A Solar‐driven Microbial Electrolysis Cell for Hydrogen Production from Acetate with Minimal CO2 and CH4 Emission Using p‐Type Cu2O Nanoparticles

Kim, Jun‐Hyun; Jeon, Yongwon; Kim, Sung-Hyun

doi:10.1002/bkcs.11305

Cited by 6 publications

(2 citation statements)

References 17 publications

(29 reference statements)

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“…The MEC reactor was constructed as described by Cheng et al . with some modification . A single‐chamber reactor was made from Plexiglas with 15 mL internal volume (3 cm diameter and 2 cm length).…”

Section: Methodsmentioning

confidence: 99%

Hydrogen Production from Makgeolli Wastewater Using a Single‐Chamber Microbial Electrolysis Cell

Kim

Jeon

et al. 2019

Bulletin Korean Chem Soc

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Domestic and industrial wastewaters are subject to the biological treatment process before discharged to environment. In that process, organic substances contained in the wastewater are degraded by microorganisms. Microbial electrolysis cells (MECs) are suitable technology for wastewater treatment, simultaneously producing hydrogen. In most case, however, a significant amount of methane instead of hydrogen is produced when the wastewater is used for MECs. Here we show that hydrogen is the main product when Makgeolli wastewater (MW) is used as a substrate in a single‐chamber MEC which was operated using acetate and MW. Although current generation profiles vary according to the substrate type and the applied voltage, hydrogen portions were maintained over 90% at −0.6 V and −0.8 V with production rates of 0.95 and 1.55 m3H2/m3/d, respectively. This result shows a possibility of implementing MECs in the real wastewater treatment and hydrogen production.

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Section: Methodsmentioning

confidence: 99%

Hydrogen Production from Makgeolli Wastewater Using a Single‐Chamber Microbial Electrolysis Cell

Kim

Jeon

et al. 2019

Bulletin Korean Chem Soc

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“…The MEC and the polycrystalline silicon solar cell jointly work in a way similar to the Z-scheme in the natural photosynthesis process, as described in the previous studies. 37,42,43 P-doped and Ndoped silicon semiconductors were joined together to form a P-N junction, where the N-doped silicon material shifted the Fermi level nearer to the conduction band and the P-doped silicon material shifted the Fermi level closer to the valence band. 44,45 In this system, sunlight is absorbed by electron-hole pairs and excites electrons to move toward the conduction band, leaving behind holes that move in similar manners but in opposite directions toward the valance band of the polycrystalline silicon.…”

Section: Polycrystalline Solar Cell -Mec Mechanismmentioning

confidence: 99%

Evaluating the use of unassimilated bio‐anode with different exposed surface areas for bioenergy production using solar‐powered microbial electrolysis cell

et al. 2021

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The microbial electrolysis cell (MEC) is an emerging technology for bioenergy production using organic wastewater. Normally, a preassimilated bio-anode is utilized by the MEC to break down the organic content, but the formation and assimilation of microbial community at the anode surface is a time-consuming process. This study utilized a novel unassimilated Ni-foam anode for the first time in solar-powered MEC for bioenergy production. Synthetic dairy manure wastewater (SDMW) was used both as substrate and an inoculum in the solarpowered tubular MEC. The impacts of the exposed surface area of the bio-anode on bioenergy production were evaluated by utilizing two different separation techniques (rate-limited bio-anode -MEC and fully exposed bio-anode -MEC). The former technique achieves a maximum methane production rate of 30.35 ± 0.03 mL/L, 14.2% more than that achieved by the later mentioned technique (26.4 ± 0.05 mL/L). Hydrogen production was approximately 800 ± 5 mm 3 in both experimentations. The maximum generated current in the rate limited bioanode -MEC was 35.5 mA. Scanning electron microscope images confirmed the formation of rod-shaped along with round-shaped microbial communities on the anode surface, and, interestingly, round-shaped bacteria were also grown on the cathode surface. The bioenergy (H 2 and CH 4 ) produced using SDMW within first 13 days of operation, along with the formation of a microbial community, was a significant success in this area and has opened up many research opportunities for producing instant bioenergy from organic waste.

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Double plasmonic effect and step-like charge transport channel synergistically enhance bulk and surface charge separation efficiency of Au/Cu2O-modified TiO2 photoanode for efficient photoelectrochemical water splitting

Huang,

Liu,

Jiang

et al. 2025

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A Solar‐driven Microbial Electrolysis Cell for Hydrogen Production from Acetate with Minimal CO₂ and CH₄ Emission Using p‐Type Cu₂O Nanoparticles

Cited by 6 publications

References 17 publications

Hydrogen Production from Makgeolli Wastewater Using a Single‐Chamber Microbial Electrolysis Cell

Hydrogen Production from Makgeolli Wastewater Using a Single‐Chamber Microbial Electrolysis Cell

Evaluating the use of unassimilated bio‐anode with different exposed surface areas for bioenergy production using solar‐powered microbial electrolysis cell

Double plasmonic effect and step-like charge transport channel synergistically enhance bulk and surface charge separation efficiency of Au/Cu2O-modified TiO2 photoanode for efficient photoelectrochemical water splitting

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