Integrated air cathode microbial fuel cell-aerobic bioreactor set-up for enhanced bioelectrodegradation of azo dye Acid Blue 29

Khan, M. A.; Li, Da; Tabraiz, Shamas; Shamurad, Burhan; Scott, Keith; Yu, Eileen Hao

doi:10.1016/j.scitotenv.2020.143752

Cited by 46 publications

(6 citation statements)

References 56 publications

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“…These results indicate that the microbial community is affected by environmental substrates and environmental pollution levels ( Kong et al, 2019 ). Because of aeration and SMFC operation, the environmental samples are repaired to a certain extent ( Anawar and Chowdhury, 2020 ; Khan et al, 2021 ). Specialization of the community occurs through the emergence and selection of the most adapted phylotypes, which can be dye-tolerant or decolorizing species ( Yu et al, 2015 ).…”

Section: Resultsmentioning

confidence: 99%

Function-Oriented Graphene Quantum Dots Probe for Single Cell in situ Sorting of Active Microorganisms in Environmental Samples

et al. 2021

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Functional microorganisms play a vital role in removing environmental pollutants because of their diverse metabolic capability. Herein, a function-oriented fluorescence resonance energy transfer (FRET)-based graphene quantum dots (GQDs-M) probe was developed for the specific identification and accurate sorting of azo-degrading functional bacteria in the original location of environmental samples for large-scale culturing. First, nitrogen-doped GQDs (GQDs-N) were synthesized using a bottom-up strategy. Then, a GQDs-M probe was synthesized based on bonding FRET-based GQDs-N to an azo dye, methyl red, and the quenched fluorescence was recovered upon cleavage of the azo bond. Bioimaging confirmed the specific recognition capability of GQDs-M upon incubation with the target bacteria or environmental samples. It is suggested that the estimation of environmental functional microbial populations based on bioimaging will be a new method for rapid preliminary assessment of environmental pollution levels. In combination with a visual single-cell sorter, the target bacteria in the environmental samples could be intuitively screened at the single-cell level in 17 bacterial strains, including the positive control Shewanella decolorationis S12, and were isolated from environmental samples. All of these showed an azo degradation function, indicating the high accuracy of the single-cell sorting strategy using the GQDs-M. Furthermore, among the bacteria isolated, two strains of Bacillus pacificus and Bacillus wiedmannii showed double and triple degradation efficiency for methyl red compared to the positive control (strain S12). This strategy will have good application prospects for finding new species or high-activity species of specific functional bacteria.

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Section: Resultsmentioning

confidence: 99%

Function-Oriented Graphene Quantum Dots Probe for Single Cell in situ Sorting of Active Microorganisms in Environmental Samples

et al. 2021

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“…However, resultant internal resistance multi‐anode SBMFC may be low; it could be due to a decrease in the conductivity of the solution compared with 62nd day. The resultant internal resistance of 45.5 Ω was evaluated by Nyquist plot, and it has been reported above similar study 44 . One more study has been reported about Nyquist plot to calculate charge transfer resistance and solution resistance 45 .…”

Section: Resultsmentioning

confidence: 83%

“…On 41st day, the Nyquist plot was evaluated of resultant internal resistance about 54.81 Ω (Rs = 51.6 Ω and Rct = 3.21) as shown in Figure 9A, whereas at the 62nd day of resultant, internal resistance 5 Ω was evaluated by Nyquist plot, and it has been reported above similar study. 44 One more study has been reported about Nyquist plot to calculate charge transfer resistance and solution resistance. 45 The inclusion of inoculum certainly contributed to ohmic resistance in the multi-anode chamber.…”

Section: Electro-impedance Spectroscopy Analysismentioning

confidence: 99%

Power generation and toluene bioremediation through single chamber benthic microbial fuel cell fed with sugarcane waste as a substrate

