The Experts below are selected from a list of 2079 Experts worldwide ranked by ideXlab platform
Boryann Chen - One of the best experts on this subject based on the ideXlab platform.
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degradation and biotoxicity of azo dyes using indigenous bacteria acclimated microbial fuel cells mfcs
Process Biochemistry, 2021Co-Authors: Arjay Christopher Tacas, Chungchuan Hsueh, Powei Tsai, Lemmuel L Tayo, Shuyun Sun, Boryann ChenAbstract:Abstract This study explored a bioenergy platform of biodegradability and toxicity evaluation through microbial fuel cells (MFCs) modules for simultaneous decolorization and Bioelectricity generation. The most appropriate decolorizer consortia NIU pond exhibited the extent of decolorization: Sunset Yellow FCF (93 %), Allura Red (96.6 %), and Tartrazine (91.41 %) in 3, 8, 12 h respectively. The ranking for Bioelectricity generation in MFCs (unit: mW m−2) (Sunset Yellow FCF Degradation) was hot spring water (46.42) > hot spring soil (22.17) > NIU pond (17.75) > NIU soil (7.89). In the presence of the dye, power density was increased by 88 %, 84 % and 27 % for NP, HS, and HW, respectively. Acclimation process was inspected in terms of bioenergy-extracting capability to evaluate toxicity potency of model dyes. According to metagenomics analysis upon microbial populations before and after acclimation, indigenous microbial community was only predominated by Pseudomonas monteilii and of Bacillus pumilus. Significant increased biodiversity was evolved under selection of dye stress. After acclimation, community ecology in the consortia contained Klebsiella, Citrobacter, Enterococcus faecalis, Lactobacillus lactis, and Escherichia shigella. Tandem mass spectrometric analysis pointed out sunset yellow ECF was gradually degraded and decolorized intermediates steadily accumulated. MFC modules were promising platforms to select candidate biodecolorizers from microbial populations.
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deciphering synergistic characteristics of redox mediators stimulated echinenone production of gordonia terrae twih01
Journal of Bioscience and Bioengineering, 2018Co-Authors: Boryann Chen, Kuanchieh Huang, Qingjiang Sun, John Chiwei LanAbstract:This first-attempt study tended to decipher synergistic interactions of model redox mediators (RMs) to echinenone production for electrochemically-steered fermentation (ESF). The findings indicated that supplement of RMs could significantly stimulate the production performance of fermentation (e.g., 36% for 4-aminophenol) which was parallel with stimulation of Bioelectricity generation in microbial fuel cells (MFCs) as prior studies mentioned. Although redox mediators could usually enhance electron transport extracellular compartment, the mechanisms of Bioelectricity generation in MFCs and echinenone production in ESF were very likely functioned in the extracellular and the intracellular compartment, respectively. In MFCs, electron transfer towards biofilm anode for Bioelectricity generation must be taken place. However, for ESF echinenone accumulation was very likely occurred in the intracellular compartment, thus electron transfer was predominantly implemented in the intracellular, not the extracellular compartment.
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deciphering electron shuttling characteristics of thionine based textile dyes in microbial fuel cells
Journal of The Taiwan Institute of Chemical Engineers, 2015Co-Authors: Boryann Chen, Peilin Yueh, Ke Han, Lianjie Qin, Chungchuan HsuehAbstract:Abstract Prior studies indicated that OH and/or NH2 substituent containing auxochrome compounds (e.g., 2-aminophenol and 1-amino-2-naphthol) could act as electron shuttles (ESs) to stimulate wastewater decolorization and Bioelectricity generation in microbial fuel cells (MFCs). This study provided first-attempt to disclose how and why thionine-associated textile dyes (i.e., azure A and azure C) could also own such redox-mediating capabilities in MFCs. Due to the presence of iminium part as mediating group, N(CH3)2 or N(CH3)H substituent could effectively mediate electron transport compared to NH2 substituent for Bioelectricity generation in MFCs. For dye-laden wastewater treatment, the presence of electron-mediating textile dyes (e.g., thionine, azure A and azure C) in MFCs is promising to stimulate biodegradation of organics and Bioelectricity generation. With such ESs as stimulants, using MFC as operation strategy would be cost-effective for wastewater treatment as oxidation of organic pollutants could be automatically accelerated.
