Electricity Production by the Application of a Low Voltage DC-DC Boost Converter to a Continuously Operating Flat-Plate Microbial Fuel Cell

Song, Young Eun; Boghani, Hitesh C.; Kim, Hong Suck; Kim, Byung Goon; Lee, Tae‐Ho; Jeon, Byong‐Hun; Premier, Giuliano C.; Kim, Eun Jung

doi:10.3390/en10050596

Cited by 15 publications

(10 citation statements)

References 36 publications

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“…To solve the fouling of an ion-exchange membrane, some research groups have focused on modifying the membrane by a treatment with polymer compounds, such as poly (sodium 4-styrene sulfonate) (PSS)/poly(diallyldimethylammonium chloride) (PDADMAC) [34]. An ultra-low voltage customized DC-DC booster circuit [37] and maximum power point tracking (MPPT) [38] may provide an affordable voltage and current for self-sustained electrodialysis applications. Although further studies will be needed in the future, these results may provide a basis for techniques to isolate acetate from actual fermentation end products and culture broth from bioelectrochemical systems.…”

Section: Implication and Conclusionmentioning

confidence: 99%

Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System

et al. 2018

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The conversion of C1 gas feedstock, such as carbon monoxide (CO), to useful platform chemicals has attracted considerable interest in industrial biotechnology. One conversion method is electrode-based electron transfer to microorganisms using bioelectrochemical systems (BESs). In this BES system, acetate is the predominant component of various volatile fatty acids (VFAs). To appropriately separate and concentrate the acetate produced, a BES-type electrodialysis cell with an anion exchange membrane was constructed and evaluated under various operational conditions, such as applied external current, acetate concentration, and pH. A high acetate flux of 23.9 mmol/m2∙h was observed under a −15 mA current in an electrodialysis-based bioelectrochemical system. In addition, the initial acetate concentration affected the separation efficiency and transportation rate. The maximum flux appeared at 48.6 mmol/m2∙h when the acetate concentration was 100 mM, whereas the effects of the initial pH of the anolyte were negligible. The acetate flux was 14.9 mmol/m2∙h when actual fermentation broth from BES-based CO fermentation was used as a catholyte. A comparison of the synthetic broth with the actual fermentation broth suggests that unknown substances and metabolites produced from the previous bioconversion process interfere with electrodialysis. These results provide information on the optimal conditions for the separation of VFAs produced by C1 gas fermentation through electrodialysis and a combination of a BES and electrodialysis.

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Section: Implication and Conclusionmentioning

confidence: 99%

Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System

et al. 2018

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“…However, their low efficiency (or power generation) has become a barrier to industrialization and commercialization . Recent MFC studies have focused on improving the performance of the devices through various strategies, such as (i) enhancing the bacterial electron transfer efficiency in the anode chamber, (ii) promoting the electron transfer on bacteria by modifying the cathode and catholytes and (iii) maximizing the power generation by electrical control . The rate of electron transfer from the bacteria to the electrode is reported as the rate‐determining step during bioelectricity generation by MFCs .…”

Section: Introductionmentioning

confidence: 99%

“…3 Recent MFC studies have focused on improving the performance of the devices through various strategies, such as (i) enhancing the bacterial electron transfer efficiency in the anode chamber, (ii) promoting the electron transfer on bacteria by modifying the cathode and catholytes and (iii) maximizing the power generation by electrical control. [4][5][6][7][8] The rate of electron transfer from the bacteria to the electrode is reported as the rate-determining step during bioelectricity generation by MFCs. 9 To overcome this barrier, several studies on the use of exogenous electron mediators have been performed, including quinone-based molecules, 10 genetically modified electrogenic bacteria 11 and modified electrodes.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of bioelectricity generation by a microbial fuel cell using Ti nanoparticle‐modified carbon electrode

Kim

Heo

2019

J of Chemical Tech & Biotech

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BACKGROUND Microbial fuel cells (MFCs) are promising devices that can be used to generate electricity from organic wastewater through microbial redox reactions. Various strategies have been attempted to improve the power generation of MFCs, including electrode modification. Titanium (Ti) is a biocompatible metal which is commonly used in various applications. This study examined the improvement of voltage generation by Ti nanoparticle attachment to the carbon electrode surface of an MFC by simple dipping and e‐beam evaporation. Two microbes, namely Shewanella oneidensis MR‐1 and Klebsiella pneumoniae L17, having different electron transfer mechanisms were used to identify the effects of Ti nanoparticles on bioelectricity generation. RESULTS Voltage generation was significantly increased for the MFCs containing Ti nanoparticles, both using S. oneidensis MR‐1 and K. pneumoniae L17. Higher concentrations of DNA extracted from the electrode surface indicated that the Ti nanoparticles did not only assist the electron transfer process from the bacteria to the electrode but also microbial attachment on the carbon electrode. Energy‐dispersive X‐ray spectroscopy (EDS) experiments demonstrated the sustainability of the Ti nanoparticles, showing no significant changes in the attached Ti nanoparticles during an operation period of 3 weeks. CONCLUSION It was demonstrated that the Ti‐dipping method is applicable to MFCs as an electrode modification strategy by Ti nanoparticle formation, leading to a similar level of voltage generation (but through a much simpler process) as compared with conventional evaporation methods. © 2019 Society of Chemical Industry

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“…The PMS also regulates the varying outputs of individual cells, which differ in their bioelectrochemical characteristics even when made of identical components, because they are inoculated with different organic wastes. Therefore, PMSs are essential for the industrialization of MFC technology [13,14].…”

Section: Introductionmentioning

confidence: 99%

Practical Maximum-Power Extraction in Single Microbial Fuel Cell by Effective Delivery through Power Management System

et al. 2018

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Power management systems (PMSs) are essential for the practical use of microbial fuel cell (MFC) technology, as they replace the unstable stacking of MFCs with step-up voltage conversion. Maximum-power extraction technology could improve the power output of MFCs; however, owing to the power consumption of the PMS operation, the maximum-power extraction point cannot deliver maximum power to the application load. This study proposes a practical power extraction for single MFCs, which reserves more electrical energy for an application load than conventional maximum power-point tracking (MPPT). When experimentally validated on a real MFC, the proposed method delivered higher output power during a longer PMS operation time than MPPT. The maximum power delivery enables more effective power conditioning of various micro-energy harvesting systems.

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Electricity Production by the Application of a Low Voltage DC-DC Boost Converter to a Continuously Operating Flat-Plate Microbial Fuel Cell

Cited by 15 publications

References 36 publications

Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System

Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System

Enhancement of bioelectricity generation by a microbial fuel cell using Ti nanoparticle‐modified carbon electrode

Practical Maximum-Power Extraction in Single Microbial Fuel Cell by Effective Delivery through Power Management System

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