Improved bio-hydrogen production from glucose by adding a specific methane inhibitor to microbial electrolysis cells with a double anode arrangement

Zhang, Jingnan; Bai, Yan-Xia; Fan, Yaoting; Hou, Hongwei

doi:10.1016/j.jbiosc.2016.03.016

Cited by 37 publications

(27 citation statements)

References 32 publications

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“…Furthermore, as shown in Fig. 3d, a steady pure hydrogen production rate of 0.0432 mL min −1 based on 1 cm 3 cell volume of PEMEC (about 62.2 m 3 H 2 /m 3 /d based on PEMEC volume) can be obtained in our integrated device, which is almost 26 times higher than that of MEC-based system using glucose reported in literature 22 . The higher hydrogen production rate in our integrated device could be attributed to using POM catalyst to substitute for exoelectrogenic microbes, because POM catalysts have higher reaction activity with glucose than microbe catalysts 24 .…”

Section: Reactormentioning

confidence: 56%

“…Recently, a new biological method, microbial electrolysis cell (MEC), can convert simple acetate and glucose into pure H 2 gas using current generated by exoelectrogenic microbes [17][18][19][20][21] . However, an external voltage of 0.2-0.8 V must be applied to the electrolysis cell to overcome the thermodynamic barrier of electrolysis reaction 17 , and the hydrogen production rate is still low (just 2.39 m 3 H 2 /m 3 / d based on MEC volume), which should be ascribed to the low reaction rate between exoelectrogenic microbes and biomass feedstock 22 .…”

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confidence: 99%

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A self-powered electrolytic process for glucose to hydrogen conversion

Liu

Zhang

et al. 2019

Commun Chem

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Glucose is a promising feedstock for hydrogen production but the existing microbial electrolysis process suffers from low efficiency. Here we show a process for hydrogen production using an integrated device consisting of a liquid-catalyst fuel cell (LCFC) stack and a polymer exchange membrane electrolytic cell (PEMEC). Glucose that cannot be directly used in traditional fuel cell was used as both the fuel to power the LCFC and the hydrogen sources. Different from simple combination of two independent units, the LCFC and PEMEC in our device are dependant one on another by using a SHAREDCELL, and all electrolytes in both fuel cell and electrolyzer are self-regenerated without using external electricity. As a result, feed stock of glucose was converted to pure hydrogen in cathode, and carbon dioxide in anode. The net reaction of the process is that glucose decomposes to hydrogen and carbon dioxide under thermal heating at~85 o C.

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Section: Reactormentioning

confidence: 56%

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confidence: 99%

A self-powered electrolytic process for glucose to hydrogen conversion

Liu

Zhang

et al. 2019

Commun Chem

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“…Recently, improved hydrogen production was demonstrated in single chamber MECs with the addition of 5% chloroform to inhibit methanogens for up to 11 cycles (Zhang et al, 2016). The maximum hydrogen production obtained was 8.4± 0.2 mol H 2 mol-glucose -1 at a rate of 2.39 ± 0.3 m 3 m -3 d -1 with high energy efficiency (165 ±5%) (Zhang et al, 2016). Chloroform (CHCl 3 ) blocks the activity of corrinoid enzymes and inhibits the activity of methyl-coenzyme M reductase in methanogenic archaea (Table 2).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Bioelectrohydrogenesis and inhibition of methanogenic activity in microbial electrolysis cells - A review

Karthikeyan

Cheng

Selvam

et al. 2017

Biotechnology Advances

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Microbial electrolysis cells (MECs) are a promising technology for biological hydrogen production. Compared to abiotic water electrolysis, a much lower electrical voltage (~0.2V) is required for hydrogen production in MECs. It is also an attractive waste treatment technology as a variety of biodegradable substances can be used as the process feedstock. Underpinning this technology is a recently discovered bioelectrochemical pathway known as "bioelectrohydrogenesis". However, little is known about the mechanism of this pathway, and numerous hurdles are yet to be addressed to maximize hydrogen yield and purity. Here, we review various aspects including reactor configurations, microorganisms, substrates, electrode materials, and inhibitors of methanogenesis in order to improve hydrogen generation in MECs.

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“…6,9 To inhibit the methanogenesis process in the singlechamber MEC, different strategies have been developed in recent years. 6,9,10 Chemical agents, such as 2-bromomethane sulfonate (2-BES), 4 chloroform, 11 and acetylene, 5 have been tested for the methanogen inhibitors in the MEC. With addition of 286 mM 2-bromoethanesulfonate in the MEC, methanogenic electron loss decreased from 36% to 2.5% and the overall H 2 recovery increased from 56% to 80%.…”

Section: Introductionmentioning

confidence: 99%

“…4 With the chloroform dosage of 5&, the methane (CH 4 ) production was efficiently inhibited within 11 batch cycles. 11 However, the chemical inhibitors above were toxic and not sustainable during longterm operation in the MEC. 2,6 The negative pressure (40.5 kPa) control in the single-chamber MEC improved H 2 production rate and electrical energy recovery due to the inhibition of methanogen growth.…”

Section: Introductionmentioning

confidence: 99%