Feasibility of Ni/Ti and Ni/
            <scp>GF</scp>
            cathodes in microbial electrolysis cells for hydrogen production from fermentation effluent: A step toward real application

Satar, Ibdal; Loh, Kee Shyuan; Daud, Wan Ramli Wan; Yasin, Nazlina Haiza Mohd; Somalu, Mahendra Rao; Kim, Byung Hong

doi:10.1002/er.5466

Cited by 9 publications

(7 citation statements)

References 44 publications

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“…During DF, even under optimum conditions, in which the maximum theoretical hydrogen yield (4 mol/mol sugars ) could be achieved, only a 20% COD reduction occurs [49]. In this respect, further exploitation of the organic content of the DF effluent, in a second process, could increase the COD reduction efficiency, thus leading to an almost zero-carbon effluent [50], a fact that is also reinforced by the toxicity data of the current study.…”

Section: Energy Recovery From Combining Df With Mec Technologysupporting

confidence: 67%

“…Energies 2021, 14, 8375 6 of 22 50 effective concentration endpoints (% v/v) in each experiment that performed in triplicate. EC endpoints were calculated by Probit analysis (p < 0.05), based on log-transformed values in all cases, while differences among DF, DF-MEC1 and DF-MEC2 toxic endpoints were checked non-parametrically (Mann-Whitney U-test, p < 0.05), using the IBM SPSS Inc. 17 software, after checking for homogenicity (Levene's test).…”

Section: Characterization Of Cnts Buckypapermentioning

confidence: 99%

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The Effect of Anode Material on the Performance of a Hydrogen Producing Microbial Electrolysis Cell, Operating with Synthetic and Real Wastewaters

Apostolopoulos

Bampos

Beobide³

et al. 2021

Energies

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The aim of the study was to assess the effect of anode materials, namely a carbon nanotube (CNT)-buckypaper and a commercial carbon paper (CP) on the performance of a two-chamber microbial electrolysis cell (MEC), in terms of hydrogen production and main electrochemical characteristics. The experiments were performed using both acetate-based synthetic wastewater and real wastewater, specifically the effluent of a dark fermentative hydrogenogenic reactor (fermentation effluent), using cheese whey (CW) as substrate. The results showed that CP led to higher hydrogen production efficiency and current density compared to the CNT-buckypaper anode, which was attributed to the better colonization of the CP electrode with electroactive microorganisms, due to the negative effects of CNT-based materials on the bacteria metabolism. By using the fermentation effluent as substrate, a two-stage process is developed, where dark fermentation (DF) of CW for hydrogen production occurs in the first step, while the DF effluent is used as substrate in the MEC, in the second step, to further increase hydrogen production. By coupling DF-MEC, a dual environmental benefit is provided, combining sustainable bioenergy generation together with wastewater treatment, a fact that is also reinforced by the toxicity data of the current study.

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Section: Energy Recovery From Combining Df With Mec Technologysupporting

confidence: 67%

Section: Characterization Of Cnts Buckypapermentioning

confidence: 99%

The Effect of Anode Material on the Performance of a Hydrogen Producing Microbial Electrolysis Cell, Operating with Synthetic and Real Wastewaters

Apostolopoulos

Bampos

Beobide³

et al. 2021

Energies

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“…Other than MoS 2 , molybdenum sulfides (MoS x ) have been shown to support H 2 evolution in industrial wastewater . In addition, titanium (Ti), a first-row transition metal like Ni, has also been considered as a possible alternative. , When tested as the bare cathode electrode, Ti mesh performed similar to Ni mesh and Pt/CC with 1.0 V of external voltage and a HPR of 0.23 ± 0.01 m 3 /m 3 day. When used as a base electrode coated with Ni, Ni/Ti had a slightly higher HPR than that of Ni coated graphene (0.39 ± 0.01 vs 0.33 ± 0.03 m 3 /m 3 day).…”

Section: Emerging Cathode Catalysts In the Past Decadementioning

confidence: 99%

Cathode Material Development in the Past Decade for H₂ Production from Microbial Electrolysis Cells

et al. 2021

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Cathode materials are critical for microbial electrolysis cell (MEC) development and its contribution to achieving a circular hydrogen economy. There are numerous reports on the progress in MEC cathode development during the past decade, but a comprehensive review on the quantitative comparisons and critical assessments of these works is lacking. This Review summarizes and analyzes the published literature on MEC cathode and catalyst development in the past decade, providing an overview of new materials examined during this time period and quantitative analyses on system performance and trends in materials development. Collected data indicate that hybrid materials have become the most popular catalyst candidate while nickel materials also attract increasing interest and exploration. However, the dilemma between higher H 2 production rate and larger MEC volume remains and still requires more investigation of novel MEC cathode catalysts and configurations to offer a solution.

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“…9 Not only wastewaters, but also other organic wastes such as lignocellulosic biomass and fermentation effluents can be used to feed exoelectrogenic microorganisms to produce hydrogen gas in MECs. 10,11 Moreover, decolorization of toxic compounds found in wastewaters can be achieved using MECs. 12 Microbial electrochemical cells including MECs can also be combined with anaerobic digestion systems, and toxic contaminants such as sulfides and quinolones are bioremediated.…”

Section: Introductionmentioning

confidence: 99%

Enhanced hydrogen production by mevastatin in microbial electrolysis cells

et al. 2021

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Mevastatin is one of the common pharmaceuticals found in wastewaters, and its biodegradation is still an environmental problem due to its recalcitrant properties. Although various biological, chemical and physical methods have been investigated for the removal of mevastin, microbial electrolysis cells (MECs) have not been examined, yet. MECs are new generation biotechnological tools used in hydrogen energy production. In this study, the effects of mevastatin on hydrogen production in MECs were investigated for the first time. MECs produced hydrogen gas in the presence of mevastatin, and an increase in hydrogen production was observed. Over 90% of the mevastatin were removed in MECs. These results also showed that the fermentation process associated with carbon dioxide production can favor hydrogen production with mevastatin. In conclusion, the efficiency of hydrogen production in microbial cells can be increased by the use of wastewaters contaminated with mevastatin.

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Feasibility of Ni/Ti and Ni/ GF cathodes in microbial electrolysis cells for hydrogen production from fermentation effluent: A step toward real application

Abstract: The low cost, low over-potential loss, good catalytic properties for hydrogen

Cited by 9 publications

References 44 publications

The Effect of Anode Material on the Performance of a Hydrogen Producing Microbial Electrolysis Cell, Operating with Synthetic and Real Wastewaters

The Effect of Anode Material on the Performance of a Hydrogen Producing Microbial Electrolysis Cell, Operating with Synthetic and Real Wastewaters

Cathode Material Development in the Past Decade for H₂ Production from Microbial Electrolysis Cells

Enhanced hydrogen production by mevastatin in microbial electrolysis cells

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Feasibility of Ni/Ti and Ni/ GF cathodes in microbial electrolysis cells for hydrogen production from fermentation effluent: A step toward real application

Abstract: The low cost, low over-potential loss, good catalytic properties for hydrogen

Cited by 9 publications

References 44 publications

The Effect of Anode Material on the Performance of a Hydrogen Producing Microbial Electrolysis Cell, Operating with Synthetic and Real Wastewaters

The Effect of Anode Material on the Performance of a Hydrogen Producing Microbial Electrolysis Cell, Operating with Synthetic and Real Wastewaters

Cathode Material Development in the Past Decade for H2 Production from Microbial Electrolysis Cells

Enhanced hydrogen production by mevastatin in microbial electrolysis cells

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Product

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Cathode Material Development in the Past Decade for H₂ Production from Microbial Electrolysis Cells