Umar

Rafatullah

Khan

et al. 2022

Intl J of Energy Research

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The water polluted with toluene could be treated using a membrane less single chamber benthic microbial fuel cells (SBMFCs) by using sugar cane waste as a substrate producing energy. Toluene oxidizes into intermediate benzoic acid and completely converts into non-toxic carbon dioxide. The BMFC generated a voltage of 0.530 V between 40 and 80 days when the external resistance was 1 kΩ. The highest power density and current density generated about 34.7 mW/m 2 and 120 mA/m 2 within 41 days. Furthermore, toluene remediation rate was 98.22% by BMFC. On the 41st day, redox curves were measured around À0.6 V (forward peak) and À0.5 V (reverse peak) while specific capacitance of 0.141 F/g. The Nyquist plot was fitted equivalent circuit from electroimpedance spectroscopy performed to measure overall internal resistance (54.81 Ω). The scanning electron micrographs showed that pores over multianode surface were improperly spaced, but these pores were for biofilm growth. The 16S rRNA pyro-sequencing results identified the Staphylococcus sp. and Pseudomonas sp. These results showed that BMFC could be used for the power production and the toluene remediation. In this work, sugarcane waste was used as a substrate in a multi-anode system, as well as toluene treatment and energy production with the help of SBMFC without membrane.

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“…135 MFC is a method that produces electricity by using organic matter in wastewater as the substrate. Many recent studies have been published for the removal of Acid Orange (AO5), 136 Active Red 30 (AR 30), 137 reactive brilliant red X-3B, 138 and Acid Blue 29 (AB 29) 139 textile dyes from textile wastewater using Microbial Fuel Cell technique. Another method is Bio photovoltaic (BPV), which uses cyanobacteria or algae to produce electricity by splitting water molecules in a light-dependent manner.…”

Section: Phytoremediation For Biodegradation Of Dyesmentioning

confidence: 99%

Emerging bioremediation technologies for the treatment of textile wastewater containing synthetic dyes: a comprehensive review

Srivastava

Rani

Patle

et al. 2021

J of Chemical Tech & Biotech

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The tremendous increase in human population and industrialization has exacerbated the existing problem of water pollution to a great extent. The textile industry is the major cause of this problem due to its significant use of organic synthetic dyes as coloring materials during the dyeing process. The presence of color in wastewater is a major environmental concern, as these dyes are resistant to degradation by physio-chemical treatments. Bioremediation is an attractive method that can completely degrade these dyes while also being cost-effective. This comprehensive review aims to provide a brief insight into bioremediation based on some of the latest emerging wastewater treatment technologies for the removal of synthetic dyes. Starting with the importance of decolorization of synthetic dyes and their environmental impacts, different physio-chemical treatment technologies are analyzed with a special emphasis on their limitations. The bioremediation of textile wastewater with detailed biodegradation mechanisms using different bacterial species (bacteria, fungal, algae, enzyme, and mixed culture) under aerobic and anaerobic conditions is thoroughly discussed. In this article, the major factors affecting the implementation of biological treatment are explained. In addition, the latest emerging treatment technologies, such as nano-bio materials, genetic engineering, phytoremediation, electro-bioremediation (microbial electrochemistry technology, MET), and integrated/hybrid technologies (such as biological processes with physio-chemical processes, electro-coagulation, adsorption, ultra-filtration, membrane, and advanced oxidation) are critically reviewed; their challenges and the future perspectives in textile wastewater treatment are also highlighted.

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Integrated air cathode microbial fuel cell-aerobic bioreactor set-up for enhanced bioelectrodegradation of azo dye Acid Blue 29

Cited by 46 publications

References 56 publications

Function-Oriented Graphene Quantum Dots Probe for Single Cell in situ Sorting of Active Microorganisms in Environmental Samples

Function-Oriented Graphene Quantum Dots Probe for Single Cell in situ Sorting of Active Microorganisms in Environmental Samples

Power generation and toluene bioremediation through single chamber benthic microbial fuel cell fed with sugarcane waste as a substrate

Emerging bioremediation technologies for the treatment of textile wastewater containing synthetic dyes: a comprehensive review

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