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exploring redox mediating characteristics of textile dye bearing microbial fuel cells thionin and malachite green
Bioresource Technology, 2014Co-Authors: Boryann Chen, Bin Xu, Chungchuan HsuehAbstract:Abstract Prior studies indicated that biodecolorized intermediates of azo dyes could act as electron shuttles to stimulate wastewater decolorization and Bioelectricity generation (WD&BG) in microbial fuel cells (MFCs). This study tended to explore whether non-azo textile dyes (i.e., thionin and malachite green) could also own such redox-mediating capabilities for WD&BG. Prior findings mentioned that OH and/or NH2 substitute-containing auxochrome compounds (e.g., 2-aminophenol and 1,2-dihydroxybenzene) could effectively mediate electron transport in MFCs for simultaneous WD&BG. This work clearly suggested that the presence of electron-mediating textile dyes (e.g., thionin and malachite green (MG)) in MFCs is promising to stimulate color removal and Bioelectricity generation. That is, using MFCs as operation strategy for wastewater biodecolorization is economically promising in industrial applications due to autocatalytic acceleration of electron-flux for WD&BG in MFCs.
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unveiling characteristics of dye bearing microbial fuel cells for energy and materials recycling redox mediators
International Journal of Hydrogen Energy, 2013Co-Authors: Boryann Chen, Chungchuan Hsueh, Peilin Yueh, Shiqi Liu, Jhao Yin Hung, Yan Qiao, Yumin WangAbstract:Abstract This study disclosed why and how some decolorized intermediates (e.g., 2-aminophenol) could act as electron-shuttling mediator(s) to enhance the capabilities of reductive decolorization and Bioelectricity generation. It also selected several model auxochrome-containing compounds structurally associated to 2AP to explore how chemical structure influenced the feasibility of possible electron shuttles for power producing capabilities in microbial fuel cells (MFCs). The selection criteria of electron-shuttling mediators were suggested for optimal reductive decolorization and Bioelectricity generation in MFCs for practical application.
Venkata S Mohan - One of the best experts on this subject based on the ideXlab platform.
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sustainable power generation from floating macrophytes based ecological microenvironment through embedded fuel cells along with simultaneous wastewater treatment
Bioresource Technology, 2011Co-Authors: Venkata S Mohan, G Mohanakrishna, P ChiranjeeviAbstract:Miniatured floating macrophyte based ecosystem (FME) designed with Eichornia as the major biota was evaluated for Bioelectricity generation and wastewater treatment. Three fuel cell assemblies (non-catalyzed electrodes) embedded in FME were evaluated with domestic sewage and fermented distillery wastewater in continuous mode for 210 days. Fermented distillery effluents from biohydrogen production (dark-fermentation) process exhibited effective power generation with simultaneous waste remediation. Two fuel cell assemblies (A1 and A2) showed effective Bioelectricity generation. Increasing the organic load of wastewater showed good correlation with both power generation (A1, 211.14 mA/m(2); A2, 224.93 mA/m(2)) and wastewater treatment (COD removal, 86.67% and VFA removal 72.32%). Combining A1 and A2 assemblies depicted stabilized performance with respect to current and voltage along with significant decrease in ohmic and activation losses. FME also exhibited effective removal of nitrates, colour and turbidity from wastewater. The studied miniatured ecological system facilitates both energy generation and wastewater treatment with a sustainable perspective.
