Simultaneous nitrification, denitrification and electricity recovery of Halomonas strains in single chamber microbial fuel cells for seawater sewage treatment

Liu, Weifeng; Wu, Yaoting

doi:10.1016/j.jece.2021.106761

Cited by 21 publications

(2 citation statements)

References 55 publications

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“…graphite or carbon brushes [69,110,[164][165][166][167][168][169] and graphite granules [34,66,139,142,144,[170][171][172]67,90,108,109,121,125,126,136]. Composites materials were also used to increase the performance, for example carbon felt/multiwall carbon nanotube composite [123], coated carbon materials [140,141,173,174] or layered air-cathode [175]. Different carbon materials can favor development of different microbial communities [176].…”

Section: Electrode Materialsmentioning

confidence: 99%

Challenges and applications of nitrate-reducing microbial biocathodes

Rogińska

Philippon

Hoareau

et al. 2023

Bioelectrochemistry

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Section: Electrode Materialsmentioning

confidence: 99%

Challenges and applications of nitrate-reducing microbial biocathodes

Rogińska

Philippon

Hoareau

et al. 2023

Bioelectrochemistry

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“…Overall bacterial community structure at the genus level isolated from reactors containing TBZ was predominantly composed of Halomonas species (75%). These species were previously cited as electroactive bacteria and able to grow in high levels of salinity and possess particular electrochemical properties (Askri et al, 2019;Uma Maheswari et al, 2019;Liu and Wu, 2021).…”

Section: Frontiers In Energy Researchmentioning

confidence: 99%

Tunisian hypersaline sediments to set up suitable halotolerant microbial bioanodes for electrostimulated biodegradation of thiabendazole

et al. 2022

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This study investigated for the first time the performance of microbial halotolerant bioanodes designed from two Tunisian Hypersaline Sediments (THS) for simultaneous electrostimulated biodegradation of synthetic fruit packaging wastewater containing thiabendazole (TBZ), and recovery of an anodic current signal. Halotolerant bioanodes formation has been conducted on 6 cm2 carbon felt electrodes polarized at −0.1Vvs Saturated Calomel Electrode (SCE), inoculated with 80% (v:v) of synthetic wastewater containing 50 ppm of irradiated or not irradiated TBZ and 20% (v:v) of THS for a period of 7 days. Microbial bioanodes, and the corresponding anolytes, i.e., synthetic wastewater, were studied comparatively by electrochemical, microscopic, spectroscopic, molecular and microbial ecology tools. Despite the low maximum current densities recorded in the 50 ppm TBZ runs (3.66 mA/m2), more than 80% of the TBZ was degraded when non-irradiated TBZ (nTBZ) was used as the sole carbon energy by the microorganisms. Nevertheless, the degradation in the presence of irradiated TBZ (iTBZ) was greatly reduced by increasing the irradiation dose with maximum current density of 0.95 mA/m2 and a degradation rate less than 50% of iTBZ. In addition, chemical changes were observed in TBZ as a result of gamma irradiation and bioelectrochemical degradation. FT-IR and UV-Vis techniques confirmed the degradation of TBZ structural bonds producing novel functional groups. Culture-dependent approach and 16S ribosomal RNA sequencing demonstrated that bacterial community of halotolerant bioanodes formed with nTBZ were dominated by Proteobacteria (75%) and Firmicutes (25%). At species level, enrichment of Halomonas smyrnensis, Halomonas halophila, Halomonas salina, Halomonasor ganivorans and Halomonas koreensis on carbon felt electrodes were correlated with maximal current production and nTBZ degradation. As a result, THS halotolerant bacteria, and specifically those from Chott El Djerid (CJ) site certainly have well established application for the electrostimulated microbial biodegradation of fungicide in the real fruit and vegetable processing industries.

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Enhancing sustainability and power generation from sewage‐driven air‐cathode microbial fuel cells through innovative anti‐biofouling spacer and biomass‐derived anode

Almasri,

Barakat,

Irfan

2024

J of Chemical Tech & Biotech

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BackgroundRecently, the concept of the membrane‐less microbial fuel cell (MFC) has gained traction to avoid the high internal resistance that is created upon utilizing conventional membranes. Nevertheless, an overlooked problem arises from the ingress of oxygen from the cathode side into the anolyte solution, fostering the formation of biofilms by aerobic microorganisms on the cathode surface. This biofilm layer poses a formidable impediment, leading to cell disconnection. Moreover, low surface area of conventional anodes is another important issue behind the low power density generation. In this research, a novel approach to circumvent biofilm formation and achieve stable and high‐power‐density output from MFCs by harnessing a commercial antibacterial spacer is introduced.ResultsAir‐cathode, sewage‐driven MFCs showed continuous power generation without the need for external microorganisms. Conversely, the absence of the innovative membrane resulted in a catastrophic power breakdown after 125 h of operation due to the formation of a dense biofilm layer on the cathode. Through the utilization of the proposed membrane strategy, stable power density output of 100 ± 8, 135 ± 11 and 142 ± 10 mW m−2 with carbon cloth, carbon paper and carbon felt anodes, respectively, was achieved. Moreover, a novel anode is introduced from graphitization of grape tree branches. The proposed anode could increase the generated power to 516 ± 17 mW m−2 from the sewage‐driven air‐cathode MFC, more than three times compared to the best conventional anode, carbon felt.ConclusionThis study provides significant solutions for sustainability, low‐performance and high‐cost problems of microbial fuel cells. © 2024 Society of Chemical Industry (SCI).

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Simultaneous nitrification, denitrification and electricity recovery of Halomonas strains in single chamber microbial fuel cells for seawater sewage treatment

Cited by 21 publications

References 55 publications

Challenges and applications of nitrate-reducing microbial biocathodes

Challenges and applications of nitrate-reducing microbial biocathodes

Tunisian hypersaline sediments to set up suitable halotolerant microbial bioanodes for electrostimulated biodegradation of thiabendazole

Enhancing sustainability and power generation from sewage‐driven air‐cathode microbial fuel cells through innovative anti‐biofouling spacer and biomass‐derived anode

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