Electrochemical removal of microalgae with an integrated electrolysis-microbial fuel cell closed-loop system

Monasterio, Sara; Mascia, Michele; Lorenzo, Mirella Di

doi:10.1016/j.seppur.2017.03.057

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…Direct oxidation involves electron transfer between anode and cell membrane, which is affected mainly by mass diffusion, electrode surface area, and anode potential. Indirect oxidation relies on the production of reactive species from electrolyte redox reaction, such as hydroxyl radical ( • OH) and hydrogen peroxide (H 2 O 2 ) that subsequently mediate the pathogen inactivation in solution . The species and concentration of these generated oxidants depend primarily on the composition of electrolyte and electrode potential.…”

Section: Introductionmentioning

confidence: 98%

“…Indirect oxidation relies on the production of reactive species from electrolyte redox reaction, such as hydroxyl radical ( • OH) and hydrogen peroxide (H 2 O 2 ) that subsequently mediate the pathogen inactivation in solution. 4 The species and concentration of these generated oxidants depend primarily on the composition of electrolyte and electrode potential. In an electrochemical system, the contributions and functions of direct and indirect oxidation to pathogen inactivation are strongly dependent on electrode configurations, besides the basic properties of electrode material, experimental conditions, and electrolyte composition.…”

Section: ■ Introductionmentioning

confidence: 99%

“…As a result, the disinfection ability of second electrode is bound to be affected by first electrode when the pathogens can permeate to the second electrode. However, the flow-through electrode system (FES) with sequential oxidation–reduction ,− and reduction–oxidation ,,, processes were both utilized in electrochemical process. Additionally, limited relevant studies can be found in literature about using sequential oxidation–reduction process to recognize the synergism during flow through E-Fenton oxidation of oxalate, and to demonstrate the ability of the sequential reduction–oxidation process for nitrobenzene mineralization .…”

Section: Introductionmentioning

confidence: 99%

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Carbon Fiber-Based Flow-Through Electrode System (FES) for Water Disinfection via Direct Oxidation Mechanism with a Sequential Reduction–Oxidation Process

Liu

Huo

et al. 2019

Environ. Sci. Technol.

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Flow-through configuration for electrochemical disinfection is considered as a promising approach to minimize the formation of toxic byproducts and energy consumption via the enhanced convective mass transport as compared with conventional flow-by one. Under this hydrodynamic condition, it is essential to ascertain the effect of sequential electro-redox processes with the cathode/anode then anode/cathode arrangements on disinfection performance. Here, carbon fiber felt (CFF) was utilized to construct two flow-through electrode systems (FESs) with sequential reduction–oxidation (cathode-anode) or oxidation–reduction (anode–cathode) processes to systematically compare their disinfection performance toward a model Escherichia coli (E. coli) pathogen. In-situ sampling and live/dead backlight staining experiments revealed that E. coli inactivation mainly occurred on anode via an adsorption-inactivation-desorption process. In reduction–oxidation system, after the cathode-pretreatment, bulk solution pH increased significantly, leading to the negative charge of E. coli cells. Hence, E. coli cells were adsorbed and inactivated easily on the subsequent anode, finally resulting in its much better disinfection performance and energy efficiency than the oxidation–reduction system. Application of 3.0 V resulted in ∼6.5 log E. coli removal at 1500 L m–2 h–1 (50 mL min–1), suggesting that portable devices can be designed from CFF-based FES with potential application for point-of-use water disinfection.

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Section: Introductionmentioning

confidence: 98%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon Fiber-Based Flow-Through Electrode System (FES) for Water Disinfection via Direct Oxidation Mechanism with a Sequential Reduction–Oxidation Process

Liu

Huo

et al. 2019

Environ. Sci. Technol.

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“…Thus the integration of ETs with renewable energy sources is key for scalability and implementation in remote areas (7). Microbial Fuel Cell (MFC) technology holds great potential as a low-cost and sustainable power source that might be used to power ETs, as recently shown by coupling an electrochemical reactor with an array of MFCs for algae removal in wastewater (8). MFCs are fuel cells in which microorganisms catalyse the direct conversion of organic matter into electricity.…”

Section: Introductionmentioning

confidence: 99%

Development of a functional stack of soil microbial fuel cells to power a water treatment reactor: From the lab to field trials in North East Brazil

et al. 2020

Self Cite

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“…The chemical oxygen demand line had a slight negative slope trend between T0 to T15 h. As shown in Figure 2a, the inoculation value of coliphage MS2 was 1370 mg/L; subsequently the COD showed a slight increase (from T1 to T10) due to the release of organics and metabolites as well as bacterial enrichment in electrochemically active biofilm species inside the anodic biofilm [21,22]. Likewise, the current from T1 to T10 showed a slight increase for approximately 10 h and then slowly decreased over the remaining time [21,22].…”

Section: Evaluation Of Physicochemical and Electrochemical Parametersmentioning

confidence: 95%

Removal of Coliphage MS2 Using a Microbial Fuel Cell Stack

Alzate‐Gaviria

Tapia-Tussell

Domínguez‐Maldonado

et al. 2021

Water

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Bioelectrochemical technologies offer alternative ways of treating wastewater and using this process to generate electricity. However, research in this area is just beginning to consider environmental transmission of viruses present in wastewater. The viral fecal indicator coliphage MS2 (the most frequently used pathogen model) was used in this study, since it is a well-known indigenous wastewater virus. The scaled-up bioelectrochemical system had a working volume of 167 L and coliphage MS2 concentration decreased from 8000 to 285 PFU/mL. The kinetics were quantified up to 15 h, after which excessive yeast growth in the system prevented further bacteriophage determination. The logarithmic reduction value (LRV) calculated within the first three hours was 3.8. From 4 hours to 14, LRV values were from 4.1 to 4.8, and in hour 15 the LRV increased to 5.3, yielding a more than 90% reduction. Overall, results obtained indicate that the scaled-up bioelectrochemical treatment system was efficient in reducing coliphage MS2 densities and could be used as a model to explore its further applicability for the reduction of viruses or pathogens in treated effluents.

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Electrochemical removal of microalgae with an integrated electrolysis-microbial fuel cell closed-loop system

Cited by 16 publications

References 37 publications

Carbon Fiber-Based Flow-Through Electrode System (FES) for Water Disinfection via Direct Oxidation Mechanism with a Sequential Reduction–Oxidation Process

Carbon Fiber-Based Flow-Through Electrode System (FES) for Water Disinfection via Direct Oxidation Mechanism with a Sequential Reduction–Oxidation Process

Development of a functional stack of soil microbial fuel cells to power a water treatment reactor: From the lab to field trials in North East Brazil

Removal of Coliphage MS2 Using a Microbial Fuel Cell Stack

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