General aspects and novel PEMss in microbial fuel cell technology: A review

Vidhyeswari, D.; Surendhar, A.; Bhuvaneshwari, S.

doi:10.1016/j.chemosphere.2022.136454

Cited by 15 publications

(6 citation statements)

References 135 publications

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“…Figure 3b shows the smooth surface of the S/MWCNT−NH 2 −2 PEM. Compared with the original SPEEK PEM in Figure 3a, this hybrid PEM exhibits no obvious defects, which proves that the incorporation of MWCNT−NH 2 particles with SPEEK was successful [30] . Figures 4a and 4b show the AFM images of the original SPEEK PEM and the S/MWCNT−NH 2 −2 PEM, and it is obvious that the roughness of the S/MWCNT−NH 2 −2 PEM (272 nm) is greater than the original PEM (82.7 nm), which suggests that this hybrid PEM can provide more superficial area for the proton transport and results in a better VE of the battery [31] …”

Section: Resultsmentioning

confidence: 82%

Amino–Functionalized Multi–walled Carbon Nanotube/SPEEK Hybrid Proton Exchange Membrane for Iron–chromium Redox Flow Battery**

Bai,

Sun,

Zhu

et al. 2024

Batteries & Supercaps

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In the field of Fe‐Cr redox flow batteries (ICRFBs), the optimal doping ratio of the amino‐functionalized multi‐walled carbon nanotube (MWCNT‐NH2) with SPEEK ion exchange membrane (IEM) is determined to be 2% by series tests. The ICRFB single‐cell containing the S/MWCNT‐NH2‐2 IEM was tested and compared with the Nafion 212 and original SPEEK IEMs. It is worth noting that the single‐cell containing S/MWCNT‐NH2‐2 exhibits a significantly higher coulombic efficiency (CE:96.06%) and energy efficiency (EE:88.68%) under 40 mA cm‐2 than that of the Nafion 212 (EE: 82.83%, CE:88.9%), and different from the original SPEEK IEM, it also exhibits a higher EE (82.04%) than the Nafion 212 (81.09%) at 100 mA cm‐2. During the self‐discharge test, the lower permeability of iron/chromium ions through S/MWCNT‐NH2‐2 IEM also allows for a longer self‐discharge time than the other two single‐cells. Additionally, the single‐cell containing S/MWCNT‐NH2‐2 showed a smaller decay range of EE (from 82.67% to 77.36%) and more discharge capacity retention (48%) than that of the Nafion 212 (EE: from 82.64% to 75.01%, discharge capacity decay: 18%) after 100 cycles, which suggests that the hybrid SPEEK IEM with optimal content of MWCNT‐NH2 has a great potential to replace Nafion IEMs in the large‐scale commercialization of ICRFB.

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Section: Resultsmentioning

confidence: 82%

Amino–Functionalized Multi–walled Carbon Nanotube/SPEEK Hybrid Proton Exchange Membrane for Iron–chromium Redox Flow Battery**

Bai,

Sun,

Zhu

et al. 2024

Batteries & Supercaps

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“…However, the introduction of air to the cathode chamber facilitates the reduction of dissolved oxygen (O 2 ) at the cathode, promoting the flow of electrons from the anode through the external circuit to the cathode, resulting in the production of electrical energy. [2][3][4][5] Compared to other methods of producing energy from organic materials, MFCs have benefits. First, significant conversion efficiencies are possible with direct substrate to electrical conversion.…”

Section: Introductionmentioning

confidence: 99%

“…Bacteria use the anode as bedding where they oxidize organic materials and release electrons under anaerobic conditions inside the anode chamber. However, the introduction of air to the cathode chamber facilitates the reduction of dissolved oxygen (O 2 ) at the cathode, promoting the flow of electrons from the anode through the external circuit to the cathode, resulting in the production of electrical energy 2‐5 . Compared to other methods of producing energy from organic materials, MFCs have benefits.…”

Section: Introductionmentioning

confidence: 99%

Enhancing bioelectricity generation from wastewater in microbial fuel cells using carbon nanomaterials

