Enhancement of hydrogen production in a single chamber microbial electrolysis cell through anode arrangement optimization

Liang, Dawei; Peng, Sikan; Lu, Shanfu; Liu, Yanyan; Lan, Fei; Xiang, Yan

doi:10.1016/j.biortech.2011.09.028

Cited by 73 publications

(19 citation statements)

References 27 publications

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“…Results in Fig. 7b showed the typical curves of bioelectrocatalytic oxidation of sodium acetate [37]. The oxidation of acetate started from À0.35 V onwards and reached a plateau from À0.24 V on for the blank GF bioanode.…”

Section: Performance Of the Modified Electrodes In Besmentioning

confidence: 90%

Fabrication of polyaniline/graphene oxide composite for graphite felt electrode modification and its performance in the bioelectrochemical system

Jiang

Lou

Chen

et al. 2015

Journal of Electroanalytical Chemistry

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Section: Performance Of the Modified Electrodes In Besmentioning

confidence: 90%

Fabrication of polyaniline/graphene oxide composite for graphite felt electrode modification and its performance in the bioelectrochemical system

Jiang

Lou

Chen

et al. 2015

Journal of Electroanalytical Chemistry

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“…15 However, the addition of reagents such as PBS or BBS brings about extra cost for the production of biohydrogen. Notably, SFL contains not only a rich content of organics but also certain ions (such as NH 4 + and PO 4 3À ), 16,17 which could be used as a substitute to enable the maintenance of pH cost-effectively. Hence, SFL can be fed into MECs as a feedstock and buffer solution simultaneously, which is highly meaningful for potential applications, although there has been a lack of studies.…”

Section: -9mentioning

confidence: 99%

Hydrogen production from buffer-free anaerobic fermentation liquid of waste activated sludge using microbial electrolysis system

et al. 2016

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Anaerobic fermentation liquid from waste activated sludge with a rich content of organics and phosphate ions is a promising source of carbon and electrolytes for MECs. The effects of three different electrolytes, including phosphate buffer solution (PBS), bicarbonate buffer solution (BBS), and sodium chloride (NaCl), on the performance of an MEC fed with sludge fermentation liquid (SFL) were compared under conditions of similar conductivity. The production yield of hydrogen was 0.92 mL mg À1 COD in an MEC with NaCl, which performed similarly with yields of 1.03 mL mg À1 with BBS and 1.04 mL mg À1 with PBS. The COD removal efficiencies exceeded 50% in all three groups. Although the energy efficiency of 108% with NaCl was lower than that with PBS (121%), the self-buffering system had advantages regarding cost and environment-friendly application over both PBS and BBS. Comparable performance could be obtained in an MEC with NaCl by adjusting the conductivity using SFL as a carbon source and buffer solution.

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“…The MEC H 2 generation system was constructed in a singlechamber, membraneless MECs with a total volume of 64 mL, equipping with the bioanode separately placed on both sides of cathode as described by Li et al (2014) and Liang et al (2011). Prior to start-up, the bioanode of MECs were domesticated in a single-chamber microbial fuel cell (MFC).…”

Section: Mec H 2 Generation Systemmentioning

confidence: 99%

“…In practice, a low auxiliary voltage (more than 0.14 V) has to be applied to drive this reaction in consideration of electrode overpotential and ohmic resistance. Take for example HAc as organic matter, the main electrode reaction is as follows: anode reaction: CH 3 COOH+2H 2 O→8H + +2CO 2 +8e − , E°= −0.28 V (pH=7); cathode reaction: 8H + +8e − →4H 2 , E°= −0.41 V (pH=7) (Liang et al 2011). The electrode reaction resulted in power generation and additional H 2 production.…”

Section: Additional H 2 Generation From Fermentative Effluent In Mecsmentioning

confidence: 99%

“…Furthermore, it is also found that H 2 fermentation can be linked with microbial electrolysis cells (MECs) to convert acetate from effluent through H 2 fermentation into valuable H 2 until fairly recently (Li et al 2014;Liang et al 2011), which is a one-stone two-bird paradigm, it not only produces an additional clean biologic energy but also cleans up simultaneously the environment in a sustainable fashion.…”

mentioning

confidence: 99%

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Effective conversion of maize straw wastes into bio-hydrogen by two-stage process integrating H2 fermentation and MECs

Bai

Pan

et al. 2015

Environ Sci Pollut Res

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The enhanced H2 production from maize straw had been achieved through the two-stage process of integrating H2 fermentation and microbial electrolysis cells (MECs) in the present work. Several key parameters affecting hydrolysis of maize straw through subcritical H2O were optimized by orthogonal design for saccharification of maize straw followed by H2 production through H2 fermentation. The maximum reducing sugar (RS) content of maize straw reached 469.7 mg/g-TS under the optimal hydrolysis condition with subcritical H2O combining with dilute HCl of 0.3% at 230 °C. The maximum H2 yield, H2 production rate, and H2 content was 115.1 mL/g-TVS, 2.6 mL/g-TVS/h, and 48.9% by H2 fermentation, respectively. In addition, the effluent from H2 fermentation was used as feedstock of MECs for additional H2 production. The maximum H2 yield of 1060 mL/g-COD appeared at an applied voltage of 0.8 V, and total COD removal reached about 35%. The overall H2 yield from maize straw reached 318.5 mL/g-TVS through two-stage processes. The structural characterization of maize straw was also carefully investigated by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) spectra.

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Enhancement of hydrogen production in a single chamber microbial electrolysis cell through anode arrangement optimization

Cited by 73 publications

References 27 publications

Fabrication of polyaniline/graphene oxide composite for graphite felt electrode modification and its performance in the bioelectrochemical system

Fabrication of polyaniline/graphene oxide composite for graphite felt electrode modification and its performance in the bioelectrochemical system

Hydrogen production from buffer-free anaerobic fermentation liquid of waste activated sludge using microbial electrolysis system

Effective conversion of maize straw wastes into bio-hydrogen by two-stage process integrating H2 fermentation and MECs

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