Immobilization of bacterial cells on carbon-cloth anode using alginate for hydrogen generation in a microbial electrolysis cell

Gandu, Bharath; Rozenfeld, Shmuel; Hirsch, Lea Ouaknin; Schechter, Alex; Cahan, Rivka

doi:10.1016/j.jpowsour.2020.227986

Cited by 37 publications

(22 citation statements)

References 43 publications

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“…The organisms belonging to the phylum Proteobacteria related mainly to Geobacter . These results indicated that immobilization using alginate and chitosan inhibit the invasion and development of other microbial communities on the anode 36 …”

Section: Resultsmentioning

confidence: 86%

“…Previously it was shown that a single‐cell MEC (volume of 80 mL) applying a carbon‐cloth anode encapsulated by the biological polymers alginate and chitosan, with acetate as the carbon source and under an applied voltage of 0.5 V, led to an HER of 0.39 m 3 m −3 d −1. 36 A single‐cell MEC (volume of 30 mL) based on a graphite‐fiber brush anode, with acetate as the carbon source and under applied voltage of 0.8 V, led to an HER of 3.12 m 3 m −3 d −1. 53 A single‐chamber membrane‐free MEC (300 mL medium with acetate as the carbon source), with a pure culture of Shewanella oneidensis MR‐1 at an applied voltage of 0.6 V, produced an HER of 0.53 m 3 m −3 d −1 at pH 7, and 0.69 m 3 m −3 d −1 at pH 5.8 54 .…”

Section: Resultsmentioning

confidence: 99%

“…Within the Proteobacteria , the most abundant classes were the γ‐ (62.4%), ε‐ (19.3%), and β‐ Proteobacteria (17.6%) 68 . Gandu et al 36 compared the bioelectroactivity and bacterial diversity in MECs based on an encapsulated carbon‐cloth anode with G. sulfurreducens mixed into alginate and chitosan (immobilized anode) and a non‐immobilized anode. They identified nine distinct phyla and nearly 30 genera in all bacterial anodes.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, this configuration is complicated to handle, compared to that of a single chamber 26,31–34 . However, a single‐chamber MEC suffers from contamination of the bacterial anode by non‐exoelectrogenic bacteria 35–37 …”

Section: Introductionmentioning

confidence: 99%

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Hydrogen production in a semi‐single‐chamber microbial electrolysis cell based on anode encapsulated in a dialysis bag

et al. 2021

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Summary This study focuses on a semi‐single‐chamber microbial electrolysis cell (MEC) based on an anode made of carbon cloth (CCp) combined with stainless‐steel (SS) and encapsulated in a dialysis bag with different molecular weight cut‐offs of 2, 14, and 50 kDa (D2‐, D14‐, and D50‐COMBp, respectively). The encapsulated anode was inoculated with Geobacter sulfurreducens in a small volume directly into the dialysis bag. While the MEC with the non‐encapsulated anode was inoculated into the main chamber volume. The hydrogen evolution rates obtained in the MECs based on D2‐COMBp, D14‐COMBp, and D50‐COMBp anodes were 0.134 ± 0.005, 0.144 ± 0.014, and 0.160 ± 0.009 m3m−2d−1, respectively; while the COMBp led to only 0.122 ± 0.004 m3m−2d−1. When the MEC utilizing D50‐COMBp was fed with wastewater, the current density was only 12.4 ± 0.21 A m−2, compared to feeding with acetate (15.7 ± 0.63 A m−2). The encapsulated anode in the presence of wastewater included 70% of G. sulfurreducens, while the non‐encapsulated included only 58%.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrogen production in a semi‐single‐chamber microbial electrolysis cell based on anode encapsulated in a dialysis bag

et al. 2021

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“…The carbon-based materials are the most widely used for MECs due to their high conductivity, good chemical stability, and relatively low cost [9]. However, the hydrophobic property of carbon materials prevents microbial attachment to electrode [10] which can be modified applying some treatments [11].…”

Section: Introductionmentioning

confidence: 99%

Improvement of biofilm formation for application in a single chamber microbial electrolysis cell

et al. 2021

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An experimental design was performed to study the combined effects of the parameters used for bacteria selective biofilm formation. The parameters were the potential applied, the time of the biofilm formation with electroactive bacteria or the biofilm formation, and the initial substrate concentration in the medium. The performance of the biofilms formed was compared by their kinetic parameter the apparent electron transfer rate constant (K app ), which was obtained from cyclic voltammetry analysis. The results from the experimental design showed that the highest K app of 0.56 s −1 was with the potential applied of −0.45 V for 5 h and 12 mM of the initial substrate concentration in the medium. New values of these parameters were calculated from the statistical analysis of the experimental design results and successfully higher value of K app of 0.64 s −1 can be calculated and obtained. The electroactivity and capability of the biofilm for hydrogen production was also proved in a single chamber microbial electrolysis cell, and a hydrogen production yield of 0.24 m 3 H 2 /m 3 d was obtained. The biofilm formed with these last parameters was also identified with molecular techniques as Exiguobacterium which has barely been reported as electroactive bacteria and used for hydrogen production.

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Role of Microorganisms in Environmental Remediation and Resource Recovery through Microbe‐Based Technologies Having Major Potentials

Malaviya¹,

Sharma²,

Sharma³

et al. 2022

Good Microbes in Medicine, Food Production, Biotechnology, Bioremediation, and Agriculture

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Immobilization of bacterial cells on carbon-cloth anode using alginate for hydrogen generation in a microbial electrolysis cell

Cited by 37 publications

References 43 publications

Hydrogen production in a semi‐single‐chamber microbial electrolysis cell based on anode encapsulated in a dialysis bag

Hydrogen production in a semi‐single‐chamber microbial electrolysis cell based on anode encapsulated in a dialysis bag

Improvement of biofilm formation for application in a single chamber microbial electrolysis cell

Role of Microorganisms in Environmental Remediation and Resource Recovery through Microbe‐Based Technologies Having Major Potentials

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