Bio-hydrogen production through microbial electrolysis cell: Structural components and influencing factors

Gautam, Rahul; Nayak, Jagdeep Kumar; Ress, Neil V.; Wilckens, Robert Steinberger; Ghosh, Uttam Kumar

doi:10.1016/j.cej.2022.140535

Cited by 80 publications

(15 citation statements)

References 286 publications

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“…22 Methane generation is a significant problem in this type of biohydrogen production. Besides the issues in large-scale continuous operation of the system, 23 control of pH, robustness to all feedstocks, expensive materials of construction are important challenges toward commercialization. 24 2.1.6.…”

Section: Overview Of Biohydrogen Generation Processesmentioning

confidence: 99%

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Sohale,

Janardanan,

Yadav

et al. 2023

Ind. Eng. Chem. Res.

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The growing demand for hydrogen gas as a fuel has led to the development of efficient technologies for production of hydrogen from renewable sources. Biohydrogen generation technologies such as “waste to wealth” systems have enormous potential for commercial applications and scaleup. In the present Review, the dependence of various process conditions and computational fluid dynamics (CFD) simulation studies on the yield, production rate, and hydrodynamics of the reactors has been discussed on various scales of operation. The optimum operating parameters, scaleup aspects, and comparative analysis for various feedstocks have shown sugar cane molasses as a potential substrate along with other cosubstrates like groundnut deoiled cake for dark fermentative biohydrogen production on a commercial scale. In addition, the works of various research groups for pilot scale biohydrogen production and a roadmap toward the future work in this field has been discussed.

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Section: Overview Of Biohydrogen Generation Processesmentioning

confidence: 99%

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Sohale,

Janardanan,

Yadav

et al. 2023

Ind. Eng. Chem. Res.

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“…Environmental pollution and energy shortages are urgent global challenges requiring effective solutions for pollution remediation and sustainable energy production. − Hydrogen (H 2 ), a clean and high-energy-density fuel that produces only water during combustion, has attracted extensive attention and global development. − Microbial electrolysis cells (MECs) demonstrate significant potential for converting biomass and organic waste into H 2 while treating wastewater, providing dual environmental and energy benefits. − Compared to other H 2 production methods, MECs have a notable advantage in their theoretically low energy requirement, with H 2 production possible at voltage as low as 0.6–1.0 V . Currently, MECs have achieved a maximum current density of 43 A/m 2 and an H 2 production rate of 72 L-H 2 /L/d at 0.8 V .…”

Section: Introductionmentioning

confidence: 99%

Microbial Water Electrolysis Cells for Efficient Wastewater Treatment and H₂ Production

Dong,

Pang,

Luo

et al. 2024

ACS Sustainable Chem. Eng.

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The world is facing severe environmental pollution and energy shortages. Microbial electrolysis cells (MECs) provide a promising solution by producing H 2 from wastewater. However, MECs face limitations, such as low current densities, slow H 2 production, and electrogenic bacteria deactivation at high voltages. In this study, we developed microbial water electrolysis cells (MWECs), a new device that couples MECs with water electrolysis (WE). At an applied voltage of 2.2 V, MWECs achieved an industrial-level high current density of 400 mA/ cm 2 , a fast H 2 production rate of 121 L-H 2 /L/d, and a low energy consumption of 5.93 kWh/m 3 . Moreover, the protective effect of the abiotic anode in water electrolysis enabled microorganisms to maintain robust activity at high voltages in MWECs, with Geobacter, Azospirillum, and Paracoccus as the dominant genera. This led to a 2-fold increase in chemical oxygen demand (COD) removal, reaching 1.51 kg/m 3 /d, compared to MECs. This study demonstrated the feasibility and advantages of integrating MECs with water electrolysis to achieve high current densities, fast H 2 production rates, and efficient COD removal rates, making practical applications possible.

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“…The number of pollutant gasses can be eliminated by replacing fossil fuel with alternative fuel (i.e., H 2 ) (Cloete et al, 2022). In addition, the wastewater issue can be solved by performing chemical, physical, and/or biological approaches (Ye and Li, 2023;Gautam et al, 2022). Based on these environmental contexts, the authors suggest choosing the biological method to solve both gasses and wastewater issues.…”

Section: Introductionmentioning

confidence: 99%

Tofu Wastewater (TWW) Treatment and Hydrogen (H2) Production by Using A Microbial Electrolysis Cell (MEC) System

Satar

Sirajuddin

Permadi

et al. 2023

indones. j. env. man. sus.

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High organic pollutant in tofu wastewater (TWW) raises a negative impact on environmental sustainability and health. Therefore, the TWW must be treated before it is discharged into the environment. Microbial electrolysis cell (MEC) is one of the green technologies that can be used to treat wastewater and generate hydrogen as well. This work tries to investigate the performance of MEC based on the decrement of organic pollutants in TWW. Some important parameters of organic pollutants in TWW such as chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solids (TSS), total dissolved solids (TDS), total solid (TS), and pH were evaluated before and after MEC operation. The results showed that the COD and BOD levels decreased around 56% and 35% while pH increased from 7.90 to 7.16. Additionally, the TSS, TDS, and TS decreased by around 35.0%, 45.5%, and 33.2%. In addition, the optimum hydrogen yield (YH2) and hydrogen production rate (QH2) were obtained at 114 ± 0.1 mL H2/g COD 360 ± 20 mL H2/L/d. Overall, the MEC system could be used to reduce the level of organic pollutants in TWW and generated H2 at the same time.

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Bio-hydrogen production through microbial electrolysis cell: Structural components and influencing factors

Cited by 80 publications

References 286 publications

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Microbial Water Electrolysis Cells for Efficient Wastewater Treatment and H₂ Production

Tofu Wastewater (TWW) Treatment and Hydrogen (H2) Production by Using A Microbial Electrolysis Cell (MEC) System

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Bio-hydrogen production through microbial electrolysis cell: Structural components and influencing factors

Cited by 80 publications

References 286 publications

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Microbial Water Electrolysis Cells for Efficient Wastewater Treatment and H2 Production

Tofu Wastewater (TWW) Treatment and Hydrogen (H2) Production by Using A Microbial Electrolysis Cell (MEC) System

Contact Info

Product

Resources

About

Microbial Water Electrolysis Cells for Efficient Wastewater Treatment and H₂ Production