A critical review on microbe-electrode interactions towards heavy metal ion detection using microbial fuel cell technology

Noori, Md. T.; Thatikayala, Dayakar; Pant, Deepak; Min, Booki

doi:10.1016/j.biortech.2021.126589

Cited by 32 publications

(4 citation statements)

References 147 publications

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“…Specifically, the removal percentages were around 96% for 63 Cu, 89% for 56 Fe, 55% for 52 Cr, and 17% for 111 Cd. Generally, it is reported that bioactivity, biosorption, and bioaccumulation are important processes in heavy metals' removal in the presence of microbes [40,41]. The determination of the specific mechanisms controlling the heavy metal removal process is not the focus of this research, and there are several recently published articles referring to the removal of heavy metals in MFC systems.…”

Section: Wastewater Treatment By Air-cathode Mfcsmentioning

confidence: 99%

Bioenergy Generation and Wastewater Purification with Li0.95Ta0.76Nb0.19Mg0.15O3 as New Air-Photocathode for MFCs

et al. 2022

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MFC is a promising technology that can be used for simultaneous electricity generation and wastewater treatment. Power energy generation of a ferroelectric cathodic ceramic, Li0.95Ta0.76Nb0.19Mg0.15O3 (LTNMg), has been measured in microbial fuel cells, integrating a single chamber fed by industrial wastewater (CODinitial = 471 mg L−1, and pHinitial = 7.24 at T = 27 °C). In this process, the mixed multicomponent oxide material has been prepared and characterized by XRD, PSD, TEM, and UV-Vis spectroscopy. The catalytic activity has been investigated by COD determination, analysis of heavy metals, and polarization measurement. The results show a high COD reduction efficiency, which reaches 95.70% after a working time of 168 h with a maximal power density of 228 mW m−2. In addition, the maximum value of generated voltage in the open-circuit potential (OCP) of this MFC configuration has been increased from 340 mV in the absence of a light source to 470 mV under irradiation, indicating the presence of a promoting photocatalytic effect of LTNMg, which improved the process of the cathodic electron transfer inside the MFC device.

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Section: Wastewater Treatment By Air-cathode Mfcsmentioning

confidence: 99%

Bioenergy Generation and Wastewater Purification with Li0.95Ta0.76Nb0.19Mg0.15O3 as New Air-Photocathode for MFCs

et al. 2022

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“…The literature has observed that using metallic electrodes or those with metallic inlays considerably increases the power density and electric current values of the MFCs [23,24]. On the other hand, the FAO (Food and Agriculture Organization of the United Nations) reported that, in 2019, approximately 0.5 billion tons of waste (fruits and vegetables) were produced, generating losses not only in the agricultural stage but also in the settings of plant processing [25]. One of the most harvested and sold fruits is citrus, specifically orange and tangerine, because their use as a medicinal plant, and both its pulp and peel, have great antibacterial potential and other properties [26,27].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Electricity Production Using Avocado Waste

Rojas-Flores,

Vives-Garnique,

Díaz

et al. 2024

Processes

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Agroindustry waste has exponentially increased in recent years, generating economic losses and environmental problems. In addition, new ways to generate sustainable alternative electrical energy are currently being sought to satisfy energy demand. This investigation proposes using avocado waste as fuel for electricity generation in single-chamber MFCs. The avocado waste initially operated with an ambient temperature (22.4 ± 0.01 °C), DO of 2.54 ± 0.01 mg/L, TDS of 1358 ± 1 mg/L and COD of 1487.25 ± 0.01 mg/L. This research managed to generate its maximum voltage (0.861 ± 0.241 V) and current (3.781 ± 0.667 mA) on the fourteenth day, operating at an optimal pH of 7.386 ± 0.147, all with 126.032 ± 8.888 mS/cm of electrical conductivity in the substrate. An internal resistance of 67.683 ± 2.456 Ω was found on day 14 with a PD of 365.16 ± 9.88 mW/cm2 for a CD of 5.744 A/cm2. Micrographs show the formation of porous biofilms on both the anodic and cathodic electrodes. This study gives preliminary results of using avocado waste as fuel, which can provide outstanding solutions to agro-industrial companies dedicated to selling this fruit.

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“…To date, the current uptake in single-chamber MECs using pristine carbon electrodes has been limited in the range of 0.2 to 2.6 A/m 2 (Noori et al 2024b). Therefore, this necessitates improvement in cathode electrodes to enhance biocompatibility and an active surface area for enhanced microbial attachment (Noori et al 2022) and current uptake for high hydrogen production (Cheng and Logan 2007).…”

Section: Introductionmentioning

confidence: 99%

High-rate Biohydrogen Production in Single-Chamber Microbial Electrolysis Cell Using Iron-Sulfide Modified Biocathode

Qing,

Noori,

Min

2024

Preprint

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Microbial electrolysis cells (MEC) can produce hydrogen (H2) at a low energy expense, but H2 production rate is often limited by poor microbe-electrode interaction. This study aimed to enhance the interaction of microbes with a cathode electrode modified with an iron-sulfide (FeS) catalyst in MECs to achieve an efficient hydrogen evolution reaction (HER) and to optimize performance at different substrate concentrations, ranging from 1 g/L to 3 g/L of glucose. The electrochemical analysis revealed FeS a highly active catalyst for HER, surpassing the performance of a 10% platinum (Pt-C)-modified cathode. At 2g/L glucose, MECs with a FeS-modified cathode (MEC-FeS) produced hydrogen at the highest yield of 7.01 mol H2/mol glucose, and the hydrogen production rate was 1.96 ± 0.09 m3/m3•d. The control operations of MEC with a pristine cathode and dark fermentation resulted in a reduced hydrogen yield of 5.83 ± 0.25 mol H2/mol glucose and 2.12 ± 0.1 mol H2/mol glucose, respectively. Moreover, the MEC-FeS achieved a high energy efficiency of 78 ± 5% when compared to the MEC without catalyst (60 ± 5%) and the dark fermentation (24 ± 1%). This study suggests that the utilization of FeS as a cathode catalyst in MECs can ensure high-rate hydrogen generation with optimal substrate concentration, paving the way for efficient upscaling and field application.

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A critical review on microbe-electrode interactions towards heavy metal ion detection using microbial fuel cell technology

Cited by 32 publications

References 147 publications

Bioenergy Generation and Wastewater Purification with Li0.95Ta0.76Nb0.19Mg0.15O3 as New Air-Photocathode for MFCs

Bioenergy Generation and Wastewater Purification with Li0.95Ta0.76Nb0.19Mg0.15O3 as New Air-Photocathode for MFCs

Sustainable Electricity Production Using Avocado Waste

High-rate Biohydrogen Production in Single-Chamber Microbial Electrolysis Cell Using Iron-Sulfide Modified Biocathode

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