The use of bioelectrochemical systems in environmental remediation of xenobiotics: a review

Fernando, Eustace; Keshavarz, T.; Kyazze, Godfrey

doi:10.1002/jctb.5848

Cited by 47 publications

(20 citation statements)

References 66 publications

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“…However, when used for the purpose of decomposition, the fPFC can provide larger power densities from the degradation of MB (Figure S7, Supporting Information) . The fPFC also provides comparable energy output to microbial cells in the decomposition of other dyes . A comparison of power generation performance using sweat and organic dye fuels can be found in Table S3 (Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Advanced Biowaste‐Based Flexible Photocatalytic Fuel Cell as a Green Wearable Power Generator

Lui

Jiang

Lenos

et al. 2016

Adv Materials Technologies

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This study designs a wearable power generator from a flexible, photocatalytic fuel cell (fPFC) using various biowaste sources (lactic acid, ethanol, methanol, urea, glycerol, and glucose) as fuel. The fPFC uses light irradiation and the decomposition of biowaste to generate electrical power under both flat and bending (r = 3 cm) conditions. When employed as a sweat band, the fPFC generates a maximum power 4.0 mW cm−2 g−1 from human sweat. The wearable fPFC is able to overcome many of the disadvantages of wearable microbial and enzymatic cells while providing comparable if not superior power density.

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Section: Resultsmentioning

confidence: 99%

Advanced Biowaste‐Based Flexible Photocatalytic Fuel Cell as a Green Wearable Power Generator

Lui

Jiang

Lenos

et al. 2016

Adv Materials Technologies

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“…These systems currently are being studied for a wide range of potential applications such as recalcitrant pollutant removal, chemical synthesis, resource recovery and biosensors . For example, reduction of hexavalent chromium, ammonia recovery, remediation of xenobiotics, remediation of toxic metal contaminated soil, sulfate reduction or polishing effluents of anaerobic digesters are some of the applications reported recently for BES. Moreover, the generation of different products such as electricity, hydrogen, methane, biofuels, desalinated water or high‐value chemical products already has been reported.…”

Section: Introductionmentioning

confidence: 99%

Repeatability of low scan rate cyclic voltammetry in bioelectrochemical systems and effects on their performance

Ruiz

Baeza

Montpart

et al. 2020

J of Chemical Tech & Biotech

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Background Cyclic voltammetry (CV) has become a standard tool in the study of bioelectrochemical systems (BES) because it is a nondestructive technique that provides useful information on the electron transfer capacity of these systems. When applied to the large‐surface electrodes typically found in BES, the scan rate must be severely diminished or otherwise the capacitive current masks the faradaic current. Decreasing the scan rate results in an increase in the duration of the experiments, which can lead to a significant alteration of the initial system conditions. Results The repeatability of low scan rate cyclic voltammetry (LSCV) in air cathode microbial fuel cells (AC‐MFCs) operating in batch mode was examined. Consecutive LSCVs at 0.1 mV s−1 were recorded with and without prior renewal of the culture medium. Significant deviations in CV replicates were observed when the medium was not replaced (as high as 40% of maximum intensity). These deviations decreased (<18%) when the medium was refreshed, indicating that significant changes in the culture medium composition occurred during LSCVs. Additional electrochemical tests showed that the peak in the forward scan was probably the result of an accumulation of charge in the anodic system. Conclusion LSCV can affect the response of AC‐MFCs working in batch mode and cast doubt on the repeatability of these experiments, observing differences as high as 40% in maximum intensity. Renewing the culture medium is recommended to improve the repeatability of LSCV replicates. © 2020 Society of Chemical Industry

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“…In the design of a remediation activity of a wide polluted area, geophysical surveys are often associated with hydrogeological surveys and drilling and coring campaigns, to assess the hydrology, geology, hydrogeological settings, and the contamination level. Nowadays, the main oil clean-up methodologies refer to bioremediation [2], which exploits the activity of microorganisms or plants 2 of 17 to degrade or accumulate pollutants. A previous laboratory-scale study showed that biostimulated indigenous microorganisms can successfully remove diesel oil from soil [3].…”

Section: Introductionmentioning

confidence: 99%

Time-Domain Reflectometry (TDR) Monitoring at a Lab Scale of Aerobic Biological Processes in a Soil Contaminated by Diesel Oil

et al. 2019

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This study aims to monitor the biological processes ongoing in a hydrocarbon polluted soil. The experiments were carried out at a laboratory scale by measuring the evolution of its geophysical electromagnetic parameters. Time-domain reflectometry (TDR) probes were used to measure dielectric permittivity and electrical conductivity in columns of sandy soil artificially contaminated with diesel oil (V oil /V tot = 0.19). To provide aerobic conditions suitable for the growth of microorganisms, they were hydrated with Mineral Salt Medium for Bacteria. One mesocosm was aerated by injecting air from the bottom of the column, while the other had only natural aeration due to diffusion of air through the soil itself. The monitoring lasted 105 days. Geophysical measurements were supported by microbiological, gas chromatographic analyses, and scanning electron microscope (SEM) images. Air injection heavily influenced the TDR monitoring, probably due to the generation of air bubbles around the probe that interfered with the probe-soil coupling. Therefore, the measurement accuracy of geophysical properties was dramatically reduced in the aerated system, although biological analyses showed that aeration strongly supports microbial activity. In the non-aerated system, a slight (2%) linear decrease of dielectric permittivity was observed over time. Meanwhile, the electrical conductivity initially decreased, then increased from day 20 to day 45, then decreased again by about 30%. We compared these results with other researches in recent literature to explain the complex biological phenomena that can induce variations in electrical parameters in a contaminated soil matrix, from salt depletion to pore clogging.

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The use of bioelectrochemical systems in environmental remediation of xenobiotics: a review

Cited by 47 publications

References 66 publications

Advanced Biowaste‐Based Flexible Photocatalytic Fuel Cell as a Green Wearable Power Generator

Advanced Biowaste‐Based Flexible Photocatalytic Fuel Cell as a Green Wearable Power Generator

Repeatability of low scan rate cyclic voltammetry in bioelectrochemical systems and effects on their performance

Time-Domain Reflectometry (TDR) Monitoring at a Lab Scale of Aerobic Biological Processes in a Soil Contaminated by Diesel Oil

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