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solid phase microbial fuel cell smfc for harnessing Bioelectricity from composite food waste fermentation influence of electrode assembly and buffering capacity
Bioresource Technology, 2011Co-Authors: Venkata S Mohan, K ChandrasekharAbstract:Solid phase microbial fuel cells (SMFC; graphite electrodes; open-air cathode) were designed to evaluate the potential of Bioelectricity production by stabilizing composite canteen based food waste. The performance was evaluated with three variable electrode-membrane assemblies. Experimental data depicted feasibility of Bioelectricity generation from solid state fermentation of food waste. Distance between the electrodes and presence of proton exchange membrane (PEM) showed significant influence on the power yields. SMFC-B (anode placed 5 cm from cathode-PEM) depicted good power output (463 mV; 170.81 mW/m(2)) followed by SMFC-C (anode placed 5 cm from cathode; without PEM; 398 mV; 53.41 mW/m(2)). SMFC-A (PEM sandwiched between electrodes) recorded lowest performance (258 mV; 41.8 mW/m(2)). Sodium carbonate amendment documented marked improvement in power yields due to improvement in the system buffering capacity. SMFCs operation also documented good substrate degradation (COD, 76%) along with bio-ethanol production. The operation of SMFC mimicked solid-sate fermentation which might lead to sustainable solid waste management practices.
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composite vegetable waste as renewable resource for Bioelectricity generation through non catalyzed open air cathode microbial fuel cell
Bioresource Technology, 2010Co-Authors: Venkata S Mohan, G Mohanakrishna, P N SarmaAbstract:Abstract Single chambered mediatorless microbial fuel cell (MFC; non-catalyzed electrodes) was operated to evaluate the potential of Bioelectricity generation from the treatment of composite waste vegetables (EWV) extract under anaerobic microenvironment using mixed consortia as anodic biocatalyst. The system was operated with designed synthetic wastewater (DSW; 0.98 kg COD/m3-day) during adaptation phase and later shifted to EWV and operated at three substrate load conditions (2.08, 1.39 and 0.70 kg COD/m3-day). Experimental data illustrated the feasibility of Bioelectricity generation through the utilization of EWV as substrate in MFC. Higher power output (57.38 mW/m2) was observed especially at lower substrate load. The performance of MFC was characterized based on the polarization behavior, cell potentials, cyclic voltammetric analysis and sustainable resistance. MFC operation also documented to stabilize the waste by effective removal of COD (62.86%), carbohydrates (79.84%) and turbidity (55.12%).
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harnessing of Bioelectricity in microbial fuel cell mfc employing aerated cathode through anaerobic treatment of chemical wastewater using selectively enriched hydrogen producing mixed consortia
Fuel, 2008Co-Authors: Venkata S Mohan, G Mohanakrishna, S Srikanth, P N SarmaAbstract:Abstract The possibility of Bioelectricity generation from anaerobic chemical wastewater treatment was evaluated in a microbial fuel cell (MFC) [dual-chambered; mediator less anode; aerated cathode; plain graphite electrodes] employing selectively enriched hydrogen producing (acidogenic) mixed culture. Performance of MFC was evaluated at two organic/substrate loading rates (OLR) (1.165 Kg COD/m 3 -day and 1.404 Kg COD/m 3 -day) in terms of Bioelectricity production and wastewater treatment at ambient pressure and temperature under acidophilic microenvironment (pH 5.5) using non-coated plain graphite electrodes (mediatorless anode; air cathode). Experimental data demonstrated the feasibility of in situ Bioelectricity generation along with wastewater treatment. The performance of MFC with respect to power generation and wastewater treatment was found to depend on the applied OLR. Maximum voltage of 716 mV (2.84 mA; OLR −1.165 kg COD/m 3 -day) and 731 mV (2.97 mA; OLR-1.404 kg COD/m 3 -day) was observed at stable operating conditions. Substrate degradation rate (SDR) of 0.519 Kg COD/m 3 -day and 0.858 Kg COD/m 3 -day was observed at two OLRs studied. Maximum power yield (0.73 W/Kg COD R and 0.49 W Kg/COD R ) and current density (339.87 mA/m 2 and 355.43 mA/m 2 ) was observed at applied 50 Ω resistance. Fuel cell performance was evaluated employing polarization curve (100 Ω–30 KΩ), Coulombic efficiency ( € cb ) and cell potentials along with sustainable power yield at stable phase of fuel cell operation. Designed MFC configuration, adopted operating conditions and used parent inoculum showed positive response.
