Enhancing biogas and electricity recovery using an iron-manganese oxide catalyzed bioanode in an integrated submersible microbial fuel cell-anaerobic digester

Ali, Rana Basit; Noori, Md. T.; Lee, Sanghoon; Park, Hee-Deung; Min, Booki

doi:10.1016/j.seta.2022.102276

Cited by 7 publications

(7 citation statements)

References 85 publications

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“…The collected sludge was stored in refrigerated conditions at 4 • C and was diluted with an anaerobic medium (containing the desired amount of ammonium nitrogen, 30, 50, and 150 NH 4 -N mg/L, 0.3 g/L KH 2 PO 4 , 1.0 g/L Na 2 HPO 4 •12H 2 O, 0.5 g/L NaCl, 2.0 g/L NaHCO 3 , 0.1 g/L MgSO 4 •7H 2 O, 0.01 g/L CaCl 2 , and 0.2-0.4 g/L NH 4 Cl, 1ml/L vitamins, and 10 mL/L trace metal solution) in a volume ratio of 50% (v/v). The necessary nutrients for the growth of microbes are included in ammonium solution, as presented in earlier studies [26,27]. The initial properties of sludge in terms of pH, mixed liquor volatile suspended solids, COD, NH 4 -N, and DO were 7.2, 1130 mg/L, 13,480 mg/L, 16 mg/L, and 3.2 mg/L, respectively.…”

Section: Fabrication and Inoculation Of Mec For Sndmentioning

confidence: 99%

Ammonia Removal by Simultaneous Nitrification and Denitrification in a Single Dual-Chamber Microbial Electrolysis Cell

et al. 2022

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Ammonia removal from wastewater was successfully achieved by simultaneous nitrification and denitrification (SND) in a double-chamber microbial electrolysis cell (MEC). The MEC operations at different applied voltages (0.7 to 1.5 V) and initial ammonia concentrations (30 to 150 mg/L) were conducted in order to evaluate their effects on MEC performance in batch mode. The maximum nitrification efficiency of 96.8% was obtained in the anode at 1.5 V, followed by 94.11% at 1.0 V and 87.05% at 0.7. At 1.5 V, the initial ammonia concentration considerably affected the nitrification rate, and the highest nitrification rate constant of 0.1601/h was determined from a first-order linear regression at 30 mg/L ammonium nitrogen. The overall total nitrogen removal efficiency was noted to be 85% via the SND in the MEC operated at an initial ammonium concentration of 50 mg/L and an applied cell voltage of 1.5 V. The MEC operation in continuous mode could remove ammonia (50 mg/L) in a series of anode and cathode chambers at the nitrogen removal rate of 170 g-N/m3.d at an HRT of 15. This study suggests that a standalone dual-chamber MEC can efficiently remove ammonia via the SND process without needing additional organic substrate and aeration, which makes this system viable for field applications.

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Section: Fabrication and Inoculation Of Mec For Sndmentioning

confidence: 99%

Ammonia Removal by Simultaneous Nitrification and Denitrification in a Single Dual-Chamber Microbial Electrolysis Cell

et al. 2022

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“…[ 19 ] Lately, magnetite‐based materials have been of great interest among researchers due to their excellent physical and chemical properties such as being highly biocompatible for microbes, electrically conductive to accelerate electron transfer, high availability, and low cost. [ 20 ] Recently, magnetite was used in an integrated AD‐MES system both as suspended particles to promote interspecies electron transfer and as a cathode catalyst to promote DET for syntrophic methane production and enrichment. For example, the utilization of magnetite (20 m m ) in MES significantly enhanced the substrate removal rate up to 82.5% with a high methane volume recovery of 2529 mL as compared to the control reactor without magnetite.…”

Section: Introductionmentioning

confidence: 99%

Optimum Magnetite–Zeolite Nanoparticles Loading on the Cathode of Microbial Electrochemical–Anaerobic Digestion System for Enhancing Methane Generation

Park,

Noori,

Thatikayala

et al. 2024

Energy Tech

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Microbial electrochemical systems (MESs) can enhance methane production in anaerobic digestion, but their performance is hindered by inadequate electron transfer between the cathode and microbes. Magnetite–zeolite (MZ)‐based catalysts accelerate electron exchange; however, the optimal loading of MZ is crucial for maximizing MES performance. In this study, different loadings of the MZ catalyst ranging from 0 to 2 mg cm−2 on the cathode were evaluated to obtain an optimum loading for maximizing methane recovery from MES. Electrochemical analyses demonstrated enhanced electrochemical reduction kinetics of the cathode with increased MZ loading from 0 to 2 mg cm−2. Among the tested loadings, the MES with 1 mg cm−2 MZ on the cathode exhibited the highest methane production rate at 548 mL L−1 d−1, surpassing other MES operations with 2 and 0.5 mg cm−2 (499 and 434 mL L−1 d−1, respectively). Additionally, the MES with 1 mg cm−2 MZ demonstrated the highest soluble chemical oxygen demand removal efficiency of 87% and total coulomb recovery of 1444.06C ± 42.60C, with the lowest amount of volatile fatty acids accumulation. Consequently, MZ is recommended as a superior catalyst for enhancing MES performance and suggested to utilize 1 mg cm−2 MZ loading on the cathode to maximize methane production.

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“…In contrast to biogas, which is produced by anaerobic digestion or fermentation of biomass, the p‐MFC can produce energy even while the plants are still in the process of growing (Ali et al, 2022). Importantly, the researchers claim that the technique neither stunts the plant's growth nor causes any harm to the environment in which it lives (Greenman et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to biogas, which is produced by anaerobic digestion or fermentation of biomass, the p-MFC can produce energy even while the plants are still in the process of growing (Ali et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Overview of the advances in plant microbial fuel cell technology for sustainable energy recovery from rhizodeposition

Bhattacharya

Parthasarthy

Bose

et al. 2023

Biotech & Bioengineering

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In plant microbial fuel cells (p-MFCs) electrochemically active microbes present around the plant root convert rhizodeposits or the organic matter into electrons, protons, and CO 2 . This work covers the increasing trend in research with p-MFCs with their mechanism of operation. Different plant species and their selection criteria are also covered. Furthermore, the long-term evaluation of such systems with its cost effectiveness and commercial and environmental perspectives are also presented. A critical aspect for bioelectricity production is the photosynthetic pathway of the plant. Additionally, the microbial communities and reactor configurations employed across different capacities are also reviewed. The challenges with bioelectricity production and the opportunity for developing p-MFCs in conjunction with traditional MFCs are also covered. These electrogenic reactor systems harness bioelectricity without harvesting the plant and has the capacity to utilize this energy for remote power applications.

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Enhancing biogas and electricity recovery using an iron-manganese oxide catalyzed bioanode in an integrated submersible microbial fuel cell-anaerobic digester

Cited by 7 publications

References 85 publications

Ammonia Removal by Simultaneous Nitrification and Denitrification in a Single Dual-Chamber Microbial Electrolysis Cell

Ammonia Removal by Simultaneous Nitrification and Denitrification in a Single Dual-Chamber Microbial Electrolysis Cell

Optimum Magnetite–Zeolite Nanoparticles Loading on the Cathode of Microbial Electrochemical–Anaerobic Digestion System for Enhancing Methane Generation

Overview of the advances in plant microbial fuel cell technology for sustainable energy recovery from rhizodeposition

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