and Applications

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Industrial fermentation and biological wastewater treatment are usually based on redox processes taking place in living cells and on enzyme processes. The practical application of these redox processes is usually associated with electricity generation in microbial fuel cells or process enhancement in microbial electrolysis cells. The microbial fuel cell approach leads to straightforward wastewater treatment with less energy demand. Additional advantages of these processes are the direct removal of various pollutants and the avoidance of addition of chemical agents with the resulting waste products of treatment as it is familiar with the traditional chemical methods. Another option for the use of bioelectrochemical processes in practice is the approach of microbial electrolysis cells. The application of electric field on fermentation or microbial wastewater treatment processes might result in different aspects: either in purely electrochemical processes on the electrodes or in different types of bioelectrochemical stimulation of enzyme activity in the living cells. These applications are associated with the combination of enzyme activity with electrochemical processes to produce or remove certain compounds rapidly at high concentrations with no additions of other chemicals. In the present chapter, both approaches (microbial fuel cells and microbial electrolysis cells) are presented and discussed. Some practical applications and experimental examples of such bioelectrochemical redox processes stimulated by constant electric field are demonstrated.

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“…These microbes can accept electrons from extracellular electron donors, such as minerals or electrodes (7). As a result, their biofilms can be used as catalysts in bioelectrochemical systems for wastewater treatment (8) and energy production (9). SRB are also responsible for substantial economic losses as their biofilms can clog gas and oil pipelines and cause microbially induced corrosion of metal structures (10).…”

Section: Introductionmentioning

confidence: 99%

Reconstitution of a Biofilm Adhesin System from a Sulfate-Reducing Bacterium inPseudomonas fluorescens

Karbelkar,

Font,

Smith

et al. 2023

Preprint

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Biofilms of the sulfate reducing bacterium (SRB)Desulfovibrio vulgarisHildenborough (DvH) can facilitate metal corrosion in various industrial and environmental settings leading to substantial economic losses; however, the mechanisms of biofilm formation by DvH are not yet well-understood. Evidence suggests that a large adhesin, DvhA, may be contributing to biofilm formation in DvH. ThedvhAgene and its neighbors encode proteins that resemble the Lap system, which regulates biofilm formation byPseudomonas fluorescens, including a LapG-like protease DvhG and effector protein DvhD, which has key differences from the previously described LapD. By expressing the Lap-like adhesion components of DvH inP. fluorescens, our data support the model that the N-terminal fragment of the large adhesin DvhA serves as an adhesin “retention module” and is the target of the DvhG/DvhD regulatory module, thereby controlling cell-surface location of the adhesin. By heterologously expressing the DvhG/DvhD-like proteins in aP. fluorescensbackground lacking native regulation (ΔlapGΔlapD) we also show that cell surface regulation of the adhesin is dependent upon the intracellular levels of c-di-GMP. This study provides insight into the key players responsible for biofilm formation by DvH, thereby expanding our understanding of Lap-like systems.SignificanceCorrosion leads to ∼2.5 trillion US dollars in economic losses, 20% of which are estimated to be microbially induced. Biofilms of sulfate reducing bacteria (SRB), especially the genusDesulfovibrio, are important members of the corrosion consortium and accelerate deterioration of metals. Understanding how biofilms are formed by SRB can provide important clues to mitigate this challenge. In this study, we used genetic and biochemical tools to investigate the mechanism of biofilm formation byDesulfovibrio vulgarisHildenborough. Our study reveals critical genes responsible for regulating the secretion of a large adhesin known to be required for biofilm formation.

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Producing electrical energy in microbial fuel cells based on sulphate reduction: a review

Cited by 21 publications

References 70 publications

Estimation of total energy requirement for sewage treatment by a microbial fuel cell with a one-meter air-cathode assuming Michaelis–Menten COD degradation

Estimation of total energy requirement for sewage treatment by a microbial fuel cell with a one-meter air-cathode assuming Michaelis–Menten COD degradation

Bioelectrochemical Processes in Industrial Biotechnology

Reconstitution of a Biofilm Adhesin System from a Sulfate-Reducing Bacterium inPseudomonas fluorescens

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