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Bioelectricity generation from chemical wastewater treatment in mediatorless anode microbial fuel cell mfc using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment
Biochemical Engineering Journal, 2008Co-Authors: Venkata S Mohan, G Mohanakrishna, Purushotham B Reddy, R Saravanan, P N SarmaAbstract:Bioelectricity generation from composite chemical wastewater treatment was evaluated in a dual chambered microbial fuel cell (MFC) [anode chamber (mediatorless; perforated plain graphite electrode); cathode chamber (50 mM potassium ferricyanide [K3Fe(CN)6] in phosphate buffer; pH 7.5; plain graphite electrode)] inoculated with selectively enriched hydrogen (H2) producing mixed culture under acidophilic microenvironment (pH 5.5). Anode chamber, which resembles anaerobic suspended contact reactor was fed with wastewater and operated in absence of artificial mediator at acidic environment to proliferate H2 producing bacteria. Experimental data showed the feasibility of producing Bioelectricity from wastewater treatment, though power production was found to be dependent on the substrate loading rate. Maximum voltage of 271.5 mV (5.43 mA) and 304 mV (6.08 mA) was recorded at operating organic loading rates (OLR) of 1.165 kg COD/(m3 day) and 1.404 kg COD/(m3 day), respectively when measured at 50 Ω external resistors at stable operating conditions. COD removal efficiency of 35.4% (substrate degradation rate (SDR) of 0.412 kg COD/(m3 day)) and 62.9% (SDR, 0.88 kg COD/(m3 day)) was observed at OLRs 1.165 kg COD/(m3 day) and 1.404 kg COD/(m3 day), respectively. Maximum specific power production of 0.163 W/kg CODR (1.165 kg COD/(m3 day); 50 Ω) and 0.198 W/kg CODR (1.404 kg COD/(m3 day); 100 Ω) was observed during stable phase of fuel cell operation. Current density of 747.96 mA/m2 (1.165 kg COD/(m3 day)) and 862.85 mA/m2 (1.404 kg COD/(m3 day)) was documented at 10 Ω. Utilizing chemical wastewater for the production of renewable energy (Bioelectricity) from anaerobic treatment is considered as a feasible, economical and sustainable process.
Chenhui Yang - One of the best experts on this subject based on the ideXlab platform.
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carbon dots fed shewanella oneidensis mr 1 for Bioelectricity enhancement
Nature Communications, 2020Co-Authors: Chenhui Yang, Thomas Boesen, Husnu Aslan, Peng Zhang, Shoujun Zhu, Yong Xiao, Lixiang Chen, Nasar Khan, Yuanlin Wang, Yang LiuAbstract:Bioelectricity generation, by Shewanella oneidensis (S. oneidensis) MR-1, has become particularly alluring, thanks to its extraordinary prospects for energy production, pollution treatment, and biosynthesis. Attempts to improve its technological output by modification of S. oneidensis MR-1 remains complicated, expensive and inefficient. Herein, we report on the augmentation of S. oneidensis MR-1 with carbon dots (CDs). The CDs-fed cells show accelerated extracellular electron transfer and metabolic rate, with increased intracellular charge, higher adenosine triphosphate level, quicker substrate consumption and more abundant extracellular secretion. Meanwhile, the CDs promote cellular adhesion, electronegativity, and biofilm formation. In bioelectrical systems the CDs-fed cells increase the maximum current value, 7.34 fold, and power output, 6.46 fold. The enhancement efficacy is found to be strongly dependent on the surface charge of the CDs. This work demonstrates a simple, cost-effective and efficient route to improve Bioelectricity generation of S. oneidensis MR-1, holding promise in all relevant technologies.
