Quorum sensing signals enhance the electrochemical activity and energy recovery of mixed-culture electroactive biofilms

Chen, Shanshan; Jing, Xianyue; Tang, Jiahuan; Fang, Yanlun; Zhou, Shungui

doi:10.1016/j.bios.2017.06.024

Cited by 123 publications

(52 citation statements)

References 43 publications

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“…Quorum sensing is a bacterial phenomenon of small molecule communication between bacterial cells to induce community changes such as biofilm formation [80]. The bacterial mechanisms of quorum sensing can be harnessed to increase electroactive biofilm formation and thereby improve the current production in microbial electrochemical systems [81]. For the use of halophilic bacteria in microbial electrochemical systems and sensing, quorum sensing should be investigated and utilized to increase electroactive biofilm formation.…”

Section: Engineering Systems With Electroactive Halophilic Bacteria Fmentioning

confidence: 99%

The Use of Electroactive Halophilic Bacteria for Improvements and Advancements in Environmental High Saline Biosensing

Gaffney

Simoska

2021

Biosensors

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Halophilic bacteria are remarkable organisms that have evolved strategies to survive in high saline concentrations. These bacteria offer many advances for microbial-based biotechnologies and are commonly used for industrial processes such as compatible solute synthesis, biofuel production, and other microbial processes that occur in high saline environments. Using halophilic bacteria in electrochemical systems offers enhanced stability and applications in extreme environments where common electroactive microorganisms would not survive. Incorporating halophilic bacteria into microbial fuel cells has become of particular interest for renewable energy generation and self-powered biosensing since many wastewaters can contain fluctuating and high saline concentrations. In this perspective, we highlight the evolutionary mechanisms of halophilic microorganisms, review their application in microbial electrochemical sensing, and offer future perspectives and directions in using halophilic electroactive microorganisms for high saline biosensing.

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Section: Engineering Systems With Electroactive Halophilic Bacteria Fmentioning

confidence: 99%

The Use of Electroactive Halophilic Bacteria for Improvements and Advancements in Environmental High Saline Biosensing

Gaffney

Simoska

2021

Biosensors

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“…Chen et al . found a concentration of 10 µmol L −1 of the AHL, 3OC12‐HSL, in a mixed‐culture DCMFC, led to a reduction in ‘start‐up’ time from 10 days to 4 days compared with control, in addition to an increase in CE from 28.3 ± 4.1% to 36.2 ± 5.1% . In addition confocal laser scanning microscopy (CLSM) analysis showed that all AHLs tested (C4‐HSL, C6‐HSL and 3OC12‐HSL) improved biofilm formation.…”

Section: Bioanode Considerationsmentioning

confidence: 90%

Biocatalytic electrode improvement strategies in microbial fuel cell systems

Breheny

Bowman

Farahmand

et al. 2019

J of Chemical Tech & Biotech

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Microbial fuel cells (MFCs) produce electricity as a result of the microbial metabolism of organic substrates, hence they represent a sustainable approach for energy production and waste treatment. If the technology is to be implemented in industry, low cost and sustainable bioelectrodes must be developed to increase power output, increase waste treatment capacity, and improve service intervals. Although the current application of abiotic electrode catalysts, such as platinum and electrode binders such as Nafion leads to greater MFC performance, their use is cost prohibitive. Novel bioelectrodes which use cost effective and sustainable materials are being developed. These electrodes are developed with the intention to reduce start-up time, reduce costs, extend life-span and improve core MFC performance metrics (i.e. power density, current density, chemical oxygen demand (COD) reduction and Coulombic efficiency (CE)). Comparison of different MFC systems is not an easy task. This is due to variations in MFC design, construction, operation, and different inocula (in the case of mixed-culture MFCs). This high intra-system variability should be considered when assessing MFC data, operation and performance. This review article examines the major issues surrounding bioanode and biocathode improvement in different MFC systems, with the ultimate goal of streamlining and standardising improvement processes.

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“…Bu amaçla BFVH sistemine EIS uygulanmış ve elde edilen sonuçlara Chen, ve ark. [31] tarafından verilen model uygulanarak BFVH'de anot elektrotuna ait direnç değerleri tespit edilmiştir. Nyquist diyagramı ve uygulanan model Şekil 4'te görülmektedir.…”

Section: Elektrokimyasal Analiz Sonuçlarıunclassified

“…Elektrokimyasal empedans analizi (EIS) Gamry Interface 1000 potansiyostat (Gamry, Warminster, PA) kullanılarak, 5 mV genlikli sinyal ile 0,1 Hz-100 kHz frekans aralığında gerçekleştirilmiştir[30]. Elde edilen veriler kullanılarak BFVH'nin farklı bileşenlerine ait direnç değerleri, Gamry Echem Analyst V6.25 yazılımı ile Chen, ve ark [31]. tarafından oluşturulan model kullanılarak belirlenmiştir (Şekil 4b).…”

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Chlorella vulgaris Mikroalgi Kullanılarak Biyofotovoltaik Hücrede Güç Yoğunluğunun Araştırılması

Bakir

Taşkan

2021

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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Bu çalışmada laboratuvar ölçekli bir biyofotovoltaik hücre (BFVH) kullanılarak Chlorella vulgaris mikroalginin elektrik üretim kapasitesi araştırılmıştır. BFVH'de anot materyali olarak kalay oksit kaplı bakır mesh elektrot, katot materyali olarak ise platin kaplı titanyum mesh elektrot kullanılmıştır. BFVH'de üretilen maksimum güç yoğunluğu 142,28 mW/m 2 olarak elde edilmiştir. Nyquist analizi sonucunda anot biyofilm direncinin 0,74 Ω olduğu belirlenmiştir. BFVH'nin işletme süresi sonunda anot elektrotu yüzeyinden alınan SEM görüntülerinde yoğun bir biyofilm yapısının mevcut olduğu tespit edilmiştir. Elde edilen sonuçlar, BFVH'nin elektrik üretim performansının literatür değerleri ile kıyaslanabilir düzeyde olduğunu göstermiştir.

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Quorum sensing signals enhance the electrochemical activity and energy recovery of mixed-culture electroactive biofilms

Cited by 123 publications

References 43 publications

The Use of Electroactive Halophilic Bacteria for Improvements and Advancements in Environmental High Saline Biosensing

The Use of Electroactive Halophilic Bacteria for Improvements and Advancements in Environmental High Saline Biosensing

Biocatalytic electrode improvement strategies in microbial fuel cell systems

Chlorella vulgaris Mikroalgi Kullanılarak Biyofotovoltaik Hücrede Güç Yoğunluğunun Araştırılması

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