Effects of azide on current generation and microbial community in air-cathode MFCs

Xiangtong Zhou, Youpeng Qu, Byung Hong Kim, Henan Li, Jia Liu, Yue Du, Da Li, Yue Dong, Nanqi Ren, Yujie Feng

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Azide is known to be a respiratory inhibitor, which can disrupt electron transfer in the process of aerobic respiration. It has been proposed for preventing the reduction of oxygen in the anode compartment of MFC-based biosensors, but has also been found to function as an electron acceptor in recent research. However, there are few reports about the effects of azide on the structure and composition of the microbial community in air-cathode MFCs, as well as on their corresponding performance. Therefore, the current generation, electroactivity and community structure of anodic biofilms were investigated using air-cathode MFCs acclimated with (1.5 mM) and without azide. The enrichment process was much slower in the presence of azide compared to the control. Biofilms enriched with and without azide were found to produce similar voltammograms, but the difference lay in the current intensity of the predominant peaks. Pyrosequencing indicated that the distribution of microbes at the genus level was more uniform, with Geobacter and Ignavibacterium being the dominant genera on both biofilms, although the community of the azide-enriched film was less diverse than that of the control. These results demonstrate that the microbial community enriched with azide was not significantly altered compared to the control and the difference in the maximum current or peak current of cyclic voltammograms (CVs) was thought to be related to the amount of biomass.

    Original languageEnglish
    Pages (from-to)14235-14241
    Number of pages7
    JournalRSC Advances
    Volume5
    Issue number19
    DOIs
    Publication statusPublished - 2015

    Fingerprint

    Azides
    Biofilms
    Cathodes
    Air
    Electrons
    Biosensors
    Anodes
    Biomass
    Oxygen
    Chemical analysis

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Zhou, X., Qu, Y., Kim, B. H., Li, H., Liu, J., Du, Y., ... Feng, Y. (2015). Effects of azide on current generation and microbial community in air-cathode MFCs. RSC Advances, 5(19), 14235-14241. https://doi.org/10.1039/c4ra13345e

    Effects of azide on current generation and microbial community in air-cathode MFCs. / Zhou, Xiangtong; Qu, Youpeng; Kim, Byung Hong; Li, Henan; Liu, Jia; Du, Yue; Li, Da; Dong, Yue; Ren, Nanqi; Feng, Yujie.

    In: RSC Advances, Vol. 5, No. 19, 2015, p. 14235-14241.

    Research output: Contribution to journalArticle

    Zhou, X, Qu, Y, Kim, BH, Li, H, Liu, J, Du, Y, Li, D, Dong, Y, Ren, N & Feng, Y 2015, 'Effects of azide on current generation and microbial community in air-cathode MFCs', RSC Advances, vol. 5, no. 19, pp. 14235-14241. https://doi.org/10.1039/c4ra13345e
    Zhou, Xiangtong ; Qu, Youpeng ; Kim, Byung Hong ; Li, Henan ; Liu, Jia ; Du, Yue ; Li, Da ; Dong, Yue ; Ren, Nanqi ; Feng, Yujie. / Effects of azide on current generation and microbial community in air-cathode MFCs. In: RSC Advances. 2015 ; Vol. 5, No. 19. pp. 14235-14241.
    @article{f8e0ab7a3a7745aba307656380c00e9b,
    title = "Effects of azide on current generation and microbial community in air-cathode MFCs",
    abstract = "Azide is known to be a respiratory inhibitor, which can disrupt electron transfer in the process of aerobic respiration. It has been proposed for preventing the reduction of oxygen in the anode compartment of MFC-based biosensors, but has also been found to function as an electron acceptor in recent research. However, there are few reports about the effects of azide on the structure and composition of the microbial community in air-cathode MFCs, as well as on their corresponding performance. Therefore, the current generation, electroactivity and community structure of anodic biofilms were investigated using air-cathode MFCs acclimated with (1.5 mM) and without azide. The enrichment process was much slower in the presence of azide compared to the control. Biofilms enriched with and without azide were found to produce similar voltammograms, but the difference lay in the current intensity of the predominant peaks. Pyrosequencing indicated that the distribution of microbes at the genus level was more uniform, with Geobacter and Ignavibacterium being the dominant genera on both biofilms, although the community of the azide-enriched film was less diverse than that of the control. These results demonstrate that the microbial community enriched with azide was not significantly altered compared to the control and the difference in the maximum current or peak current of cyclic voltammograms (CVs) was thought to be related to the amount of biomass.",
    author = "Xiangtong Zhou and Youpeng Qu and Kim, {Byung Hong} and Henan Li and Jia Liu and Yue Du and Da Li and Yue Dong and Nanqi Ren and Yujie Feng",
    year = "2015",
    doi = "10.1039/c4ra13345e",
    language = "English",
    volume = "5",
    pages = "14235--14241",
    journal = "RSC Advances",
    issn = "2046-2069",
    publisher = "Royal Society of Chemistry",
    number = "19",