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carbon dots fed shewanella oneidensis mr 1 for Bioelectricity enhancement
Nature Communications, 2020Co-Authors: Chenhui Yang, Thomas Boesen, Husnu Aslan, Peng Zhang, Yong Xiao, Lixiang Chen, Nasar Khan, Yuanlin Wang, Lei Wang, Yujie FengAbstract:Bioelectricity generation, by Shewanella oneidensis (S. oneidensis) MR-1, has become particularly alluring, thanks to its extraordinary prospects for energy production, pollution treatment, and biosynthesis. Attempts to improve its technological output by modification of S. oneidensis MR-1 remains complicated, expensive and inefficient. Herein, we report on the augmentation of S. oneidensis MR-1 with carbon dots (CDs). The CDs-fed cells show accelerated extracellular electron transfer and metabolic rate, with increased intracellular charge, higher adenosine triphosphate level, quicker substrate consumption and more abundant extracellular secretion. Meanwhile, the CDs promote cellular adhesion, electronegativity, and biofilm formation. In bioelectrical systems the CDs-fed cells increase the maximum current value, 7.34 fold, and power output, 6.46 fold. The enhancement efficacy is found to be strongly dependent on the surface charge of the CDs. This work demonstrates a simple, cost-effective and efficient route to improve Bioelectricity generation of S. oneidensis MR-1, holding promise in all relevant technologies. Bacterial fuel cells have generated attention with the prospect of green energy production; current research is focused on optimising the system to improve efficiency. Here, the authors report on the feeding of carbon dots to S. oneidensis MR-1 to enhance metabolic activity and bioelectric generation.
P N Sarma - One of the best experts on this subject based on the ideXlab platform.
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composite vegetable waste as renewable resource for Bioelectricity generation through non catalyzed open air cathode microbial fuel cell
Bioresource Technology, 2010Co-Authors: Venkata S Mohan, G Mohanakrishna, P N SarmaAbstract:Abstract Single chambered mediatorless microbial fuel cell (MFC; non-catalyzed electrodes) was operated to evaluate the potential of Bioelectricity generation from the treatment of composite waste vegetables (EWV) extract under anaerobic microenvironment using mixed consortia as anodic biocatalyst. The system was operated with designed synthetic wastewater (DSW; 0.98 kg COD/m3-day) during adaptation phase and later shifted to EWV and operated at three substrate load conditions (2.08, 1.39 and 0.70 kg COD/m3-day). Experimental data illustrated the feasibility of Bioelectricity generation through the utilization of EWV as substrate in MFC. Higher power output (57.38 mW/m2) was observed especially at lower substrate load. The performance of MFC was characterized based on the polarization behavior, cell potentials, cyclic voltammetric analysis and sustainable resistance. MFC operation also documented to stabilize the waste by effective removal of COD (62.86%), carbohydrates (79.84%) and turbidity (55.12%).
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harnessing of Bioelectricity in microbial fuel cell mfc employing aerated cathode through anaerobic treatment of chemical wastewater using selectively enriched hydrogen producing mixed consortia
Fuel, 2008Co-Authors: Venkata S Mohan, G Mohanakrishna, S Srikanth, P N SarmaAbstract:Abstract The possibility of Bioelectricity generation from anaerobic chemical wastewater treatment was evaluated in a microbial fuel cell (MFC) [dual-chambered; mediator less anode; aerated cathode; plain graphite electrodes] employing selectively enriched hydrogen producing (acidogenic) mixed culture. Performance of MFC was evaluated at two organic/substrate loading rates (OLR) (1.165 Kg COD/m 3 -day and 1.404 Kg COD/m 3 -day) in terms of Bioelectricity production and wastewater treatment at ambient pressure and temperature under acidophilic microenvironment (pH 5.5) using non-coated plain graphite electrodes (mediatorless anode; air cathode). Experimental data demonstrated the feasibility of in situ Bioelectricity generation along with wastewater treatment. The performance of MFC with respect to power generation and wastewater treatment was found to depend on the applied OLR. Maximum voltage of 716 mV (2.84 mA; OLR −1.165 kg COD/m 3 -day) and 731 mV (2.97 mA; OLR-1.404 kg COD/m 3 -day) was observed at stable operating conditions. Substrate degradation rate (SDR) of 0.519 Kg COD/m 3 -day and 0.858 Kg COD/m 3 -day was observed at two OLRs studied. Maximum power yield (0.73 W/Kg COD R and 0.49 W Kg/COD R ) and current density (339.87 mA/m 2 and 355.43 mA/m 2 ) was observed at applied 50 Ω resistance. Fuel cell performance was evaluated employing polarization curve (100 Ω–30 KΩ), Coulombic efficiency ( € cb ) and cell potentials along with sustainable power yield at stable phase of fuel cell operation. Designed MFC configuration, adopted operating conditions and used parent inoculum showed positive response.
