Co-substrate strategy for improved power production and chlorophenol degradation in a microbial fuel cell

Yu, Yang; Ndayisenga, Fabrice; Yu, Zhisen; Zhao, Mingyue; Lay, Chyi-How; Zhou, Dandan

doi:10.1016/j.ijhydene.2019.05.221

Cited by 46 publications

(9 citation statements)

References 54 publications

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“…Microbial reduction is generally a low-cost and environmentally friendly method to convert hazardous wastes into harmless products. , Some microorganisms have been reported capable of completely mineralizing 4-CP to the harmless CO 2 when coupled with denitrification . The practical drawbacks include needing long acclimation and residence times …”

Section: Introductionmentioning

confidence: 99%

Para-Chlorophenol (4-CP) Removal by a Palladium-Coated Biofilm: Coupling Catalytic Dechlorination and Microbial Mineralization via Denitrification

Long

Zheng

et al. 2021

Environ. Sci. Technol.

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Rapid dechlorination and full mineralization of para-chlorophenol (4-CP), a toxic contaminant, are unfulfilled goals in water treatment. Means to achieve both goals stem from the novel concept of coupling catalysis by palladium nanoparticles (PdNPs) with biodegradation in a biofilm. Here, we demonstrate that a synergistic version of the hydrogen (H 2 )-based membrane biofilm reactor (MBfR) enabled simultaneous removals of 4-CP and cocontaminating nitrate. In situ generation of PdNPs within the MBfR biofilm led to rapid 4-CP reductive dechlorination, with >90% selectivity to more bioavailable cyclohexanone. Then, the biofilm mineralized the cyclohexanone by utilizing it as a supplementary electron donor to accelerate nitrate reduction. Long-term operation of the Pd-MBfR enriched the microbial community in cyclohexanone degraders within Clostridium, Chryseobacterium, and Brachymonas. In addition, the PdNP played an important role in accelerating nitrite reduction; while NO 3 − reduction to NO 2 − was entirely accomplished by bacteria, NO 2 − reduction to N 2 was catalyzed by PdNPs and bacterial reductases. This study documents a promising option for efficient and complete remediation of halogenated organics and nitrate by the combined action of PdNP and bacterial catalysis.

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Section: Introductionmentioning

confidence: 99%

Para-Chlorophenol (4-CP) Removal by a Palladium-Coated Biofilm: Coupling Catalytic Dechlorination and Microbial Mineralization via Denitrification

Long

Zheng

et al. 2021

Environ. Sci. Technol.

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“…Carbon cloth electrodes (projected area, 5 cm × 3 cm; reaction surface, 30 cm 2 from W1S1010, Ce Tech Co., Ltd, Taiwan) were placed in both the anodic and cathodic chambers. An external resistance (R) of 1000 Ω, which was applied in our previous study, 23 connected the two electrodes using copper wires (Figure 1). The MFCs were cultivated by sequencing batch models at 35°C with static conditions (without mixing).…”

Section: Methodsmentioning

confidence: 99%

Exploring the effect of attractive and repulsive magnetic field on electricity generation and microbial community in microbial fuel cells

Lay

Deng

Chang

2021

Intl J of Energy Research

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External magnetic field technology enhances microbial electrochemical reactions in biological processes. This study added Neodymium-Iron-Boron magnets to the outside of a double-chamber cubic microbial fuel cell (MFC) to explore the attractive or repulsive magnetic field effects at various intensities (0, 60, and 120 mT) on MFC performance. The results show that an extra 120 mT repulsive magnetic field can generate a peak power density of 144 mW/m 2 and a maximum current density of 1558 mA/m 2 . This value is 45 and 8 times higher, respectively, compared without adding the magnetic field. Moreover, adding 120 mT repulsive magnetic field can increase coulombic efficiency (CE) to 63.0%, which is higher than the CE of 25.9% without magnetic field addition. Taxonomy profiling classification results show that Geobacter and Pseudomonas, which can achieve e-pili and redox mediators, were the domain microorganism community. Magnetic fields enhance the electron movement efficiency through extracellular electron transfer mechanisms, including e-pili and redox mediators provided by the exoelectrogenic microorganism to enlarge the chemical oxygen demand removal efficiency and CE value as well as increase the electron transfer probability to the electrode.

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“…The addition of glucose and penicillin as cosubstrate in the anodic chamber of MFC had resulted in enhancing the metabolism of microbial communities due to the availability of sufficient carbon from the cosubstrate; as a result, the rate of electron transfer was improved and consequently enhanced the output power [79]. On the other hand, when acetate was used as cosubstrate along with 4-chlorophenol (CP) as substrate, the removal rate of CP was increased from about 53.7% to 93.7% with 12 h of operational time and power density also increased by fourfolds compared to MFC operated without acetate [80]. Thus, the incorporation of cosubstrates along with ECs as substrate or vice-versa could result in better removal of these pollutants with concomitant improved power production; thereby, presenting a close link between metabolic activity of microbes and composition of substrate in BES.…”

Section: Type Of Anolytementioning

confidence: 99%

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

et al. 2021

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Bioelectrochemical systems (BESs) are a unique group of wastewater remediating technology that possesses the added advantage of valuable recovery with concomitant wastewater treatment. Moreover, due to the application of robust microbial biocatalysts in BESs, effective removal of emerging contaminants (ECs) can be accomplished in these BESs. Thus, this review emphasizes the recent demonstrations pertaining to the removal of complex organic pollutants of emerging concern present in wastewater through BES.Owing to the recalcitrant nature of these pollutants, they are not effectively removed through conventional wastewater treatment systems and thereby are discharged into the environment without proper treatment. Application of BES in terms of ECs removal and degradation mechanism along with valuables that can be recovered are discussed. Moreover, the factors affecting the performance of BES, like biocatalyst, substrate, salinity, and applied potential are also summarized. In addition, the present review also elucidates the occurrence and toxic nature of ECs as well as future recommendations pertaining to the commercialization of this BES technology for the removal of ECs from wastewater. Therefore, the present review intends to aid the researchers in developing more efficient BESs for the removal of ECs from wastewater.

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Co-substrate strategy for improved power production and chlorophenol degradation in a microbial fuel cell

Cited by 46 publications

References 54 publications

Para-Chlorophenol (4-CP) Removal by a Palladium-Coated Biofilm: Coupling Catalytic Dechlorination and Microbial Mineralization via Denitrification

Para-Chlorophenol (4-CP) Removal by a Palladium-Coated Biofilm: Coupling Catalytic Dechlorination and Microbial Mineralization via Denitrification

Exploring the effect of attractive and repulsive magnetic field on electricity generation and microbial community in microbial fuel cells

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

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