    }

    TY - JOUR

    T1 - Effects of azide on current generation and microbial community in air-cathode MFCs

    AU - Zhou, Xiangtong

    AU - Qu, Youpeng

    AU - Kim, Byung Hong

    AU - Li, Henan

    AU - Liu, Jia

    AU - Du, Yue

    AU - Li, Da

    AU - Dong, Yue

    AU - Ren, Nanqi

    AU - Feng, Yujie

    PY - 2015

    Y1 - 2015

    N2 - Azide is known to be a respiratory inhibitor, which can disrupt electron transfer in the process of aerobic respiration. It has been proposed for preventing the reduction of oxygen in the anode compartment of MFC-based biosensors, but has also been found to function as an electron acceptor in recent research. However, there are few reports about the effects of azide on the structure and composition of the microbial community in air-cathode MFCs, as well as on their corresponding performance. Therefore, the current generation, electroactivity and community structure of anodic biofilms were investigated using air-cathode MFCs acclimated with (1.5 mM) and without azide. The enrichment process was much slower in the presence of azide compared to the control. Biofilms enriched with and without azide were found to produce similar voltammograms, but the difference lay in the current intensity of the predominant peaks. Pyrosequencing indicated that the distribution of microbes at the genus level was more uniform, with Geobacter and Ignavibacterium being the dominant genera on both biofilms, although the community of the azide-enriched film was less diverse than that of the control. These results demonstrate that the microbial community enriched with azide was not significantly altered compared to the control and the difference in the maximum current or peak current of cyclic voltammograms (CVs) was thought to be related to the amount of biomass.

    AB - Azide is known to be a respiratory inhibitor, which can disrupt electron transfer in the process of aerobic respiration. It has been proposed for preventing the reduction of oxygen in the anode compartment of MFC-based biosensors, but has also been found to function as an electron acceptor in recent research. However, there are few reports about the effects of azide on the structure and composition of the microbial community in air-cathode MFCs, as well as on their corresponding performance. Therefore, the current generation, electroactivity and community structure of anodic biofilms were investigated using air-cathode MFCs acclimated with (1.5 mM) and without azide. The enrichment process was much slower in the presence of azide compared to the control. Biofilms enriched with and without azide were found to produce similar voltammograms, but the difference lay in the current intensity of the predominant peaks. Pyrosequencing indicated that the distribution of microbes at the genus level was more uniform, with Geobacter and Ignavibacterium being the dominant genera on both biofilms, although the community of the azide-enriched film was less diverse than that of the control. These results demonstrate that the microbial community enriched with azide was not significantly altered compared to the control and the difference in the maximum current or peak current of cyclic voltammograms (CVs) was thought to be related to the amount of biomass.

    UR - http://www.scopus.com/inward/record.url?scp=84922666398&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84922666398&partnerID=8YFLogxK

    U2 - 10.1039/c4ra13345e

    DO - 10.1039/c4ra13345e

    M3 - Article

    AN - SCOPUS:84922666398

    VL - 5

    SP - 14235

    EP - 14241

    JO - RSC Advances

    JF - RSC Advances

    SN - 2046-2069

    IS - 19

    ER -