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Bioelectricity generation from chemical wastewater treatment in mediatorless anode microbial fuel cell mfc using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment
Biochemical Engineering Journal, 2008Co-Authors: Venkata S Mohan, G Mohanakrishna, Purushotham B Reddy, R Saravanan, P N SarmaAbstract:Bioelectricity generation from composite chemical wastewater treatment was evaluated in a dual chambered microbial fuel cell (MFC) [anode chamber (mediatorless; perforated plain graphite electrode); cathode chamber (50 mM potassium ferricyanide [K3Fe(CN)6] in phosphate buffer; pH 7.5; plain graphite electrode)] inoculated with selectively enriched hydrogen (H2) producing mixed culture under acidophilic microenvironment (pH 5.5). Anode chamber, which resembles anaerobic suspended contact reactor was fed with wastewater and operated in absence of artificial mediator at acidic environment to proliferate H2 producing bacteria. Experimental data showed the feasibility of producing Bioelectricity from wastewater treatment, though power production was found to be dependent on the substrate loading rate. Maximum voltage of 271.5 mV (5.43 mA) and 304 mV (6.08 mA) was recorded at operating organic loading rates (OLR) of 1.165 kg COD/(m3 day) and 1.404 kg COD/(m3 day), respectively when measured at 50 Ω external resistors at stable operating conditions. COD removal efficiency of 35.4% (substrate degradation rate (SDR) of 0.412 kg COD/(m3 day)) and 62.9% (SDR, 0.88 kg COD/(m3 day)) was observed at OLRs 1.165 kg COD/(m3 day) and 1.404 kg COD/(m3 day), respectively. Maximum specific power production of 0.163 W/kg CODR (1.165 kg COD/(m3 day); 50 Ω) and 0.198 W/kg CODR (1.404 kg COD/(m3 day); 100 Ω) was observed during stable phase of fuel cell operation. Current density of 747.96 mA/m2 (1.165 kg COD/(m3 day)) and 862.85 mA/m2 (1.404 kg COD/(m3 day)) was documented at 10 Ω. Utilizing chemical wastewater for the production of renewable energy (Bioelectricity) from anaerobic treatment is considered as a feasible, economical and sustainable process.
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Bioelectricity production from wastewater treatment in dual chambered microbial fuel cell mfc using selectively enriched mixed microflora effect of catholyte
Bioresource Technology, 2008Co-Authors: Venkata S Mohan, G Mohanakrishna, R Saravanan, Veer S Raghavulu, P N SarmaAbstract:Abstract The performance of aerated and ferricyanide catholytes on the Bioelectricity production was evaluated in dual chambered microbial fuel cell (MFC) (mediatroless anode; graphite electrodes) employing selectively enriched H 2 producing mixed consortia as anodic inoculum. Two MFCs with aerated catholyte (MFC AC ) and ferricyanide catholyte (MFC FC ) were operated separately to elucidate the difference in power generation potential and carbon removal efficiency under similar operating conditions [ambient pressure; room temperature (28 ± 2 °C); acidophilic microenvironment (pH 6)]. The experimental data demonstrated the feasibility of in situ Bioelectricity generation along with wastewater treatment. Effective power generation and substrate removal efficiency was documented in the fuel cell operated with ferricyanide catholyte (586 mV; 2.37 mA; 0.559 kg COD/m 3 day) than aerated catholyte (572 mV; 1.68 mA; 0.464 kg COD/m 3 day). Maximum power yield (0.635 W/kg COD R and 0.440 W/kg COD R ) and current density (222.59 mA/m 2 and 190.28 mA/m 2 ) was observed at 100 Ω resistor with ferricyanide and aerated catholytes, respectively. The study documented both wastewater treatment and electricity production through direct conversion of H 2 in a single system.