Attia,

Samer,

Mohamed

et al. 2024

J of Chemical Tech & Biotech

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Background: Microbial fuel cells (MFCs) offer a promising approach for treating wastewater and generating electrical energy simultaneously. However, their implementation in wastewater treatment plants is hindered by the limited electricity generation, often attributed to the electrolyte's high resistance. This study aimed to improve bioelectricity generation in MFCs by adding nanomaterials to the electrolyte to enhance conductivity.Results: Three types of nanomaterials, carbon nanotubes (CNTs), graphitic carbon nitride (g‐C3N4), and reduced graphene oxide (r‐GO), were synthesized and addition to the electrolyte at a concentration of 50 mg in 1.5 L. MFC performance was evaluated, employed a Hydraulic Retention Time (HRT) of 140 h, and compared to a control with no nanomaterials added. The addition of nanomaterials significantly improved MFC performance. Compared to the control, the MFCs with CNTs, g‐C3N4, and r‐GO exhibited: Higher voltage: 1.301 V (CNTs), 1.286 V (g‐C3N4), 1.280 V (r‐GO) vs. 0.570 V (control), Increased power density: 14.11 mW/m3 (CNTs), 13.78 mW/m3 (g‐C3N4), 13.66 mW/m3 (r‐GO) vs. 2.71 mW/m3 (control), Enhanced areal power density: 21.06 mW/m2 (CNTs), 20.57 mW/m2 (g‐C3N4), 20.39 mW/m2 (r‐GO) vs. 4.04 mW/m2 (control), and Improved coulombic efficiency: 19.43% (CNTs), 19.19% (g‐C3N4), 19.11% (r‐GO) vs. 8.54% (control).Conclusion: Incorporating nanomaterials into the MFC electrolyte significantly increased bioelectricity generation by 5.21 times and coulombic efficiency by 2.28 times compared to the control. This improvement is attributed to the high specific surface area of the nanomaterials, which facilitates the adhesion and growth of microorganisms around the anode, enhancing direct electron transfer.This article is protected by copyright. All rights reserved.

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“…As a renewable energy source besides solar, wind, water and hydroelectric energy, biofuels are used as an alternative energy production source today. 1 On the other hand, with the declining fossil fuels and the negative climate change effects have promoted the renewable energy like biodiesel which has some advantages such as high biodegradability and low in toxicity. 2 Recently, Microbial Fuel Cell (MFC) technology has emerged as a sustainable technology that can use organic materials, promising sustainable platform for the production of valuable bio products, as well as the use of energy and pollutant removal in both basic and applied research.…”

Section: Introductionmentioning

confidence: 99%

Effects of pre‐treated sludge on sludge stabilization and electricity generation in microbial fuel cell

Demir

Gümüş

2023

Env Prog and Sustain Energy

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In this study, based on the advantage of having high organic content of sludge both sludge treatment and electricity generation in the microbial fuel cell were investigated. The hydrolysis step of anaerobic digestion which is known as rate‐limiting step was tried to accelerate with the pre‐treatment methods such as Fenton and thermal/alkaline for sludge stabilization in the microbial fuel cell. The chemical oxygen demand and organic matter removal were 53% and 64% in the anaerobic chamber of the microbial fuel cell fed with raw sludge, respectively. In the microbial fuel cell fed with pre‐treated sludge using Fenton Process, these removal efficiencies were found to be 59% and 60%, respectively, while in thermal/alkaline microbial fuel cells were 83.3% and 85%, respectively. The current densities in microbial fuel cells fed with raw sludge, Fenton process sludge and thermal/alkaline sludge were 0.002, 0.221 and 38 mA/cm2, respectively. As a result, it can be concluded that, the microbial fuel cell fed with pre‐treated sludge can be used for both the sludge treatment and the electricity generation by improving the decomposition of organic matter and accelerating the rate‐limiting step in the anaerobic chamber.

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General aspects and novel PEMss in microbial fuel cell technology: A review

Cited by 15 publications

References 135 publications

Amino–Functionalized Multi–walled Carbon Nanotube/SPEEK Hybrid Proton Exchange Membrane for Iron–chromium Redox Flow Battery**

Amino–Functionalized Multi–walled Carbon Nanotube/SPEEK Hybrid Proton Exchange Membrane for Iron–chromium Redox Flow Battery**

Enhancing bioelectricity generation from wastewater in microbial fuel cells using carbon nanomaterials

Effects of pre‐treated sludge on sludge stabilization and electricity generation in microbial fuel cell

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