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Bioelectricity production from wastewater treatment in dual chambered microbial fuel cell mfc using selectively enriched mixed microflora effect of catholyte
Bioresource Technology, 2008Co-Authors: Venkata S Mohan, G Mohanakrishna, R Saravanan, Veer S Raghavulu, P N SarmaAbstract:The performance of aerated and ferricyanide catholytes on the Bioelectricity production was evaluated in dual chambered microbial fuel cell (MFC) (mediatroless anode; graphite electrodes) employing selectively enriched H(2) producing mixed consortia as anodic inoculum. Two MFCs with aerated catholyte (MFC(AC)) and ferricyanide catholyte (MFC(FC)) were operated separately to elucidate the difference in power generation potential and carbon removal efficiency under similar operating conditions [ambient pressure; room temperature (28+/-2 degrees C); acidophilic microenvironment (pH 6)]. The experimental data demonstrated the feasibility of in situ Bioelectricity generation along with wastewater treatment. Effective power generation and substrate removal efficiency was documented in the fuel cell operated with ferricyanide catholyte (586 mV; 2.37 mA; 0.559 kg COD/m(3) day) than aerated catholyte (572 mV; 1.68 mA; 0.464 kg COD/m(3) day). Maximum power yield (0.635 W/kg COD(R) and 0.440 W/kg COD(R)) and current density (222.59 mA/m(2) and 190.28 mA/m(2)) was observed at 100 Omega resistor with ferricyanide and aerated catholytes, respectively. The study documented both wastewater treatment and electricity production through direct conversion of H(2) in a single system.
Chungchuan Hsueh - One of the best experts on this subject based on the ideXlab platform.
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degradation and biotoxicity of azo dyes using indigenous bacteria acclimated microbial fuel cells mfcs
Process Biochemistry, 2021Co-Authors: Arjay Christopher Tacas, Chungchuan Hsueh, Powei Tsai, Lemmuel L Tayo, Shuyun Sun, Boryann ChenAbstract:Abstract This study explored a bioenergy platform of biodegradability and toxicity evaluation through microbial fuel cells (MFCs) modules for simultaneous decolorization and Bioelectricity generation. The most appropriate decolorizer consortia NIU pond exhibited the extent of decolorization: Sunset Yellow FCF (93 %), Allura Red (96.6 %), and Tartrazine (91.41 %) in 3, 8, 12 h respectively. The ranking for Bioelectricity generation in MFCs (unit: mW m−2) (Sunset Yellow FCF Degradation) was hot spring water (46.42) > hot spring soil (22.17) > NIU pond (17.75) > NIU soil (7.89). In the presence of the dye, power density was increased by 88 %, 84 % and 27 % for NP, HS, and HW, respectively. Acclimation process was inspected in terms of bioenergy-extracting capability to evaluate toxicity potency of model dyes. According to metagenomics analysis upon microbial populations before and after acclimation, indigenous microbial community was only predominated by Pseudomonas monteilii and of Bacillus pumilus. Significant increased biodiversity was evolved under selection of dye stress. After acclimation, community ecology in the consortia contained Klebsiella, Citrobacter, Enterococcus faecalis, Lactobacillus lactis, and Escherichia shigella. Tandem mass spectrometric analysis pointed out sunset yellow ECF was gradually degraded and decolorized intermediates steadily accumulated. MFC modules were promising platforms to select candidate biodecolorizers from microbial populations.
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deciphering electron shuttling characteristics of thionine based textile dyes in microbial fuel cells
Journal of The Taiwan Institute of Chemical Engineers, 2015Co-Authors: Boryann Chen, Peilin Yueh, Ke Han, Lianjie Qin, Chungchuan HsuehAbstract:Abstract Prior studies indicated that OH and/or NH2 substituent containing auxochrome compounds (e.g., 2-aminophenol and 1-amino-2-naphthol) could act as electron shuttles (ESs) to stimulate wastewater decolorization and Bioelectricity generation in microbial fuel cells (MFCs). This study provided first-attempt to disclose how and why thionine-associated textile dyes (i.e., azure A and azure C) could also own such redox-mediating capabilities in MFCs. Due to the presence of iminium part as mediating group, N(CH3)2 or N(CH3)H substituent could effectively mediate electron transport compared to NH2 substituent for Bioelectricity generation in MFCs. For dye-laden wastewater treatment, the presence of electron-mediating textile dyes (e.g., thionine, azure A and azure C) in MFCs is promising to stimulate biodegradation of organics and Bioelectricity generation. With such ESs as stimulants, using MFC as operation strategy would be cost-effective for wastewater treatment as oxidation of organic pollutants could be automatically accelerated.
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exploring redox mediating characteristics of textile dye bearing microbial fuel cells thionin and malachite green
Bioresource Technology, 2014Co-Authors: Boryann Chen, Bin Xu, Chungchuan HsuehAbstract:Abstract Prior studies indicated that biodecolorized intermediates of azo dyes could act as electron shuttles to stimulate wastewater decolorization and Bioelectricity generation (WD&BG) in microbial fuel cells (MFCs). This study tended to explore whether non-azo textile dyes (i.e., thionin and malachite green) could also own such redox-mediating capabilities for WD&BG. Prior findings mentioned that OH and/or NH2 substitute-containing auxochrome compounds (e.g., 2-aminophenol and 1,2-dihydroxybenzene) could effectively mediate electron transport in MFCs for simultaneous WD&BG. This work clearly suggested that the presence of electron-mediating textile dyes (e.g., thionin and malachite green (MG)) in MFCs is promising to stimulate color removal and Bioelectricity generation. That is, using MFCs as operation strategy for wastewater biodecolorization is economically promising in industrial applications due to autocatalytic acceleration of electron-flux for WD&BG in MFCs.
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unveiling characteristics of dye bearing microbial fuel cells for energy and materials recycling redox mediators
International Journal of Hydrogen Energy, 2013Co-Authors: Boryann Chen, Chungchuan Hsueh, Peilin Yueh, Shiqi Liu, Jhao Yin Hung, Yan Qiao, Yumin WangAbstract:Abstract This study disclosed why and how some decolorized intermediates (e.g., 2-aminophenol) could act as electron-shuttling mediator(s) to enhance the capabilities of reductive decolorization and Bioelectricity generation. It also selected several model auxochrome-containing compounds structurally associated to 2AP to explore how chemical structure influenced the feasibility of possible electron shuttles for power producing capabilities in microbial fuel cells (MFCs). The selection criteria of electron-shuttling mediators were suggested for optimal reductive decolorization and Bioelectricity generation in MFCs for practical application.
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assessment upon azo dye decolorization and Bioelectricity generation by proteus hauseri
Bioresource Technology, 2010Co-Authors: Boryann Chen, Chungchuan Hsueh, Mengmeng Zhang, Changtang Chang, Yongtao Ding, Kaelong Lin, Chyowsan Chiou, Huizhong XuAbstract:Abstract This study explored dye decolorization and Bioelectricity generation of indigenous Proteus hauseri ZMd44 for dye-bearing wastewater treatment. Chemical structures of azo dyes apparently affected the performance of dye biodecolorization. Additions of diazo dye C.I. reactive blue 160 (RBu160) stimulated simultaneous dye decolorization and Bioelectricity generation of ZMd44 in single chamber microbial fuel cells (MFCs). However, high-level additions of RBu160 repressed capabilities of power production in MFC due to competition of electrons used for reductive decolorization. Decolorized intermediates of RBu160-phenyl methadiamine and 5-sulfoanthranilic acid as electron shuttles might mediate electron transport for current generation in MFC.